2024-03-29T00:41:30Z
https://jurnal.ugm.ac.id/teknosains/oai
oai:jurnal.ugm.ac.id:article/8162
2018-09-07T18:25:51Z
teknosains:ART
UJI IRITASI MATERIAL COBALT CHROMIUM SEBAGAI MATERIAL DASAR BONE PLATE UNTUK REKONSTRUKSI MANDIBULA
Sari, Dian Permata
Sholihah, Eti Nurwening
Herliansyah, Muhammad Kusumawan
Rekayasa Biomedis
Cobalt Chromium; Intracutaneous; Irritation; Mandibular Reconstruction
The mandibular bone defect can cause speech disorder, mastication malfunction, and aesthetic problems. The application of plate for mandibular reconstruction can improve the function disorder. Plate material must be strong, resilient, able to adapt to the bone surface, and has good biocompatibility. Cobalt chromium is a cobalt base alloys are often used for implant materials. It has good mechanical properties, biocompatibility, and corrosion resistance. The aim of this study was to investigate the effect of local irritation and tissue response on material cobalt chromium. This study used three albino rabbits were injected by the material powder in polar and nonpolar solvents with intracutaneous injection method, then the treatments were observed on the first, second, and third days. Erythema and edema that occurs were scored based on grading system for intracutaneous (intradermal) reactions. Friedmann test showed no significant difference between treatment groups (p> 0.05). The results showed that erythema and edema arising from irritant reactions are still within normal limits. Irritation occurs due to the release of cobalt chromium ions which trigger hypersensitivity reactions and result in systemic immunity.
Universitas Gadjah Mada
2018-09-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/8162
10.22146/teknosains.8162
Jurnal Teknosains; Vol 7, No 2 (2018): June; 128-136
Jurnal Teknosains; Vol 7, No 2 (2018): June; 128-136
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/8162/22051
Copyright (c) 2018 Dian Permata Sari
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/27101
2018-09-07T18:03:48Z
teknosains:ART
PENENTUAN LOKASI TEMPAT EVAKUASI AKHIR PENGUNGSI PADA ANCAMAN BENCANA TSUNAMI KOTA PADANG
Fijra, Rafiqa
Industrial Engineering;operation research
Linear programming; Megathrust, TEA; Tsunami disaster
Padang is capital city of West Sumatera whose coastal layout and approximately 50% of population live in low area. It opposites to the Indian Ocean which near the Megathrust subduction which can trigger a powerful earthquake and generate tsunami. Because of the potential risk, important to finding the final evacuated region (TEA) location addressed by evacuee of each affected village, and defining the evacuee population and its susceptive population on each TEA. Defining the location TEA is provided by formulating the linear programming model which minimizing the total traveled distance. Then, defining of population and susceptive of evacuee in each TEA also analyzed to support the response disaster occurred. The optimization model is conducted in three level scenarios of tsunami scale, that are big, medium, and small .
Universitas Gadjah Mada
BPBD Kota Padang
2018-09-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Integer Linear programming
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/27101
10.22146/teknosains.27101
Jurnal Teknosains; Vol 7, No 2 (2018): June; 111-118
Jurnal Teknosains; Vol 7, No 2 (2018): June; 111-118
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/27101/22049
Copyright (c) 2018 Rafiqa Fijra
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/28222
2018-09-07T18:03:47Z
teknosains:ART
PENGEMBANGAN ALAT UKUR EVALUASI DAN PERANCANGAN PRODUK KURSI RODA
Jatmiko, Hapsoro Agung
Dharmastiti, Rini
Industrial Engineering; Ergonomics
Factor Analysis; House of Quality; PEQ; Product Design; Wheelchair Evaluation
A wheelchair is one of the mobility aids for people with disabilities. Availability of wheelchair type is very decisive for users based on the limitations they have. The problem felt by users in Indonesia today, especially in Yogyakarta, is that users have not got the right kind of wheelchairs with the needs, with certain limitations. This study aims to develop a wheelchair evaluation and to know the user's expectation of the wheelchair design. This study shows that there are problems due to the users not getting a wheelchair that suits their needs. The wheelchair design that the users want are the wheelchair with 3 wheels and have new feature.
Universitas Gadjah Mada
Risnawati Utami
O-Hana Indonesia
2018-09-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/28222
10.22146/teknosains.28222
Jurnal Teknosains; Vol 7, No 2 (2018): June; 104-110
Jurnal Teknosains; Vol 7, No 2 (2018): June; 104-110
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/28222/22052
Copyright (c) 2018 Hapsoro Agung Jatmiko dan Rini Dharmastiti
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/30139
2018-07-13T15:26:02Z
teknosains:ART
PENDEKATAN ANN (ARTIFICIAL NEURAL NETWORK) UNTUK PENENTUAN PROSENTASE BOBOT PEKERJAAN DAN ESTIMASI NILAI PEKERJAAN STRUKTUR PADA RUMAH SAKIT PRATAMA
Prathama, Aulia Yudha
civil engineering; project management
Artificial Neural Network; desain bangunan; nilai pekerjaan struktural; prakiraan biaya; rumah sakit
Pengambilan keputusan dalam estimasi biaya dalam proses perancangan bangunan memiliki peranan penting. Oleh sebab itu kebutuhan akan alat estimasi baik dari sisi desain perencanaan maupun manajemen proyek perlu dikembangkan. Makalah ini membahas manfaat metodologi jaringan syaraf tiruan (Artificial Neural Network) untuk mengatasi masalah estimasi biaya nilai pekerjaan struktural pada tahap proses perancangan bangunan. Nilai pekerjaan struktural sendiri memiliki alokasi yang cukup besar dari total kontrak dan merupakan item pekerjaan yang cukup penting dalam suatu pekerjaan konstruksi bangunan. Data terkait nilai pekerjaan struktural dan desain item pekerjaan dari 8 proyek digunakan untuk pelatihan dan pengujian Metode Artificial Neural Network (ANN) dengan tujuh variabel desain digunakan dalam memprakirakan nilai biaya pekerjaan struktural dari bangunan Rumah Sakit Pratama pada daerah terpencil di Indonesia. Dari simulasi ANN diperoleh persamaan empiris terbaik untuk prakiraan harga kontrak gedung rumah sakit pada tahap perencanaan dengan struktur ANN terbaik 7-9-1 (7 variabel input, 1 hidden layer dengan 9 neuron dan 1 output) dengan hasil akurasi estimasi biaya rata – rata 96.51% tercapai.
Universitas Gadjah Mada
Direktorat Pelayanan Kesehatan Rujukan
Kementerian Kesehatan Republik Indonesia
2018-07-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Artificial Neural Network; backpropagation
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/30139
10.22146/teknosains.30139
Jurnal Teknosains; Vol 7, No 1 (2017): December; 14-25
Jurnal Teknosains; Vol 7, No 1 (2017): December; 14-25
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/30139/21448
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/30139/3121
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/30139/3123
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/30139/3124
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/30139/3125
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/30139/3126
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/30139/3127
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/30139/3128
Copyright (c) 2018 Aulia Yudha Prathama
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/30958
2019-07-24T15:34:10Z
teknosains:ART
STUDI PENGARUH JARI-JARI DALAM MAGNET TERHADAP TEGANGAN GENERATOR AKSIAL PADA BAHAN CAKRAM AKRILIK
Prihatmoko, Pebri
Wijaya, F. Danang
Suharyanto, Suharyanto
TEKNIK ELEKTRO; SISTEM ISYARAT ELEKTRONIK
Acrylic Discs; Magnetic Flux; Magnet Permeability; Neodymium Magnet; Wood Discs.
The high cost of making rotor discs is one aspect that becomes an obstacle in the implementation of axial generator research. This study aims to compare acrylic discs with wooden discs in terms of axial generator output voltage and production costs, so that further research can use alternative discs with lower cost. This study uses an experimental method, where this method is used to find existing variables. On a generator with an acrylic disc, the average voltage is 16.6 volts with a manufacturing cost of 151,500 rupiah. Whereas on generator with wood disc, the average voltage is 17.2 volts with a manufacturing cost of 48,750 rupiah. Thus wood disc can be an alternative material in making cheap axial generator rotor discs.
Universitas Gadjah Mada
2019-01-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
EXPERIMENTAL
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/30958
10.22146/teknosains.30958
Jurnal Teknosains; Vol 8, No 2 (2019): June; 105-113
Jurnal Teknosains; Vol 8, No 2 (2019): June; 105-113
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/30958/25001
Copyright (c) 2019 Pebri Prihatmoko, dkk
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/31134
2018-07-13T15:13:57Z
teknosains:ART
MORPHOLOGICAL VARIATION OF EARLY DAYS TO FLOWERING ON LOCAL RICE ACCESSIONS COLLECTED FROM PONOROGO
Trisnaningrum, Niken
Laila, Alfu
Local rice germplasm may play an important role in improving rice quality. One of the important to improve rice cultivar trait is days to flowering. Ponorogo is one of district of center rice production area where the farmers cultivate local rice varieties which is early days to flowering or short vegetative phase. Exploration of local early days to flowering rice accessions in Ponorogo resulted in 9 accessions. Flowering times ranged 51 to 91 days after sowing. Based on morphological variation, there were variation of plant height, number of leaves, number of tiller, number of panicle, number of grains per panicle, flowering time, grain size and weight of 100 grains. Morphological dendrogram made possible to identify three groups at similarity 0.88.
Universitas Gadjah Mada
2018-07-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/31134
10.22146/teknosains.31134
Jurnal Teknosains; Vol 7, No 1 (2017): December; 59-66
Jurnal Teknosains; Vol 7, No 1 (2017): December; 59-66
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/31134/21442
Copyright (c) 2018 Niken Trisnaningrum, Alfu Laila
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/31917
2019-07-24T15:34:10Z
teknosains:ART
EFEKTIFITAS PENAMBAHAN MEDIA GEOTEKSTIL PADA SARINGAN PASIR LAMBAT TERHADAP PENYISIHAN PARAMETER KEKERUHAN, JUMLAH COLI DAN COD
Kusumawardani, Yustika
Astuti, Widi
Teknik Lingkungan, Fakultas Teknik
Slow Sand Filter; Geotexile; Turbidity; Amount Coli; COD
Slow sand filter processing is done by separating raw contaminant water which is passed slowly on sand. Fluctuating raw water quality resulted in the schmutzdecke layer not growing optimally. Therefore, it is needed media that help the performance of the sand filter. One of the media used is geotextile. The geotextile is useful as a medium to optimize the growth of microorganisms in the schmutzdecke layer. Geotextiles have similar surface structures such as sand filters as well as their pores. The purpose of this study was to determine the effectiveness of adding geotextiles in reducing turbidity parameters, number of coli and COD. This study used slow sand filter reactor with a continuous flow system of 0.3 m3 / m2.jam for 7 days. Based on the research, the addition of geotextile media is quite effective and can improve the performance of slow sand filter. Percentage of turbidity removal reached 94.27%, coli 99.40% and COD 92.85%. COD values tend to be dynamic as raw water conditions. Geotextiles is quite helpful in growing a layer of schmutzdecke because the structure resembles sand so as to increase the number of bacteria bed filters.
Universitas Gadjah Mada
2019-01-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Penelitian
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/31917
10.22146/teknosains.31917
Jurnal Teknosains; Vol 8, No 2 (2019): June; 114-121
Jurnal Teknosains; Vol 8, No 2 (2019): June; 114-121
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/31917/25000
Copyright (c) 2019 Yustika Kusumawardani dan Widi Astuti
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/32343
2018-07-13T15:33:47Z
teknosains:ART
PERAN ORANG TUA TERHADAP KETERAMPILAN MENYIKAT GIGI DAN MULUT PADA ANAK DISABILITAS INTELEKTUAL
Sandy, Leny Pratiwi Arie
The Role of Parent; Tooth Brushing Skill; Intellectual Disability
Intellectual disability is a group of children with impaired intellectual function below an average of 70 or lower. This group experienced problems in terms of self-development skills such as tooth brushing. Tooth brushing is an activity the mechanical removal of from food scraps, germs and plaque. Growing and developing independence of children with intellectual disability was influenced by the role of parents. Parents who have a role as basic of children behavior was contributed to process child growth. This study aims to determine the relationship of parental role to the tooth brushing skill in intellectual disability children.This research method is analytic survey and used cross sectional design. Sampling technique using total sampling. The population in this research is intellectual disability children in SLB Pamardi Putra Banguntapan Bantul Yogyakarta as many as 30 people. The role of parent was measured using questionnaire and tooth brushing skills measured using check list (from Special Care Advocates in Dentistry (SAID) guidelines, 1995). Data analysis using Spearman correlation with significance level (0,05). The result of this research is p = 0.185 (> 0.05), it shows that there is no significant correlation between parent role to oral and brushing skills in intellectual disability children in SLB Pamardi Putra Banguntapan Yogyakarta.
Universitas Gadjah Mada
2018-07-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/32343
10.22146/teknosains.32343
Jurnal Teknosains; Vol 7, No 1 (2017): December; 53-58
Jurnal Teknosains; Vol 7, No 1 (2017): December; 53-58
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/32343/21444
Copyright (c) 2018 Leny Pratiwi Arie Sandy
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/32395
2018-07-13T15:13:56Z
teknosains:ART
ANALISIS KURVA RESESI ALIRAN DASAR MENGGUNAKAN MODEL RESERVOIR LINIER RECESSION CURVE HYDROOFFICE PADA DAS WURYANTORO KABUPATEN WONOGIRI PROPINSI JAWA TENGAH
Latuamury, Bokiraiya Okky
Environmental hydrology
Keywords: the parameters of recession, the individual's recession curve shape, the master recession curve, baseflow recession characteristic
The hydrograph recession curve expresses the theoretical relationship between the aquifer structure and the flow of groundwater flowing into the river basin channel. These theoretical relationships are often empirically depicted using the base flow recession curve. The hydrograph recession curve is commonly used to estimate the recessionary parameters, aquifer properties and to evaluate alternative hydrological hypotheses. The river basin hydrograph recession curve records the behavior of the relationship between the aquifer structure and its association with groundwater outflow to the river channel. This research was conducted with the aim: to analyze the characteristics of the baseflow recession based on the parameters and coefficients of the recession, and the shape of the individual recession curve and the master recession curve. The characteristics of the baseflow recession to research sub-watershed have the recession curves tend to sloped, describing the water storage well enough. The parameter Q0 (recession early), α and the recession constant Krb ranging from 0,80 – 0,90 for the individual and master recession curve in all three research sub-watershed. This calculation result indicates that the recession characteristics in three research sub-watershed have the condition of water storage is excellent, because they are supported by the aquifer characteristics dominated by the geological structures are more permeable (porous).
Universitas Gadjah Mada
Bokiraiya Latuamury,Universitas Pattimura, Departemen of environmental andforestry
2018-07-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
the method of linear reservoir
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/32395
10.22146/teknosains.32395
Jurnal Teknosains; Vol 7, No 1 (2017): December; 26-39
Jurnal Teknosains; Vol 7, No 1 (2017): December; 26-39
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/32395/21445
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/32395/3692
Copyright (c) 2018 Bokiraiya Okky Latuamury
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/33152
2018-07-13T15:16:11Z
teknosains:ART
ENHANCING CAPACITY OF LOCAL COMMUNITY TOWARDS AGRICULTURAL DROUGHT (CASE IN PLOSO VILLAGE, YOGYAKARTA)
Ruslanjari, Dina
Disaster Management; Agricultural Drought
Capacity, drought, farmers, housewives
This paper reveals the capacity enhancement efforts for local community and assessing their vulnerability level regarding the drought event in Ploso Village of Gunungkidul Regency – Yogyakarta Special Province. The vulnerability assessment was conducted to measure the impact of agricultural drought and also focusing on enhancing the community’s absorbing capacity, buffering capacity and local response capacity. The village drought vulnerability assessment was conducted by using indicator-based calculation towards 50 family-heads of Ploso Village as the assessment samples. Absorbing capacity enhancement was conducted by facilitating and educating local farmers to conduct organic farming as well as increasing their local response capacity by focusing on rainwater harvesting, while buffering capacity enhancement is conducted by empowering the housewives for creating alternate household income The disaster preparedness community is created as the centre of intervention to educate local people about drought disaster and preparing the local teenagers to become future focal points in their area.
Universitas Gadjah Mada
2018-07-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
identification and actions
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/33152
10.22146/teknosains.33152
Jurnal Teknosains; Vol 7, No 1 (2017): December; 40-52
Jurnal Teknosains; Vol 7, No 1 (2017): December; 40-52
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/33152/21446
Copyright (c) 2018 Dina Ruslanjari
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/33708
2018-09-07T18:25:51Z
teknosains:ART
SUBTITUSI SAMPAH ORGANIK DAN TANAH MEDITERAN MENJADI SEMEN ALTERNATIF SELAIN SEMEN PORTLAND
Syarif, Muhammad
Sampebulu, Victor
Tjaronge, Muh. Wihardi
Junus, Nasruddin
Arsitektur (material, struktur dan konstruksi)
bottom ash; fly ash; mediteran soil; organic cement, organic waste; portland cement
The results of this study aims to save the environment, through the discovery of new alternative materials by recycling organic waste, household waste, coal waste (fly ash and bottom ash), and substitution of mediteran land and clay into organic cement that is alternative cement in addition portland cement. Test results of organic cement chemical compound using laboratory testing method refers to ASTM C-114 and SNI 15-2049-2004. An indication of resembling a portland cement chemical compound is CaO of 65.36%, SiO₂ 18.84%, AlOO₃ 6.33%, Fe₂O₃ 2.29%, SO₃ 3.64%, MgO 1.35%, C₃S 66 , 72%, C₂S 3.98%, C₃A 12.9%, and C4Af 6.97%. Test methods of physical properties include testing of baseline time and end time and normal consistency value to organic cement, this test refers to ASTM C 191-04 and C 191-08 and ASTM C 187-04. Fineness of organic cement grains that passed in the mesh 200 mesh as much as 56%, more subtle than portland cement is 52%. The solid weight of organic cement is 1200 kg/m3, lighter than portland cement which reaches 1250 kg/m3. The initial setting time for organic cement was 105 minutes, longer than portland cement at 90 minutes. For the organic cement final time at 225 minutes, it was above the end time of portland cement at 180 minutes.
Universitas Gadjah Mada
2018-09-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
eksperimental laboratorium material struktur dan konstruksi
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/33708
10.22146/teknosains.33708
Jurnal Teknosains; Vol 7, No 2 (2018): June; 119-127
Jurnal Teknosains; Vol 7, No 2 (2018): June; 119-127
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/33708/22053
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/33708/4009
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/33708/4010
Copyright (c) 2018 Muhammad Syarif, Victor Sampebulu’, Muh.Wihardi Tjaronge, dan Nasruddin Junus
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/34368
2020-02-24T10:17:44Z
teknosains:ART
Aplikasi Metode Resistivitas 2D untuk Menentukan Intrusi Air Laut di Lambada Lhok Aceh Besar Aceh
Nugraha, Gartika Setiya
Marwan, Marwan
Muhni, Akmal
Geological engineering
Resistivity methods; Res2Dinv; Seawater intrusion; Wenner-Schlumberger.
Lambada Lhok is one of the coastal areas with the most severe water crisis in Aceh Besar, Aceh. Clean water crisis happening in the area because of their breach of saltwater into freshwater aquifers and also due to the large decrease in ground water level that resulted in seawater intrusion. This research was conducted on four lines at two locations, namely: 3 (three) lines in the village of Lambada Lhok and 1 (one) line in the village of Kajhu. Kajhu village was used as comparative data for areas that are free from the intrusion of sea water. The research method using 2D resistivity Wenner-Schlumberger configuration, while the data acquisition using the ARES equipment. Data analysis using Res2Dinv software to make 2-dimension (2-D) cross section model. Lambada Lhok village is an alluvial deposition with an average height of 0-5 meters above sea level (dpl). The subsurface lithology of the village lambada lhok consists of clay sand, sandy clay and clay. Based on the results of the analysis of resistivity values indicate that the suspected sea water intrusion in the village of Lambada Lhok reaches a depth of 29 meters. It can be concluded that the spread of sea water intrusion in Lambada Lhok beginning of the line LL 1, LL 2 to LL 3. Distribution of seawater intrusion are most severe in the trajectory LL 2 and began to decrease at LL 3 trajectory.
Universitas Gadjah Mada
2019-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
metode resistivitas 2D konfigurasi Wenner-Schlumberger dan akuisisi data menggunakan instrumen ARES.
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/34368
10.22146/teknosains.34368
Jurnal Teknosains; Vol 9, No 1 (2019): December; 1-11
Jurnal Teknosains; Vol 9, No 1 (2019): December; 1-11
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/34368/27041
Copyright (c) 2019 Gartika Setiya Nugraha, dkk.
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/34658
2018-07-13T15:13:56Z
teknosains:ART
PENGUKURAN PARAMETER KUALITAS UDARA (CO, NO2, SO2, O3 DAN PM10) DI BUKIT KOTOTABANG BERBASIS ISPU
Kurniawan, Agusta
Chemistry, Climatology, Science Atmospheric, Environmetal Chemistry
GAW; Indonesian Air Pollution Standard Index; Bukit Kototabang; WMO; Air Quality
Bukit Kototabang, West Sumatera is one of the 34 global global (Global scale) monitoring stations in the world. Bukit Kototabang GAW Station is an implementation of the Global Atmosphere Watch (GAW) program initiated by the World Meteorological Organization (WMO) as an effort to monitor global atmospheric conditions. The Global Atmospheric Watch (GAW) Stations have duty to obtain atmospheric data and air quality data in remote area or relatively clean areas and far away from anthropogenic activity. Measurements of air quality parameters (CO, NO2, SO2, O3 and PM10) are continuously conducted at Bukit Kototabang. The monitoring data at Bukit Kototabang GAW Station in 2012 which is converted to Indonesian Air Pollution Standard Index shows the air quality is still good, shown by 353 days classified as clean (index = 0-50), 10 days is moderate (index = 51-100), and 1 day is very unhealthy (index = 200-299). That means 3% of daily air quality in Bukit Kototabang in 2012 is not good.
Universitas Gadjah Mada
Bukit Kototabang GAW Station, BMKG, WMO
2018-07-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Non-Dispersive Infra Red (NDIR) Spectroscopy, UV Fluoresense, Chemiluminescent
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/34658
10.22146/teknosains.34658
Jurnal Teknosains; Vol 7, No 1 (2017): December; 1-13
Jurnal Teknosains; Vol 7, No 1 (2017): December; 1-13
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/34658/21443
Copyright (c) 2018 Agusta Kurniawan
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/34699
2019-01-03T09:51:31Z
teknosains:ART
YOGYAKARTA CITY TRANSPORT SERVICE PLANNING FOR INTEGRATION WITH EXISTING TRANSPORT
Malkhamah, Siti
Eska, Almira Pavita
Mustafa, Alvian
Integration; Tourism Bus; Trans Jogja Wisata
The presence of tourist buses is considered to be a factor in Yogyakarta’s traffic congestion in long holiday season. Research was conducted to plan a tourism transportation, called Trans Jogja Wisata that is integrated with other public transport services to accommodate tourist movement from park and ride locations to tourist attractions. Data collection was done by carrying out surveys and interviews at a parking location in Yogyakarta. The data collected included tourist destinations, bus gateways to Yogyakarta, and environmental conditions. Based on the analysis results for planning Trans Jogja Wisata’s integration with existing public transport, there are four designated routes that can be used to accommodate tourists in getting to their destinations: Route 1, Route 2, Route 3, and Route 4. These routes are fully integrated with the Trans Jogja bus system, becak or pedicabs, andong or horse drawn carriages and Si Thole mini buses.
Universitas Gadjah Mada
2019-01-03
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/34699
10.22146/teknosains.34699
Jurnal Teknosains; Vol 8, No 1 (2018): December; 1-12
Jurnal Teknosains; Vol 8, No 1 (2018): December; 1-12
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/34699/23444
Copyright (c) 2018 Almira Pavita Eska, Siti Malkhamah, Alvian Mustafa
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/34921
2019-07-24T15:34:10Z
teknosains:ART
PEMODELAN SEBARAN BOD DI SUNGAI KAPUAS KECIL BAGIAN HILIR MENGGUNAKAN WASP
Purnaini, Rizki
Sudarmadji, Sudarmadji
Purwono, Suryo
environmental science
BOD; Kapuas Kecil River; Water Quality; WASP Model
The Kapuas Kecil River must be maintained for its water quality so that it can still be utilized in accordance with its designation. The purpose of this study is to predict water quality changes due to incoming waste from various sources of pollutants to the concentration of BOD in Kapuas Kecil River using WASP model as an effort to water quality monitoring and water pollution control.The study area to be simulated is Kapuas Kecil River passing through Pontianak City over ± 22 km from upstream to downstream (estuary) that divided into 42 segments. Water quality data were collected from several monitoring station locations in Kapuas Kecil River downstream, Landak River, effluent trenches located within the administrative area of Pontianak City, as well as secondary data on industrial effluents located along the study area. Water sampling method refers to the SNI 03-7026-2004, sampling was done once at each sample point with variations of the rainy and dry season, and at high and low tide conditions. Hydrometry data and river discharge can be obtained from primary and secondary data.The results showed that domestic and non-domestic of urban discharges that entering the river is very dominant influence on the water quality of the river. BOD concentration in rivers during the dry season is higher than rainy season both in high and low tide conditions. The simulation results of spatial distribution with all scenarios show that the accumulation of BOD pollution load begins after a distance of 5 km from the upstream boundary and then a significant increase in concentration occur at segment 27 with loads originating from the Landak River and Pekong Trench. The BOD concentration then tends to fluctuate to a distance of 5 km before heading downstream, and after that it continues to decline towards the downstream.
Universitas Gadjah Mada
2019-01-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
modeling
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/34921
10.22146/teknosains.34921
Jurnal Teknosains; Vol 8, No 2 (2019): June; 148-157
Jurnal Teknosains; Vol 8, No 2 (2019): June; 148-157
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/34921/25005
Copyright (c) 2019 Rizki Purnaini, dkk.
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/35011
2019-01-03T09:51:31Z
teknosains:ART
SIMULASI ANTRIAN PASIEN RAWAT INAP UNTUK MENGURANGI WAITING LIST VIP DI RUMAH SAKIT
Falen, Frylie Frescia
Subagyo, Subagyo
simulasi dan operation research
Bed; hospital; Investment; Modeling; VIP room; Waiting List
Inefficiency of service and the waiting time can occur in inpatient services, especially in VIP rooms. Reduction in waiting lists for patients entering the VIP room is carried out by increasing the bed capacity and the allocation of health workers. The study was conducted by modeling the service system in hospitalization, which began from the patient service at the Emergency Room (IGD) until service in the VIP room of a hospital in Sukabumi. The model was built with 2 scenarios, scenario 1 was designed to improve the performance of the IGD by adding beds and health workers so that patients had an alternative choice in class 1 before getting service in the VIP room, and scenario 2 was designed by not changing the system in the emergency room, but adding 10 VIP rooms. Scenario 2 is a solution and can visually improve the VIP service system by reducing the waiting time by 50.55 hours, with the investment value of net present value (NPV) > 0 and internal rate of return (IRR) 32.2%, against the Minimum Attractive Rate of Return (MARR) 12% per year profitable. Scenario 2 by adding 10 VIP rooms, initially 25 units to 35 units, effectively being able to produce improvements in significantly reducing the waiting list originally from 50.94 hours to 39 minutes there was a decrease (99.23%), and could reduce the utility level or busyness of service in VIP was originally 93.49% to 87.19%. From the results of NPV analysis > 0, and IRR 32.2% assuming MARR 12% per year, constructing 10 VIP rooms in 5 years can give a profit of 20.2% per year. Scenario 2 can be used as the basis for hospitals in making inpatient service system policies, especially in VIP rooms.
Universitas Gadjah Mada
2019-01-03
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
simulasi
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/35011
10.22146/teknosains.35011
Jurnal Teknosains; Vol 8, No 1 (2018): December; 13-25
Jurnal Teknosains; Vol 8, No 1 (2018): December; 13-25
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/35011/23445
Copyright (c) 2018 Frylie Frescia Falen
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/35130
2018-07-13T15:13:57Z
teknosains:ART
AN ADAPTIVE POWER SYSTEM STABILIZER BASED ON FOCUSED TIME DELAY NEURAL NETWORK
Aribowo, Widi
Power System
SMIB, PSS, FTDNN, DTDNN, Single machine
In this paper, Power System Stabilizer is designed in Single Machine Infinite Bus (SMIB) and speed control is implemented with a dynamic topology based on Focused Time Delay Neural Network (FTDNN). In case of prediction and control, two individual strategies are concerned for the current projects. The first is identification the dynamics of system. The other is an optimization unit expected for minimization disturbances. The performance of the system with FTDNN-PSS controller is compared with a Conventional PSS (C-PSS), RNN-PSS and DTDNN PSS. The results show the effectiveness of FTDNN-PSS design, and superior robust performance for enhancement power system stability compared to Conventional PSS with different cases.
Universitas Gadjah Mada
2018-07-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Neural Network, FOCUSED TIME DELAY NEURAL NETWORK
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/35130
10.22146/teknosains.35130
Jurnal Teknosains; Vol 7, No 1 (2017): December; 67-73
Jurnal Teknosains; Vol 7, No 1 (2017): December; 67-73
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/35130/21447
Copyright (c) 2018 Widi Aribowo
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/35327
2018-09-07T18:03:47Z
teknosains:ART
KINERJA KOLEKTOR TIPE PLAT DATAR PADA MESIN PENDINGIN ADSORPSI TENAGA SURYA DI KOTA MEDAN
Sitorus, Tulus Burhanuddin
Teknik Mesin; Mesin Pendingin
Adsorption Refrigeration; Flat Plate Collector; Medan City; Performance; Solar Energy
The performance of a flat plate collector on adsorption refrigerator driven by the solar collector was investigated in the present work. Based on a study conducted no researcher studies the performance of solar collectors used in adsorption cooling system. The adsorbent used in the collector was 20 kg ordinary powder activated carbon of coconut shell produced in the Sumatera Utara province of Indonesia, 5 liters of methanol as adsorbate and 6 liters of water as the medium that was cooled. The experiments were carried out under varying weather conditions with total solar radiation about 12619-17807 kJ/m2/cycle in Medan city. The experimental results show that the values of collector efficiency obtained were about 52.11-53.92%. The values of coefficient of performance (COP) obtained were in the range of 0.0318-0.0449. The results of the statistical study suggest that the effect of the weather conditions on collector efficiency thereabout 96%.
Universitas Gadjah Mada
Mechanical engineering, Universitas Sumatera Utara
2018-09-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/35327
10.22146/teknosains.35327
Jurnal Teknosains; Vol 7, No 2 (2018): June; 94-103
Jurnal Teknosains; Vol 7, No 2 (2018): June; 94-103
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/35327/22054
Copyright (c) 2018 Tulus Burhanuddin Sitorus
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/35387
2019-01-03T09:51:32Z
teknosains:ART
OPTIMASI DESAIN STENT PLA MENGGUNAKAN METODE RESPONSE SURFACE (RSM) UNTUK MEMPEROLAH FLEKSIBILITAS TERBAIK
B, Sukiman
stent with different types of links; stent L1 to L5 design; bending moment; curvature index; flexibility, response surface methods; von mises
The stent installation is one of cardiovascular disease treatments which is selected the most to handle patients with blood vessel disease. As the demand for stents increases, more researches are aimed at developing them. This study aims to obtain the optimal link design to produce the best flexibility to the change of stent angle with minimum stress so as not to injure blood vessel plaque. In this study, the stents are polymer stent with different types of links made with PLA materials with strut mirror (S><) design. The study was conducted on two stent configurations, namely crimped and expanded to determine the ability of angular change and maximum stress experienced by both when bending moment applied. The bending moment test was done through simulation based on finite element method in software Abaqus 6.14. The simulation results were then used as a model-making reference to determine the desired optimization design using the help of Minitab 18 software based on the response surface method. The results of this study indicate that the best optimal flexibility on crimped stent L1 to L5, which is the highest flexibility with von mises stress in the safety limit can be obtained based on a combination of link design parameters in the form of bending moment of 0.0074 N.mm with a thickness of 100 μm L3, and 0,0087 N.mm with a thickness of 106 μm L5. While at the expanded stent L1 to L5, the optimal link design parameter value for obtaining the best flexibility with von mises stress within the safety limit is a bending moment of 0.0075 N.mm with a thickness of 63.78 μm L3, 0.0067 N.mm with a thickness of 70 μm L5.
Universitas Gadjah Mada
2019-01-03
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/35387
10.22146/teknosains.35387
Jurnal Teknosains; Vol 8, No 1 (2018): December; 48-65
Jurnal Teknosains; Vol 8, No 1 (2018): December; 48-65
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/35387/23448
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/35387/4497
Copyright (c) 2018 Sukiman B
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/35574
2019-01-03T09:51:31Z
teknosains:ART
KERANGKA KERJA PERENCANAAN PENGEMBANGAN PRODUK SEBAGAI PENINGKATAN DAYA SAING INDUSTRI KECIL MENENGAH
Hartanto, Broto Widya
Subagyo, Subagyo
Teknik Industri; Teknik Produksi
Competitiveness; Functional decomposition; New product development; Quality function deployment; Small medium enterprise
This study developed a new product development planning framework for small and medium enterprise (SME) in creative industry sector to increase the business competitiveness. The development process referred to the stages of design science research. The development stage adapted the first two stages of the modular function deployment (MFD), those are the description stage of consumer need through the house of quality, and functional decomposition. The study explained that the application of MFD adaptation is effective and adequate to the creative SME condition. The technical concepts were able to be screened and scored by using pugh selection matrix. However, every technical concepts could not be described into detailed domain functions and means. Therefore, the addition of methods applied in parallel was carried out, that is the concept decomposition with the function means tree, and the technical solution synthesis with the axiomatic design so that the design process is easier to handle. It’s recommended to eliminate the zigzagging process in axiomatic design, since it has been done on the function means tree and the use of customer relationship management data base to support voice of customer.
Universitas Gadjah Mada
Universitas Gadjah Mada
Departemen Teknik Mesin dan Industri
2019-01-03
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
design science research; modular function deployment; quality function deployment, functional decomposition
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/35574
10.22146/teknosains.35574
Jurnal Teknosains; Vol 8, No 1 (2018): December; 26-38
Jurnal Teknosains; Vol 8, No 1 (2018): December; 26-38
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/35574/23446
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/35574/4550
Copyright (c) 2018 Broto Widya Hartanto, Subagyo Subagyo
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/35643
2019-01-03T09:51:32Z
teknosains:ART
PENGANALISIS KESEGARAN DAGING SAPI DAN DAGING BABI MENTAH BERDASARKAN KLASIFIKASI WARNA DAN KELEMBABAN
Nafiasari, Nadya Ayu
Handayani, Ariesta Martiningtyas
color sensor; humidity sensor; portable; microcontroller; freshness
There are many frauds involving the trade of beef. Traders do the fraud by replacing the beef it sells with pork. Also, the lack of consumer knowledge of the difference between beef and pork make these traders unscrupulous. Because we research by designing and creating systems that can identify and analyze the freshness of beef and pork. This system uses a color sensor as a color identifier in meat and humidity sensors to measure the level of freshness of meat. Also used is also a microcontroller as an acquirer and data processor. This system is designed to distinguish between beef and pork. This study involved data collection on beef and pork as much as 420 data. These data have shown that this system has an accuracy of 79%, 80%, 80%, 83%, 77% and 81% in identifying fresh beef, fresh pork, less fresh beef, less fresh pork, the cow is not fresh, and the pork is not fresh in sequence. This system is portable because it can be taken anywhere with a battery that supplies the power of this tool. With this system, consumers can distinguish between beef and pork and can know the level of freshness in each meat.
Universitas Gadjah Mada
2019-01-03
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/35643
10.22146/teknosains.35643
Jurnal Teknosains; Vol 8, No 1 (2018): December; 66-74
Jurnal Teknosains; Vol 8, No 1 (2018): December; 66-74
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/35643/23449
Copyright (c) 2018 Ariesta Martiningtyas Handayani, Nadya Ayu Nafiasari
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/35703
2018-09-07T18:25:51Z
teknosains:ART
APLIKASI STRUCTURAL EQUATION MODELLING (SEM) PADA KAJIAN PENGARUH KELEMBAGAAN, MODAL SOSIAL JIWA KEWIRAUSAHAAN TERHADAP KINERJA USAHA BUDIDAYA IKAN NILA DI KABUPATEN SLEMAN
Mulyaningtiyas, Ratna Dewi
Ilmu Pertanian Minat Ekonomi Pertanian
Entrepreneurial Spirit; Farm Performance; Institutional; Social Capital; Structural Equation Modelling (SEM) Analysis
Social capital becomes the main capital that must be owned by an entrepreneur, thus increasing the entrepreneurial spirit. The purpose of this research is to know the institutional condition of the members of the group of tilapia fish farm, the social capital of the member of the cultivation group of tilapia, the entrepreneurial spirit, farm performance of the tilapia fishery group, and the institutional influence, social capital, entrepreneurial spirit to the business performance of the nila fish farming group in Sleman District. The method used in this research is a method of a mixed method, with 150 responders and analyzed with SEM. The results showed that more than 50% of institutional conditions, social capital, entrepreneurial spirit, and business performance of tilapia fish farming group members of beginners, middle, and main in Ngemplak and Cangkringan Subdistrict Sleman Regency has a high category. There is no significant institutional influence on the influence of social capital on the entrepreneurial. Institutional is not a moderator variable between social capital relations and entrepreneurial spirit. This indicates that the higher/ lower institutional will not result in changes the higher/ lower the influence of social capital on entrepreneurial.
Universitas Gadjah Mada
BPPDN DIKTI
2018-09-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Mix Method
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/35703
10.22146/teknosains.35703
Jurnal Teknosains; Vol 7, No 2 (2018): June; 83-93
Jurnal Teknosains; Vol 7, No 2 (2018): June; 83-93
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/35703/22050
Copyright (c) 2018 Ratna Dewi Mulyaningtiyas
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/36264
2019-01-03T09:51:32Z
teknosains:ART
PENGARUH RUTE SINTESIS TERHADAP KEEFEKTIFAN PENGIKATAN GUGUS PDETA PADA SINTESIS Fe3O4@SiO2@PDETA
Susanto, Susanto
Prasdiantika, Ricka
Kimia, Kimia Anorganik
Effectiveness binding; Magnetite; Propyldiethylene-triamine; Silica modified; Synthesis routes
Synthesis of Fe3O4@SiO2 modified with propyldiethylenetriamine (Fe3O4@SiO2@PDETA) with variation of synthesis routes have been investigated. Research was begun with synthesis of Fe3O4 using dispersion agent of trisodium citrate at coprecipitation system through stirring using ultrasonic wave. Coating magnetite with propyldiethylenetriamine modified silica was carried out through sol-gel process with two different mixing sequences of raw materials (two synthesis routes) with main materials of Fe3O4 synthesized, N-[3-(Trimethoxysilyl)propyl]-diethylenetriamine (TMSPDETA) and Na2SiO3. The products were characterized by fourier transform infrared (FTIR) spectrophotometer and scanning electron microscope-energy dispersive X-ray (SEM-EDX). Results indicate that Fe3O4@SiO2@PDETA has been synthesized succesfully. Fe3O4@SiO2@PDETA synthesized through route 1 (magnetite mixed with a mixture TMSPDETA and Na2SiO3) contains more propyldiethylenetriamine group than that of through route 2 (magnetite mixed with Na2SiO3 solution, then mixed with TMSPDETA)
Universitas Gadjah Mada
2019-01-03
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/36264
10.22146/teknosains.36264
Jurnal Teknosains; Vol 8, No 1 (2018): December; 39-47
Jurnal Teknosains; Vol 8, No 1 (2018): December; 39-47
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/36264/23447
Copyright (c) 2018 Susanto Susanto, Ricka Prasdiantika
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/36411
2020-02-24T07:59:22Z
teknosains:ART
Analisis Niat Penggunaan Knowledge Management System pada Perusahaan Pupuk di Indonesia
Muqtadiroh, Feby Artwodini
Nisafani, Amna Shifia
Alyosa, Muchammad Wijdan
Information System; Information System Success Model; IS/IT Evaluation; Adoption Technology; Human Behaviour
Behavioral Intention to Use; Power Security; TAM; perceived usefulness; perceived ease of use
PT ABC is one of the state-owned companies and one of the fertilizer producers in Indonesia. At present PT ABC has implemented a Knowledge Management System (KMS) in Human Resources Department. KMS serves as a tool for employees to consult in various fields regarding knowledge sharing, as a source of information and administration processes for payroll, leave, pensions and others. However, the existence of KMS is unable to guarantee the employees feel helped, for example, old employees who do not understand technology will have difficulty running KMS and some employees are not accustomed to dealing with information technology because they are used to consulting with humans. To measure the level of KMS acceptance for employees at PT ABC, this research uses the Chorng-Shyong Ong model which is a Technology Acceptance Model (TAM) model by utilizing the Power Issues.The purpose of this study was to find out the level of KMS acceptance in PT ABC based on the perspective of employees by identifying the basic factors, which affect cognitively and affectively to increase the internal beliefs, attitudes, and employee intention to use KMS through the recommendations given for the system improvement. And the results of this study indicate that the factors of perception to the usefulness, perceived ease of use, and the influences of others positively influence the intention to use KMS in PT ABC. There are only 3 of 7 hypotheses were accepted in accordance with the conditions that exist in PT ABC for the implementation of KMS. Of the 3 hypotheses accepted, the recommendations for improvement are derived based on the employee's suggestion in open questionnaires.
Universitas Gadjah Mada
2019-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Technology Acceptance Model (TAM)
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/36411
10.22146/teknosains.36411
Jurnal Teknosains; Vol 9, No 1 (2019): December; 44-56
Jurnal Teknosains; Vol 9, No 1 (2019): December; 44-56
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/36411/27060
Copyright (c) 2019 Feby Artwodini Muqtadiroh, dkk
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/36576
2018-09-07T18:03:49Z
teknosains:ART
PENGARUH PENAMBAHAN IRON MILL-SCALE DAN TEMBAGA SEBAGAI MATERIAL PELAT BIPOLAR
Ulmiah, Nisya
Arsyad, Fitri Suryani
Khaerudini, Deni Shidqi
Program Studi Magister Fisika; Jurusan Fisika Material; Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Sriwijaya Palembang
Aluminium Flake Powder; Bipolar Plates; Composite; Iron Mill-Scale
Bipolar plate is an important component of proton exchange membrane fuel cell (PEMFC), which provides fuel and oxidant to reactive sites, collect produced current, and mechanical support for the cell in the stacks. This study concerns to find the optimum composition and sintering temperature of iron mills-cale in matrix aluminium as bipolar plate material. This work firstly carried out by downsizing aluminium flake from scrap into powder using high energy milling for 120 min and treated the iron mill-scale at 300 and 1000 oC for 60 min. The waste aluminium powder, after sieving of 150 mesh, was mixing with iron mill-scale containing 30 to 50 vol.% using shaker mill for 10 min. The mixed powders were then pressed 300 MPa and sintered with temperature of 500-600 oC for 60 min and flowed with N2 gas. The structural changes, physical, and mechanical properties of the sintered sample were studied by optical micrograph, density, porosity, hardness Vickers, and electrical conductivity test. The result showed that the optimum composition Fe is 40 vol. % and sinter temperature is 550 oC. Conductivity value of 45.406 S/cm and hardness 183.96 HV hasn’t meet expectation. Cu added containing 4-10 vol. % Fe aims to improve physical properties composites as bipolar plate material PEMFC. The result showed Cu 4 vol. % Fe can increase conductivity value 64.481 S/cm and hardness 340.13 HV.
Universitas Gadjah Mada
Sriwijaya University
2018-09-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
-
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/36576
10.22146/teknosains.36576
Jurnal Teknosains; Vol 7, No 2 (2018): June; 137-147
Jurnal Teknosains; Vol 7, No 2 (2018): June; 137-147
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/36576/22055
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/36576/4951
Copyright (c) 2018 Nisya Ulmiah,Fitri Suryani Arsyad, dan Deni Shidqi Khaerudini
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/36756
2021-02-18T04:52:57Z
teknosains:ART
Tinjauan geografis wilayah potensial ibukota negara Indonesia
Sahamony, Anugerah A.
Muta’ali, Luthfi
Mei, Estuning Tyas Wulan Mei
Geografi
Capital; Land; Potential; Region; Relocation
The number of actual problems in the existing capital of Indonesia raises the idea to move the national government center to another region. From all parts of Indonesia republic territory, which region is most potential to be the location of the nation’s capital relocation? The aim of this research is to identify the most potential area to be the location of the national government center development. The method used is this research is a quantitative analysis with ‘zooming’ concept. The analysis process is divided into three stages with nine assessment indicators. The stages are; (1) identifying the most ideal provinces using spatial centrality, external accessibility, and the vulnerability of macro-scale natural disaster variables, (2) identifying the most potential province using the potential of social condition, the potential of infrastructure development, and the potential of national economic integration variables, and (3) determining the most suitable zone to be the location of nation’s capital development, which is using variables of physiological and regulational suitability (land availability, water aviability, and the vulnerability of micro-scale disaster). The results of this research indicate that Paser Distict in Kalimantan Timur is the most potential region to be the future nation’s capital of Indonesia.
Universitas Gadjah Mada
2020-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/36756
10.22146/teknosains.36756
Jurnal Teknosains; Vol 10, No 1 (2020): December; 86-101
Jurnal Teknosains; Vol 10, No 1 (2020): December; 86-101
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/36756/30636
Copyright (c) 2020 Anugerah A. Sahamony
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/36758
2020-02-24T07:59:22Z
teknosains:ART
Analisis Sistem Reliability dengan Pendekatan Reliability Block Diagram
Rosihan, Rifda Ilahy
Yuniarto, Hari Agung
Magister Teknik Industri
Reliability, Availability, Reliability Block Diagram, Reliability Analysis, Reliasoft Blocksim
Rendahnya reliability suatu sistem dapat mengakibatkan timbulnya downtime. Sedangkan rendahnya availability dapat mengakibatkan turunnya performance dari suatu sistem karena banyaknya waste time. Sistem extrussion pada PT. X berbentuk countinous process, apabila salah satu komponen pada mesin mengalami kerusakan akan menyebabkan terhentinya proses. Terdapat lima belas mesin yang tersusun secara seri pada proses extrussion, yakni uncoiler, welding, looping,extruder 90. Extruder 70, microwave 1,microwave 2, oven 1, oven 2,oven 3, cooling batch, breaking, bending, pulling, dan cutting. Sistem extrussion digambarkan dalam diagram Reliability Block Diagram. Tujuan dilakukannya penelitian ini adalah memodelkan sistem dengan menggunakan metode Reliability Block Diagram, mengetahui reliability dari keseluruhan system, dan mengetahui critically equipment. Data yang diolah merupakan data kerusakan mesin dari tahun 2006-2017, kemudian data tersebut diolah untuk menentukan reliability dari masing-masing komponen. Software yang digunakan adalah Software Reliasoft Blocksim 11. Hasil dari penelitian ini adalah nilai reliability sistem 0,431407 dengan t 100 jam.
Universitas Gadjah Mada
2019-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/36758
10.22146/teknosains.36758
Jurnal Teknosains; Vol 9, No 1 (2019): December; 57-67
Jurnal Teknosains; Vol 9, No 1 (2019): December; 57-67
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/36758/27064
Copyright (c) 2019 Rifda Ilahy Rosihan
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/36885
2019-07-24T15:34:10Z
teknosains:ART
ESTIMASI PRODUKSI JAGUNG (Zea Mays L.) DENGAN MENGGUNAKAN CITRA SENTINEL 2A DI SEBAGIAN WILAYAH KABUPATEN JENEPONTO PROVINSI SULAWESI SELATAN
Irsan, Laode Muhamad
Murti, Sigit Heru
Widayani, Prima
Geografi, Penginderaan Jauh
Remote Sensing, Sentinel 2A Image, Vegetation Index, Production Estimation
Production is a real benchmark in successful crop management which is the most important output economically. Currently, corn production estimates are generally done by conventional means through field surveys. This conventional way requires a high cost and a long time. Appropriate agricultural management requires precise and accurate information or data to increase production and economic benefits. Sentinel 2A remote sensing satellite data is potential to be used in assessment of corn production estimation. The purpose of this research is to make land use mapping and corn production estimation by using spectral approach. Estimated data were obtained from Sentinel 2A image by mapping land use and modeling of vegetation index (NDVI, SAVI, MSAVI, TSAVI, EVI, and ARVI) then compared with data of corn production in the field. The result of data analysis shows land use mapping using Sentinel 2A image has 91% confidence level. Calculation of production estimation can show the accuracy of 74% with RMSE 0.69. The highest correlation is estimated production with EVI index model with regression correlation equal to 74% which shows strong correlation on both variables. Estimated production of corn in 2017 in Jeneponto Regency is 178,660,69 tons.
Universitas Gadjah Mada
2019-01-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Pendekatan Spektral
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/36885
10.22146/teknosains.36885
Jurnal Teknosains; Vol 8, No 2 (2019): June; 93-104
Jurnal Teknosains; Vol 8, No 2 (2019): June; 93-104
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/36885/25002
Copyright (c) 2019 Laode Muhamad Irsan, dkk
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/36989
2018-07-13T15:33:47Z
teknosains:BR
SERI METHODS IN MOLECULAR BIOLOGY
Ardhani, Retno
Sejarah telah mencatat andil penelitian dalam menciptakan kehidupan yang lebih baik. Salah satunya penemuan antibiotik pada 1940an yang diawali dari pengamatan Alexander Fleming pada 1928 terhadap fenomena kematian bakteri Staphylococcus dalam cawan petri yang juga ditumbuhi jamur. Sebelum ditemukan antibiotik, tidak ada obat untuk pneumonia, gonorrhea atau demam rematik sehingga rumah sakit dipenuhi pasien sedangkan tidak banyak yang dapat dilakukan dokter untuk menolong. Tidak mengherankan jika kemudian Alexander Fleming bersama Howard Florey, Ernst Chain yang merupakan tim penemu antibiotik penicillin, dianugerahi Nobel Prize untuk Fisiologi dan Kedokteran pada 1945.
Universitas Gadjah Mada
2018-07-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/36989
10.22146/teknosains.36989
Jurnal Teknosains; Vol 7, No 1 (2017): December; 74-77
Jurnal Teknosains; Vol 7, No 1 (2017): December; 74-77
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/36989/21440
Copyright (c) 2018 Retno Ardhani
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/36990
2018-07-13T15:33:47Z
teknosains:EDT
EDITORIAL
Siswomihardjo, Widowati
Universitas Gadjah Mada
2018-07-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/36990
10.22146/teknosains.36990
Jurnal Teknosains; Vol 7, No 1 (2017): December; i-ii
Jurnal Teknosains; Vol 7, No 1 (2017): December; i-ii
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/36990/21441
Copyright (c) 2018 Widowati Siswomihardjo
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/37406
2019-07-24T15:34:10Z
teknosains:ART
KARBOKSIMETIL KITOSAN MEMPERPANJANG DAYA SIMPAN FILET NILA MERAH YANG DISIMPAN PADA SUHU RENDAH
Farida, Atika Nur
Husni, Amir
Puspita, Indun Dewi
Fish processing technology
carboxymetyl chitosan; red tilapia fillet; low temperature; shelf life
Kitosan diketahui memiliki aktivitas antibakteri, biodegradable, dan biokompatibel tetapi tidak larut dalam air. Modifikasi kitosan menjadi karboksimetil kitosan diharapkan mampu meningkatkan kelarutan dalam air tanpa mengubah bioaktivitas sehingga memungkinkan aplikasi sebagai antibakteri. Penelitian ini bertujuan mengkaji pengaruh pemberian karboksimetil kitosan sebagai bahan antibakteri terhadap daya simpan filet nila merah yang disimpan pada suhu dingin. Karboksimetil kitosan dibuat dengan cara mereaksikan senyawa kitosan dengan asam monokloroasetat pada suhu 900C selama 3 jam. Sampel filet nila merah segar direndam dalam larutan karboksimetil kitosan dengan konsentrasi 0%; 2%; 3% dan 4% selama 60 menit, kemudian disimpan pada suhu dingin 50C selama 12 hari. Parameter yang diamati tiap 4 hari yaitu Total Plate Count (TPC), Total Volatile Base (TVB), pH dan uji skoring. Hasil penelitian menunjukkan bahwapenggunaan konsentrasi karboksimetil kitosan yang berbeda memberikan pengaruh nyata (P
Universitas Gadjah Mada
Faculty of Agriculture, Universitas Gadjah Mada
2019-01-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Experimental
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/37406
10.22146/teknosains.37406
Jurnal Teknosains; Vol 8, No 2 (2019): June; 135-147
Jurnal Teknosains; Vol 8, No 2 (2019): June; 135-147
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/37406/25004
Copyright (c) 2019 Dr.Sc. Amir Husni
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/37634
2019-01-03T09:51:32Z
teknosains:ART
PENGARUH PEMINDAHAN KAWASAN PERKANTORAN PEMERINTAH KABUPATEN BOYOLALI TERHADAP PERKEMBANGAN PERKOTAAN BOYOLALI
Rohmah, Fitria Nur
Setiawan, Bakti
Urban and Regional Planning
Office area relocation; Urban development, Liveable city
The goal of movement was to improve the service through placing the governmental office area in one integrated location. Furthermore for spatial context it would be highly expected to be the instrument of urban development as well as to trigger the establishment in the expansion area. According to Urban Spatial Detailed Planning (RDTR) of Boyolali Year 2012 – 2032, the new location was the expansion of Boyolali City which included part of Mojosongo Dictrict covering Kemiri Sub-district, Mojosongo Sub-District and Kragilan Village. Those mentioned administrative regions were capable to be developed. This research aimed to identify the movement impact of governmental office area towards the development of Boyolali urban area. The methodologies being used in this study were deductive quantitative with the comparison between the condition of former and current governmental office area. The analysis was conducted with quantitative descriptive method and spatial descriptive. This study proved that the movement of governmental office area gave the impact in developing the urban area. The impact began with the land-use change from agriculture turning into the settlement, trade and service, and industrial areas, also gave the transformation for the accessibility improvement such as the addition of road network and the increment of land price. The result of analysis towards existing land-use in 2018 with land-use zonation according to RDTR Boyolali Urban Area 2012-2032 (map zonation and text) found out that there was deviation in the usage of green open space and industrial area. That issue showed that the urban development should have been included the instrumental implementation in case of controlling the space utilization for liveable city.
Universitas Gadjah Mada
2019-01-03
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Deduktif Kuantitatif
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/37634
10.22146/teknosains.37634
Jurnal Teknosains; Vol 8, No 1 (2018): December; 75-84
Jurnal Teknosains; Vol 8, No 1 (2018): December; 75-84
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/37634/23450
Copyright (c) 2018 Fitria Nur Rohmah
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/37727
2020-02-24T10:07:02Z
teknosains:ART
Pengaruh Material Konservasi Kolostrum terhadap Pelepasan Ion Ni
Aditya, Grahita
Nuraini, Hikmah
Sekarini, Whinahyu Aji
Colostrum with potassium sorbat 0,5%; Fermented colostrum; Ion Ni; Stainless steel orthodontic brackets
Nickel in orthodontic bracket will be released immediately in the oral cavity. The release of Ni ion may trigger type IV hypersensitivity reaction. Colostrum has a high content of lactoferrin which can inhibit T cells proliferation after nickel sensitization, and decrease oxidative stress. Adding potassium sorbat 0.5%, or fermentation of colostrum may extend colostrum storage. The purpose of this research is to know the difference of nickel ion release in colostrum with 0.5% potassium sorbat addition and fermented colostrum. Methods of the study were laboratory experimental with four groups, colostrum and 0.5% potassium sorbat, fermented colostrum, sodium fluoride and artificial saliva. The sample was incubated in 40°C for 7 days. Nickel ions was measured using an inductively coupled plasma-optical emission spectrophotometry (ICP-OES Perlun Elmer Optima 8300®). Ni ions release differences were tested using the Kruskall-Wallis and Mann Whitney test.The lowest rate of Ni ion release wasfound in the colostrum group with 0.5% potassium sorbat followed by the fermented colostrum group. Kruskal-Wallis test no significant difference (p> 0,05) in each study group. The Mann Whitney test found significant differences between colostrum solution with 0.5% potassium sorbat and sodium fluoride, and also artificial saliva. The results concluded that colostrum with 0.5% potassium sorbat inhibit the release of Ni ions.
Universitas Gadjah Mada
2019-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
experimental laboratory
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/37727
10.22146/teknosains.37727
Jurnal Teknosains; Vol 9, No 1 (2019): December; 12-20
Jurnal Teknosains; Vol 9, No 1 (2019): December; 12-20
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/37727/27066
Copyright (c) 2019 Grahita Aditya dkk
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/37731
2019-07-24T15:34:10Z
teknosains:ART
PERUBAHAN PERMUKIMAN NELAYAN PASCA REKLAMASI PANTAI DI KELURAHAN LETTE, KECAMATAN MARISO MAKASSAR
Darmansyah, Aidi
Sudaryono, Sudaryono
Swasto, Deva Fosterharoldas
Fisherman; Lette; Phenomenology; Settlement.
Lette is one of the sub-districts in Mariso Subdistrict, Makassar City which has a suburban area and the community has a livelihood as a fisherman. The condition of the Tanjung Bunga coastal and coastal area has undergone a change, which used to be the territorial waters that are now largely transformed into land, this change is due to the ongoing coastal and coastal reclamation process in the area of Tanjung Bunga. To meet the need for urban space, Lette fishermen have no choice but to be relocated from their place of origin to the flats. This study aims to determine the spatial, cultural, socio-economic changes in the fishing settlement of Lette and the factors that drive these changes. This study uses an inductive-qualitative method with a phenomenological approach. The results of the study show that the changes that occur are changes in coastal space, changes in settlement space and the creation of a central business, tourism and entertainment area. Factors driving these changes are changes in fishing boat access and entry, dock circulation, catching areas that are not potential, domestic activities, spatial space utilization, bale-bale culture, informal fishing activities, and new economic space.
Universitas Gadjah Mada
2019-01-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/37731
10.22146/teknosains.37731
Jurnal Teknosains; Vol 8, No 2 (2019): June; 158-167
Jurnal Teknosains; Vol 8, No 2 (2019): June; 158-167
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/37731/25007
Copyright (c) 2019 Aidi Darmansyah, dkk
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/38640
2018-09-07T18:15:49Z
teknosains:EDT
EDITORIAL
Siswomihardjo, Widowati
Sekolah Pascasarjana Universitas Gadjah Mada (UGM) mempunyai beragam minat serta program studi. Hal tersebut sesuai dengan Kebijakan Umum Universitas Gadjah Mada yang telah menetapkan tahun 2017-2022 sebagai tahap pendalaman dimana pendidikan pascasarjana lintas disiplin harus menjadi tulang punggung pengembangan ilmu pengetahuan. Dengan berbekal dasar keilmuan bidang teknologi, agronomi dan kesehatan, sehingga lahir hasil-hasil penelitian yang mendasar serta inovatif. Sebagai tuntutan dari pengembangan ilmu pengetahuan dan teknologi, maka Jurnal Teknosains Sekolah Pascasarjana UGM terbit setahun dua kali untuk menjadi wadah publikasinya hasil penelitian.
Universitas Gadjah Mada
2018-09-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/38640
10.22146/teknosains.38640
Jurnal Teknosains; Vol 7, No 2 (2018): June; ii
Jurnal Teknosains; Vol 7, No 2 (2018): June; ii
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/38640/22056
Copyright (c) 2018 Widowati Siswomihardjo
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/38641
2018-09-07T18:16:54Z
teknosains:BR
CLINICAL DECISION SUPPORT SYSTEMS THEORY AND PRACTICE
Wiharto, Wiharto
Clinical Decision Support Systems Theory and Practice, adalah buku teks dalam seri Health Informatics yang membahas tentang sistem pendukung keputusan klinis. Pada buku ini terbagi menjadi dua kelompok bahasan, Pertama membahas tentang dasar dalam mengembangkan sistem Clinical Decision Supprot System (CDSS) dan evaluasinya. Kedua, Aplikasi CDSS dalam praktik klinis. Bahasan tersebut menjadikan pembaca dapat memperoleh gambaran tentang dasar-dasar yang diperlukan dalam membangun dan mengaplikasikan CDSS dalam praktik klinis. Secara rinci buku tersebut terbagi menjadi 11 Bab, yang dapat dikelompokkan menjadi 7 Bab tentang konsep dalam pengembangan CDSS, dan 4 Bab tentang aplikasi CDSS dalam praktik klinis.
Universitas Gadjah Mada
2018-09-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/38641
10.22146/teknosains.38641
Jurnal Teknosains; Vol 7, No 2 (2018): June; 148-150
Jurnal Teknosains; Vol 7, No 2 (2018): June; 148-150
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/38641/22057
Copyright (c) 2018 Wiharto Wiharto
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/38737
2019-07-24T15:34:10Z
teknosains:ART
BUSINESS FEASIBILITY AND STRATEGY OF BUSINESS DEVELOPMENT OF CATFISH HATCHERY IN MINAPOLITAN AREA OF MAGELANG DISTRICT
Tri Cahyono, Riyadi
Suryantini, Any
Mulyo, Jangkung Handoyo
Business Feasibility; Catfish Hatchery; Minapolitan; Strategy Development.
This study aims to (1) identify the feasibility of catfish hatchery business and (2) to know the alternative and strategic priorities that can be applied in the development of catfish hatchery business in the Minapolitan Area of Magelang District. Research location in sub-District of Muntilan, Mungkid, and Sawangan, was chosen by purposive sampling. Respondents were chosen by snowball 42 as samples from farmers and stakeholders related to catfish hatchery business. Data analysis used on the business feasibility is BEP and R/C ratio criteria. The analysis of business development strategy uses SWOT analysis. The business feasibility analysis tool used is cost analysis, revenue, and nett revenue. Feasibility analysis result obtained BEP revenue of Rp53.587.484,00, BEP production of 255.087,71 unit fish, BEP price of Rp 56.00 per unit fish, and R/C ratio of 1,67. The development of strategy of catfish hatchery business are (1) maintaining good relationship with stakeholders and maximizing natural resources management for business development due to low interest of community on catfish hatchery business, and (2) utilizing expert resources (practitioners and academics) in the field of hatchery by government assistance to improve the quality of seed products and for expanding market size to meet the increased demand.
Universitas Gadjah Mada
2019-01-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/38737
10.22146/teknosains.38737
Jurnal Teknosains; Vol 8, No 2 (2019): June; 122-134
Jurnal Teknosains; Vol 8, No 2 (2019): June; 122-134
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/38737/25003
Copyright (c) 2019 Riyadi Tri Cahyono, dkk
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/38914
2021-02-18T04:51:58Z
teknosains:ART
Faktor Penentu Produksi pada Perkebunan Rakyat Kelapa Sawit di Kabupaten Mamuju Utara
puruhito, Dimas deworo
Jamhari, Jamhari
Hartono, Slamet
Irham, Irham
economic of agriculture
factor; oil palm; plantations; production; smallholder
There are three patterns of smallholder oil palm plantation in North Mamuju regency, ie plasma, IGA (Income Generating Activity), and mandiri (independent). Independent smallholder plantations are plantations managed by the community themselves without the involvement of others. While the partnership patterns can be divided into plasma and IGA. The partnership is a form of fostering of smallholders plantations by large private plantation in this area. This study aims to determine the amount of oil palm production on smallholder plantations and the factors that affect.This research was conducted in North Mamuju Regency, West Sulawesi Province which has the widest smallholder oil palm plantation in Sulawesi Island with various pattern. Four villages in two sub-districts were chosen purposively consideration with having three patterns of smallholder plantations. Farmer samples were taken using the snowball method after stratification of the pattern was carried out. Data analysis was performed with Cobb-Doulas function model in the normalized logarithm, using Eviews 6 software. These findings are the average production of 56,840 kg, with productivity of 20,300 kg/ha. Input of land area, NPK fertilizer, age of oil palm crops, outside family labor, frequency of estate sanitation and distance of estate to river is the determinant input to production. Input land area is found as the most elastic input. However, land use for oil palm plantations should still refer to existing legislation
Universitas Gadjah Mada
2019-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/38914
10.22146/teknosains.38914
Jurnal Teknosains; Vol 9, No 1 (2019): December; 58-76
Jurnal Teknosains; Vol 9, No 1 (2019): December; 58-76
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/38914/27063
Copyright (c) 2019 dimas deworo puruhito
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/38976
2020-02-24T07:59:22Z
teknosains:ART
Kinerja Usahatani Kelapa Sawit Lahan Gambut di Desa Dayun Kabupaten Siak
Naufal, Muhammad
Waluyati, Lestari Rahayu
Darwanto, Dwidjono Hadi
Agriculture
Faktor-faktor Produksi, Kelapa Sawit, Kontribusi Pendapatan, Lahan Gambut, Tingkat Kemiskinan,
Penelitian ini bertujuan untuk: 1) Menentukan faktor-faktor yang mempengaruhi produksi usahatani kelapa sawit. 2) Menentukan seberapa besar kontribusi pendapatan kelapa sawit terhadap total pendapatan rumah tangga petani sawit. 3) Menentukan tingkat kemiskinan petani lahan gambut (petani kecil). Sampel petani dalam penelitian ini diambil secara purposive sebanyak 55 responden di Desa Dayun Kabupaten Siak. Pengambilan sampel dilakukan secara purposif salah satunya dengan pertimbangan bahwa petani yang diwawancarai adalah petani yang memiliki lahan "Tanaman Produktif" dari kelapa sawit di lahan gambut. Analisis regresi berganda dengan pendekatan Ordinary Least Square (OLS) digunakan untuk menganalisis faktor-faktor yang mempengaruhi produksi lahan gambut dan untuk mengetahui kontribusi pendapatan kelapa sawit terhadap total proporsi proporsi pendapatan rumah tangga yang digunakan. Dalam menentukan tingkat kemiskinan, analisis dilakukan dengan menggunakan pendekatan berdasarkan pengeluaran konsumsi rumah tangga dan total pendapatan rumah tangga. Kebutuhan konsumsi minimum telah ditetapkan oleh BPS sebagai garis kemiskinan (GK) digunakan sebagai perbandingan dari dua pendekatan. Hasil penelitian menunjukkan bahwa variabel yang mempengaruhi produksi lahan gambut adalah luas lahan, penggunaan tenaga kerja, penggunaan pupuk dolomit, penggunaan pupuk KCL, penggunaan pupuk urea, dan tingkat pendidikan petani. Setengah dari total responden memiliki pendapatan dari pertanian kelapa sawit yang menyumbang lebih dari 50% terhadap total pendapatan rumah tangga mereka. Untuk tingkat kemiskinan petani di Desa Dayun telah ditemukan bahwa lebih dari 50% petani lahan gambut (petani kecil) di Desa Dayun berada dalam kategori tidak miskin.
Universitas Gadjah Mada
2019-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/38976
10.22146/teknosains.38976
Jurnal Teknosains; Vol 9, No 1 (2019): December; 77-85
Jurnal Teknosains; Vol 9, No 1 (2019): December; 77-85
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/38976/27061
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/38976/5886
Copyright (c) 2019 Muhammad Naufal, Lestari Rahayu Waluyati, Dwidjono Hadi Darwanto
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/39052
2020-07-13T04:50:21Z
teknosains:ART
Penerapan Metode Life-CycleCost dalam Perhitungan Evaluasi Ekonomi Jembatan untuk Penetuan Prioritas Penanganan Jembatan
Dananjoyo, Risang Aji
Aminullah, Akhmad
Budi Nugroho, Arief Setiawan
Civil Engineering and Environment
Life-Cycle Cost; IBMS; Bridge; Priority of Bridge Handling
Bridge oftentimes become a critical components of roads because it used to determine the maximum load capacity of a passing vehicle on the roads. The bridges require maintenance activity in the shape of general maintenance or periodically replacement while this is estimated in order that the bridge may continue to function properly. The economic evaluation of the Interurban Bridge Management System (IBMS) aims to determine the priority of bridge handling. One of the calculations required in NPV and IRR calculations used in priority handling is the cost of replacing the bridge. Over time, the Interurban Bridge Management System (IBMS) system must be constantly updated to continue to use in accordance with current circumstances and use new, better methods. This study uses Life-Cycle Cost (LCC) method as an alternative method to calculate the replacement cost of 5 bridges in Daerah Istimewa Yogyakarta in 2012. The IBMS method produces a priority sequence of bridge handling with Bogo bridge, Suru bridge, Winongo bridge, Kalasan B bridge and Duren bridge in sequence. The Life-Cycke Cost (LCC) method produces a priority sequence of bridge handling with Bogo bridge, Winongo bridge, Suru bridge, Kalasan B bridge and Duren bridge. The average initial cost of bridge replacement using both methods is 23.012%. The value earned using the Life-Cycle Cost method is always greater due to the addition of inspection fees, maintenance costs, and damage costs of the bridge.
Universitas Gadjah Mada
Departement of Civil Engineering of Universitas Gadjah Mada
2020-07-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Life-Cycle Cost
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/39052
10.22146/teknosains.39052
Jurnal Teknosains; Vol 9, No 2 (2020): June; 165-178
Jurnal Teknosains; Vol 9, No 2 (2020): June; 165-178
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/39052/28135
Copyright (c) 2020 Risang Aji Dananjoyo, Akhmad Aminullah, Arief Setiawan Budi Nugroho
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/39672
2021-12-05T17:30:12Z
teknosains:ART
Pemanfaatan citra kamera inframerah thermal (kit) untuk mendeteksi area inflamasi pada tubuh manusia
Limena, Mardon
Maslebu, Giner
Rondonuwu, Ferdy Semuel
Global Thresholding; Image Processing; Inflamation; TIC
Inflammation is an indication of an abnormality in the human body. Cases of inflammation occur accompanied by changes in temperature on the surface of the body. The location and location of the spread of inflammation cannot be seen solely by the human eye in detail. An imaging modality tool that is suitable for use in observing this problem is needed. In this study, the Thermal Infrared Camera (TIC) is used as an imaging modality. Samples in the form of a pair of legs in which one part of inflammation occurs are used as research objects. TIC is an imaging modality tool that can detect temperatures on the surface of an object quickly and is nondestructive. The results of the TIC image are processed using the global thresholding image processing method to distinguish between the inflammatory areas and normal areas more specifically. The results displayed indicate that there are differences in the image between the area of inflammation with the normal area of the patient's feet. The results of image processing data in the form of binary images show between the inflammatory area represented by white and vice versa the normal area represented by black. A comparison between the two conditions of the patient's feet before and after recovery shows the shrinkage of the area. There are two main results obtained in the exploration of this research, which is successful in distinguishing the inflammatory area from the normal area and the progress of recovery from the legs of the affected patient.
Universitas Gadjah Mada
2021-12-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/39672
10.22146/teknosains.39672
Jurnal Teknosains; Vol 11, No 1 (2021): December; 43-50
Jurnal Teknosains; Vol 11, No 1 (2021): December; 43-50
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/39672/32743
Copyright (c) 2021 Mardon Limena, Giner Maslebu, Ferdy Samuel Rondonuwu
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/40502
2020-07-13T04:50:21Z
teknosains:ART
Pengaruh campuran bahan bakar pertalite-bioetanol biji sorghum pada mesin bensin
Sebayang, Abdi Hanra
Ibrahim, Husin
Dharma, Surya
Silitonga, Arridina Susan
Ginting, Berta Br
Damanik, Natalina
Teknik Mesin
Bioethanol
The depletion of fossil fuels, rising of earth temperatures and declining of air quality are an unavoidable phenomenon today. This condition is a result of increased and excessive use of fossil fuels. Bioethanol fuel is one solution to reduce this problem that is sourced from renewable raw materials. Sorghum seeds are raw materials that have the potential to be made bioethanol due to they have a high carbohydrate content (70%). The test is performed the use of pertalite-bioethanol blends fuels was on a four-stroke gasoline engine without modification. The percentage of the mixture volume of fuel used is 10% bioethanol-90% pertalite (E10), 15% bioethanol-85% pertalite (E15) and 20% bioethanol-80% pertalite (E20). Engine speeds vary from 1000 to 4000 rpm, and properties of the sorghum seeds bioethanol-pertalite blends are measured and analyzed. The purpose of this study is to investigate engine performance and exhaust emissions at gasoline engine by using the sorghum seeds bioethanol-pertalite blends with different mixed ratios (E10, E15 and E20). The Engine performance includes engine torque, brake specific fuel consumption (BSFC) and thermal brake efficiency (BTE) analyzed. In addition, carbon monoxide (CO), hydrocarbon (HC), and nitrogen oxide (NOx) emissions are measured as gasoline engine exhaust emissions. The results show that BSFC decreased while BTE increased for a fuel blends containing 20% bioethanol at 3500 rpm engine speed, with each maximum value of 246.93 g/kWh and 36.28%. It is also found that CO and HC emissions are lower for the sorghum seeds bioethanol-pertalite blends. Based on the research results, it can be concluded that the sorghum seeds bioethanol-pertalite blends can improve engine performance and reduce exhaust gas emissions.
Universitas Gadjah Mada
Politeknik Negeri Medan
2020-07-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Experiment
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/40502
10.22146/teknosains.40502
Jurnal Teknosains; Vol 9, No 2 (2020): June; 91-104
Jurnal Teknosains; Vol 9, No 2 (2020): June; 91-104
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/40502/28127
Copyright (c) 2020 Abdi H. Sebayang; Dharma; A.S. Silitonga; Ginting;dan N. Damanik
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/40604
2020-02-24T07:59:22Z
teknosains:ART
Problematika Pengembangan Padi Organik di Sawangan Magelang serta Peluang Sertifikasi Internasional
PhD, Subejo
Irham, Irham
Sari, Pinjung Nawang
Widada, Arif Wahyu
Nurhayati, Azizatun
Devi, Laksmi Yustika
Anatasari, Esti
Agriculture/Agricultural socio-economics
International certification; Organic rice; Problems; Sawangan; Supporting factors
Organic farming has been remarkably evolving in many areas of Indonesia for responding environmental issues and producing healthy foods. Organic rice is a type of organic farming product of a system which has been widely practiced including in Sawangan Village Magelang District as one of pioneering area on organic rice development in Central Java Province. This study is directed to analyze supporting factors, various problems faced on the development of organic rice and opportunity for getting international organic certification. A study has been done through household interview (30 farmers), indepth interview with key informants and Focus Group Discussion (FGD) at agricultural office of Magelang District. Data analysis used in this study are statistical descriptive and categorical qualitative. Results of the study show that: (1) performance of organic rice gradually getting better and productivity level has been getiing closer to conventional high external input rice farming, (2) supporting factorson improvement of organic rice include healthy rice production initiated through integrated pest management,transformative group leadership, supports from related stakeholders, high economic incentive, improvement of market networking, product certification, ICT application and favourable natural resource endowment, (3) Problems faced on the development of organic rice include variety of product quality among farmers, price variety and fluctuation, difficulty in organic seed access, mixing area of organic and anorganic rice farming, (4) Strategies for improving opportunity to get international organic sertification include innovation on product diversification, application of fresh product certification, modernization of machine for rice processing.
Universitas Gadjah Mada
PUPT Kemenristekdikti 2018
2019-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Mixed method
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/40604
10.22146/teknosains.40604
Jurnal Teknosains; Vol 9, No 1 (2019): December; 29-43
Jurnal Teknosains; Vol 9, No 1 (2019): December; 29-43
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/40604/27052
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/40604/6259
Copyright (c) 2019 Subejo PhD
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/40944
2020-07-13T04:50:21Z
teknosains:ART
Stochastic frontier analysis on technical efficiency of strawberry farming in purbalingga regency Indonesia
Wijayanti,, Irene Kartika Eka
Jamhari,, Jamhari
Darwanto, Dwidjono, Hadi
Suryantini, Any
Agriculture economic
Stochastic frontier, technical efficiency; strawberry farming;Purbalingga Regency
The objective of this study is to determine technical efficiency and factors affecting technical inefficiency of strawberry farming in Purbalingga Regency. This study was conducted in Karangreja Subdistrict, Purbalingga Regency, Central Java Province. Purposive sampling method was utilized to select 100 farmers as the respondents. All of whom have been running their farm business for at least three years consecutively from 2015 to 2017. Stochastic frontier production function was applied to measure technical efficiency and factors affecting technical inefficiency. The findings show that strawberry farming in Purbalingga Regency, Central Java Province, is technically efficient with efficiency number varies between 26.50-99.40% and the average efficiency number of 77.80%. Furthermore, the results indicate that the farmers’ formal education and the number of household members significantly affect the technical efficiency of strawberry farming.
Universitas Gadjah Mada
2020-07-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
descriptive quantitative
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/40944
10.22146/teknosains.40944
Jurnal Teknosains; Vol 9, No 2 (2020): June; 105-115
Jurnal Teknosains; Vol 9, No 2 (2020): June; 105-115
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/40944/28128
Copyright (c) 2020 Irene Kartika Eka Wijayanti;Jamhari; Dwidjono Hadi Darwanto; dan Any Suryantini
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/41053
2021-02-18T04:52:57Z
teknosains:ART
Design of ergonomic chair for grinding operation
Emaputra, Andrean
Hidayat, Taufik
Susilo, Gunawan Budi
ergonomic; industrial engineering
Adjustable-Ergonomic Chair; Anthropometric Data; Grinding Operation; REBA; Yogyakarta
One of essential production activities is grinding process. This process mainly involves the constant activity of eroding a surface to be smoother or more evenly, cutting a workpiece, creating profiles like angles and arches, sharpening a cutting tool, and finishing a final product. Meanwhile, there is no study evaluating the risk levels of workers working on grinding, and there is no unique chair specifically designed for the process. Therefore, this study aims to assess the risk levels of a grinding worker and to propose the design of an ergonomic chair that is adjustable, comfortable, durable, and keen to be used. The risk levels of the grinding workers were evaluated using REBA, while the ergonomic chair design was based on anthropometric data taken from 4 grinding workers in Bantul, Special Region of Yogyakarta, Indonesia. The researchers selected a buttock-popliteal length (seat depth), lower leg length (popliteal height) and hip breadth sitting as anthropometric measures to make a chair design for the grinding operations. After that, the existing adjustable chair designs were also considered and evaluated to get better adjustableergonomic chair design for the grinding operations. The results show that it is important that the stakeholders improve most of the grinding operations of the workers, especially by using an ergonomic chair design for grinding operation that is adjustable, comfortable, durable, and reliable. The chair height can be adjusted from 361-414 mm to adapt with the users, and the variation in product height aims to prevent bending on the back. Finally, the grinding chair can reduce the risk level from the high and medium level to the low-risk levels of working postures.
Universitas Gadjah Mada
Kemenristekdikti, Indonesia
2020-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/41053
10.22146/teknosains.41053
Jurnal Teknosains; Vol 10, No 1 (2020): December; 48-63
Jurnal Teknosains; Vol 10, No 1 (2020): December; 48-63
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/41053/30633
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/41053/6375
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/41053/9639
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/41053/9654
Copyright (c) 2020 Andrean Emaputra
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/41113
2021-08-05T14:02:05Z
teknosains:ART
Composite resin restoration with fiber reinforced composite after root canal treatment of necrotic pulp tooth with gumboil
Natalia, Dessy
Kristanti, Yulita
Root canal treatment; Gumboil; Short fiber reinforced composite
Gumboil is inflammation reaction in the gum caused by pulp infection. Gumboil is seen as an oral lesion characterized by a soft erythematous papule where a periapical abcess is draining into the oral cavity. An adequate root canal treatment can cure gumboil and remove bacteria from the root canal. To support the success of root canal treatment, final restoration used in this case is composite resin restoration with reinforcing fiber (short fiber reinforced composite). The purpose of this treatment was to restore the functions of tooth in mastication and preserving the supporting tissue. A female patient age 23 years old came with complaints of pain in the lower right mandibular molar accompanied by swelling of the gums around the teeth since a week ago. Swelling is intermittent since last 3 months. The tooth have been restored for about 3 years ago. Clinical examination showed a positive percussion, positive palpation, negative vitality, and negative mobility. Radiographic examination showed bifurcation and periapical lesions. Root canal treatment is performed with crown down preparation technique and followed by direct composite resin restoration with short fiber reiforced composite. The success of root canal treatment followed by composite resin restoration with short fiber reinforced fiber is marked by the absence of complaints as well as the dissappearance of gumboil.
Universitas Gadjah Mada
2021-08-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/41113
10.22146/teknosains.41113
Jurnal Teknosains; Vol 10, No 2 (2021): June; 103-110
Jurnal Teknosains; Vol 10, No 2 (2021): June; 103-110
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/41113/31874
Copyright (c) 2021 Dessy Natalia
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/41483
2020-07-13T04:50:21Z
teknosains:ART
Mapping of pga value using psa method in West Halmahera North Maluku
Ningrum, Rohima Wahyu
Suryanto, Wiwit
Fauzi, Hendra
Mei, Estuning Tyas Wulan
Geofisika dan Geoteknik
PGA, PSHA, WEST HALMAHERA
The earthquake that occurred in the West Halmahera region was very detrimental, even though the human casualties were not very significant. But it will affect the stability and capacity of a region in terms of regional development. The mapping of earthquake-prone areas is carried out by a probabilistic seismic hazard analysis (PSHA) method to analyze soil movement parameters, namely Peak Ground Acceleration so that it can determine earthquake-prone areas in West Halmahera. The results of seismic hazard analysis show that the West Halmahera area is an area that is relatively prone to earthquake hazards because it is still strongly influenced by subduction (megathrust) earthquakes from the Philippine plate, Maluku sea and Sangihe. This is indicated by the value of earthquake acceleration on the Peak Ground Acceleration for the 500 year return period of around 0.38 - 3.69 g and 0.30 - 3.69 g for the 2500 year return period.
Universitas Gadjah Mada
2020-07-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Probabilistic Seismic Hazard Analysis (PSHA)
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/41483
10.22146/teknosains.41483
Jurnal Teknosains; Vol 9, No 2 (2020): June; 116-126
Jurnal Teknosains; Vol 9, No 2 (2020): June; 116-126
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/41483/28129
Copyright (c) 2020 Rohima Wahyu Ningrum, Wiwit Suryanto, Hendra Fauzi, Estuning Tyas Wulan Mei
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/41982
2021-02-18T04:52:57Z
teknosains:ART
Rasio natrium karbonat dalam ekstraksi berpengaruh pada mutu natrium alginat sargassum muticum
Nurkhanifah, Sovia Indah
Husni, Amir
Fish processing technology
Na2CO3 Ratio; Extraction; Quality; Sodium Alginat; Sargassum muticum
Brown seaweed is one of Indonesia’s biological resources which has good potential as source for alginate which can be used for the food and non-food industries. Alginate was most widely used in the textile sector around 50%, food industry 30%, paper industry 6%, welding rods 5%, pharmacy 5% and other 4%. The process of taking alginate from brown seaweed can be done by extraction. Several studies have been carried out in an effort to improve the yield of alginate extraction. The objective of this study was to determine the effect of the ratio of Na2CO3 and obtain the best ratio of Na2CO3 for producing sodium alginate from Sargassum muticum. The ratio of Na2CO3 used was 1:10, 1:20, 1:30, 1:40, 1:50 (w/v) and observations of alginate quality included yield (%), viscosity (cps), pH, water content (%), whiteness degree (%), ash content (%) and functional groups. The results showed that the higher the ratio of Na2CO3 produced the lower viscosity and showed significantly different values but yield, pH, water content, whiteness degree, and ash content were not significantly different. The functional groups at the ratio 1:20, 1:30, and 1:40 (w/v) showed the alginate that were in accordance with the standard. The best ratio of Na2CO3 from this study was 1:20 (w/v) because it had a medium viscosity, besides that, the yield, pH, water content, whiteness degree, and ash content also accordance to the quality of alginate standard.
Universitas Gadjah Mada
Ditlitabmas Dikti
2020-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Experimental
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/41982
10.22146/teknosains.41982
Jurnal Teknosains; Vol 10, No 1 (2020): December; 10-18
Jurnal Teknosains; Vol 10, No 1 (2020): December; 10-18
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/41982/30650
Copyright (c) 2019 Amir Husni
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/42139
2020-07-13T04:50:21Z
teknosains:ART
Analisis pengendalian mutu bahan baku utama susu kambing bubuk di bumi haijau Yogyakarta
Agustina, Yohana
Agriculture, Agribussines
Pengendalian Mutu; Peta Kendali P; Diagram Sebab-Akibat; Susu Kambing Bubuk.
Pengendalian mutu suatu produk memegang peranan penting dalam memberikan kepuasan dan mempertahankan loyalitas pelanggan. Tujuan penelitian ini adalah untuk mengetahui proses pengendalian mutu bahan baku, dan mengidentifikasi faktor-faktor penyebab dominan dalam kegagalan mutu bahan baku susu kambing bubuk di Bumiku Hijau Yogyakarta. Penelitian menggunakan metode deskriptif. Data yang digunakan adalah jumlah kegagalan bahan baku selama Januari sampai dengan Mei 2018. Teknik analisis data menggunakan statistical quality control, yaitu peta kendali p (p-chart) dan diagram sebab-akibat untuk mengidentifikasi penyebab kegagalan produk. Hasil dari analisis peta kendali p (p-chart) diperoleh nilai LCL (0,00), CL (0,00), dan UCL (0,02), menunjukkan bahwa terdapat 6 titik yang melewati batas atas kendali statistik selama Januari sampai dengan Maret 2018. Total kegagalan bahan baku (reject) selama Januari sampai dengan Maret 2018 adalah 18 liter susu kambing murni. Jenis penyebab kegagalan bahan baku yang paling banyak adalah karena warna susu kambing keruh dan aromanya tidak segar. Hasil identifikasi faktor penyebab kegagalan bahan baku dominan dengan menggunakan diagram sebab akibat menunjukkan bahwa faktor-faktor penyebab kegagalan bahan baku antara lain adalah peternak (man), peralatan produksi (machine), dan lingkungan (environment).
Universitas Gadjah Mada
Jangkung Handoyo Mulyo, Lecturer
University of GadjahMada
Magister of Agriculture Management and Lestari Rahayu Waluyati, Lecturer
University of Gadjah Mada
Magister of Agriculture Management
2020-07-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Statistical Quality Control Analysis
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/42139
10.22146/teknosains.42139
Jurnal Teknosains; Vol 9, No 2 (2020): June; 127-138
Jurnal Teknosains; Vol 9, No 2 (2020): June; 127-138
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/42139/28130
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/42139/6683
Copyright (c) 2020 Yohana Agustina, Jangkung Handoyo Mulyo,
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/42374
2019-01-03T09:51:31Z
teknosains:EDT
EDITORIAL
Siswomihardjo, Widowati
Sekolah Pascasarjana Universitas Gadjah Mada dengan berbagai program studinya menjadi salah satu tempat untuk berkembangnya ilmu-ilmu lintas disiplin. Bukan hanya permasalahan bangsa saja, tetapi juga permasalahan dalam kehidupan manusia di bumi serasa tidak pernah ada habisnya. Dengan dasar keilmuan bidang teknologi, agronomi serta kesehatan, Sekolah Pascasarjana Universitas Gadjah Mada menunjukkan kepeduliannya terhadap beragamnya permasalahan tersebut. Harapannya semoga hasil penelitian yang ditampilkan melalui penerbitan ini dapat memberikan kontribusi akademik sebagai solusi terhadap permasalahan dalam kehidupan.
Universitas Gadjah Mada
2019-01-03
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/42374
10.22146/teknosains.42374
Jurnal Teknosains; Vol 8, No 1 (2018): December; i-ii
Jurnal Teknosains; Vol 8, No 1 (2018): December; i-ii
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/42374/23442
Copyright (c) 2018 Widowati Siswomihardjo
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/42375
2019-01-04T00:14:19Z
teknosains:BR
DENTAL MATERIALS FOUNDATIONS AND APPLICATIONS
Widyasrini, Dyah Anindya
Rongga mulut merupakan lingkungan yang amat beragam kondisinya. Material yang akan digunakan dalam lingkungan tersebut harus mampu bertahan dalam segala kondisi. Dalam lingkungan rongga mulut hal-hal ini sangat biasa terjadi: perubahan temperatur yang drastis, tekanan mekanis yang besar, melekatnya komunitas mikroorganisme pada semua permukaan maupun adanya serangan bahan kimiawi dari makanan maupun cairan tubuh. Memahami dasardasar ilmu material merupakan kunci untuk dapat mengembangkan material yang cocok dengan lingkungan mulut serta relevan dengan kenyataan klinis yang dihadapi. Dengan mengerti dasar ilmu material diharapkan pembaca dapat memprediksi keberhasilan perawatan dengan material kedokteran gigi. Buku yang ditulis oleh John M. Powers dan John C. Wataha ini menjelaskan material dental dari hal yang paling dasar, yaitu atom penyusunnya, hingga aplikasinya dalam praktik klinis. Consice but precise, begitulah cara materi dalam buku ini disampaikan. Diulas dalam 15 bab plus 1 bab pendahuluan dengan alur yang runtut pada tiap bahasannya. Dimulai dari sifat-sifat material, kegunaan, manipulasi spesifik, serta aplikasi klinis dalam dunia kedokteran gigi, sehingga memudahkan pembaca dalam memahami dan membandingkan tiap material. Setiap akhir dari bab dalam buku ini juga dilengkapi dengan self-test questions, untuk mengukur seberapa dalam pemahaman pembaca terhadap materi yang telah disajikan. Tentunya berbagai material dan teknologi terbaru yang digunakan di kedokteran gigi juga tidak lupa diuraikan.
Universitas Gadjah Mada
2019-01-03
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/42375
10.22146/teknosains.42375
Jurnal Teknosains; Vol 8, No 1 (2018): December; 85-88
Jurnal Teknosains; Vol 8, No 1 (2018): December; 85-88
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/42375/23443
Copyright (c) 2019 Dyah Anindya Widyasrini
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/43291
2021-02-18T04:52:57Z
teknosains:ART
Karakteristik temperatur fluida dingin pada grooved double pipe heat exchanger
Sunu, Putu Wijaya
Darmawa, I Putu
Mulawarman, Anak Agung Ngurah Bagus
Suarta, I Made
Sopan Rahtika, I Putu Gede
Groove; Circumferential; Heat exchanger; Temperature acceleration; Temperature characteristics
Heat exchangers have widespread applications in many industrials process. There are many kind of heat exchanger. One of the simply heat exchanger is double pipe heat exchanger. The need for lightweight and enhancing the heat transfer of heat exchanger accomodated by surface engineering. One of the surface passive technique applications is groove. Incising groove in pipe as concerned wide consideration as it need no additional power, decrease in weight of system and hence give more benefit in heat transfer. The characteristics of heat transfer in grooved double pipe heat exchanger was investigated experimentally in this article. The aim of this investigation is to reveal the phenomenon of temperature characteristics of cold fluid in the heat transfer process in the grooved double pipe heat exchanger. In this study, water are used as both hot and cold fluid with counter flow pattern, and the water flow rate equal to 15 lpm for both fluid. Grooves were incised on the annulus area in the outer wall of tube side with rectangular shape and circumferential pattern. The characteristics of groove dimension that are height of groove is 0,3 mm; distance between grooves is 8 mm; and the groove space which is as independent variables are 1 mm and 2 mm. The data from 1 mm and 2 mm grooves space were compared with no grooved double pipe heat exchanger data (smooth pipe). The hot fluid temperature is 50 ± 0,50C while the cold fluid temperature is 30 ± 0,50C. The temperature data on the inlet and outlet side of heat exchangers for smooth pipe, 1 mm and 2 mm groove space were compared to find out the characteristics of increasing cold fluid temperature. This study used the temperature rate and temperature acceleration method to compare the variables. The result shows that groove installation increases the amount of heat absorbed by cold fluid. The heat exchanger with 1 mm groove spaces, was able to absorb heat about ± 2.3 % better than heat exchanger with 2 mm groove space and 13,1 % better than heat exchanger with no groove.
Universitas Gadjah Mada
DIPA Politeknik Negeri Bali
2020-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/43291
10.22146/teknosains.43291
Jurnal Teknosains; Vol 10, No 1 (2020): December; 64-74
Jurnal Teknosains; Vol 10, No 1 (2020): December; 64-74
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/43291/30634
Copyright (c) 2020 Putu Wijaya Sunu, I Putu Darmawa, A.A.N.B Mulawarman, I Made Suarta, I Putu Gede Sopan Rahtika
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/43852
2021-08-05T14:02:05Z
teknosains:ART
Analisis sitogenetik sel epitel mukosa bukal pekerja stasiun pengisi bahan bakar umum di kota Yogyakarta
Tandelilin, Regina TC.
Widita, Elastria
Puspita, Rini Maya
Mun, Tang Sze
Kedokteran Gigi
buccal cells; pycnosis; karyolysis; karyorrhexis; petrol station workers
Workers employed in petroleum station have a high-risk exposure to a wide range of toxic compounds with known mutagenic and carcinogenic potential. Cytogenetic damage might have happened if they continuously exposed to petroleum derivatives. This study aimed to analyse the cytogenetic damage in exfoliated buccal cells among petroleum station workers in Yogyakarta City. This cross-sectional study was carried out on 30 petrol station workers who are working at a different petrol station in Yogyakarta and the control group consisted of 30 healthy subjects. Examination for all subjects included frequencies of nuclear abnormalities, including pycnosis, karyorrhexis, and karyolysis. Cytological preparations were stained according to papanicolaou reaction and analyzed under light microscope for making a score for degenerative nuclear alterations (pycnosis, karyolysis and karyorrhexis). Analysis of buccal cells revealed that frequencies of pycnosis and karyorrhexis in petrol station workers were significantly higher than the control group (P<0.05). Conversely, there was no significant difference in karyolisis among groups. These findings indicate that the petrol station workers are under the risk of significant cytogenetic damage, particularly pycnosis and karyorrhexis.
Universitas Gadjah Mada
Fakultas Kedokteran Gigi, Universitas Gadjah Mada
2021-08-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
observasional, potong lintang
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/43852
10.22146/teknosains.43852
Jurnal Teknosains; Vol 10, No 2 (2021): June; 160-169
Jurnal Teknosains; Vol 10, No 2 (2021): June; 160-169
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/43852/31879
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/43852/7313
Copyright (c) 2021 Regina TC. Tandelilin
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/43897
2020-07-13T04:50:21Z
teknosains:ART
Berkumur rebusan daun sirih merah (paper crocatum) konsentrasi 10% meningkatkan ph saliva pada lansia penderita diabetes melitus tpe 2
Tandelilin, Regina TC.
Sandy, Leny Pratiwi Arie
Hondro, Meydistin Juwita
preventive dentistry
pH of saliva; red betel leaves; elderly; diabetes mellitus type 2
Dental caries is the major dental and oral health problems in Indonesia and world wide. Alteration in the saliva acidity level (pH) in the oral environment plays an important role in dental caries. Red betel leaf (piper crocatum) is a herbal plant that commonly found in Indonesia. Red betel leaf contains alkaloid, flavonoid, tannin and essential oil which have antibackterial activities. The aim of this study was to determine the acidity change (pH) of saliva in elderly people with diabetes mellitus type 2 after gargling of 10% boiled red betel leaves. The subjects of this study were 30 persons who divided randomly into two groups i.e treatment group and control group. Each group consisted of 15 persons. In the treatment group, the subjects gargled using 10% boiled red betel leaves, while in the control group the subject gargled using aquades. The saliva was collected on each time treated and followed by pH measuring. The data analysis was conducted by Independent t-test statistic (p≤0,05). The results showed that there was an effect of increasing salivary acidity (pH) of saliva after gargling boiled of red betel leaf (Piper crocatum) in elderly people with diabetes mellitus type 2. The change of acidity level (pH) of saliva was increased significantly at 5th to 15th minute from 5.33 to 6.67 after gargling boiled red betel leaves concentration of 10%. The acidity level range stated above indicates a normal
Universitas Gadjah Mada
2020-07-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Experimental design
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/43897
10.22146/teknosains.43897
Jurnal Teknosains; Vol 9, No 2 (2020): June; 139-147
Jurnal Teknosains; Vol 9, No 2 (2020): June; 139-147
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/43897/28131
Copyright (c) 2020 Regina TC. Tandelilin, Leny Pratiwi Arie Sandy, dan Meydistin Juwita Hondro
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/43985
2021-02-18T04:52:57Z
teknosains:ART
Pencucian material magnetik pasir besi lansilowo menggunakan larutan asam klorida
Prasdiantika, Ricka
Susanto, Susanto
Iron Sand; Magnetic Material; Solution of Chloride Acid;Washing
Iron sand was widely used in various fields such as in the manufacturing of magnets, cement, and steel. Iron sand has the main composition of iron oxide and several impurities of oxides. To remove these impurities, iron sand needs to be washed with acidic solution such as HCl solution. This study aims to minimize impurities in the magnetic material of Lansilowo iron sand. Iron sand was prepared using an external magnet to obtain magnetic material. The magnetic material was washed using distilled water and 0.5 M HCl solution. The drying process was carried out at 80oC for 24 hours. Magnetic material was crushed, weighed, and characterized. Material characterization was carried out using X-Ray Fluorescence (XRF), Fourier Transform Infrared (FT-IR) Spectrophotometer, and X-Ray Diffractometer (XRD). The Characterization results showed that washing of magnetic material using H2O-HCl 0.5 M was able to increase the percentage of Fe element composition in Lansilowo iron sand. The iron oxide contained in Lansilowo Iron Sand remains magnetite. The washing the iron sand magnetic material using 0.5 M HCl solution succeeded in removing impurities such as Mg, Pr, K, Cl, P, S, Co, Ce, and Sn as well as reducing the percentage of the Si and Al elements.The washing magnetic material using 0.5 M H2O-HCl produced higher XRD intensities than those washed with H2O. The washing magnetic material with 0.5 M H2O-HCl was result particle size of 37,70 ± 4,62 nm and crystallinity of 53.12%.
Universitas Gadjah Mada
2020-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/43985
10.22146/teknosains.43985
Jurnal Teknosains; Vol 10, No 1 (2020): December; 75-85
Jurnal Teknosains; Vol 10, No 1 (2020): December; 75-85
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/43985/30635
Copyright (c) 2020 Ricka Prasdiantika, Susanto Susanto
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/44013
2020-07-13T04:50:21Z
teknosains:ART
Pementaan dan faktor risiko sosioekonomi dan perilaku terhadap kejadian penyakit periodontal di kecamatan pundong kabupaten bantul
Setiawan, Prayudha Benni
Hartono, Hartono
Tandelilin, Regina Titi Christinawati
Nur'aini, Bekti
Master of Public Health
Periodontal Disease; Socioeconomic; Behavioural; GIS
Periodontal disease is pathological damage that affects the tooth supporting tissues. Systemic conditions largely influence its pathogenesis. Besides, environmental, socioeconomic, behavioural, environmental and geographic factors can affect individuals experiencing periodontal disease. Geographic Information System (GIS) can be used to analyze the differences of these factors, especially those relating to geographic differences, demographic factors, social, etc. Pundong district has geographical and socio-economic variation. This study aims to describe the distribution of patients with periodontal disease based on socioeconomic and behavioral factors. The type of study was an observational analytic survey with a cross-sectional design. The subject of research is determined by Registry Based Study approach where Pundong Community Health Center as the primary data source in this research. Independent variable is periodontal disease, while the dependent variable is a socioeconomic factor and health behaviour. Overview of periodontal disease mapping using ArcGIS, with an overlay method or combining two layers, namely the administrative map of Pundong District and coordinates of patients with periodontal disease. Univariate and bivariate analysis using Stata to analyze the distribution and the relationship of each variable. Generalized periodontitis often occurs in Seloharjo. Seloharjo has the most deprived people in Pundong Sub-district. The variables significantly associated with periodontal disease severity were economic status and brushing behaviour (p-value <0.05).
Universitas Gadjah Mada
Fakultas Kedokteran Gigi
2020-07-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/44013
10.22146/teknosains.44013
Jurnal Teknosains; Vol 9, No 2 (2020): June; 148-158
Jurnal Teknosains; Vol 9, No 2 (2020): June; 148-158
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/44013/28132
Copyright (c) 2020 Prayudha Benni Setiawan, Regina TC. Tandelilin, Bekti Nuraini, dan Hartono
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/45051
2021-02-18T04:52:57Z
teknosains:ART
Pola perkembangan morfologi fisik kota di cekungan bandung periode 2009 – 2018
Wijaya, Ramadhan Pasca
Susilo, Bowo
Widayani, Prima
Remote Sensing
Urban Morphology; Developed Land; Pattern; Development; Remote Sensing
Land development will be occur from time to time, the developments phenomenon will have either positive or negative impact. The impact of this phenomenon will affect various aspects, such as socioeconomic, mobility, land quality, and more. So the study on land development is required to evaluate and anticipate the negative impact on some region. To do evaluating and anticipating unwanted impacts a study can be carried out to become the basis for regional development or regional planning. one of them is to examine the pattern of urban development that will be used as a reference for regional development planning that will occur in the future. This study aims to analyze the development of urban physical morphology in Bandung Basin period 2009 - 2018. The method in this research is quantitative descriptive in the form of data collecting, data processing, modelling, and mapping. The research method is quantitative and qualitative in the form of data collection, data processing, modeling and mapping. The method of applying quadrant and burgess models to find the value of built-up land density that can reflect information on the phenomenon of built-up area development seen from the built-up area density in each agreed zone with geometric and quadrant models. The results in this research shows that the morphological structure of developed land in Bandung Basin is concentric with the highest density of 0.3459 km² which is centered in Cimahi and Bandung, also development is elongated and along the road with the majority of the land development create a leapfrog pattern, so it can be concluded that urban morphology in Bandung Basin is concentric with the linear development which is leapfrog.
Universitas Gadjah Mada
Bowo Susilo, Prima Widayani, Program Pascasarjana Fakultas Geografi, Universitas Gadjah Mada
2020-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Linkage, Burgess, Quadrant
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/45051
10.22146/teknosains.45051
Jurnal Teknosains; Vol 10, No 1 (2020): December; 19-33
Jurnal Teknosains; Vol 10, No 1 (2020): December; 19-33
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/45051/30652
Copyright (c) 2020 Ramadhan Pasca Wijaya
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/46109
2021-08-05T14:02:05Z
teknosains:ART
Optimalisasi kapasitas energi angin dan matahari dengan konfigurasi mikrogrid berdasarkan karakteristik beban
Giyatno, Dhanis Woro Fittrin Selo Nur
Subekti, Lukman Bagus
Pradana, Adlan Bagus
Nurmawati, Indriana
Wibowo, Indra
teknik elektro; energi terbarukan; mikrogrid
vocational educational; microgrid; electrical energy load; solar energy; wind energy
Diploma III Electrical Technology Study Program is a institutional vocational education institutional in Department of Electrical Engineering and Informatics that aims to produce graduate who are ready to work in operation and maintenance of power system. Since phenomena of scarcity of fossil fuels, study program meet the 2 major problems, namely the limitations of electrical energy for practical lab work and increased job skills on the electrical energy conversion of electrical energy from renewable energy. The purpose of this research is to optimalize capacity of solar and wind energy contained in the environment of the laboratory on the microgrid configuration, namely PV-Wind turbine-Battery. Software HOMER is used to simulate microgrid configuration with AC-DC load, AC load, and DC load. The results show indicate that microgrid PV-Wind turbine-Battery is more economically to meet the need AC-DC load than the others.
Universitas Gadjah Mada
Direktorat Penelitian Universitas Gadjah Mada Tahun Anggaran 2018
2021-08-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/46109
10.22146/teknosains.46109
Jurnal Teknosains; Vol 10, No 2 (2021): June; 170-178
Jurnal Teknosains; Vol 10, No 2 (2021): June; 170-178
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/46109/31880
Copyright (c) 2021 Dhanis Woro Fittrin Selo Nur Giyatno
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/46548
2021-02-18T04:52:57Z
teknosains:ART
Ekspansi termal linier dan residu malam inlei gigi dengan komponen parafin Indonesia
Irnawati, Dyah
Widjijono, Widjijono
Harsini, Harsini
Dental Biomaterials
Inlay wax; Composition; Paraffin; Linear thermal expansion; Residue
Inlay wax is used for pattern of metallic inlays, crowns, and fixed partial dentures. Inlay wax must have a linear thermal expansion (LTE) and a residue that comply the standards. Inlay wax contains paraffin, carnauba, and beeswax. Paraffin and beeswax are produced in Indonesia. This study aims to examine the effect of the inlay wax compositions with paraffin and beeswax Indonesia on the LTE and residue properties. The research materials are paraffin (Pertamina, Balikpapan), beeswax (SEA, Yogyakarta), carnauba wax (Brataco Chemicals, Yogyakarta), and inlay wax (GC, Japan). Five inlay wax compositions are made with a ratio of paraffin, carnauba, and beeswax 60: 35: 5 (K-60), 65: 30: 5 (K-65), 70: 25: 5 (K-70), 75:20 : 5 (K-75), and 80: 15: 5 (K-80) (% w/w). The waxes were melted at 75 ± 5 oC then moulded for the TLE (267x6.35 x6.35 mm) and the residue (1 g) test specimens (n=4). The LTE and residue specimens were also made of paraffin, carnauba wax, beeswax, and commercial wax (n = 4). The LTE and residue tests were carried out based on ANSI/ADA specification No.4. Data were statistically analyzed by analysis of variance and LSD (α = 0.05). Anava test results showed that composition and temperature had a significant effect on LTE (p <0.05) and composition had a significant effect on residues (p <0.05). The LSD test results showed a significant difference in LTE of the K-75 group with other groups and the residues of the K-75 group and K-80 group with other groups (p <0.05). Inlay wax compositions with high paraffin concentrations have high LTE and residue. The value of LTE and residue of inlay wax with paraffin and beeswax from Indonesia are in accordance with the ANSI/ADA specification no. 4.
Universitas Gadjah Mada
2020-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/46548
10.22146/teknosains.46548
Jurnal Teknosains; Vol 10, No 1 (2020): December; 1-9
Jurnal Teknosains; Vol 10, No 1 (2020): December; 1-9
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/46548/30649
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/46548/8293
Copyright (c) 2020 Dyah Irnawati, Widjijono Widjijono, Harsini Harsini
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/46652
2019-07-24T15:34:10Z
teknosains:BR
ELECTROSPUN BIOMATERIALS AND RELATED TECHNOLOGIES
Anindyajati, Adhi
Biomedical Engineering
Electrospinning biomaterials
Electrospun Biomaterials and Related Technologies is a multi-contributed book containing review articles from worldwide authors with industry and academic background. This book is aimed to deliver a compiled overview in biomaterials electrospinning, including strategies, relevant technologies, and state-of-the-art research. The editor, Jorge Almodovar, has chemical engineering background with extensive research experiences and focus on engineering of biomimetic materials. The book consists of nine chapters in 282 content pages. Arranged in a concise format, it delivers a comprehensive but not exhaustive reading text. The chapters cover broad range of topics in electrospinning field, including process reproducibility and robustness, fibrous collagen scaffold, cellulose-based biomaterials, biopolymer nanofibres, green electrospinning, electrospun materials for cancer research, nanofibrous nerve conduits, scaffold for retinal tissue engineering, and smart material. These topics are mainly related to biomedical applications, but studies on environmental engineering are also conferred.
Universitas Gadjah Mada
2019-07-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/46652
10.22146/teknosains.46652
Jurnal Teknosains; Vol 8, No 2 (2019): June; 168-170
Jurnal Teknosains; Vol 8, No 2 (2019): June; 168-170
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/46652/25006
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/46652/8337
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/46652/8338
Copyright (c) 2019 Adhi Anindyajati
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/48082
2019-07-24T15:34:10Z
teknosains:EDT
EDITORIAL
Siswomihardjo, Widowati
Sekolah Pascasarjana Universitas Gadjah Mada mempunyai minat serta program studi yang sangat beragam. Dengan dasar keilmuan dalam bidang teknologi, agronomi, lingkungan, dan kesehatan, maka Sekolah Pascasarjana UGM menjadi tempat bagi pengembangan ilmu-ilmu multi dan lintas disiplin. Sebagai tuntutan dari pengembangan ilmu pengetahuan dan teknologi, Jurnal Teknosains terbit satu tahun – dua kali menjadi wadah untuk mempublikasikan hasil penelitian yang bersifat inovatif.
Universitas Gadjah Mada
2019-07-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/48082
10.22146/teknosains.48082
Jurnal Teknosains; Vol 8, No 2 (2019): June; i-ii
Jurnal Teknosains; Vol 8, No 2 (2019): June; i-ii
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/48082/24999
Copyright (c) 2019 Widowati Siswomihardjo
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/50908
2021-12-05T17:30:12Z
teknosains:ART
Determination of the convective heat transfer constant (c and n) in a solar still
Mugisidi, Dan
Rahman, Abdul
Heriyani, Oktarina
Gunawan, Pancatatva Hesti
Mechanical; Heat Transfer
Solar Still; Distillation; Desalination; Heat Transfer Constant; Convective Coefficient
The geometry of a solar still determines the convection constants C and n, which in turn affect the convection heat transfer coefficient’s value and mass. A method for determining the value of convection heat transfer constants C and n has already been developed by the researchers. Therefore, this study aimed to use several methods and theories to find the value of convection heat transfer constants C and n. The results are then compared with the results of the study. The solar still used in this study has one slope. To reduce variables that cannot be controlled, the data collection was conducted indoors using a halogen lamp that can be regulated as a heat source for 24 hours nonstop. The sea surface height in the solar still was maintained at a height of 20 mm, using a height regulator. Temperature was measured using a data logger set to enter data every hour. The desalinised clean water was stored in bottles placed on scales that were recorded every one hour. Room temperature was maintained in the range of 35 to 36 oC. The data in this study were used to calculate the heat transfer constants C and n to obtain the value of the convection heat transfer coefficient and mass calculation. This study compares the calculation models of Tiwari, Dunkle and Power. The following calculation model results: Tiwari model, C = 0.082 and n = 0.612; Dunkle model, C = 0.075 and n = 1/3; Power model, C = 0.815 and n = 0.611. The C and n values obtained with these four approaches reveal that the results from the Power model calculation are the closest to the actual mass, showing a percentage deviation of 1.63%.
Universitas Gadjah Mada
Office of Research and Development at Universitas Muhammadiyah Prof. Dr. Hamka
2021-12-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/50908
10.22146/teknosains.50908
Jurnal Teknosains; Vol 11, No 1 (2021): December; 1-12
Jurnal Teknosains; Vol 11, No 1 (2021): December; 1-12
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/50908/32739
Copyright (c) 2021 Dan Mugisidi, Abdul Rahman, Oktarina Heriyani, Pancatatva H Gunawan
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/51031
2021-02-18T04:52:57Z
teknosains:ART
Analisis polarimetri alos 1 palsar untuk zonasi mineral alterasi hidrotermal di kabupaten Soppeng Sulawesi Selatan
AP, Anugerah Ramadhian
Jatmiko, Retnadi Heru
Widyatmanti, Wirastuti
Geografi, Penginderaan Jauh
Hydrothermal Alteration; Multi-Polarization; Radar Imagery; Remote Sensing; Visual Interpretation
Radar technology in remote sensing can be used for a variety of mapping, such as geological mapping. Soppeng Regency, South Sulawesi has a complex geological condition characterized by structural and intrusion phenomena with old materials. The phenomenon is an indicator of hydrothermal alteration due to magma intrusion activity in the rock bedding. Radar imagery is able to identify hydrothermal alteration zones through physical approaches such as landforms, rock (lithology), and geological structures. The aim of this research to explore the ability of radar polarization to identify hydrothermal alteration parameters and distribution pattern in Soppeng Regency. The physical characteristics are obtained from visual interpretation of the ALOS-1 PALSAR multi-polarization imagery with terrain analysis approach. Sample data is needed for petrographic analysis to determine rock minerals content. Analysis of physical characteristics and petrographic analysis were used to determine the type and distribution of hydrothermal alteration zones. The result of this study are ALOS-1 PALSAR imagery can be used to produce information on landform, rocks (lithology), and geological structures with total accuracy 83,9%. The hydrothermal alteration zone in Soppeng Regency consists of argillic 221,662 km², advanced argillic 20,239 km², phyllic 94,790 km², potassic 46,678 km², propylitic 328,746 km², sub-propylitic 181,517 km², and skarn 75,635 km².
Universitas Gadjah Mada
2020-12-20
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/51031
10.22146/teknosains.51031
Jurnal Teknosains; Vol 10, No 1 (2020): December; 34-47
Jurnal Teknosains; Vol 10, No 1 (2020): December; 34-47
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/51031/30631
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/51031/9931
Copyright (c) 2020 Anugerah Ramadhian AP
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/51526
2020-02-24T07:59:22Z
teknosains:ART
Pengaruh Desain Stent pada Jumlah Limfosit dan Trombosit Kelinci (Oryctolagus Cuniculus)
Siswomihardjo, Widowati
Widyasrini, Dyah Anindya
Arifianto, Dinar
Budhi, Setyo
Taufiq, Nahar
stent design; biomaterial; in vivo study
stent; design; lymphocytes; platelets; inflammation
Percutaneous Coronary Intervention (PCI) is an effective treatment for coronary artery diseases. For the procedure, a stent is put in the coronary arteries. There are a variety of stent materials and designs available on the market. The development of stents continues with the goal to reduce the risk of failure. The design and the ability of the stent as a vascular scaffold are important factors for the success of the stent. The implantation of a stent as a foreign body can lead to inflammation. In general, the inflammation is characterized by an increased number of lymphocytes. Then, platelets play a role in coordinating the occurrence of inflammation and immune response. This study aims to determine the effect of stent design on the number of lymphocytes and platelets as a marker of inflammation. The study was conducted on ten rabbits divided into two treatment groups, namely KP1 (new design stent) and KP2 (commercial stent) by placing a stent on the iliac artery. One hour before stenting, 2 ml of blood was collected in all experimental animals. Then, 2 ml of blood was collected again on the 7th and 28th day after stenting. Data was collected based on the number of lymphocytes and platelets from all experimental animals. Statistical analysis using two-way ANOVA shows no significant difference (p> 0.05) on the number of lymphocytes and platelets between the two groups with different stent designs. It can be concluded that the design of a stent does not show a tendency to cause inflammation.
Universitas Gadjah Mada
Kementerian Riset Teknologi dan Pendidikan Tinggi
2019-11-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/51526
10.22146/teknosains.51526
Jurnal Teknosains; Vol 9, No 1 (2019): December; 21-28
Jurnal Teknosains; Vol 9, No 1 (2019): December; 21-28
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/51526/27048
Copyright (c) 2019 Widowati Siswomihardjo, dkk.
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/52051
2022-05-10T03:28:27Z
teknosains:ART
Pengaruh penambahan kacang hijau (Vigna radiata (l.) R. Wilczek) pada fermentasi susu oleh lactococcus lactis nbrc 12007
Widawati, Raras Ahlul
Retnaningrum, Endah
Microbiology
α-galactooligosaccharide; Antibacterial; Lactococcus lactis; Protein; Starter
The high content of α-galactooligosaccharide in mung beans has the potential for supporting the growth of Lactic Acid Bacteria (LAB), therefore it can be developed as fermented plant-based milk that substituted Ultra High Temperature (UHT) milk. The purposes of this research is to investigate the effectiveness of LAB Lactococcus lactis NBRC 12007 in the fermentation process of mung bean milk and to observe the quality differences of fermented mung bean milk with UHT milk. Previously, preparations were made for starter L. lactis NBRC 12007 in MRSB medium and then sub cultured to UHT milk. Furthermore, 3% of the culture was inoculated into each of the mung bean milk substrate and UHT milk as a starter for the fermentation process and incubated for 24 hours at 37oC. During this process, the effectiveness of LAB was tested (total cell, total acid, total protein, pH, antibacterial) and the quality test of fermented products (organoleptic and physical). Based on total cells, total acid, total protein, pH, and antibacterial test findings, fermented mung bean milk products had a higher value than UHT milk products. During the process, it was proven that L. lactis NBRC 12007 had high effectiveness in producing and improving the quality of fermented mung bean milk compared to UHT milk. It is assumed that the content of oligosaccharides supports the growth of LAB and the fermentation process.
Universitas Gadjah Mada
Biologi Faculty, UGM
2022-05-09
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/52051
10.22146/teknosains.52051
Jurnal Teknosains; Vol 11, No 2 (2022): June; 154-161
Jurnal Teknosains; Vol 11, No 2 (2022): June; 154-161
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/52051/33725
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/52051/10246
Copyright (c) 2022 Raras Ahlul Widawati, Endah Retnaningrum
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/53452
2021-08-05T14:02:05Z
teknosains:ART
Pengaruh koreksi atenuasi radar cuaca terhadap perhitungan estimasi curah hujan di Jawa Timur
Kosasih, Ahmad
Hartono, Hartono
Jatmiko, Retnadi Heru
Geography, Remote Sensing
Remote sensing; Weather radar; Attenuation; Rainfall; Reflectivity
Rainfall estimation using band C weather radar creates uncertainty in the results of its estimation accuracy. The cause is meteorological and non-meteorological disturbances that affect the reflectivity raw data (dBz), one of which is attenuation due to rain, especially with heavy and very heavy intensity. This study aims to evaluate the attenuation correction ability of the reflectivity raw data generated by the weather radar against the calculation of rainfall estimates at the Juanda Sidoarjo Meteorological Station, as well as the best attenuation correction coefficient to be applied in the processing of rainfall estimates by weather radar. The method used to perform attenuation correction is Z-based attenuation correction (ZATC). The calculation of attenuation correction using the ZATC method uses several α and β coefficients while the Z-R relation (Z = 200R1.6) is used to calculate the estimated rainfall before and after attenuation correction. The results showed that the attenuation correction of the C band weather radar reflectivity raw data was able to provide an increase in the accuracy of rainfall estimation where in the estimation of rainfall from a weather radar without the attenuation correction stage of the raw data, an accuracy value of 70.8% was obtained, while applying the attenuation correction using several The α and β coefficients obtained an increase in the accuracy of rainfall estimation between 72.5% to 86.9%. The best α and β coefficients for attenuation correction of weather radar reflectivity (dBz) can be applied in obtaining a more accurate rainfall estimate, namely the α and β coefficients according to Krämer and Verworn which are able to provide an increase in the accuracy of rainfall estimation by 16.1%.
Universitas Gadjah Mada
Universitas Gadjah Mada
2021-08-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/53452
10.22146/teknosains.53452
Jurnal Teknosains; Vol 10, No 2 (2021): June; 111-124
Jurnal Teknosains; Vol 10, No 2 (2021): June; 111-124
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/53452/31883
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/53452/10819
Copyright (c) 2021 Ahmad Kosasih
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/54003
2021-08-05T14:02:05Z
teknosains:ART
Identifikasi sebaran kerentanan kekeringan pertanian menggunakan analytical hierarchy process (ahp) di kabupaten Temanggung
Maulana, Ikaf Fajar
Sudaryatno, Sudaryatno
Jatmiko, Retnadi Heru
Geografi; Penginderaan jauh
Agricultural drought; Remote sensing; Geographic information system (GIS); Disaster mitigation; Analytical hierarchy process (AHP)
The decreased rainfall in Indonesia is mainly influenced by the east monsoon so air pressure from the southern hemisphere which is dry will flow through Indonesia. In a relatively long time, this may cause drought condition on agricultural land in Indonesia in general and in Temanggung Regency in particular. In addition, ENSO (El Nino Southern Oscillation) contributed to the decreased rainfall in Indonesia. This phenomenon will be more intensive and extreme with the existence of global warming. The identification of vulnerability of agricultural drought is an effort to mitigate disasters. This study aims to determine the distribution of agricultural drought and determine the factors that influence agricultural drought in Temangung Regency. The research method used the Analytical Hierarchy Process (AHP) to build a model of agricultural drought vulnerability by considering several factors. The results showed that the area of agricultural land which is vulnerable and very vulnerable to drought is 86,2 km2 and 74,14 km2, while agricultural land with moderate vulnerability is 208,21 km2, and agricultural land which is not vulnerable and very not vulnerable to drought is 128,15 km2 and 267,33 km2. The main factor as a determinant of agricultural drought in Temanggung Regency is rainfall. Meanwhile, the next factor is the respective land cover and soil texture. This research concludes that the effect of slope is not a big impact on agricultural drought in Temanggung Regency.
Universitas Gadjah Mada
Pemerintah Daerah Kabupaten Temanggung
BMKG Semarang
PUPR Kabupaten Temanggung
BAKESBANGPOL Kabupaten Temanggung
BPBD Kabupaten Temanggung, BPTP Provinsi D.I Yogyakarta
2021-08-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/54003
10.22146/teknosains.54003
Jurnal Teknosains; Vol 10, No 2 (2021): June; 125-140
Jurnal Teknosains; Vol 10, No 2 (2021): June; 125-140
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/54003/31876
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/54003/11070
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/54003/12081
Copyright (c) 2021 Ikaf Fajar Maulana
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/54335
2021-02-18T04:51:58Z
teknosains:EDT
EDITORIAL
Siswomihardjo, Widowati
Sekolah Pascasarjana Universitas Gadjah Mada mempunyai berbagai program studi yang berbasis keilmuan dalam bidang teknologi, agronomi serta kesehatan. Hal tersebut menjadikan Sekolah Pascasarjana UGM sebagai salah satu tempat untuk berkembangnya ilmu-ilmu lintas disiplin. Keragaman program studi menjadi bukti bahwa Sekolah Pascasarjana UGM menunjukkan kepeduliannya terhadap permasalahan dalam kehidupan manusia yang serasa tidak pernah ada habisnya. Harapannya semoga hasil penelitian yang ditampilkan melalui penerbitan ini dapat memberikan kontribusi akademik serta solusi terhadap permasalahan dalam kehidupan. Sesungguhnya untuk setiap penerbitan, tim redaksi selalu berusaha keras untuk meningkatkan mutu serta kualitas penerbitannya. Walaupun tidak dapat dipungkiri bahwa pada penerbitan ini tentu juga masih ada kekurangannya. Ucapan terima kasih yang tidak terhingga kepada semua pihak yang telah meluangkan waktu, tenaga serta pemikiran untuk ikut terlibat dalam penerbitan ini. Akhir kata selamat membaca, semoga bermanfaat bagi pengembangan ilmu pengetahuan serta memperluas wawasan akademik
Universitas Gadjah Mada
2019-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/54335
10.22146/teknosains.54335
Jurnal Teknosains; Vol 9, No 1 (2019): December; i-ii
Jurnal Teknosains; Vol 9, No 1 (2019): December; i-ii
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/54335/27071
Copyright (c) 2019 Widowati Siswomihardjo
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/54519
2020-07-13T04:50:21Z
teknosains:ART
Strut Linker Geometry Improving Mechanical Behaviorof Coronary Stent
Sriwijaya, Rachmat
Mayasari, Dita Ayu
Sunarintyas, Siti
mechanics of materials
Stent; Atherosclerosis; Strut linker; Recoil
Stent is one of the common solution that is offered to the patient with atherosclerosis. An ideal stent should have good mechanical and biological properties. This research aims to analyze how importance strut linker geometry affect mechanical behavior of stent especially on recoil percentage, foreshortening percentage and fatigue safety factor prediction using finite element analysis. The result showed that strut linker geometry would specify the mechanical behavior
Universitas Gadjah Mada
2020-07-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/54519
10.22146/teknosains.54519
Jurnal Teknosains; Vol 9, No 2 (2020): June; 159-164
Jurnal Teknosains; Vol 9, No 2 (2020): June; 159-164
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/54519/28134
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/54519/11403
Copyright (c) 2020 Rachmat Sriwijaya, Dita Ayu Mayasari, Siti Sunarintyas
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/55560
2023-12-10T14:34:46Z
teknosains:ART
Kajian kualitas air dan strategi pengelolaan Rawa Jombor, Klaten, Jawa Tengah
Rina, Timotius Ragga
Purnama, Setyawan
Nugroho, Andhika Puspito
Water quality; Water pollution; Aquatic environment; Management strategy
Rawa Jombor is a semiartificial reservoir whose contruction are works for serving the needs of irrigation in the dry season and as a floading control in the rainy season. Rawa Jombor also used for fish farming and floating restaurant by the community. The existence of the cages and floating restaurant can have a negative impact to the aquatic environment due to the disposal of waste and leftover food and metabolism that is deposited at the bottom of the water. This study aims to analyze the water quality, pollution levels and to develop a management strategy of Rawa Jombor. Water quality is measured at 9 sampling point determined by purposive sampling based on the use of Rawa Jombor. Pollution level is analized uses pollution index and the management strategy uses analytical Herarchy Process. The results show that Rawa Jombor has decreased water quality marked by several parameters that do not meet the class III of water quality standards according to Government Regulation No. 82 of 2001. Rawa Jombor is included in the category of mildly polluted in areas without activity, floating restaurant and fish cage for water allotment class I, II, III and IV with an average pollution index ranging from 1,02 to 2,886. To maintain the continuity of the Rawa Jombor, a management strategy with priority on the economic aspects is needed with the development of the Rawa Jombor for sustainable fisheries.
Universitas Gadjah Mada
2023-12-10
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/55560
10.22146/teknosains.55560
Jurnal Teknosains; Vol 13, No 1 (2023): December; 31-45
Jurnal Teknosains; Vol 13, No 1 (2023): December; 31-45
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/55560/38053
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/55560/11785
Copyright (c) 2023 Timotius Ragga Rina, Setyawan Purnama, Andhika Puspito Nugroho
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/55847
2022-05-09T05:42:32Z
teknosains:ART
Jejak karbon pada tahap operasional agro-eduwisata kota mataram menggunakan pendekatan penilaian daur hidup
Adiansyah, Joni Safaat
Carbon footprint; Life cycle assessment; Climate change; Agro-edutourism; Sustainable development
Climate change is one of the global issues that require the participation of all stakeholders for handling. In addition, the climate change issue is listed as one of the sustainable development goals (SDGs). The Government of Mataram city, as one of the stakeholders, has committed to involve the climate change consideration into its planned program, including the development of agro-edutourism facility. This study aims to calculate a carbon footprint of agroedutourism facility during the operational stage in order to implement the Greenhouse Gas (GHG) emission reduction strategy. The method used is a life cycle assessment approach with ReCiPe analysis, and the functional unit is an annual carbon footprint per m2 area of agro-edutourism. The study showed that the total carbon footprint per m2 was 2.88 KgCO2-e per annum with the primary environmental hotspot was fossil fuel utilization in energy source of agro-edutourism facility (Electricity State-own Company) and visitor vehicles. Therefore, some strategies could be applied for reducing the carbon footprint, such as increasing the utilization percentage of renewable energy (solar panel), using energy-saving bulbs, preparing the facilities for zero-emission vehicles, and applying the green building concept or design. Further research is required to assess the energy management concept from the technical feasibility aspect and economic aspect for complimenting this study.
Universitas Gadjah Mada
2022-05-09
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/55847
10.22146/teknosains.55847
Jurnal Teknosains; Vol 11, No 2 (2022): June; 91-100
Jurnal Teknosains; Vol 11, No 2 (2022): June; 91-100
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/55847/33710
Copyright (c) 2022 Joni Safaat Adiansyah
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/56078
2021-12-05T17:30:12Z
teknosains:ART
Analysis of ceiling type to produce energy efficient residential buildings: case study on housing design of puskim pu-bandung city
Ayuningtyas, Nurina Vidya
Adianti, Istiana
Suryabrata, Jatmika Adi
Drop Ceiling; Vaulted Ceiling; Green Architecture; Energy-Saving Architecture; Thermal Comfort
Many houses that exist on this earth. Therefore, it is necessary to have tactical and intelligent thinking in designing a home. Many things are rarely considered related to the effects of the design of building elements when related to the temperature or the energy produced. Existing background regarding efforts to reach a comfortable temperature can not only be solved in terms of mechanical systems, but the architectural approach can help and provide a comfortable effect for its inhabitants. This research was conducted to determine the level of thermal comfort or temperature in the room of a residential design that would be related to the size of energy consumption by applying several alternative designs or ceiling forms. This type of research is research using simulation methods through a computer model. The results showed the use of ceiling type Vaulted Ceiling was able to increase the Surface Inside Temperature value by 3 ° C when compared to the type of drop ceiling. The Mean Radiant Temperature value when using the ceiling vault type rises 0.6 ° C and on the acquisition of Operative, Temperature rises 0.3 ° C. The use of insulation material on the roof can significantly reduce Mean Radiant Temperature and Operative Temperature at 1.7 ° C at Mean Radiant Temperature and 0.8 ° C at Operative Temperature. Seeing the results of the simulation in this study, the recommended ceiling type is to use the drop ceiling type because it is quite capable of keeping the temperature in the room not too high so that thermal comfort can be achieved. However, if you want to apply a ceiling design with a model or type of drop ceiling, it is better to use additional insulation material so that the heat transmission temperature is not too high in the room.
Universitas Gadjah Mada
Universitas Widya Mataram
2021-12-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/56078
10.22146/teknosains.56078
Jurnal Teknosains; Vol 11, No 1 (2021): December; 36-42
Jurnal Teknosains; Vol 11, No 1 (2021): December; 36-42
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/56078/32742
Copyright (c) 2021 Nurina Vidya Ayuningtyas, Istiana Adianti, Jatmika Adi Suryabrata
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/56079
2021-12-05T17:30:12Z
teknosains:ART
Urban tourism space based on bike-sharing tourist in Yogyakarta city
Wiyoso, Danar
Pramitasari, Diananta
Tourism Space; Urban Tourism; Characteristic; Bike-sharing; Tourist
This paper identifies the urban tourism space in a complex way as chosen by the bike-sharing tourists in Yogyakarta. The space is defined as not only the tourist attraction object which has become a common attraction but also the elements of urban architecture such as landmarks, districts, paths, edges, and nodes that becoming lanes, stop points, and the destination for the tourist when cycling around using bike-sharing. The data collecting used in this research is person-cantered mapping by following the bike-sharing tourists’ movement and giving questionnaires to find out the tourists’ motivation in using bike-sharing for tourism. The hypothesis shows that the tourists would prefer to choose the common attraction as an urban tourism space in Yogyakarta. But by cycling, the tourists will be able to seek a new experience because they can be more flexible in exploring the space with uniqueness which has the shape of urban architecture elements. The research results showed that landmarks and paths were the two urban architecture elements that gave strong characteristics toward urban tourism space, as preferred by the bike-sharing tourists in Yogyakarta. The tourist attraction with both characteristics was located around the city centre. It indicated that the distribution of visits is still centrally located close to the bike shelters. So that the tourists could go to the other unique destinations in Yogyakarta, thus the researcher recommends that the bike shelters need to be evenly spread approaching the tourism attractions and amenities.
Universitas Gadjah Mada
2021-12-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/56079
10.22146/teknosains.56079
Jurnal Teknosains; Vol 11, No 1 (2021): December; 76-94
Jurnal Teknosains; Vol 11, No 1 (2021): December; 76-94
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/56079/32746
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/56079/18029
Copyright (c) 2021 Danar Wiyoso, Diananta Pramitasari
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/57747
2020-07-13T04:50:21Z
teknosains:EDT
EDITORIAL
Siswomihardjo, Widowati
Sekolah Pascasarjana Universitas Gadjah Mada (UGM) mempunyai minat serta program studi yang sangat beragam. Dengan dasar keilmuan dalam bidang teknologi, agronomi, lingkungan dan kesehatan, Sekolah Pascasarjana UGM menjadi tempat bagi pengembangan ilmu multi dan lintas disiplin. Pada April 2020 telah dibuka sebuah program studi baru, yaitu Teknik Biomedis. Sebuah program studi yang menyelesaikan permasalahan medis berdasarkan pada kajian ilmu engineering. Kehadiran program studi baru, dapat menjadi bukti bahwa Sekolah Pascasarjana terus mengembangkan diri untuk memenuhi kebutuhan keilmuan untuk menyelesaikan permasalahan di dalam kehidupan manusia. Walaupun kondisi pandemi covid-19 tengah melanda semua negara, tetapi ternyata tidak menyurutkan perhatian para peneliti untuk mempublikasikan hasil penelitiannya. Hal tersebut dibuktikan dengan banyaknya artikel masuk ke tim redaksi. Secara konsisten dan profesional tim redaksi telah memilih serta melakukan penyuntingan terhadap delapan artikel yang dipublikasi dengan sistem blind review dalam penerbitan ini. Adapun penyuntingan artikel telah melibatkan mereka yang ahli di dalam bidangnya, tidak hanya yang berasal dari dalam negeri saja, tetapi dari luar negeri juga. Tim redaksi terus berupaya untuk melakukan penyempurnaan untuk setiap penerbitan baru. Akan tetapi, mohon maaf apabila masih terdapat kekurangan dalam penerbitan ini. Terima kasih yang tidak terhingga kepada semua pihak yang telah meluangkan waktu serta tenaga dalam proses penerbitan ini. Selamat membaca, semoga bermanfaat bagi pengembangan ilmu pengetahuan serta wawasan akademik kita semua.
Universitas Gadjah Mada
2020-07-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/57747
10.22146/teknosains.57747
Jurnal Teknosains; Vol 9, No 2 (2020): June; ii-ii
Jurnal Teknosains; Vol 9, No 2 (2020): June; ii-ii
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/57747/31818
Copyright (c) 2020 Widowati Siswomihardjo
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/59115
2021-12-05T17:30:12Z
teknosains:ART
Strategi pengelolaan pariwisata berkelanjutan di kawasan wisata alam sumber maron, kabupaten Malang
Putri, Agnes Caesarika Githanto
Muhamad, Muhamad
Fandeli, Cafid
Management Strategy; Sustainable Touris; Nature Tourism
Wisata Alam Sumber Maron is a tourist destination in Malang Regency which is currently experiencing a surge in tourists. In addition, there are problems with the conversion of land from plantations to developed land. Both of these problems have an impact on the quality of the environment in Wisata Alam Sumber Maron, causing the tourist destination area to be unsustainable. The purpose of this research is to analyze the management strategies that can be applied in Wisata Alam Sumber Maron. The data analysis used is an analysis of the carrying capacity of the environment to determine its physical factors, stakeholder analysis to determine social factors and analysis of travel costs to determine economic factors. Based on the method used, the final result is ha the effective carrying capacity at the Wisata Alam Sumber Maron is 179 people/day. This figure is then used as a guideline for strategy formulation.The management strategy is formulated using the 4 pillars of tourism method as stated in the Undang-Undang Number 10 of 2009 about Kepariwisataan, namely the tourism industry, destinations, marketing, and tourism institutions.
Universitas Gadjah Mada
2021-12-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/59115
10.22146/teknosains.59115
Jurnal Teknosains; Vol 11, No 1 (2021): December; 51-65
Jurnal Teknosains; Vol 11, No 1 (2021): December; 51-65
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/59115/32771
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/59115/13111
Copyright (c) 2021 Agnes Caesarika Githanto Putri, Muhamad, Chafid Fandeli
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/60797
2021-12-05T17:30:12Z
teknosains:ART
The pattern of lingga village based on history
Idaman, Berkat
Silitonga, Shanty
Qin, Yulianto
Modeling; Traditional House; Lingga Village
Lingga Village is a tourist village that is well known as a traditional Karo tourism village and has become a major tourism destination in North Sumatra Province. This village still has a legacy of traditional Karo architecture. In ancient times this Lingga village had 80 units of traditional houses. During holidays, tourists visiting this village can reach as many as 300 people from within the country and from abroad. Currently in Lingga Village there are only two units of the Karo Traditional House. The purpose of this research is to model the village pattern of Lingga village based on interview about village’s history. The formulation of the problem that is the focus of this research are; how was the pattern of the villages, how was the orientation of the Karo Traditional House in Lingga Village in the past, how was the circulation of Lingga Village villages in the past. The research method used in this study is the simulation by modeling method. The primary data collection consisted of observing, documenting, and conducting interviews with informants from Lingga Village. Secondary data collection consists of books and journals about Lingga Village. The final result of this research is the model of the pattern of Lingga village based on history. The model focuses on house orientation, circulation patterns and types of traditional houses in Lingga village.
Universitas Gadjah Mada
2021-12-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/60797
10.22146/teknosains.60797
Jurnal Teknosains; Vol 11, No 1 (2021): December; 26-35
Jurnal Teknosains; Vol 11, No 1 (2021): December; 26-35
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/60797/32741
Copyright (c) 2021 Berkat Idaman, Shanty Silitonga, Yulianto Qin
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/60798
2021-12-05T17:30:12Z
teknosains:ART
The utilization of village-information system for integrated social welfare data management: actor-network theory approach in Gunungkidul regency
Wijoyono, Elanto
Information System; Poverty; Social Welfare; Village
As the main reference to poverty alleviation in Indonesia, the policy of integrated welfare data management by the Ministry of Social Affairs still contains many inaccuracies. This has an impact on beneficiary groups as the target of the implementation of national programs on poverty reduction. This study shows how Integrated Social Welfare Data management by the local government in Gunungkidul Regency, Special Region of Yogyakarta, can solve the inaccuracy. The analysis was conducted with qualitative methods, based on actor-network theory. Data collection, verification, and validation are processed by integrating Village Information System (SID BERDAYA) and Regency Information System (SIKAB) in Gunungkidul at the local level, with the Social Welfare Information System - Next Generation (SIKS-NG) by the Ministry of Social Affairs in national level. This integration is needed to improve the quality of data accuracy and validity. Strengthening the participation and transparency of social interaction between government agencies at every level (from the village level to the national level) and the community people are important since communities are the beneficiaries. These processes will develop a reflective scheme, to make sure the quality of planning and development program on poverty alleviation is running with accurate and valid data.
Universitas Gadjah Mada
2021-12-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/60798
10.22146/teknosains.60798
Jurnal Teknosains; Vol 11, No 1 (2021): December; 13-25
Jurnal Teknosains; Vol 11, No 1 (2021): December; 13-25
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/60798/32740
Copyright (c) 2021 Elanto Wijoyono
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/61136
2022-05-09T05:42:34Z
teknosains:ART
Structural performance of 1 way and 2 way setback with the soft first story using ddbd
Rosyidah, Anis
Luthfiyanti, Indriyana
Civil Engineering
DDBD; Setback; Soft First Story; Without Setback
Irregular building structures increasingly varied, such as setback buildings and buildings with soft level stiffness irregularity on the first floor of the building (soft first story). High-rise buildings are at risk of collapse due to earthquakes. Designing efficiency requires a Direct Displacement Based Design (DDBD) method. In this study, the DDBD method uses pushover analysis on soft first-story buildings without a setback,1-way setback, and 2-way setback. This study aims to obtain the value software's value of displacement, story drift, ductility, plastic hinge response, and performance levels study indicates that the displacement value of the soft first-story building without setback is smaller than the setback building. In addition, the value of displacement and story drift in the setback building with a soft first story is influenced by the small setback area ratio. The highest displacement and story drift values in the X direction are 1-way setback buildings, which are 0.422 m and 0.0147 m, while in the Y-direction, the 2-way setback buildings are 0.44 m and 0.0167 m. The most significant value of actual ductility is a building without setbacks with a soft first-story. The plastic hinge response in all three buildings shows a strong column weak beam. The level of structural performance in all three buildings is at the level of Immediate Occupancy, where the value of the performance level of the FEMA 356 method is greater than the ATC 40 method.
Universitas Gadjah Mada
UP2M PNJ
2022-05-09
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/61136
10.22146/teknosains.61136
Jurnal Teknosains; Vol 11, No 2 (2022): June; 141-153
Jurnal Teknosains; Vol 11, No 2 (2022): June; 141-153
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/61136/33714
Copyright (c) 2022 Anis Rosyidah, Indriyana Luthfiyanti
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/61225
2022-05-09T05:42:36Z
teknosains:ART
Faktor yang berhubungan dengan kepatuhan berobat penderita tuberkulosis paru di kota Sorong
Depo, Meliana
Pademme, Dirgantari
Kesehatan Masyarakat, Keperawatan
pulmonary tuberculosis; medication adherence; anti-tuberculosis drugs
Tuberculosis is still a major burden of disease in Indonesia. The disease is highly transmissible, and if it is resistant to drugs, treatment can be take a long time. Patients with pulmonary tuberculosis will be difficult to cure if there is no regular treatment. This study aims to identify factors related to patient adherence to tuberculosis treatment in Sorong City. The study uses a cross-sectional design with 72 respondents. Data collection through interviews with a structured questionnaire. Samples were pulmonary tuberculosis patients recorded as having followed treatment for at least two months from 2018 to 2019 at RSUD Sorong. Data were analysed using the Chi-square test. The results showed that 55.6% of respondents adhered to treatment for pulmonary tuberculosis. The variables associated with adherence in patients with pulmonary tuberculosis in Sorong City were drug side effects (p-value = 0.013) and the support of the supervisor taking medication (p-value = 0.000). In order to improve adherence to tuberculosis treatment, health workers should create a tracking system for patients who are non-compliant and expand case management’s capacity to advise patients.
Universitas Gadjah Mada
2022-05-09
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/61225
10.22146/teknosains.61225
Jurnal Teknosains; Vol 11, No 2 (2022): June; 174-183
Jurnal Teknosains; Vol 11, No 2 (2022): June; 174-183
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/61225/33718
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/61225/14098
Copyright (c) 2022 Meliana Depo, Dirgantari Pademme
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/61271
2022-05-09T05:42:33Z
teknosains:ART
Efektivitas sistem gabungan penukar kalor-udara tanah dengan kolektor surya untuk pendinginan ruangan di kota Medan
Sitorus, Tulus Burhanuddin
Abda, Syahrul
Mechanical Engineering; Energy Conversion
EAHE; solar collector; cooling system; save energy; effectiveness
Energy is one of the main things in a country's economic growth, but saving energy is one of the main challenges in the world today. In developing countries such as Indonesia, the energy sector is considered a crucial sector, because consumption demand increases compared to production. Therefore, to reduce energy consumption it is necessary to save energy. Earth-air heat exchanger cooling systems are one of them. The research objective was to determine the effectiveness performance of the EAHE system on changes in room temperature according to weather conditions in Medan city. The implication of this research is to reduce the consumption of electricity or fuel oil and environmental pollution. The test room has dimensions of 200 cm x 200 cm x 200 cm. Testing using a flat plate type solar collector to help the process of air movement by taking advantage of differences in air temperature. The testing process starts at 08.00 WIB to 17.00 WIB for nine hours everyday. The measurement results show that various weather conditions include radiation intensity, ambient temperature and humidity. During the test, the radiation intensity ranged from 38.10-892.12 W/m2, the variation in ambient temperature from 24.65-35.29oC and the average air humidity 68.93%. The experimental data showed that the fluctuation of indoor air temperature ranged from 23.01 to 31.84oC and the average room temperature 27.83oC. This study resulted in an average effectiveness value of the EAHE system of 51.49%. According to the result of the statistical studies, the weather conditionsthe effectiveness of the EAHE system by51,56%.
Universitas Gadjah Mada
DRPM DIKTI
2022-05-09
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/61271
10.22146/teknosains.61271
Jurnal Teknosains; Vol 11, No 2 (2022): June; 128-140
Jurnal Teknosains; Vol 11, No 2 (2022): June; 128-140
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/61271/33713
Copyright (c) 2022 Tulus Burhanuddin Sitorus, Syahrul Abda
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/62656
2021-08-05T14:02:05Z
teknosains:ART
Analisis pengaruh tebal plat terhadap karakteristik mekanik pegas daun pada prototipe mobil fish car unej (fcu) mudskip
Rohman, Khoirur
Qoryah, Rika Dwi Hidayatul
Muttaqin, Aris Zainul
Mulyadi, Santoso
Teknik Mesin
leaf spring; stress; strain; cycle
Fish Car Unej (FCU) Mudskip is a car designed with a rural terrain system, especially for fishing transportation. FCU Mudskip uses leaf spring suspension at the rear to support the weight of the vehicle, that is leaning towards the rear. The load of the vehicle is inclined to the rear due to the car carrying system in the form of fish and water. This conveying system can cause leaf spring failure. Therefore, this study aims to determine the value of stress, strain and cycle on leaf springs. Ansys 18.1 software was used to obtain stress, strain, and leaf spring cycle values with a thickness of 7 mm, 10 mm, and 13 mm. The value of stress on leaf springs with thickness 7 is 124,31 x 106 N/m2; thickness 10 mm is 74,92 x 106 N/m2; thickness 13 mm is 48,08 x 106N/m2; the value of strain on leaf springs with a thickness of 7 mm is 0,00075; a thickness of 10 mm is 0,00045; a thickness of 13 mm is 0,00029; Acceptable cycles of leaf springs are 7 mm thick is 69206 cycles, 10 mm is 77833 cycles, and 13 mm thick is 93054 cycles. Leaf springs with a thickness of 13 mm are the most optimal leaf springs because they can receive the most cycles of 93054 cycles, according to the function of leaf springs as vibration dampers.
Universitas Gadjah Mada
2021-08-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/62656
10.22146/teknosains.62656
Jurnal Teknosains; Vol 10, No 2 (2021): June; 141-151
Jurnal Teknosains; Vol 10, No 2 (2021): June; 141-151
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/62656/31877
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/62656/14742
Copyright (c) 2021 Khoirur Rohman
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/63229
2022-05-09T05:42:32Z
teknosains:ART
Proses difusi relativistik melalui persamaan langevin dan fokker-planck
Romadani, Arista
Rosyid, Muhammad Farchani
Brownian; relativity; Langevin; Fokker-Planck; diffusion
Brownian motion theory is always challenging how to describe diffusion phenomena with the main issue is how to extend the classical theory of Brownian motion to the special relativity framework. In this study, we formulated dynamics and distribution of a Brownian particle in relativistic framework by using Langevin and Fokker-Planck equation. By representing Brownian particle dynamics by Langevin equation, the velocity curves were dependent on the presence of viscous friction coefficient (heat bath), and were used generalized in special relativity theory, A relativistic Langevin equation reduces to the classical theory at low velocities. Likewise, the distribution of Brownian particles is represented as a stationary solution of the relativistic Fokker-Planck equation. From numerical results, we found that the probability density in the relativistic Fokker-Planck equation for was reduced to the standard Fokker-Planck equation in Netownian classical theory. For the calculation result showed that the Hanggi-Klimontovich approach has a consistent result to the relativistic Maxwell distribution. This work could open a promising interpretation to formulate the diffusion phenomena into general relativity theory.
Universitas Gadjah Mada
2022-05-09
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/63229
10.22146/teknosains.63229
Jurnal Teknosains; Vol 11, No 2 (2022): June; 101-111
Jurnal Teknosains; Vol 11, No 2 (2022): June; 101-111
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/63229/33711
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/63229/15051
Copyright (c) 2022 Arista Romadani, Muhammad Farchani Rosyid
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/63295
2021-08-05T14:02:05Z
teknosains:ART
Typology of resilience strategies for natural disasters in Yogyakarta city
Krisnantara, Guruh
Roychansyah, M. Sani
Urban Planning; Disaster Mitigation
resilience; natural disasters; Yogyakarta; Kampung Tangguh Bencana; typology
Urban areas in disaster prone require increased capacity in order to reduce the risk level. This study identifies resilience strategies in towards natural disasters in the village unit to obtain detailed data. This study uses field observations to find information about resilience strategies that have been carried out by the government and by the public in general and with snowball sampling techniques in each unit of analysis. Some strategies obtained were then made a typology of strategies found in several villages in the city of Yogyakarta. The results of this study are there are two types of strategies for increasing resilience in Yogyakarta, bottom-up strategy and top-down strategy. Bottom-up strategy is a strategy that was indeed initiated and carried out by the village although in the end it still cannot be separated from the role of main stakeholders, among others, is conducting disaster simulations, training in the use of emergency equipment, disaster socialization, planning, and infrastructure preparation. Top-down strategy is a strategy or policy carried out by the regional government in order to coordinate the level of resilience in the entire region of Yogyakarta, including the addition of the Kampung Tangguh Bencana (KTB), village expansion, organizing volunteers, and infrastructure development.
Universitas Gadjah Mada
2021-08-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/63295
10.22146/teknosains.63295
Jurnal Teknosains; Vol 10, No 2 (2021): June; 152-159
Jurnal Teknosains; Vol 10, No 2 (2021): June; 152-159
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/63295/31878
Copyright (c) 2021 Guruh Krisnantara
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/63801
2021-08-05T14:02:05Z
teknosains:ART
Possibility study of implementing vertical constructed wetland for domestic waste water treatment in urban kampong
Sutanto, Haryati
Bawole, Paulus
Biotechnology - Waste Water Treatment
Kampong; Vertical Constructed Wetland; Urban; Treatment
The Indonesian Ministry of Environment in 2014 released study results that 60-70% of rivers in Indonesia have been polluted by domestic wastewater, which is not treated properly. Improper and inadequate wastewater treatment not only pollutes water resources and damages ecosystems, but can also pose a significant public health risk. The development of spontaneous settlements in urban kampong makes the environmental quality within the settlements getting worse and many people consider that the area of urban kampong is not habitable. The efforts to treat wastewater before being discharged into water bodies are very important. The study of "vertical constructed wetland" model using water plants which are also ornamental plants can be considered as an alternative system for household wastewater treatment in kampong settlements. The objective of the research is to develop an alternative model of wastewater treatment that can overcome the obstacles of implementing a wastewater treatment system in terms of cost and availability land. The result shows that the removal efficiency of BOD, phosphate and total coliform are 71.64%, 50,92% and 99.67% respectively. Since the research is still being conducted on a laboratory scale, the further study must be developed with real case studies in low income community settlements in Kampung Kota. Additionally this research can give suggestions to local government an alternative policy to implement domestic waste water treatment plan in a densely populated settlement along the riverbank in the city.
Universitas Gadjah Mada
The Faculty of Biotechnology - Duta Wacana Christian University
2021-08-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/63801
10.22146/teknosains.63801
Jurnal Teknosains; Vol 10, No 2 (2021): June; 179-187
Jurnal Teknosains; Vol 10, No 2 (2021): June; 179-187
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/63801/31881
Copyright (c) 2021 Haryati Sutanto
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/63878
2022-05-09T05:42:35Z
teknosains:ART
Akurasi dimensi produk filamen 3d printing berbahan polipropilen menggunakan mesin ekstrusi
Ramadhan, Mochamad Edoward
Darsin, Mahros
Akbar, Sains Ilham
Yudistiro, Danang
Mechanical Engineering, Manufacturing Technology, Material Sciences
Dimensional accuracy; FDM 3D printing; Filament design; Taguchi
Additive manufacturing (AM) has been trending topic in industrial revolution 4.0. One technique and the most widely used AM is fused deposition modeling (FDM), which uses a melted filament and deposited it layer by layer. The common filaments used are made of PLA, PP, and ABS, which are available at the online market with variety of prices depend on the quality. It is an advantage if we can make these filaments. In filament manufacturing, the dimensional accuracy is one of the most important factors to comply with the existing 3D printers. The aim of this research is to fabricate a filament made of PP, then assessed the quality based on the accuaray of the targeted diameter of 1.75 mm. The manufacturing process used a self-made plastic extrusion machine. Variations were made on three variables with three levels each. There are (i) heater band temperature with a minimum and maximum range (150/170 oC, 155/175 oC and 160/180 oC), (ii) winding speed (13 mm/s, 16 mm/,s and 19 mm/s), and (iii) roll distance to the nozzle set point (200 mm, 500 mm and 700 mm). Taguchi L9 design was used to design the experiments and analysis.Minitab 19 was employed to find the S/N ratio and analysis the variance (ANOVA). The results of the analysis state that two parameters have a significant effect on the dimensions of the filament, i.e. temperature and roll distance to the nozzle, while, the winding speed has no dominat effect. The best accuracy of filaments diameter was achieved when applying a combination of temperature (160/180 ⁰C), the distance between the nozzle to the roll of 700 mm, and winding speed of 13 mm/s.
Universitas Gadjah Mada
Laboratorium Kemasan, Fakultas Teknik, Universitas Jember
2022-05-09
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/63878
10.22146/teknosains.63878
Jurnal Teknosains; Vol 11, No 2 (2022): June; 162-173
Jurnal Teknosains; Vol 11, No 2 (2022): June; 162-173
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/63878/33716
Copyright (c) 2022 Mochamad Edoward Ramadhan, Mahros Darsin, Sains Ilham Akbar, Danang Yudistiro
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/64166
2021-02-18T04:52:57Z
teknosains:EDT
EDITORIAL
Siswomihardjo, Widowati
Jurnal Teknosains terbit sebagai salah satu kepedulian dari Sekolah Pascasarjana UniversitasGadjah Mada akan pentingnya media publikasi ilmiah bagi pengembangan ilmu pengetahuan.Suatu hasil atau karya ilmiah tidak akan ada manfaatnya bagi pengembangan ilmu pengetahuanapabila tidak dipublikasikan secara luas. Pada penerbitan ini Jurnal Teknosains telah memilihdelapan naskah yang dianggap dapat mewakili pengembangan ilmu-ilmu multidisipliner dengandasar keilmuan bidang teknologi, agronomi, dan kesehatan.Mohon maaf apabila masih banyak kekurangan dalam penerbitan ini. Redaksi akan terusberbenah untuk meningkatkan kualitasnya. Partisipasi rekan-rekan sangat diharapkan untukdapat berbagi pengetahuan dengan mengirimkan naskah ilmiahnya pada Jurnal Teknosains.Teriring ucapan terimakasih kepada semua pihak yang telah meluangkan waktu, tenaga, danilmu pengetahuan serta wawasan akademik.
Universitas Gadjah Mada
2020-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/64166
10.22146/teknosains.64166
Jurnal Teknosains; Vol 10, No 1 (2020): December; ii-ii
Jurnal Teknosains; Vol 10, No 1 (2020): December; ii-ii
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/64166/30654
Copyright (c) 2021 Widowati Siswomihardjo
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/66241
2022-12-18T12:41:25Z
teknosains:ART
Organizational internal and external resources as drivers of success in product development: A conceptual model
Lasalewo, Trifandi
Hartono, Budi
Subagyo, Subagyo
Yuniarto, Hari Agung
Industrial Engineering; product development
product success; internal resources; external resources
Products succeed if they meet customer needs and expectations. However, the capability of a corporation or organization to achieve the success of its products is determined by many variables, including being able to exploit its internal and external resources. This study is aimed to test variables that generate impacts on successful products. With the aid of research tool Vosviewer, a bibliometric network is mapped based on Scopus data of previous publications. Then an in-depth analysis is conducted on variables that are identified with a systematic review technique, in which corporational internal and external factors that have great significance on the success of products are grouped. By virtue of this research, a conceptual model is built to describe how corporational internal and external resources affect product success. It is found driving forces in promoting success of products are four internal resources like product characteristics, organization & management characteristics, innovative, and knowledge sharing, and one external resource market characteristics. The conceptual model built in this study would serve as a model for measuring the success of product development in the subsequent studies.
Universitas Gadjah Mada
Yosephine Suharyanti (Department of Industrial Engineering, Atma Jaya University Yogyakarta, Indonesia)
Sunardi (Department of Industrial Engineering, Gorontalo State University, Indonesia)
Musadad (Riau University, Indonesia)
2022-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/66241
10.22146/teknosains.66241
Jurnal Teknosains; Vol 12, No 1 (2022): December; 1-18
Jurnal Teknosains; Vol 12, No 1 (2022): December; 1-18
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/66241/35423
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/66241/16753
Copyright (c) 2022 Trifandi Lasalewo et al.
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/67932
2022-05-09T05:42:33Z
teknosains:ART
Analisis spasial temporal zona rawan kekeringan lahan pertanian berbasis remote sensing
Utomo, Agus Suprihatin
Hadi, M. Pramono
Nurjani, Emilya
Environmental Science/ Geoinformatics for Disaster Management
Indeks Kekeringan; NDDI; Anomali Kekeringan Lahan Pertanian; Bantul
A mapping model of drought-prone zones for agricultural land based on Geographic Information Systems is needed to determine the distribution of drought vulnerability levels that occured in Bantul Regency, DI Yogyakarta. This study aims to determine the estimated area of agricultural land drought based on the interpretation of aerial images. This study compares the performance of the drought potential index of agricultural land using the Normalized Difference Drought Index (NDDI) algorithm based on remote sensing technology/ Landsat 8 satellite imagery to identify the estimated zones indicated for agricultural land drought that occurred in Bantul Regency, based on trends in spatio-temporal data with recording intervals from the 2015 until 2020 data representative during the dry season. Comparisons were made by looking at the performance between indices extracted from Landsat 8 imagery data based on the value of the green vegetation parameter/ Normalized Difference Vegetation Index (NDVI) and the soil and vegetation moisture parameters/ Normalized Difference Water Index (NDWI). The method used in this research is descriptive correlative method: quantitative and qualitative deductive using geostatistical indicators based on big data analysis to measure and compare various data variables spatio-temporal. The distribution of agricultural land drought through the NDDI index transformation method on a normal, mild, moderate, to severe scale occurs in almost all areas of Bantul Regency. This happened, due to the influence of natural activities of the global climate phenomenon ENSO, the impact of the transition of the El Nino phenomenon to La Nina (wet drought) which was more dominant in 2016. The average area affected by drought in Bantul Regency on a normal scale affected was ± 6.500,49 ha, affected by mild drought was ± 17.192,16 ha, affected by moderate-scale drought was ± 8.636,155 ha, and affected by drought of heavy scale agricultural land was ± 2.407,485 ha.
Universitas Gadjah Mada
2022-05-09
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/67932
10.22146/teknosains.67932
Jurnal Teknosains; Vol 11, No 2 (2022): June; 112-127
Jurnal Teknosains; Vol 11, No 2 (2022): June; 112-127
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/67932/33712
Copyright (c) 2022 Agus Suprihatin Utomo, M. Pramono Hadi, Emilya Nurjani
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/67962
2022-12-18T12:28:45Z
teknosains:ART
Analisis potensi penerapan teknologi produksi bersih pada c-maxi alloycast, Yogyakarta
Masri, Dewi
Wagiman, Wagiman
Sopha, Bertha Maya
Magister Ilmu Lingkungan, Minat Studi Magister Teknologi untuk Pengembangan Berkelanjutan
Clean Production; CV C-Maxi Alloycast; Reduce; Reuse;Recycle; Aluminum
CV C-Maxi Alloycast is an industry engaged in the manufacture of household appliances (pans) made of aluminum which is located in Yogyakarta. The aim of the study was to identify the potential application of clean production principles in CV C-Maxi Alloycast. The methods used were production process mapping, waste analysis through liquid waste testing and potential analysis of clean production principles. The results obtained for the production process were smelting aluminum and scrap, pouring molten metal into molds, lifting molds and providing coolant, lifting castings, turning, filing, quality control, storage and distribution. Based on the laboratory test, the characteristics of the liquid waste produced by the CV C-Maxi Alloycast were pH 8.9; COD 52.1 mg/L; BOD 21.4 mg/L; TSS 6660 mg/L; Fe 4,2440 mg/L; Cu 0.0130 mg/L; and Zn 0.0893 mg/L. All parameters indicate that the value meets the quality standard, but the TSS content did not meet the NAB (Threshold Value) which refers to the Regulation of the Minister of the Environment of the Republic of Indonesia No. 5 of 2014 and the Regulation of the Special Region of Yogyakarta (DIY) No. 7 of 2016. Clean production opportunities were: good housekeeping, application of 3R (Reduce, Reuse, Recycle) on solid waste, construction of B3 Waste TPS and capacity building of human resources. Environmental performance had increased based on the Green Industry Standard (SIH) from level 1 to level 2 with a value of 53% to 65% with the implementation of clean production. The economic performance of implementing clean production gains a profit of Rp. 77,412,000,-/year, then the second alternative, namely recycling aluminum scrap is an economical alternative to clean technology with a 5-year NPV value of Rp. 37,853,056,558,- Implementing clean production can have a positive impact on the environment and the economy.
Universitas Gadjah Mada
2022-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/67962
10.22146/teknosains.67962
Jurnal Teknosains; Vol 12, No 1 (2022): December; 32-43
Jurnal Teknosains; Vol 12, No 1 (2022): December; 32-43
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/67962/35425
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/67962/17649
Copyright (c) 2022 Dewi Masri dkk.
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/68248
2021-08-05T14:02:05Z
teknosains:EDT
EDITORIAL
Siswomihardjo, Widowati
Sekolah Pascasarjana Universitas Gadjah Mada dengan keragaman program studinya merupakan tempat dari pengembangan ilmu-ilmu multidisipliner dengan dasar keilmuan bidang teknologi, agronomi, dan kesehatan. Sebagai tuntutan dari pengembangan ilmu pengetahuan dan teknologi, Jurnal Teknosains terbit sebagai wadah untuk mempublikasikan hasil-hasil penelitian yang mendasar serta inovatif. Kehidupan makhluk di dunia tidak pernah bisa lepas dari permasalahan. Setiap saat muncul permasalahan mulai dari yang sederhana sampai dengan yang bersifat sangat kompleks. Akan tetapi, kompleksitas dari permasalahan-permasalahan yang muncul justru menjadi tantangan yang besar bagi pengembangan ilmu pengetahuan serta para akademisi. Hal tersebut dapat dibuktikan melalui artikel-artikel yang dipublikasikan penerbitan ini. Pada edisi ini ada delapan artikel yang dipublikasikan. Tim redaksi telah telah berupaya secara konsisten untuk memilih artikel serta menyuntingnya berdasarkan pedoman penulisan publikasi ilmiah. Penyuntingan artikel telah melibatkan mereka yang ahli di dalam bidanya. Akhir kata, mohon maaf atas belum sempurnanya terbitan ini serta terima kasih yang tidak terhingga kepada semua pihak yang telah bersusah payah ikut terlibat dalam penerbitan ini. Selamat membaca dan semoga bermanfaat bagi pengembangan ilmu pengetahuan serta wawasan akademik kita semua.
Universitas Gadjah Mada
2021-08-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/68248
10.22146/teknosains.68248
Jurnal Teknosains; Vol 10, No 2 (2021): June; ii
Jurnal Teknosains; Vol 10, No 2 (2021): June; ii
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/68248/31873
Copyright (c) 2021 Widowati Siswomihardjo
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/69113
2021-12-05T17:30:12Z
teknosains:ART
Employing lipase of candida antarctica (calb) as catalyst in the acetylation of para-aminophenol in aqueous and water-free medium
Ismail, Hilda
Setiyani, Evi Lande
Indriyawati, Dwi Titus
Sudarmanto, B. S. Ari
CaLB; para-aminophenol; acetylation; oxidative amidation
Candida antarctica lipase B (CaLB) is one of lipase classes enzymes that has many advantages to be used in the process of synthesizing organic compounds. In this study, some experiments were conducted to examine the ability of CaLB as a catalyst in the para-aminophenol (PAP) acetylation to produce paracetamol as the result. Two types of research have been carried out, the first one is to utilize CaLB to catalyze acetylation of PAP in a water-free reaction medium, and the second one is to use CaLB as catalyst in aqueous medium through oxidative amidation reaction. Reaction in water free system was held in ethyl catalyst acetate as solvent that also act as the acyl donor, while in the aqueous medium, acetylacetone was used as acyl donor and ethyl acetate as source to produce peracid that will be used as oxidator. Analysis was done by HPLC and TLC densitometric to follow the amount of paracetamol produced. The results of CaLB-catalyzed acylation in water free system showed that the enzyme could accept PAF and ethyl acetate as a substrate in a nucleophilic substitution reaction, resulting in paracetamol as a product. However, the yield from the acylation of PAP is still not satisfactory. In the reaction in aqueous medium, CaLB has been proven to show its activity to catalyze the acylation of PAP with acetylacetone, as well as the reaction of peracid formation from ethyl acetate. The results show that this strategy can work well and give better yields than the other reaction in water-free medium.
Universitas Gadjah Mada
2021-12-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/69113
10.22146/teknosains.69113
Jurnal Teknosains; Vol 11, No 1 (2021): December; 66-75
Jurnal Teknosains; Vol 11, No 1 (2021): December; 66-75
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/69113/32745
Copyright (c) 2021 Hilda Ismail, Evi Lande Setiyani, Dwi Titus Indriyawati, B. S. Ari Sudarmanto
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/69216
2023-05-27T11:29:16Z
teknosains:ART
Pengembangan teknologi tangki pintar sebagai sistem peringatan dini bencana kekeringan
Kurniawan, Adhy
Setyawan, Galih
Sembada, Pratama Tirza Surya
Sabian, Geradus Nieken
Technology and Disaster
Bencana Kekeringan; Pemantau Ketersediaan Air; Sensor Ultrasonik
According to the National Disaster Management Agency, in 2021 there were 5,402 incidents recorded, one of them being drought disasters. During the drought, the availability of clean water was minimal, so clean water assistance came from other areas. The problem that is often encountered in the field is delays in water distribution assistance due to sudden information and the location of the aid is in areas that are difficult to reach. This research developed a water tank technology equipped with a sensor to provide information about water availability, the location of the tank placement to speed up information on dropping water in drought areas. This technology uses the NodeMCU ESP8266 module which functions as a microcontroller, to provide sensor-based information that detects the quantity and quality of water as well as the location of the tank. This system is based on the Internet of Things (IoT) and Blynk Android which makes it easier for people to get information in real time. The water availability indicator is presented in a three-color graphical display, namely green is a safe sign (sufficient water), yellow is a warning sign (water is reduced), and red is a sign that water availability is running low and it is necessary to drop clean water. Other information presented is water quality parameters such as pH, TDS, turbidity, and temperature as well as the location of the tank. This technology supports the achievement of SDGs, namely goals number 6 (clean water and proper sanitation) and 11 (sustainable cities and settlements).
Universitas Gadjah Mada
Kementerian RistekDikti, Direktorat Penelitian UGM
2023-05-27
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/69216
10.22146/teknosains.69216
Jurnal Teknosains; Vol 12, No 2 (2023): June; 191-198
Jurnal Teknosains; Vol 12, No 2 (2023): June; 191-198
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/69216/36456
Copyright (c) 2023 Adhy Kurniawan et al
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/70731
2022-12-18T12:50:44Z
teknosains:ART
Efisiensi termal dan efektivitas produksi kondensor pada solar still terpadu
Mugisidi, Dan
Fajar, Adittia
Rifky, Rifky
Heriyani, Oktarina
Teknik Mesin; Energi Terbarukan
solar still; distillation; desalination; condenser
Water is a basic human need that must be fulfilled. The need for clean water is increasing while the availability of clean water is limited, so researchers are trying to use sea water as raw material for fresh water. Sea water is an abundant source of water but still contains salt, therefore it is necessary to separate sea water and its salt content to produce fresh water or desalination, one way is to use solar stil. Solar stills are mostly used for desalination processes on the coast and remote area because they can be operated easily and can be manufactured at low cost. However, solar still has low productivity, so various studies have been carried out to increase desalination yields, such as the addition of a condenser. Aim of this study was to determine the thermal efficiency and effectiveness of the condenser on solar stills. The research was conducted in period March - May 2021. The materials used are aluminum with a length of 300 mm, a width of 300 mm and a thickness of 1.6 mm for the basin plate, double glass with a thickness of 3 mm for the top and sides of the solar still. The study was conducted indoor with radiation intensity using halogen lamps. The variables measured were water temperature, evaporation, inner glass surface, condenser, inlet and outlet of the condenser cooler using a fluke meter, radiation intensity using a solar power meter and desalinated water using a digital balance. From the results of the study, the average thermal efficiency of the condenser in the integrated solar still reached 83.94% and the desalination mass of seawater reached 451.32 grams with the effectiveness of condenser production of 96.4% and the correlation value of 0.99.
Universitas Gadjah Mada
Lembaga Penelitian dan Pengembangan, Universitas Muhammadiyah Prof DR HAMKA
2022-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/70731
10.22146/teknosains.70731
Jurnal Teknosains; Vol 12, No 1 (2022): December; 19-31
Jurnal Teknosains; Vol 12, No 1 (2022): December; 19-31
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/70731/35424
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/70731/19282
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/70731/19290
Copyright (c) 2022 Dan Mugisidi dkk.
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/71007
2021-12-05T17:30:12Z
teknosains:EDT
EDITORIAL
Siswomihardjo, Widowati
Sekolah Pascasarjana Universitas Gadjah Mada mempunyai minat serta program studi yang beragam. Dengan dasar keilmuan lintas disiplin, dapat menjadi bukti bahwa Sekolah Pascasarjana mengembangkan diri untuk memenuhi kebutuhan keilmuan agar dapat menyelesaikan permasalahan di dalam kehidupan manusia yang juga sangat beragam. Tidak bisa dipungkiri bahwa kondisi pandemi covid-19 tengah melanda semua negara, tetapi ternyata hal itu tidak menyurutkan perhatian para peneliti untuk mempublikasikan hasil penelitiannya. Hal tersebut dibuktikan antara lain dengan banyaknya makalah yang masuk ke tim redaksi. Secara konsisten dan profesional tim redaksi telah memilih serta melakukan penyuntingan terhadap delapan artikel yang dipublikasi dalam penerbitan ini. Adapun penyuntingan artikel telah melibatkan para reviewer yang sesuai dengan bidangnya. Sudah sepuluh tahun Jurnal Teknosains hadir, tim redaksi terus berupaya untuk melakukan penyempurnaan. Mohon maaf apabila masih terdapat kekurangan dalam penerbitan di edisi Desember 2021, Volume 11, Nomor 1. Terima kasih yang tidak terhingga kepada semua pihak yang telah meluangkan waktu serta tenaga dalam proses penerbitan ini. Selamat membaca, semoga bermanfaat bagi pengembangan ilmu pengetahuan serta wawasan akademik kita semua.
Universitas Gadjah Mada
2021-12-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/71007
10.22146/teknosains.71007
Jurnal Teknosains; Vol 11, No 1 (2021): December; ii
Jurnal Teknosains; Vol 11, No 1 (2021): December; ii
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/71007/32772
Copyright (c) 2021 Widowati Siswomihardjo
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/72606
2022-12-18T12:40:17Z
teknosains:ART
Optimization of chitinase production from bacillus cereus smg 1.1 using response surface methodology
Widodo, Adnan
Puspita, Indun Dewi
Ustadi, Ustadi
Chitinase; Chitin; Fructose; MgSO4.5H2O; RSM
Shrimp shell waste are potential to be processed further into value-added products, such as N-acetylglucosamine (GlcNAc). In the production of GlcNAc, biological approach is preferred and environmentally friendly to chemical treatment. Chitinase is an enzyme that plays a vital role in bioprocessing of shrimp shell waste into GlcNAc. Previously, Bacillus cereus SMG 1.1 was isolated from fermented shrimp paste (terasi) and showed the ability to produce chitinase. This study was designed to determine the optimum medium for the production of chitinase from B. cereus SMG 1.1 through the Response Surface Method (RSM) using a factorial design with 15 treatments. The optimization of the media was carried out by determining the factors that influence the production of chitinase through the Plackett-Burman design followed by optimization of the concentration of the media through the Box-Behnken design. The test was designed to assess the effect of the independent variables on chitinase activity. Placket Burman analysis shows that colloidal chitin, fructose, and MgSO4.5H2O were the significant components in the medium affecting the production of chitinase by B. cereus SMG 1.1. Box-Behnken analysis developed a linear model capable of predicting the response. The highest response value was achieved at a concentration of 0.75% fructose, 1.5% colloidal chitin, and 0.075% MgSO4.5H2O resulted in optimum chitinase activity of 0.0016 U/ml.
Universitas Gadjah Mada
2022-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/72606
10.22146/teknosains.72606
Jurnal Teknosains; Vol 12, No 1 (2022): December; 44-55
Jurnal Teknosains; Vol 12, No 1 (2022): December; 44-55
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/72606/35426
Copyright (c) 2022 Adnan Widodo et al.
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/72609
2023-05-27T11:29:14Z
teknosains:ART
Dampak pembangunan Yogyakarta international airport di daerah rawan bencana tsunami dengan dukungan sistem informasi geografis
Satria, Ilham
Mardiatno, Djati
Pangaribowo, Evita Hanie
Ilmu Lingkungan and Geoinformasi
Spatial Analysis; Yogyakarta International Airport; Physical Change; Tsunami Model; Land Value
The construction of a new airport in tsunami disaster prone area in Kulon Progo Regency has been impacting in land use and land value. The changes in land use will impact on changing tsunami hazard model. This research aims to analyze the impact of a new airport on physical changes and land value changes in Temon District with geographic information system. The research begins with inventory of spatial data from various agencies. Multi-temporal image interpretation is resulted in 2015 and 2020 land use maps. Physical changes and tsunami models analysis were carried out using spatial analysis in ArcGIS. The making land value change maps using 2015 and 2021 land value zone maps. The analysis effect of new airports and tsunami hazard using multiple linear regression. Data validation was carried out by sampling techniques and field surveys. The results of spatial analysis is physical growth from 2015-2020 covering an area 418,019 m² and loss of a built area 149,261 m². The changes in the tsunami model from 2015-2020 increased by 118,740 m². The changes in land value from 2015-2021 is increasing the average value of Rp. 1,317,088/ meter² or 652%. The results of multiple linear regression analysis and community interviews concluded that the existence of an airport is very influential on increasing land value compared to the effect of tsunami vulnerability.
Universitas Gadjah Mada
2023-05-27
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/72609
10.22146/teknosains.72609
Jurnal Teknosains; Vol 12, No 2 (2023): June; 148-163
Jurnal Teknosains; Vol 12, No 2 (2023): June; 148-163
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/72609/36459
Copyright (c) 2023 Ilham satria dkk
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/73676
2022-12-18T12:37:29Z
teknosains:ART
Optimasi unjuk kerja pada sistem pendinginan adsorpsi dengan siklus pemanasan-ulang kombinasi
Wirajati, I Gusti Agung Bagus
Sunu, Putu Wijaya
Madrini, Ida Ayu Gede Bintang
Muliati, Ni Kadek
Teknik Mesin
adsorption system; cycle combination; optimization; COP; cooling capacity
The adsorption refrigeration system is a cooling system that offers several benefits, including being environmentally friendly due to the very small amount of global warming effect given, the lack of potential for ozone depletion, the low energy consumption of its operation, the low heat source used in its operation and good for reducing gas emissions on earth. This paper describes a combined reheating adsorption refrigeration system with three heat exchangers, as well as operating modes. The operation of the adsorption refrigeration system with combined reheating is schematically described with operational modes and diagrams. This adsorption cooling system is made up of three heat exchangers (H), one evaporator, and one condenser. The combination cycle is intended for heat exchanger systems that operate in a reheat cycle (H1 and H2) and a non-reheating cycle (H3). This paper also discusses system cycle time optimization. Research to get the optimum value of cycle time in this system is still rarely done and therefore optimization of cycle time is carried out on the system to get the best performance. The PSO (particle swarm optimization) program is paired with the MATLAB program to simulate the performance of the system under discussion while also enhancing its performance. The goal of this work is to use simulation to determine the optimal system performance versus the overall cycle time, which includes adsorption/desorption time, pre-cooling and pre-heating time as well as mass recovery time. Getting the best value for the entire cycle time is made possible by fusing the simulation of the system's process performance with performance optimization. As a results, the greatest increase in the optimization results' performance value occurs at a heat source temperature of 55ºC with a longer time to achieve optimal performance.
Universitas Gadjah Mada
2022-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/73676
10.22146/teknosains.73676
Jurnal Teknosains; Vol 12, No 1 (2022): December; 99-109
Jurnal Teknosains; Vol 12, No 1 (2022): December; 99-109
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/73676/35438
Copyright (c) 2022 I Gusti Agung Bagus Wirajati dkk.
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/74533
2022-05-09T07:26:46Z
teknosains:EDT
Editorial
Siswomihardjo, Widowati
Jurnal Teknosains merupakan salah satu jurnal di bawah Sekolah Pascasarjana UniversitasGadjah Mada yang memiliki minat serta program studi yang beragam. Dengan berangkatdari keilmuan lintas disiplin, Jurnal Teknosains edisi Juni ini juga mengemban semangat yangberagam dalam menerbitkan suatu hasil atau karya ilmiah dari beragam disiplin ilmu. Selain itu,penerbitan di edisi ini telah memilih delapan artikel dari lintas institusi. Hal tersebut dilakukanuntuk menambah diversifikasi penulis dari Jurnal Teknosains agar semakin memberikan dampakyang luas dalam bidang publikasi, khususnya dalam bidang sains dan teknologi secara nasional.
Universitas Gadjah Mada
2022-05-09
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/74533
10.22146/teknosains.74533
Jurnal Teknosains; Vol 11, No 2 (2022): June; i-ii
Jurnal Teknosains; Vol 11, No 2 (2022): June; i-ii
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/74533/33724
Copyright (c) 2022 Widowati Siswomihardjo
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/76613
2023-05-27T11:29:16Z
teknosains:ART
Pengaruh faktor kerentanan fisik dan sosial akibat erupsi gunung merapi terhadap ketercapaian sdgs dan irbi
Aristo, Muhammad Reza
Hizbaron, Dyah Rahmawati
Vulnerability; Risk, SDGs; Merapi; Yogyakarta
The purpose of this study was to identify the influence of physical and social vulnerability factors due to the eruption of Mount Merapi in Yogyakarta. Furthermore, this study identifies the significance of physical and social vulnerability to the achievement of the SDGs in Yogyakarta. The achievement of SDGs number 11 is supported by indicators of the percentage of the number of dead or missing victims to the total number of disaster events, disaster risk index, regional resilience index, number of resilient villages/kelurahan that have been formed, integrated early warning system, and availability of contingency plans. The achievement of SDGs number 13 is further explained using a simple indicator, namely greenhouse gas emissions. In this case, the research contribution is expected to add an indicator explaining the achievement of SDGs number 13 in addition to climate change. This study uses IRBI (Indonesian Disaster Risk Index) data to indicate the achievement of disaster risk reduction in the research area. The achievement of the SDGs, which has increased every year, certainly has positive implications for handling vulnerable groups. The location of this research study is the District of Turi. Turi sub-district is important to be studied considering the current conditions and potential future exposure to the eruption of Mount Merapi. This study utilizes the Analytical Hierarchy Process (AHP) technique to determine the weight of the indicators used in vulnerability modeling. The research data were tested using statistical analysis of data normality, probabilistic Poison, and the two-way ANOVA effect test. The results showed that there was no influence of the variables of physical vulnerability and social vulnerability on the existing SDGs. The conclusion of the research on the effect of physical and social vulnerability factors on the eruption of Mount Merapi Volcano shows that there is no influence of the value of physical and social vulnerability in Turi District on the achievement of SDGs in the form of the DIY Disaster Risk Index
Universitas Gadjah Mada
2023-05-27
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/76613
10.22146/teknosains.76613
Jurnal Teknosains; Vol 12, No 2 (2023): June; 177-190
Jurnal Teknosains; Vol 12, No 2 (2023): June; 177-190
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/76613/36454
Copyright (c) 2023 Muhammad Reza Aristo & Dyah Rahmawati Hizbaron
http://creativecommons.org/licenses/by-sa/4.0
oai:jurnal.ugm.ac.id:article/77549
2023-05-27T11:29:15Z
teknosains:ART
Perkembangan kota banda Aceh pasca bencana tsunami 2004
Al-Fath, Raja
Marsoyo, Agam
Urban and Regional Planning
City Development; Built-Up Area; Post Tsunami; Banda Aceh City
Every city keeps growing as a result of population growth and has an impact on space requirements. Same as Banda Aceh City which continues to grow, but its development has stopped due to the 2004 tsunami disaster. Residential areas tend towards the north or the coast, which is tsunami-prone zone. The purpose of this study is to describe the direction and built-up area development of Banda Aceh City after the tsunami from 2005-2011, 2011-2015, and 2015-2020. The data used in this study is spatial data such as maps and satellite images sourced from Banda Aceh planning and development agency. Data analysis uses spatial approach with the overlay method. Development of the built-up area of Banda Aceh city based on the period 2005-2011, 2011-2015, and 2015-2020 shows that the built-up area leads to the northern and southern parts of Banda Aceh City. Development of the northern part of the city, Districts of Jaya Baru, Meuraksa, Kuta Raja, Kuta Alam, and Syiah Kuala was a result of the rehabilitation and reconstruction efforts such as housing, roads, and facilities after tsunami and turned the ponds and vacant land into housing and service trading areas. The northern part of Banda Aceh City was tsunami hazard-prone zone. Meanwhile, development of the southern part of the city, districts of Banda Raya, Lueng Bata, and Ulee Kareng, was influenced by Mohamad Hasan and Ali Hasyimi street which triggered the development of residential areas, office areas, service trading areas, and public facilities. Southern part of the city was not directly affected by the tsunami disaster. In addition, built-up area development has spread to the Aceh Besar regency.
Universitas Gadjah Mada
2023-05-27
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://jurnal.ugm.ac.id/teknosains/article/view/77549
10.22146/teknosains.77549
Jurnal Teknosains; Vol 12, No 2 (2023): June; 164-176
Jurnal Teknosains; Vol 12, No 2 (2023): June; 164-176
2443-1311
2089-6131
eng
https://jurnal.ugm.ac.id/teknosains/article/view/77549/36457
https://jurnal.ugm.ac.id/teknosains/article/downloadSuppFile/77549/23086
Copyright (c) 2023 Raja Al-Fath & Agam Marsoyo
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