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Tangguh Okta Wibowo
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teknosains@ugm.ac.id
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teknosains@ugm.ac.id
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Gedung Lengkung, Unit 1, Lantai 2, Sayap Timur Sekolah Pascasarjana Universitas Gadjah Mada Jalan Teknika Utara, Pogung, Sleman- Yogyakarta Telp. (0274-564239 extc. 207)
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INDONESIA
Jurnal Teknosains
Published by Universitas Gadjah Mada
ISSN : 20896131     EISSN : 24431311     DOI : https://doi.org/10.22146/teknosains.xxxx
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Teknosains is a peer-reviewed journal which began publication in 2011, and published each semester in June and December. It is a series of scientific publications in engineering, science and technology area. Jurnal Teknosains aims to encourage research in Science and Technology studies. Topics addressed within the journal include but not limited to: Engineering, which is divided into several topics: Mechanical Engineering, Industrial Engineering, Biomedical Engineering, Chemical Engineering, Nuclear and Physical Engineering, Civil Engineering, and Planology. Basic Sciences, which is divided into: Chemistry and Physics Health Sciences, which is divided into: Medical, Biotechnology specially in Health Science, and Dentistry
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 8 Documents
 1 
Search results for , issue "Vol 13, No 1 (2023): December" : 8 Documents clear
Kajian kualitas air dan strategi pengelolaan Rawa Jombor, Klaten, Jawa Tengah Rina, Timotius Ragga; Purnama, Setyawan; Nugroho, Andhika Puspito
Jurnal Teknosains Vol 13, No 1 (2023): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.55560

Abstract

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.
Microsoft building footprint application To detect human exposure due to tsunami Saragi, Andes; Mardiatno, Djati; Hizbaron, Dyah Rahmawati
Jurnal Teknosains Vol 13, No 1 (2023): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.79526

Abstract

Tsunami events at night are more prone to causing fatalities because humans are resting in residential buildings (houses). In this study, residential buildings were extracted using the Microsoft Building Footprint (MBF), which resulted from applying artificial intelligence technology. This study aims to analyze the number of people exposed to tsunamis at night using MBF. The tsunami modeling was carried out using the Berryman method. Sentinel 2-A Image extracted from Google Earth Engine. The results of the inundation modeling analysis show that the total inundated area is 717 Ha or 17.34% of the total area. The results of the MBF accuracy analysis on the entire data are a Precision of 99.02%, Recall of 98.40%, and F1 score of 98.71%. The results of the MBF error analysis are False Positive 0.97%, False Negative 1.60%, and Intersection of Union 0.12%. The number of people exposed is 2,749, or 6.32% of the total population.
Evaluasi kapasitas masyarakat tangguh bencana di kawasan rawan erupsi gunung api merapi Fahmi, Wikan Amarudin; Hizbaron, Dyah Rahmawati
Jurnal Teknosains Vol 13, No 1 (2023): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.80157

Abstract

Disaster events have become a national issue, one of the reasons is that Indonesia is crossed by a series of volcanoes, such as Merapi Volcano. It erupted back in 2010 and caused massive impact, especially at Kepuharjo Village, Sleman Regency, Yogyakarta. This research is intended to identify the capacity of community resilience due to the Merapi Volcano eruption at Desa Kepuharjo, Kabupaten Sleman. The study collects primary data from interviews and questionnaires from unit samples of Kepuharjo Village using simple random sampling techniques. The data collected from the modified version of the questionnaire were processed using scoring techniques and analyzed using descriptive frequency. The research revealed that the questionaire to capture capacity that generally employed are not fully compliant to be used at the research area. Overall, the questionaire able to capture to assess the capacity classification which are medium (the capacity achievement is comprehensive but not significant to reduce the impact of the disaster) and high ((the capacity achievement is comprehensive and there is a commitment between the government and the community). Kepuharjo Village is classified into classes of 3-5 with a percentage of 65%. Efforts to increase capacity have been carried out by the government, assisted by the community, both by establishing institutions, physical mitigation, and non-physical mitigation. 
Impact of land use changes on the tsunami hazards in part of coastal Kebumen Pamungkas, Bagus; Mardiatno, Djati; Retnowati, Arry
Jurnal Teknosains Vol 13, No 1 (2023): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.80954

Abstract

This research was conducted to analyze land use change from 2016 to 2022 and their impact on the tsunami hazard zone on the coast of Kebumen Regency. For land use change analysis, remote sensing, geographic information systems (GIS), and statistical tests were applied to Sentinel-2A satellite imagery. The tsunami hazard was simulated using tsunami inundation modeling based on land use spatial data and DEMNAS processed using GIS. Land use changes occurred significantly in the study area, especially in Mirit District. The Southern Cross Road (JJLS) and coastal morphological conditions influence land use change patterns. Land use changes impact changes in the tsunami hazard zone, especially in the use of fir forests and shrimp ponds. The research findings can be used as input for developing a tsunami disaster mitigation plan and detailed spatial planning on the coast of Kebumen Regency.
Analisis daya tampung beban pencemaran sungai bedadung Jember menggunakan software wasp Novita, Elida; Bisri, Moch. Imron Mustofa; Pradana, Hendra Andiananta
Jurnal Teknosains Vol 13, No 1 (2023): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.81383

Abstract

The distribution of pollution sources from domestic, agricultural, and industrial activities has the potential to reduce the water quality of the Bedadung River, thereby negatively impacting its self-purification. The aim of this research is to model the parameters, specifically the values of Biochemical Oxygen Demand (BOD) and Total Suspended Solid (TSS), and to determine the river's capacity to carry the pollution load using the Water Quality Analysis Simulation Program (WASP). The input parameters for this study include BOD, TSS, and water discharge data collected at 21 monitoring points along the Bedadung River, with the river water sampling technique employing the grab sampling method. The output validation of the modeling is assessed using the Root Mean Square Error (RSME) equation, and the research results indicate that the water quality modeling with WASP software effectively reflects the dynamics of BOD and TSS parameters in the Bedadung River, as supported by an average output validation value of 9%. The pollution load capacity values for the Bedadung River in the Patrang - Ajung segment are found to be 361.48 kg/day for BOD and 5368.31 kg/day for TSS. The positive values suggest that the Bedadung River still has the capacity to naturally degrade organic pollutants.
Pengaruh faktor pengali asimetri terhadap kapasitas beban angkat perempuan Indonesia Kurnianingtias, Mayesti; Ardiyanto, Ardiyanto
Jurnal Teknosains Vol 13, No 1 (2023): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.82631

Abstract

Manual material handling can improve occupational diseases such as low back pain and musculoskeletal disorders. In an attempt to reduce the risk of injury as a result of such work, NIOSH published the recommended weight limit (RWL) equation. The RWL formulation was made with Europeans and Americans, so this research was conducted to see the suitability of the RWL formulation for Asians, especially Indonesians. The participants of this study were 30 Indonesian women students. The independent variable in this research is the asymmetry multiplier. The participants perform asymmetric lifting in 0, 30, 60, and 90 degrees with the frequency of 1 lift/min in a 30-minute duration. Other multiplier factors such as the vertical multiplier, distance multiplier, and coupling multiplier are made to have a value of 1. The weight of the load lifted by the respondent is adjusted to the maximum load that each respondent can lift comfortably, which is usually called the maximum acceptable weight of lift (MAWL). The heart rate data used for analysis is the heart rate in the last five minutes. In addition, respondents also filled out the Borg RPE scale. The results of this study were that the heart rate increased from an average resting heart rate of 83.12 beats/minute to 90.6 beats/minute. The statistical test results showed that there was no significant effect between asymmetry lifting tasks on heart rate, energy expenditure, and the Borg's Scale RPE (α = 0,05). Energy expenditure in this study is still below the threshold set by NIOSH. From this study, the predicted AM equation of physiological for Indonesian (energy expenditure) is AM = 1 - (0,0024A) and the predicted AM equation of RPE is AM = 1 - (0,0029A).
Combination effectiveness of glucomannan and moringa oleifera leaf extract on lipid profil of hypercholesterolemia rats Wati, Dini Prastyo; Setyaningsih, Endang
Jurnal Teknosains Vol 13, No 1 (2023): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.82693

Abstract

cholesterol levels in the blood. This study aims to determine the effectiveness of the combination of glucomannan (Amorphophallus muelleri Blume) and Moringa oleifera leaf extract on the lipid profile of hypercholesterolemic Wistar rats. This research design used True experimental with a pretest-posttest control group design. The animal used in this study was 24 male Wistar rats (Rattus norvegicus) aged 8 weeks divided into 2 control groups and 6 treatment groups of glucomannan and Moringa oleifera leaf extract. The results of this study showed that there were significant changes in TC, TG, LDL-C, and HDL-C levels (p<0.05). It can be concluded that the combination of glucomannan (Amorphophallus muelleri Blume) and Moringa oleifera leaf extract can change the lipid profile effectively in the P5 (80mg/kgBW GAmB: 120mg/kgBW MoEL) and P4 (120mg/kgBW GAmB:80mg/kgBW MoEL ) as the most influential group in reducing TG, TC, LDL-C levels and increasing HDL-C levels.
Optimized condition for pei-based transient transfection of lifeact-gfp/nls-mcherry expressing plasmid used as cell barcode for syncytia live cell imaging Kumara, Dennaya; Harsan, Hayfa Salsabila; Novianti, Metta; Lestari, Dinda; Septisetyani, Endah Puji; Prasetyaningrum, Pekik Wiji; Paramitasari, Komang Alit; Meiyanto, Edy
Jurnal Teknosains Vol 13, No 1 (2023): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.89479

Abstract

The transfection efficiency positively affects the successful plasmid DNA transfer into cells, with the highlight on the amount of plasmid DNA and its ratio to the transfection reagent. Polyethyleneimine (PEI) is a cost-effective transfection reagent that facilitates DNA transfer by forming positively charged DNA complexes. It allows DNA to interact with negatively charged cell surfaces and enter the cells by endocytosis. In this study, we optimized the condition for transient transfection of life act-GFP/NLS-mCherry-expressing plasmid in BHK-21 and 293T cells using PEI. This plasmid is helpful as a biosensor of the cytoskeleton and nucleus that enables live imaging observation using a fluorescence microscope, for instance, in the observation of syncytium. Here, we optimized two independent variables: the amount of DNA (0.5 and 1 µg) and the ratio of DNA-PEI (1:3 and 1:4). GFP and mCherry expressions were observed at 24, 48, and 72 h post-transfection. As a result, transfection efficiency achieved by using PEI in 293T cells is higher than in BHK-21 cells, which are ~90% and ~50%, respectively. Moreover, amongst four different transfection conditions, in both cell lines, 1 µg of plasmid DNA with a 1:3 DNA-PEI ratio yields the most efficiency with the least amount of toxicity. We used this condition for the syncytia observation in 293T cells as a model of the cell-to-cell transmission of SARS-CoV-2. Syncytia formation was successfully observed by detecting the giant cells expressing GFP/mCherry with multiple nuclei.

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