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Perception of the community on the use of biogas as alternative energy (Case study: Jetak Village, Getasan sub district)

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IOP Conference Series: Earth and Environmental Science 2020年第1期481卷

作者： A Putri Purwanto H Purnaweni Study Program of Environmental Science School of Postgraduate Studies Diponegoro University Semarang Indonesia Faculty of Mathematics and Natural Sciences Semarang State University Semarang Indonesia Faculty of Chemical Engineering Diponegoro University Semarang Indonesia Faculty of Social Science and Political Science Diponegoro University Semarang Indonesia

The purpose of this research is to know public perception of biogas users in Jetak Village, Semarang Regency viewed from technological aspect, technical (biogas installation), biogas benefit, economy and environment. The method used qualitative descriptive with qualitative descriptive approach. The technique of determining key informants was done by purposive sampling. Data were obtained from cattle ranchers who lived in the study sites through interviews, observation and documentation. The result of this research is overall the perception about biogas energy get a positive response from user society. However, there are some things that should be considered for the government and others in providing assistance that is necessary to consider the evaluation and monitoring periodically so that the constraints experienced by the user community can be known early and can be found right solutions. In addition, the sustainability of the use of biogas energy can be done from generation to generation not just the aid which in the end becomes only useless materials.

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Effect of high rise building against transportation in campus area

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Journal of Physics: Conference Series 2019年第1期1375卷

作者： S H Djoeffan H Burhanidin W Weishaguna Regional and City Planning Study Program Faculty of Engineering Universitas Islam Bandung Bandung Indonesia

Jatinangor is located on the main regional road Bandung – Sumedang. The area which started as a rural area has been transformed to education function. The rapid growth in the region has implications for changes in land use, population increase and various socio-economic activities and most importantly has attracted various investors to conduct high rise building development to accommodate students who are educating in the education area. The emergence of various activities has resulted in increased generation and traffic volume that can cause congestion, increasing fuel consumption, reduced comfort, accidents and air, soil and water pollution which endanger human health in general, animals and plants. Data retrieval using Traffic Counting Method (TC) to identify traffic volumes which is then analyzed by measuring the level of road service based on the calculation by comparing road capacity and traffic volume. The purpose of this study is to find out the level of service road and propose alternative solutions to transportation problems on the Jatinangor highway.

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An Effort to Increase the Potential of Virgin Coconut Oil with Pendawa Technique

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IOP Conference Series: Materials Science and engineering 2019年第1期598卷

作者： E F Sapatra I Yuniarti R A S Imamsyah Industrial Chemical Engineering Technology Study Program Faculty of Vocational School Diponegoro University Indonesia

In order to overcome the disadvantages of conventional method, innovations on how to produce coconut oil were applied with the technique of PENDAWA (Pendayagunaan Asam Jawa). Coconut oil comes from coconut milk which is the substance between oil and water (emulsion). So to get coconut oil, acid is needed as an emulgator to break down emulsifying substances. In this case, Tamarind is used because it is cheap, available, contains a lot of antioxidants, and is efficacious. Coconut oil contains medium chain saturated fatty acids, namely MCT (Medium-chain triglycerides) where MCT provides extraordinary health enhancing properties. We compared three types of coconut oil, namely coconut oil in the traditional way, coconut oil with the addition of tamarind, and packaging oil on the market. The result was coconut oil with the Pendawa method very good in quality and quality with FFA 0.0067% and peroxide number of 1.5 mg ek/kg. In conclusion, this oil production with the PENDAWA method is very effective, efficient, high in quality, and provides high profit for the industry that wants to produce it.

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Analysis of tsunami hazard in the Southern Coast of West Java Province - Indonesia

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IOP Conference Series: Earth and Environmental Science 2020年第1期618卷

作者： W Windupranata N R Hanifa C A D S Nusantara G Aristawati M R Arifianto Research Group of Coastal Ocean and Maritime Engineering Faculty of Earth Sciences and Technology Institut Teknologi Bandung – Indonesia Research Laboratory of Hydrography Faculty of Earth Sciences and Technology Institut Teknologi Bandung Centre for Earthquake Science and Technology Research Centre for Disaster Mitigation Institut Teknologi Bandung Study Program of Geodesy and Geomatics Engineering Faculty of Earth Sciences and Technology Institut Teknologi Bandung

The Southern Coast of West Java Province in the Java Islands is one of prone and exposed area to tsunami hazard. It has about 428 kilometers coastline length, covering 5 administrational regencies (i.e. Sukabumi, Cianjur, Garut, Tasikmalaya, and Pangandaran). It is a strategic area that support many economic activities including tourism, fisheries, electricity power plants, agricultures, markets as well as social factors such as coastal villages, schools and other public facilities. The existence of this strategic area is threatened by the potential for a tsunami disaster mainly from megathrust along the Southern Coast of Java Island. On 2006, a tsunami earthquake of M7.7 occurred off Pangandaran Regency with tsunami height of 5-8 meters and inundated about 500 meters along southern coast of West and Central Java Province. The tsunami caused more than 600 casualties and damage to buildings, public facilities and insfrastructure. Yet, the Indonesia National Earthquake Source and Hazard Map suggest a bigger threat of a plausible M8.7 – M9.2 megathrust earthquake off Java island. This research aims to analyze and map potential areas affected by the tsunami in the South Coast of West Java Province based on numerical modelling carried out with Cornell Multi-grid Coupled Tsunami Model (COMCOT) v1.7 based on the several megathrust earthquake scenarios in southern off West Java. The results of tsunami modelling show that the highest impact is generated in the Sunda Straits & West Java - Central Java Megathrust Scenarios with highest tsunami inundation and the fastest travel time occurred in Cianjur Regency with 26,7 meters height and estimated arrival time of tsunami wave approximately 10 minutes after the mainshock, while the farthest inundation distance is estimated in Sukabumi Regency about 5.8 kilometers from the coast due to existence of river.

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Evaluation of communal wastewater treatment plant based on technical, institutional, and community participation aspects in South Surabaya

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IOP Conference Series: Earth and Environmental Science 2019年第1期259卷

作者： E Purnawanti N I Oktavitri D R M Isnadina N Fitriani Environmental Engineering Study Program Department of Biology Faculty of Science and Technology Universitas Airlangga Indonesia

This study aims to discover the obstacles and provide recommendations on the technical and institutional aspects of the chosen communal WWTP. The methods used in this study were field survey and questionnaire. the data were analyzed using quantitative, qualitative, and SWOT analysis. There are 11 out of 13 communal WWTPs that do not work optimally. The technical obstacle encountered in the operation of the chosen communal WWTPs is the huge building capacity that does not meet the criteria of HRT design. The recommendations for the technical problem include lowering the water level and reducing the number of baffles in communal WWTP. The obstacle faced in the operation of chosen communal WWTPs in terms of institutional and community participation aspects is that the maintenance is only known by few people. The recommendation for the aspects of institutional and community participation is for KPP to arrange a socialization on the maintenance of communal WWTP based on its maintenance module.

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Analytical model of retrofitted reinforced concrete beam column joints after experiencing severe damage from earthquake load simulation using SAP2000

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IOP Conference Series: Materials Science and engineering 2019年第1期508卷

作者： N Gosal I Imran M Riyansyah Post Graduate Program of Faculty of Civil Engineering Bandung Institute of Technology 40132 Bandung Indonesia Structural Engineering Department Faculty of Civil Engineering Bandung Institute of Technology 40132 Bandung Indonesia

An earthquake resistant structure should be able to perform as expected when it's struck by an earthquake such as it may experience slight damage and should be able to be repaired to its original state when struck by a design level earthquake. However, there are still debates whether reparation should also be viable when structures are experiencing severe damage. There are still a little to no studies about repairing severely damaged structures, therefore a study was made to see how severely damaged structures behaved after being repaired. Two beam column joints are used as specimens, which were severely damaged by an earthquake simulation before getting repaired. Both their initial and repaired condition are then modeled analytically using SAP2000. Their behaviors such as plastic hinges, joint's shear deformation, bond slip, and rebars' residual strain and stress due to previous loading are also implemented to the model. Although the lateral strength of the specimens are similar to their analytical model, the other behavior, especially their stiffness is not similar, therefore needing another parameter implemented in the model.

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Waste management for achieving sustainable management of water and sanitation in Universitas Sebelas Maret Indonesia 4

Waste management for achieving sustainable management of wat...

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4th International Workshop on UI GreenMetric World University Rankings, IWGM 2018

作者： Karsidi, Ravik Parama Astirin, Okid Astuti, Winny Rector Universitas Sebelas Maret Campus UNS Kentingan Surakarta Indonesia Department of Biology Faculty of Mathematics and Natural Science UNS Green Campus Team Universitas Sebelas Maret Indonesia Study Program of Urban and Regional Planning Faculty of Engineering UNS Green Campus Team Universitas Sebelas Maret Indonesia

Universitas Sebelas Maret (UNS) is the biggest university in Surakarta Central Java Indonesia, which was established on March 11th, 1976 through Presidential Decree No. 10 of 1976. Commitmen of UNS toward Green Campus began in 2012 by Rector Decree 7nd of August 2012. Land size of UNS, whis is only 60 ha becomes constraints in development of Green Campus Initiatives. In 2030 agenda of Sustainable Development Goals gives attention to huge increased of urbanization thus cities and human settlements face the problems of high density, economies of agglomeration link economy, energy, environment, science, technology and social and economic output [2]. The Problem of Water and Sanitation becomes big issues of Sustainable Development Goals (SDGs), which is stated in the Goal 6 out of 17 Goals. Goal 6 not only addresses Clean water sanitation and health but also quality and sustainability of water resources all over the world. Universitas Sebelas Maret is one of Campus in Indonesia, which has awareness toward water and sanitation, especially related to the problem of waste. Liquid waste has become problems for a long time in UNS, when domestic liquid waste has come from residential areas surrounding campus passed through the lake in campus before finally flowing to Bengawan Solo River. This causes euthropication and sedimentation of the lake of UNS, which had impact on extremelly decreased the function of the pond estetically and functionally. By partnership with the Ministry of Public Works anad Spatial Planning in 2017, UNS has built Integrated Waste Water Treatment, which treats domestic liquid waste from residential area surrounding campus and internal campus becomes recycled clean water. In spite of that, UNS also treats organic waste of fall leafs through composting units and manages chemical hazardous waste according to the Indonesian regulation issued by Ministry of Environment. Several efforts of UNS related to Waste Management have contribution to achieving SDGs e

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An econometric analysis of energy input in the agricultural sector and its impact on co2 emissions: a case of Indonesia

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IOP Conference Series: Materials Science and engineering 2019年第1期508卷

作者： Charles O.P. Marpaung Electrical Engineering Study Program Faculty of Engineering Universitas Kristen Indonesia Jalan Mayjen Sutoyo No. 2 Jakarta Indonesia

This study analyzes the impact of the energy input on the total production in the agricultural sector in Indonesia by using an econometric approach. Unlike in other studies, the total production in this study was measured in monetary unit (i.e., value added). The results show that if the energy input in the agricultural sector was increased by 1%, the agricultural productivity (the value added) would increase by 0.45%. This study also examines the factors which affect the total CO2 emissions due to the energy use in the sector by applying the extended Kaya model during 1990-2005. The results show that the value added was found to increase the total CO2 emissions during the periods of 1990-1995, 1996-2000, and 2001-2005. The energy intensity effect also contributed towards increasing CO2 emissions at each period except at the period of 2001 – 2005, while the contribution of the energy mix effect to the total CO2 emissions was neglible at all periods.

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Labelling of the Energetic Efficiency on a Case study in Passo Fundo, RS, Brazil, in Accordance with the Mentioned Methods under the Respective Brazilian Regulation-RTQ-C

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Journal of civil engineering and Architecture 2018年第5期12卷 355-361页

作者： Letiane Beninca Grace Tibério Cardoso Cristiana Rodrigues School of Civil Engineering of Meridional Faculty (IMED) Passo Fundo 99070-220 Brazil Postgraduate Program in Civil Engineering (PPGCI) of Federal University of Rio Grande do Sul (UFRGS) Porto Alegre Brazil School of Architecture of Barcelona Barcelona Tech Universitat Politècnica de Catalunya (UPC) Spain Postgraduate Program in Architecture and Urbanism (PPGARQ) Meridional Faculty (IMED) Passo Fundo 99070-220 Brazil Postgraduate Program in Civil Engineering (PPGEC) Meridional Faculty (IMED) Passo Fundo 99070-220 Brazil

Having as a starting point of the problematic energy consumption of buildings, it studied the panorama of energy efficiency, emphasizing the Brazilian program of the INMETRO （Instituto Nacional de Metrologia, Normalizacao e Qualidade Industrial）, PROCEL “Edifica” （national program for energy efficiency in buildings）, contained in the norm RTQ-C （technical requirements of the quality for the level of energetic efficiency of commercial, service, and public buildings）. For a better understanding of the regulation, it elected a building, emblematic in the city of Passo Fundo, RS, Brazil, illustrating the perspective of the program. The building was classified in accordance with the two methodologies presented by the program： prescriptive and simulation, so it was possible to investigate the peculiarities of each methodology and the own regulation. After the application of the methodologies, we came to the conclusion that the prescriptive method is less accurate and requires more dedication by the evaluator to do all the calculations and surveys required, however, it is the fastest tool and accessible to the field professionals. The simulation on the other hand, is a more accurate methodology and reaches levels of analysis that the prescriptive method does not reach, but still is a tool that needs large initial financial contribution and prior knowledge.

关键词： Energy efficiency labelling Brazilian regulation.

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The development of road evaluation and monitoring system using database application

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AIP Conference Proceedings 2019年第1期2114卷

作者： Bayu Setiawan Ary Setyawan Budi Yulianto 1Student of Civil Engineering Master Program Engineering Faculty Universitas Sebelas Maret Surakarta Central Java Indonesia 2Lecturer of Civil Engineering Master Program Engineering Faculty Universitas Sebelas Maret Surakarta Central Java Central Indonesia

Road infrastructure is one of a nation’s strategic assets. It accommodates the basic human needs to move from one place to another place in order to fulfill their needs. In Furthermore, to keep its optimum service level, this infrastructure requires a routine maintenance. In the present study, road geometric data, road distress type, road distress gps coordinates and cost estimation are integrated into one road maintenance database application. By doing data integration, the user can easily analyze the pavement maintenance strategies, and eventually this system database will give good contribution towards decision making process to achieve reliable road maintenance system and sustainable pavement. The observed road pavements were Joko Tingkir, Monginsidi, Ir. Juanda and Kyai Mojo—all of these are under the authority of Public Works Agency of Surakarta City Government. Relevant data were acquired by conducting field observation. The web database application is developed as a standalone extension from previously android-based application called Road Evaluation And Monitoring System (REMS). GPS coordinates, PCI index value derived from the calculation of distress type, distress area or volume and its deduct value were generated from REMS application. Distress type and severity was used to determine the maintenance method. Bina Marga’s standardized unit price indices and each road distress volume or area were used as base calculation to obtain final work unit price. The estimated maintenance cost for Joko Tingkir road is Rp28,087,654.29, Monginsidi road is Rp46,784,249.87, Ir. Juanda road is Rp266,780,014.78 and Kyai Mojo road is Rp76,584,885.27. All of the calculation results are displayed on the web-based interactive map layer, graph and tables for each of the observed roads. The table of road distress, maintenance and treatment recommendation are also displayed for detailed analysis.

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