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181	Engineering	ABS-147
User Interface Analysis and Design on Pamsimas Android Mobile Applications Using The Design Sprint Method Julius Galih Prima Negara (a*), Bekti Suratmanto (b) a) Department of Informatics, Universitas Atma Jaya Yogyakarta Jalan Babarsari No.43, Yogyakarta 55281, Indonesia *julius.galih[at]uajy.ac.id b) Business Process Enginering Laboratory, Department of Informatics, Universitas Atma Jaya Yogyakarta Jalan Babarsari No.43, Yogyakarta 55281, Indonesia Abstract This research is motivated by the need for a user interface (UI) in making the Pamsimas Tirta Kauripan android mobile application. Pamsimas Tirta Kauripan is one of the Genjahan Village government business entities in ensuring that the community receives clean water and drinking water. This analysis and design process is part of a large work of Pamsimas Business Process Reengineering. One of the stages in application design is the creation of a user interface. The purpose of UI creation or design is to help provide comfort when using navigation, interaction, and display components so that business processes are carried out properly. In addition, creating a user interface can help simplify and visualize the developing process. This study uses the design sprint method which consists of understanding, namely conducting interviews to suit the organization^s needs. The Sketch stage is making a low-fidelity design or wireframe. Decide on which there is storyboarding. Prototype by creating a high-fidelity design or user interface. Lastly, validate performs testing using the usability testing single ease question. After testing, the first task gets an average score of 6.5, the second task gets a score of 6.2, the third task gets a score of 6.0, the fourth task gets a score of 6.0, the fifth task gets a score of 6.7, and the sixth receives a score of 6.7. The score obtained means that the user interface results have a good level of convenience and fit Pamsimas needs. Keywords: User Interface, Mobile Applications, Design Sprint Share Link | Plain Format | Corresponding Author (Julius Galih Prima Negara)

182	Engineering	ABS-156
Tension Strength Between Steel Bars and Steel Bars with Drate Couplers Connection Eko Darma*, Jaka Muslim Nuranto, Fajar Prihesnanto Universitas Islam 45 Abstract Connection in reinforced concrete is unavoidedable due to limited length of steel. As known the maximum length of steel 12 metres and used for beams, columns, plates, foundations, etc. Sometimes several buildings use long spans between column to column for architecture causes longer steel needs.If spans are more than 12 metres the steels should be connected by welding, coupler drates, and other parts of connection. Coupler drates one of the most popular connection and it is easy to make connection between steels in the reinforcement concrete. This research aims to determine the behaviour of steels when they were tensioned at testing machine either full steel bar and connected steel bar by coupler drates. The testing was conducted at the materials laboratory the references for testing are Indonesian standards for testing materials like SNI - 2052 - 2017, SNI - 8389 - 2017 and SNI - 07 - 0408 - 1989. The type of steel bars for testing are drate steels of diameters 25 mm and 32 mm and the type of test is tensioning test. The results of testing for normal steel bar of D- 25 mm is 619.3 MPa and D-32 mm is 522.5 MPa respectively and steel bar with coupler drates for D- 25 mm is 428 MPa and D-32 mm is 522.5 MPa respectively. It means tension strength of D-25 mm coupler drates decreases 30.88 % and tension strength of D-32 mm decreases 17.84 % as compared with steel bars. Keywords: Steel bar- coupler drates- tension strength- reinforcement concrete. Share Link | Plain Format | Corresponding Author (Anita Setyowati Srie Gunarti)

183	Engineering	ABS-157
Study The Performance and Emissions of Deionized Water Fuel in Diesel Engine Daniel Aldebaran (a), Annisa Bhikuning (a)*, Muhammad Hafnan (b) (a)Mechanical Engineering Department, Faculty of Industrial Technology, Universitas Trisakti Jl. Kyai Tapa No.1 Grogol Jakarta 11440 * annisabhi[at]trisakti.ac.id (b) PT New Ecology Energy Indonesia Abstract The current situation of high prices of petroleum oil needs to be studied to find alternative fuels that can reduce some emissions. The use of biodiesel in a mixture of diesel fuel is an alternative to address the global crisis related to the depletion of petroleum reserves. Moreover, mixing biodiesel into diesel fuel can reduce some emissions such as CO, HC, and particulate matter. However, the NOx emissions are still high. The purpose of this study is to analyze the performance and emissions using diesel fuel with a mixture of deionized water (ratio 60:40) in comparison with Indonesian diesel fuel (B30). Test fuels are conducted in a diesel engine with different loads of idle, 36% and 68% with the engine rotation of 1500 rpm. The results show that mixing 40% deionized water with diesel fuel can reduce NOx emissions by 180 mg than diesel fuel at 68% load. Moreover, the specific fuel consumption can be down up to 3% more than diesel fuel. Therefore, deionized water fuel can be the solution to make better fuel properties, can reduce emissions, and be friendly to the environment. Keywords: Biodiesel- Emissions- Diesel Fuel- Deionized- Alternative Fuel Share Link | Plain Format | Corresponding Author (Annisa Bhikuning)

184	Engineering	ABS-159
Performance Evaluation of SPWM and SVPWM Inverter in FOC-based PMSM Drives Under Dynamic Speed and Load Disturbance Mentari Putri Jati (a*), Muhammad Rizani Rusli (b) a. Faculty of Engineering, Yogyakarta State University, Yogyakarta 55281 Indonesia mentariputrijati[at]uny.ac.id b. Teknik Elektro Industri, Politeknik Elektronika Negeri Surabaya, Surabaya, Jawa Timur 60111 Indonesia Abstract The article discusses the significance of high-performing Permanent Magnet Synchronous Motors (PMSM) in industries such as transportation, robotics, and industrial sectors due to their small size, high efficiency, and fast responsiveness. Field Oriented Control (FOC) is used in PMSM drives to achieve high-performance control of the motor by transforming three-phase AC currents and voltages into two orthogonal components. The article explains the two common Pulse Width Modulation (PWM) methods used in FOC PMSM drives: Sinusoidal PWM (SPWM) and Space Vector PWM (SVPWM). The paper evaluates the performance of FOC-based PMSM with inverter drives using SPWM and SVPWM under dynamic speed and load disturbance conditions to determine a reliable PWM inverter drive for PMSM FOC applications. Keywords: PMSM, FOC, SVPWM Share Link | Plain Format | Corresponding Author (Mentari Putri Jati)

185	Engineering	ABS-162
Bibliometric Review: Study of Engine Knocking in Fuels During 2013-2022 Jefa Danar Indra Wijaya (a), Annisa Bhikuning (a)*, Muhammad Hafnan (b) (a) Mechanical Engineering Department, Faculty of Industrial Technology Universitas Trisakti Jl. Kyai Tapa No.1, Grogol, Jakarta 11440 * annisabhi[at]trisakti.ac.id (b) PT New Ecologi Energi Indonesia Abstract The purpose of this study is to analyze and reviewing of bibliometric data analysis using The software VOSViewer. This study provides data analysis related study of the knocking engine in the year 2013 - 2022 with mapping by tools in the VOSViewer. The method was using qualitative description to describe bibliometric analysis by network visualization by defined keyword and topic. Eight groupings were categorized related to their published year. After grouping and shorting the information in the publication of the journal, it was discovered the total amount of articles published on the topic of the study of engine knocking in different fuels. The results show that data obtained on the topic of engine knocking was divided into 8 clusters and 326 terms. Each cluster has the same keyword, which is combustion. Journal Fuel has the highest citation of 108 in 2015 by Benjas et al-. Furthermore, this research is expected to be a source for researchers conducting research in the field of knocking engines and determining research themes. Therefore, the knocking on the engines can be eliminated and the engine can be used in long term. Keywords: Engine- Knocking- Fuels Share Link | Plain Format | Corresponding Author (Annisa Bhikuning)

186	Engineering	ABS-418
Spatial Segregation in Residential Areas in Bekasi, Case Study: the area around Puri Gading Housing Khalishah Ardya, Mohammad Ischak Department of Architecture, Universitas Trisakti, Jakarta, Indonesia Abstract Population growth and the increasingly high price of land in big cities such as Jakarta have resulted in developers choosing to build and sell housing in areas around Jakarta such as the city of Bekasi. The construction of planned housing estates has become a trigger for the growth of the city of Bekasi. This condition gave rise to spatial segregation with pre-existing native settlement. This research aims to identify forms of spatial segregation arising from the construction of planned housing with pre-existing unplanned settlements. The method used is descriptive qualitative, by studying the occurrence of segregation through observing the characteristics and use of open spaces and access roads. Data obtained through direct observation and supported by satellite data using Google Earth. The research finding is the occurrence of spatial segregation caused by the emergence of open spaces in the form of parks and access roads that are exclusively intended for planned settlements. The spatial segregation that occurs has implications for the gaps that arise between pre-existing native settlements and new settlements which have the potential for the emergence of social conflict. Keywords: urban growth- spatial segregation- planned settlement- unplanned settlement- open space Share Link | Plain Format | Corresponding Author (Rini Setiati)

187	Engineering	ABS-419
Prediction The Amount of Collected Waste using Deep Neural Network Maimunah Universitas Muhammadiyah Magelang Abstract The public health of residents has been affected by the increase in unhealthy waste management in cities of developing countries. Waste management has received extensive attention from the city government. The plan and design of a sustainable municipal waste management system requires accurate predictions of the solid waste generated and collected by municipal authorities in landfills. The TPA in Magelang City receives waste collection from several waste suppliers which is weighed and recorded every day. Based on the existing data, the addition of the amount of waste does not decrease, so a method is needed to handle the amount of waste so that it can be managed properly. The main objective of this study is to develop an accurate prediction model for the amount of waste in landfills. Machine learning algorithm is applied to build the model. A data pre-processing and integration framework was developed in Python computing software to generate datasets with sufficient quantity and quality of data for modelling. The results show that the neural network algorithm has been successfully used to produce a predictive model for the amount of waste in landfills, both on a daily basis and as a whole. Prediction performance was measured using RMSE and MAPE. Keywords: Waste Collection,Prediction,Deep Learning Share Link | Plain Format | Corresponding Author (Maimunah Maimunah)

188	Engineering	ABS-420
Fuzzy-based approach to evaluate experience of online learning systems Muhammad Iqbal Al Gozhali, Endah Ratna Arumi, Agus Setiawan Informatics Engineering, Universitas Muhammadiyah Magelang Abstract The development of learning that is currently in the learning process has become one of the needs that support teaching and learning activities. Features that support the improvement of e-learning are important, because these learning aids are strongly supported by computer technology and internet networks that allow learning content to be accessed without distance and time limitations, both visually and verbally in conveying this information. One of the efforts that can be made to evaluate the quality of a lesson is to use an evaluation step. By knowing the level of effectiveness, efficiency and satisfaction of a learning media, it will make it easier for managers to carry out development for the future. The most obvious finding that emerged from this research is that the application of the fuzzy method can not only evaluate students^ experiences when using e-learning, but can also support teacher activities in class and help students develop independent learning processes, the variables used in evaluating. Overall, while more than 90% of studies report the positive impact of using fuzzy methods to improve student performance assessments, the effectiveness of this method cannot be ruled out. Keywords: learning process, artificial intelligence, teaching Share Link | Plain Format | Corresponding Author (Endah Ratna Arumi)

189	Engineering	ABS-165
High Performance Oven for Coconut Shell Charcoal Drying Andreas Prasetyadi (a*), Wibowo Kusbandono (a) a) Mechanical Engineering Department, Sanata Dharma University Paingan, Maguwoharjo, Depok, Sleman, DIY, Indonesia *pras[at]usd.ac.id Abstract Coconut shell charcoal briquetting usually applies thermal drying. LPG, CNG, and biomass are the common fuel for heating. Fuel price is significant for production cost in addition to raw material. An alternative approach for briquetting process using refrigerated drying was proposed. The research aimed to measure the oven performance applying refrigerated drying and its time for removing moist of the briquette. An experiment of drying 132 kg briquette was conducted in an oven of 197.5 cm x 100 cm x 112 cm dimension. The briquettes were cubes of 2.5 cm x 2.5 cm x 2.5 cm and had been aerated for 2 hours. The refrigerated drying machine has capacity of 715 W and the drying was performed in closed loop air method. It was recorded that the COP machine was 12.20 in average. The process needed 59 hours for drying. Keywords: Refrigerated Drying, Coconut Shell Charcoal, Briquette Share Link | Plain Format | Corresponding Author (Andreas Prasetyadi)

190	Engineering	ABS-166
Performance in Diesel Dual Fuel Engines Use Biodiesel And Hydrogen Gas Kuntang Winangun1,2, Atok Setiyawan1, Ghulam Asrofi Buntoro3, Bambang Sudarmanta1)* 1Department of Mechanical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia 2Department of Mechanical Engineering, Faculty of Engineering Universitas Muhammadiyah Ponorogo, Ponorogo, Indonesia 3Department of Informatics Engineering, Faculty of Engineering, Universitas Muhammadiyah Ponorogo, Ponorogo, Indonesia Abstract The use of biodiesel in compression ignition engines results in decreased power and thermal efficiency due to biodiesel^s poor heating value. The advent of hydrogen gas with a high calorific value can help alleviate the biodiesel shortage. To blend the two fuels, Diesel Dual Fuel (DDF) technology is required. This research intends to investigate the performance and emissions of diesel engines powered by a mixture of biodiesel and hydrogen gas. The experimental method was conducted on a single-cylinder diesel engine operating with constant speed at 1000-4000 watt engine load. Hydrogen gas is injected into the intake manifold along with incoming air with flow variations ranging from 2.5, 5, 7.5, and 10 LPM. The testing results indicate that the inclusion of hydrogen gas can boost thermal efficiency, power, and torque by 40.34%, 2.41%, and 2.4%, respectively, as compared to biodiesel with a single fuel source. In addition to cutting fuel consumption and smoke by 85.71% and 70.55% respectively. The findings of the experiments indicate that the utilization of a diesel dual fuel system in diesel engines that are powered by a combination of biodiesel and hydrogen gas has a favorable impact on the enhancement of engine performance as well as the reduction of exhaust pollutants. Keywords: Diesel Dual Fuel- Performance- Emission- Biodiesel- Hydrogen gase Share Link | Plain Format | Corresponding Author (Kuntang Winangun)

191	Engineering	ABS-171
Preliminary Studies of Hydro Power Plant using Laboratory-Scale Pelton Turbine: Speed-Variable Controlled and Their Effect on Electrical Power Muhamad Taufik Ulhakim (a), Sukarman (a,b*),Muhamad Rifqi Putra Syah (a), Ghazi Tikamori (a), Khoirudin (a), Amir (a), Budi Kristiawan (b) Ade Suhara (c) a)Department of Mechanical Engineering, Faculty of Engineering, Universitas Buana Perjuangan, Karawang, Indonesia b)Department of Mechanical Engineering, Faculty of Engineering, Sebelas Maret University, Surakarta, Indonesia b)Department of Industrial Engineering, Faculty of Engineering, Universitas Buana Perjuangan, Karawang, Indonesia Abstract Keywords: Hydro Power Plant- Laboratory-scale Pelton Turbine- Electrical Power Share Link | Plain Format | Corresponding Author (SUKARMAN SUKARMAN)

192	Engineering	ABS-429
High-Efficiency Waste Heating Devices Without Electrical Energy Nofa Ardhana1, Annisa Sholiah1, Bambang Pujiarto2, Bagiyo Condro Purnomo2, Barkah Susanto3, Budi Waluyo2ease Just Try to Submit This Sample Abstract 1 Student of Automotive Department, Engineering Faculty Universitas Muhammadiyah Magelang 2 Engineering Faculty of Universitas Muhammadiyah Magelang 3 Economic and Business Faculty of Universitas Muhammadiyah Magelang Abstract In Indonesia, Oil waste utilization was still very limited. The purpose of this research is to develop energy-efficient broiler heating device technology products using waste vehicle oil without using an electric blower. Carbon monoxide produced by burning waste oil is passed through a funnel with the resulting fire. Water vapor which produce from waste oil burn was sprayed at the base of the funnel to attract the fire. Carbon monoxide and water vapor have the potential to produce hydrogen and carbon dioxide. The hydrogen produced will increase energy produced from heating device. The result of this study is that water vapor produced from waste oil-fired boilers is able to properly replace the function of an electric blower. The water vapor that is sprayed at the base of the funnel also functions to multiply the energy (heat) produced by the heater, because the water vapor molecules that get high heat energy will turn into hydrogen ions and oxygen ions (plasma phase). Keywords: Oil Waste- broiler heating device- energy-efficient Share Link | Plain Format | Corresponding Author (Budi Waluyo)

193	Engineering	ABS-174
Measurement of Diesel Fuel Volume Using a Smart Device for Heavy Equipment Units Hidayat Hidayat (a*), Andi Amijoyo Mochtar (b), Sudarsono Sudarsono (c), MF Andrijasa (d) a) Department of Mechancal Engineering, Politeknik Negeri Samarinda, Jl. Ciptomangunkusumo, Samarinda, 75131, Indonesia *hidayat[at]polnes.ac.id b) Department of Mechanical Engineering, Hasanuddin University, Jl. Poros Malino km 6, Gowa, 92171, Indonesia. c) Department of Mechanical Engineering, Halu Oleo University, Kendari, Indonesia d) Department of Information Technology, Politeknik Negeri Samarinda, Jl. Ciptomangunkusumo, Samarinda, 75131, Indonesia Abstract One of the most important parts of running a heavy equipment firm is the high cost of fuel. Businesses that operate heavy machinery suffer losses as a result of the existence of individuals who commit fraud by providing false information regarding the fuel volume. The purpose of this study is to develop a device that can measure the amount of fuel added to a tank so that the company owner may obtain the information instantly. This device uses a variety of simple components, including an ESP32 microcontroller and a flow meter sensor. Information on fuel quantity is available online and on SD Cards. By using this technology, the corporation may reduce losses brought on by people who modify fuel volume. Keywords: microcontroller- heavy equipment- diesel fuel- smart device Share Link | Plain Format | Corresponding Author (Hidayat Hidayat)

194	Engineering	ABS-438
Crude Oil Polluted Soil Bioremediation Through Microbe Activity Utilization Sharfina Nadhilah, Astri Rinanti*, Riana Ayu Kusumadewi, Melati Ferianita Fachrul, Astari Minarti, Sarah Aphirta, Lutfia Rahmiyati, Sheilla Megagupita Putri Marendra, Thalia Sunaryo Environmental Engineering Study Program, Faculty of Landscape Architecture and Environmental Technology, Universitas Trisakti, Jakarta, Indonesia Abstract Environmental pollution by crude oil has become a serious problem all over the world with high level of oil spillage or leaks comes from damaged crude oil piping, tankers storage, offshore drilling, and illegal oil waste dumping cases. The objective of this research is to study crude oil polluted land recovery process with biotechnological approach. Technology to safely remove oil pollutant in the environment is bioremediation due to its low cost, high efficiency level, environmentally friendly, and sustainability. Three isolate bacteria namely Pseudomonas sp., Pseudomonas xanthomarina, and Arthrobacter nitroguajacolicus were utilized as bioremediation agents to perform land remediation with biostimulation-bioaugmentation (BS-BA) approach. After 25 days, 31,000 mg/kg of Total Petroleum Hydrocarbon (TPH) was decreased into 90-10000 mg/kg or equal to 67.7% to 99.70%. We also detected 14,000 mg/kg decrease of Polycyclic Aromatic Hydrocarbon (PAH) into 8 to 40 mg/kg with detection limit of 99.94% to % in just 5-10 days. TPH removal kinetic calculation by using Pseudomonas xanthomarina bacteria resulted YT, Kd, Yobs, and Ks respectively at 0.002/hour, 0.001/hour, 0.0361/hour, and 0.0002/hour, by using order 2 formula with regression value of 0.9482. We recommend conducting land farming processing which consists of 2 beds with volumes of 55 m3/bed in order to remediate 159 ton of crude oil polluted soil by utilizing 9.6 L of hydrocarbonoclastic bacteria for 3723 hours. Based on the findings, we concluded that bioremediation is available on crude oil polluted soil. Keywords: Bioremediation, Biostimulation-Bioaugmentation, Crude Oil, Crude Oil Tank Bottom Sludge (COTBS), Hydrocarbonoclastic Bacteria Share Link | Plain Format | Corresponding Author (Dr. Rini Setiati, MT, IPM)

195	Engineering	ABS-439
Cadmium Heavy Metal Removal in Water by Microalgae Sorption Activity Sinthya Desty Rahmadhania, Astri Rinanti*, Melati Ferianita Fachrul, Astari Minarti, Sarah Aphirta, Lutfia Rahmiyati, Sheilla Megagupita Putri Marendra, Thalia Sunaryo Environmental Engineering Study Program, Faculty of Landscape Architecture and Environmental Technology, Universitas Trisakti, Jakarta, Indonesia Abstract Industrial waste that contains Cadmium (Cd) heavy metal can cause environmental problem because Cadmium is toxic, persistent, and can easily accumulated in the environment. Biosorption process is highly influenced by temperature, pH, light, initial metal ion concentration, microalgae biomass concentration, microalgae characteristics, contact time, and surface area ratio against total surface area. This literature study is focused on the effectiveness of temperature and contact time on Cd (II) biosorption process by Chlorella sp. mobile as biosorbent. Chlorella sp. microalgae possess functional groups that are able to react with metal ion in a solution, which makes it exploitable to overcome environmental pollution caused by heavy metal exposure. Chlorella sp. is cultivated on a controlled environment, inside a batch reactor filled with wastes that contain Cd (II) with BBM (Bolds Basal Medium) as growth media. Optimalization of heavy metal removal is conducted with a batch system filled with solution that contains 50 mg/L of Cadmium heavy metal (Cd), 1.53 g/L of biosorbent, pH level of 6.5 with observed temperature levels of 10, 27, and 35&#8451- and contact times of 15, 45, and 60 minutes. The analysis was conducted by using Atomic Absorption Spectroscopy (AAS), Fourier Transform Infra-Red (FTIR), and Scanning Electron Microscope (SEM). Research results revealed that the highest and the lowest removal rates are at 50 mg/L Cd (II) by 1.53 gr/L of Chlorella sp. microalgae on pH level of 6.5 respectively happens on 35&#8451- and 10&#8451- temperatures with removal efficiency between 60% to 100%. Freundlich^s Isotherm formula and two reaction orders are used to remove Cadmium (Cd) heavy metal by Chlorella sp. microalgae with linear regression coefficient value (R2) close to 1. The implementation of Cadmium Cd (II) heavy metal removal by Chlorella sp. microalgae on a pilot scale with 80 L of volume and 50 mg/L of concentration into 0.05 mg/L requires biosorbent mass of 5,123.08 gr and detention time of 2.52 hours. This literature study has provided us information that biosorption can be utilized as alternative technology to overcome Cadmium heavy metal in water. Keywords: Cadmium (Cd), Biosorption, Chlorella sp. Microalgae, Function groups Share Link | Plain Format | Corresponding Author (Dr. Rini Setiati, MT, IPM)

196	Engineering	ABS-440
Dichloro Diphenyl Trichloroethane (DDT) Insecticide Polluted Soil Remediation by Bacteria Consortium with Co-Substrate Utilization Almeira Putri Adefia, Astri Rinanti*, Melati Ferianita Fachrul, Astari Minarti, Sarah Aphirta, Lutfia Rahmiyati, Sheilla Megagupita Putri Marendra, Thalia Sunaryo Environmental Engineering Study Program, Faculty of Landscape Architecture and Environmental Technology, Universitas Trisakti, Jakarta, Indonesia Abstract Dichloro Diphenyl Trichloroethane (DDT) is an organochlorine insecticide that are largely used on agriculture and health sectors. DDT is an organic pollutant that are difficult to be dissolved and tend to survive in the environment for a long time because it is highly stable and persistent. DDT insecticide residue is still discovered in the soil even though its utilization has been stopped years ago and still negatively impacting human life and the environment through bio accumulation and bio magnification. Bioremediation is a potential method to remove recalcitrance compound such as DDT. The objective of this study is to gather and analyze information on DDT degradation by bacteria consortium with co-substrate addition. Pseudomonas putida and Pseudomonas stutzeri bacteria consortium were utilized to remediate DDT with glucose, sucrose, and yeast extract as co-substrates. During 72 hours of observation, the three co-substrates namely yeast extract, glucose, and sucrose are able to degrade 75%, 56% and 39.55% of 10 ppm DDT. Yeast is the most ideal co-substrate to assist bacteria consortium growth and to degrade DDT. The implementation of pilot scale land treatment bioremediation is planned to be at 50m3, with dimension of 20m length, 5m wide, and 0.5m high. The efficiency of the removal reached 90% with 67 hours of detention time. Keywords: insecticide, organochlorine, DDT, bioremediation, co-substrate, Pseudomonas Share Link | Plain Format | Corresponding Author (Dr. Rini Setiati, MT, IPM)

197	Engineering	ABS-185
A New Method Of Controlling Inlet Water Flow Rate In Solar Energy Water Distillation FA. Rusdi Sambada(a*), I Gusti Ketut Puja (a) a) Department of Mechanical Engineering, Faculty of Science and Technology, Sanata Dharma University Campus III Paingan Maguwoharjo Depok Sleman Yogyakarta Indonesia 55282 *sambada[at]usd.ac.id Abstract Only some water can evaporate in the distillation process using wick-type solar energy. The more water that does not evaporate, the lower the distillation efficiency. A faucet generally uses for controls the inlet water flow rate. However, the faucet causes a significant flow rate. The greater the inlet water flow rate, the more water does not evaporate. This study examines a new method of controlling the flow rate of inlet water in wick-type solar energy water distillation using the principle of communicating vessels. The research was carried out experimentally in the laboratory using six infrared lamps as solar energy simulators. The distillation model used was 0.5 m2 in size and 3 mm thick cover glass. The inlet water flow rate was varied by 3.6, 4.8 and 7.7 litres/hour. The results showed that the inlet water flow method using the communicating vessels principle could increase the efficiency of solar energy water distillation compared to controlling the flow rate of distillation inlet water using a faucet. The highest efficiency increase of 61 per cent was obtained at a variation of the inlet water flow rate of 4.8 litres/hour. The method of controlling incoming water flow rate using the principle of communicating vessels can be used to increase the production of distilled water to meet the need for potable water from contaminated water, especially for people in remote areas. Keywords: inlet water- flow rate- efficiency- communicating vessels Share Link | Plain Format | Corresponding Author (FA. Rusdi Sambada)

198	Engineering	ABS-441
Total Petroleum Hydrocarbon Removal in Crude Oil through Land Farming Bioremediation by Brevibacterium casei and Pseudomonas aeruginosa Bacteria Tasya Terry Putri Hendrotomo, Astri Rinanti*, Ratnaningsih Ruhiyat, Melati Ferianita Fachrul, Astari Minarti, Sarah Aphirta, Lutfia Rahmiyati, Sheilla Megagupita Putri Marendra, Thalia Sunaryo Environmental Engineering Study Program, Faculty of Landscape Architecture and Environmental Technology, Universitas Trisakti, Jakarta, Indonesia Abstract Crude oil exploitation activity has the potential to bring negative impact on the environment and the ecosystem because as hazardous and toxic waste, it can cause pollutions in soil, groundwater, and/or surface water. The objective of this environmental biotechnology literature study is to study enzymatic ability of Brevibacterium casei and Pseudomonas aeruginosa as hydrocarbonoclastic bacteria to utilize hydrocarbon contained by crude oil as nutrient to overcome environmental pollution due to crude oil waste exposure. Brevibacterium casei and Pseudomonas aeruginosa bacteria were grown in a Minimal Salts Media (MSM) as growth media, which contains micro and macro nutrients without carbon source. After that, crude oil polluted soil sample was added on a sterile condition and inserted into a reactor batch. Sampling was conducted every day until this research was finished. Total Petroleum Hydrocarbon (TPH) is measured with a Gas Chromatography (GC). Crude oil removal efficiency is shown by TPH removal percentage during the research. Both type of bacteria is working optimally on 30-35 C and optimum level of pH is between 7.0-8.0 to degrade polluted soil sample of 69% up to more than 76.2%. On pilot scale implementation, land farming method with 500 m3 of volume requires 972 litres of bacteria with detention time of between 18 to 23 days. This literature study regarding crude oil bioremediation has provided an environmentally solution to overcome crude oil pollution on soil. Keywords: Crude oil, hydrocarbon, bioremediation, bioaugmentation, hydrocarbonoclastic bacteria, Pseudomonas sp., Brevibacterium sp Share Link | Plain Format | Corresponding Author (Dr. Rini Setiati, MT, IPM)

199	Engineering	ABS-442
Land Treatment Polystyrene Bioremediation by Pseudomonas Aeruginosa Bacteria A Agustria, M F Fachrul, Tazkiaturrizki, and A Rinanti Environmental Engineering Study Program, Faculty of Landscape Architecture and Environmental Engineering, Universitas Trisakti, Jakarta, Indonesia Abstract Products made from plastic material are commonly found in our life. Polystyrene is a type of plastic synthesises. In the nature, polystyrene is known to be recalcitrant due to its complex structural molecule. Number of studies reported that the existence of polystyrene plastic presents various threats for sea animals such as zebra fish, sea urchin^s early development gene, and lowered crustaceans^ life expectancy. This literature study was conducted by collecting various information on polystyrene pollution in the environment and the ability of Pseudomonas aeruginosa bacteria to degrade polystyrene. Pseudomonas aeruginosa (1 x 108 cell/ml) bacteria was cultured in 25 ml liquid carbon-free basal medium and 1 gram polystyrene on 25oC temperature for 15 days. The result shows that the compound was able to degrade 0.098% of polystyrene per day with yield constant of 1,111,111.11. This literature study will be continued on pilot scale by conducting experiment of polystyrene biodegradation on an area that is previously added with liquid carbon-free basal medium by land treatment method with dimensional size of 3m x 1.5m x 0.3m with additional 1.35 m3 LFCBM (liquid carbon-free basal medium). Keywords: plastic, polystyrene, land treatment, bioremediation, biodegradation, Pseudomonas aeruginosa Share Link | Plain Format | Corresponding Author (Dr. Rini Setiati, MT, IPM)

200	Engineering	ABS-190
Influence of Filler Concentration on Mechanical and Thermal Properties of Whey Protein Isolate/Silica Biocomposite Film Ika Zuwanna (a), Medyan Riza (b*), Sri Aprilia (b), Yanna Syamsuddin (b) a) Doctoral Program, School of Engineering, Post Graduate Program, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia b) Department of Chemical Engineering, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia *medyan_riza[at]unsyiah.ac.ad Abstract During current history, biocomposite materials made from natural and renewable resources have attracted substantial attention due to growing awareness and demand for ecologically friendly solutions. In this study, different amounts of silica (SiO2) from rice husk ash (RHA) were added to whey protein isolate (WPI) (0, 1, 3, 5, and 7% w/w). The mechanical properties (tensile strength, elongation at break), thermal properties (thermogravimetric), and morphology (scanning electron microscopy) of the WPI/SiO2 biocomposite films were assessed. The results indicate that the mechanical strength ranges from 5.19 to 18.63 MPA, while the elongation ranges from 20.97 to 50.57%. At three temperature ranges, namely 38 to 50 C, 106 to 130 C, and 172 to 192 C, weight loss was seen. In addition, incorporation of SiO2 caused the morphology of the biocomposite film to become granular, more heterogeneous, and comprised of small particle aggregates. SiO2 filler has the potential to be employed in biocomposite films and can be utilized in a variety of food packaging applications. Keywords: biocomposite- whey protein isolate- silica- mechanical properties- thermal properties Share Link | Plain Format | Corresponding Author (Medyan Riza)

201	Engineering	ABS-448
History and Development of Car Rental System Muhammad Iqbal Al Ghozali, Agus Setiawan, Endah Ratna Arumi Informatics Department, Universitas Muhammadiyah Magelang, Magelang, Indonesia Abstract The rental car market has grown significantly, but there have been some bumps along the way. Demand for leisure and business air travel declined as a result of the economic crisis that began in 2008, which reduced consumer and corporate discretionary spending. As a result, the car rental industry^s annual revenues declined from -30 billion in 2006 to -24.5 billion in 2009. The target market for the rental car business is also quite broad, even very diverse. Not only for rent to individuals, but this car rental business can also be run in many ways, including by renting it directly to companies. This one business is also a business that is easy to manage, it can even be run at home. Advances in technology have made it possible for the car rental business to be managed and monitored easily, so that unwanted risks and problems can be minimized properly. Keywords: car rental, information system, system Share Link | Plain Format | Corresponding Author (Agus Setiawan)

202	Engineering	ABS-202
A Review on Real Driving Cycle-Based State of Charge Prediction for EV Batteries Ikhsan Romli, Bermawi Priyatna Iskandar 1 Teknik dan Manajemen Industri, Fakultas Teknologi Industri, Institut Teknologi Bandung, Indonesia, 2 Teknik Industri, Fakultas Teknik, Universitas Pelita Bangsa, Indonesia Abstract Research on performance of Electric Vehicle is very important, especially in driving range of a Battery Electric Vehicle (BEV) that requires precise State of Charge (SoC) predictions. The battery SoC is an important parameter that reflects the performance of the battery. Meanwhile, the battery has varying time properties depending on real conditions when driving. It has a logical relationship in a strong non-linear form that makes it very complex. Therefore, SoC prediction based on the Real Driving Cycle (RDC) can accurately protect the battery, save energy, increase battery life, prevent overcharging or discharging, and also enable applications to make rational control strategies to achieve goals with a certain range. This paper provides a literature review of various papers that are relevant and related to SoC prediction method for BEVs based on RDC. This paper summarizes the approaches used in Li-ion battery SoC prediction. Three approaches are classified accordingly, i.e. model-based approach, data-driven approach and hybrid approach. The results achieved imply that data-driven models, especially machine learning methods have the best accuracy. Based on the assessment of the various SOC prediction methods reviewed, the key issues and direction of developing SOC prediction in the future trend are also discussed. Keywords: State of charge- real driving- prediction Share Link | Plain Format | Corresponding Author (Ikhsan Romli)

203	Engineering	ABS-212
Game Knowledge Model Development Indonesian Traditional Approach On-To-Knowledge Tukino 1,a*) , Baenil Huda2,b), Agus Hananto3,c) Hendry 4,d) , Eko Sediyono 5,e), Saepul Aripiyanto6,f) Universitas Buana Perjuangan Karawang Abstract Abstract. Traditional games are a form of play that reflects the customs of a tribe which are passed to the next generation. Traditional games have a philosophical meaning implied in each game and are also very fun. From the point of view of benefits, traditional games played by children are able to stimulate motoric, cognitive development and can build self-confidence, train concentration, build friendships and work together with others. In carrying out traditional games can be done without using tools or by using tools. The use of traditional game aids can be made from materials found in nature, such as wood, bamboo, paper, thread or objects found around them and without the high cost. Types of traditional games that use tools are kites, dakon, stilts and others, while types of games that do not use tools are applause, hompimpa, cublak-cublak suweng and others. Along with the development of technology, traditional games are slowly being abandoned and turning to modern games with information technology. In order to preserve traditional game culture so that it does not become extinct, information related to traditional games is digitized using the semantic web. Implementation of the semantic web is used to build a model capable of processing large data and making it easy to access information. Traditional games are spread throughout the archipelago in various forms and types. This requires knowledge to manage traditional Indonesian games in the form of OWL. Building traditional game ontology knowledge using the On-To-Knowledge methodology with 5 stages namely Feasibility study, kick off, refinement, evaluation, maintenance. The Ontology model can present information in a structured and systematic manner which can facilitate the search process more easily. The traditional game ontology model has six main classes, namely game type, game name, player type, toy material, toy form, how to play, winner. The evaluation results of the ontology model using the HermiT reasone Keywords: Tradisional Games, Ontology, On-To-Knowledge, OWL Share Link | Plain Format | Corresponding Author (tukino tukino)

204	Engineering	ABS-213
Microstructure And Mechanical Properties Of Friction Stir Welding On Aluminum AA1100 With Tool Pin Profile Paramater Nur Kholis (a), Helmy Purwanto (a*), Darmanto (a), Muhammad Faiz Fadhlillah (a) a) Department of Mechanical Engineering , Faculty of Engineering, Universitas Wahid Hasyim, Semarang, Indonesia *) helmypurwanto[at]unwahas.ac.id Abstract Friction Stir welding pin tool profile is very influential on the welding results. The profile of the pin tool is one of the important factors that affect the results of the weld, such as results on the microstructure and mechanical properties of the welded joints (nuggets). This study aims to analyze the effect of the tool pin profile on the friction stir welding of aluminum AA1100 on the microstructure and mechanical properties. The FSW process uses a Universal Milling Machine. Observation of macro photos using a USB Digital Microscope and observations of microstructure using optical metallography. Tensile testing using the Universal Testing Machine. The microstructure of the weld nugget which shows smooth and tight results occurs in FSW using the Threaded pin tool profile, the result is due to the even threaded pin stir and dynamic recrystallization. The maximum tensile strength results occur in the pin tool threaded with a value of 88,037 Mpa.Aluminum material is widely needed in the industrial world, but still has problems with its weldability, so it requires the right welding method. FSW can join aluminum materials with good weldability results. Welding in industries engaged in transportation, shipping, railroads, automotive, and construction. Keywords: Friction Stir Welding, Microstructure, Tensile Strees Share Link | Plain Format | Corresponding Author (Nur Kholis)

205	Engineering	ABS-216
A numerical study of Al2O3 -TiO2 hybrid nanofluid on radiator performance Najmul Hidayat, Dr. Ir. Sudarmadji, M.T. Politeknik Negeri Malang Abstract The development of technology today could produce particle sized nano material for metal or nonmetal materials in industrial scale with relatively cheap price. Fluid coolant like pure water, oil or ethylene glycol engineered to becomes nanofluid with size below 100 nm. Particle nano have unique thermal, mechanical, optical, electrical and magnetic properties. Particle nano in low concentration dispersed and suspended on fluid coolant could raise thermal fluid the many times fold. On developing new correlations for the thermophysical properties of nanofluids and then applying them in numerical modeling to determine heat transfer coefficient and friction loss. The purpose of this study was to compare the results of CFD to tests on the effect of concentration, discharge and inlet temperature of Hybrid Nanofluid Al2O3 TiO2 to temperature distribution, pressure and radiator performance. The method used in this research is CFD simulation. The data taken in this study is the rate of heat transfer in the cooling fluid of pure radiator coolant and radiator coolant plus Al2O3 TiO2 hybrid nanoparticles (hybrid nanofluid radiator coolant) with a mass percentage nanoparticle hybrid mixture of 0.25, 0.30, 0.35 percent. Variations in the amount of fluid flow with a liter/ minute discharge (LPM) of 20, 24,28, and using variations in the amount of radiator fluid inlet temperature (Tin), namely 70, 80, 90 celsius which will be simulated by ANSYS FLUENT software. The smallest error of outlet temperature CFD simulation to experiment is 0.37 percent at Tin 70 celsius, mass concentration of 0.2 percent at 20 LPM discharge and the highest error is 2.96 percent at Tin 90 celsius pure coolant without nanoparticle with a discharge of 28 LPM. Minimum error of overall heat transfer coefficient is -0.39 percent Tin 70 celsius, mass concentration 0.25 percent at 20 LPM discharge and maximum error is -2.45 percen at Tin 90 celsius, pure coolant without nano particle with a discharge of 28 LPM. Keywords: Hybrid-nanofluid, radiator, CFD. Share Link | Plain Format | Corresponding Author (Najmul Hidayat)

206	Engineering	ABS-232
Analysis of Maggot Nutrition in Various Farming Periods and Organic Wastes as a Growth Medium Gina Lova Sari(a*), Linda Riski Sefrina(b), Rizal Hanifi(c), Sethiavi Rizki(a), Ayya Sophia Samad(a) a Study Program of Environmental Engineering, Faculty of Engineering, Universitas Singaperbangsa Karawang, Karawang, Indonesia b Study Program of Nutrition, Faculty of Health, Universitas Singaperbangsa Karawang c Study Program of Mechanical Engineering, Faculty of Engineering, Universitas Singaperbangsa Karawang Abstract Undoubtedly, the bioconversion of organic waste into maggots is an innovation to reduce organic waste generation. Nonetheless, maggot cultivators only use available organic waste as feed, without adjustments, which makes the nutritional value of maggot produced inconsistent. The current study aims to determine appropriate organic waste and farming periods based on the nutritional value of maggots. This research was conducted using a field-scale experimental method for 21 days. A total of 9 experimental variations of organic waste type and farming period were observed, i.e., kitchen waste, rotten vegetables, and a mixture of both (50:50, w/w) for 7, 14, and 21 days of farming, respectively. The results showed that the appropriate organic waste for maggot farming is kitchen waste, with a farming period of 14 days. During the 14-day farming process, maggot weight increased 1,750 times to 3,500 grams, with protein and fat content of 38.28% and 28.47%, respectively. The protein content in maggot meets the minimum requirements for fish and poultry use as an alternative feed. Keywords: Organic waste bioconversion- maggot- nutritional value- organic waste Share Link | Plain Format | Corresponding Author (Gina Lova Sari)

207	Engineering	ABS-236
Prototype of Battery Monitoring System for Gasoline Vehicle using Microcontroller Module Heru Supriyono1, Raden Adrian Rafli Prasetyo 1, Adi Sasono1, Mahmud Iwan Solihin2 1 Department of Electrical Engineering, Faculty of Engineering, Universitas Muhammadiyah Surakarta, Surakarta, Indonesia 2 Department of Mechanical Engineering, Faculty of Engineering, UCSI University, Kuala Lumpur, Malaysia Abstract The condition of the battery in the gasoline vehicle is very important to know because if the condition of the battery has decreased or is not good then it would not be able to start the car engine in the initial ignition phase. The objective of this research is to obtain a battery condition monitoring system on a gasoline car by using a microcontroller based system. The monitoring system was developed by using research and development method and employing off the shelf components available in the market. The obtained monitoring system was tested on a laboratory scale as well as on an actual gasoline car battery. Laboratory-based and actual environment test results showed that the system was able to measure temperature and voltage well, which has an average difference of 1.058% and 1.010814787% when compared to the measurement results using a commercial thermometer and voltmeter respectively. The system worked stable without any drastic results change. The obtained system could be useful for automotive and transportation areas where the driver will be able to know the battery condition continuously for daily usage and preventif maintenance. Keywords: Battery monitoring- battery condition- onitoring system- microcontroller- voltage monitoring Share Link | Plain Format | Corresponding Author (Heru Supriyono)

208	Engineering	ABS-244
Inspection Scheduling Decision Model at CNG Charging Station Using Risk Based Inspection (RBI) Method Eko Muh Widodo1, 3, a), Suroto Munahar2, 4, b) and Naufal Ammar Zada1, c) 1Department of Industrial Engineering, Universitas Muhammadiyah Magelang, Indonesia 2Departement of Automotive, Universitas Muhammadiyah Magelang, Indonesia 3Center for Sustainable Intellegent Circular Economy, Universitas Muhammadiyah Magelang, Indonesia 4Center of Energy for Society and Industry, Universitas Muhammadiyah Magelang, Indonesia Abstract Most of the transportation industry is still dependent on fossil fuels. The use of fuel oil in the transportation industry has a negative impact on environmental pollution because fuel oil contains CO2. With the increasing use of fuel oil and environmental pollution problems, Compressed Natural Gas (CNG) is now being developed in the transportation industry. When compared to fuel oils such as gasoline, diesel, and Liquified Petroleum Gas (LPG), CNG emits less harmful gas during combustion. CNG distribution requires a storage device, namely a buffer storage tank which is a closed vessel to accommodate liquids and gases with different temperatures and pressures according to environmental conditions. Buffer storage tanks have a very large risk of accidents including leaks that pose a hazard of fire, explosion, and environmental pollution, which has an impact on technical and financial aspects. Seeing the risks posed by the buffer storage tank, it is necessary to take precautions, inspections, and maintenance to minimize the risk of accidents. This research plan proposes a calculation model using a tool developed based on the RBI method with the API 581 standard in analysing the level of risk of leakage and the economic consequences of CNG buffer storage tanks. This research is expected to be able to produce an appropriate inspection scheduling decision model for CNG buffer storage tanks and recommendations for preventive actions based on leakage risk and financial aspects. Keywords: Buffer Storage Tank, RBI, CNG, Economic Consequence, Leakage Consequence Share Link | Plain Format | Corresponding Author (Eko Muh Widodo)

209	Engineering	ABS-245
Digital Scales Based On Arduino Uno for Parents and Children via android and PC applications Tri Hannanto Saputra, Fenty Pandansari, FX. Suryadi Politeknik ATMI Surakarta Abstract Weighing children using digital scales children are often faced with quite difficult problems, where babies cry, keep moving, even the scales become inaccurate because babies move a lot. Conventional and digital scales that are used today, mostly use the method where the child is placed on the scale and then measures the child^s weight. Based on these problems, the solution that can be done is to design a control weighing device where the method used is weighing the mother and child together. Control of mother and child scales is needed, in order to provide safety and comfort for children. Safety and comfort are the basic priorities for designing a mother and child weighing system. The system is equipped with mobile phone and PC interfaces. This device is to make it easier for parents and nurses to display the results of weight measurements. The system can be used to monitor a child^s weight development. The aim of the study was to design a mother and child weighing system. This study uses an experimental method. Proof of research in the form of design is done by making prototypes. Prototyping focuses on building mechanical and electrical units. The results of the study show that the product system is precision scales, safe, comfortable and easy to use. Keywords: System Control- Scales- Microcontrol- Arduino Uno Share Link | Plain Format | Corresponding Author (TRI HANNANTO SAPUTRA)

210	Engineering	ABS-247
The application of PVSyst for design of solar photovoltaic power generation at school building Agus Ulinuha, Hasyim Asy^ary, Umar Hasan, Bayu A. Saputra Department of Electrical Engineering, Faculty of Engineering, Universitas Muhammadiyah Surakarta, Solo, Indonesia Abstract The need of electrical power at the school building may be partly fulfilled by solar PV power generation. The panels are installed on the rooftop of the building. For the purpose of optimal design of the generation system, PVSyst is employed for this task. This paper proposes the design of solar PV generation using PVSyst. The design result is then confirmed with the real system. Some adjustments will be carried out to align the design with the real system. For the design, the data of electric load is recorded. The capacity of solar intensity and other parameters were also recorded. With the data in hand, the design of solar PV generation may be carried out. The design was carried out using PVSyst. With the design results, the real system may be implemented referring the document of design. Since the capacity of the available panels is limited some implementation may not be completely implemented. Besides the contribution in the form of load sharing, this will be the tool for students to learn how the electricity may be produced using extensively available and free resources. Keywords: Solar PV- Load sharing, PVSyst, building school, optimal design Share Link | Plain Format | Corresponding Author (Agus Ulinuha)

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