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2nd International Conference on Computer, Science, engineering, and Technology, ICComSET 2019

作者： Sutarman, Encu Widjajani Dwipriyoko, Estiyan Civil Engineering Study Program Engineering Faculty Universitas Langlangbuana Bandung Indonesia Industrial Engineering Study Program Engineering Faculty Universitas Langlangbuana Bandung Indonesia Informatics Study Program Engineering Faculty Universitas Langlangbuana Bandung Indonesia

The occurrence of landslides in the hills of Walahir, Kidang Pananjung village, Cililin subdistrict. Bandung in May 2004 needed attention and research so that the causes of the landslide could be identified. This landslide took many lives and property, heaped around 5 hectares of rice fields and residents' villages below and claimed 15 lives. Based on geotechnical investigations, the slip plane is at a depth of 4 meters from the ground surface and the area of the landslide ranges from 30,000 m2 leaving weathered rock beneath. Is the opening of agricultural land and fields followed by the use of chemical fertilizers is one of the causes of landslides? This study aims to determine the effect of a single chemical fertilizer (Urea, Za, SP36) and compound (Green Giant NPK, MKP) on the soil under conditions of optimum water content and water saturation or soaked which are carried out at the Chemical Laboratory of the Department of Energy and Mineral Resources of Bandung and Mechanics Laboratory Bandung Institute of Technology. Research on the influence of chemical fertilizers which is carried out using percentages of 1%, 2% and 3% with a relatively short ripening time intends to analyze the extent to which chemical fertilizers have an effect. Research is limited to the identification of minerals and chemical elements of original soil, soil physis properties, Atterberg boundaries, soil index properties, soil classification, soil elastic modulus. Hypothesis;The chemical content of fertilizers in the soil causes changes in soil characteristics. The method of taking original soil is by drilling original soil around the area where landslide disaster occurred at the same height as the height of the landslide slope, soil samples taken from depths of 1 meter and 3 meters from the surface of the land or the base layer between soil and rocks based on ASTM D-1452, 1587, 1586. Laboratory data from the original soil and chemical soil mixture of fertilizers is needed as input data for

关键词： Landslides

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The effect of methane and carbon dioxide ratio in the biogas to the fuel consumption of 2 stroke single cylinder (63 cc) engine of 750 watt electric generator 11th

The effect of methane and carbon dioxide ratio in the biogas...

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11th International Conference on Materials and Manufacturing Technology, ICMMT 2020

作者： Wijaya, I Wayan Guna Nindhia, Tjokorda Gde Tirta Surata, I. Wayan Sukmawati, Ni Made Dewi Dian Master student at St udy Program of Master in Mechanical Engineering Engineering Faculty Udayana University Jimbaran Bali80361 Indonesia Full Study Program of Mechanical Engineering Engineering Faculty Udayana University Jimbaran Bali80361 Indonesia Faculty of Medicine/Sanglah Hospital Udayana University Denpasar Bali80232 Indonesia

ISBN: (纸本)9783035737226

The 2 stroke single cylinder (63 cc) engine of 750 watt electric generator is very popular in the application because providing enough amount of electricity for small house hold with compact size, light weight with reasonable price. Usually this type of electric generator is fuelled with gasoline that mixed with oil as lubricant. The cylinder volume of the engine is usually around 63 cc. This type of engine can be fuelled with biogas with addition component to mix biogas together with air and lubricant, and set the compression pressure at 10 bar. Biogas mainly contain methane (CH4), carbon dioxide (CO2), moisture (H2O), and hydrogen sulfide (H2S). The CH4 is combustible gas and can be used as a fuel for internal combustion engine. Moisture and H2S are easily removed from biogas. To remove CO2 from biogas is about difficult and costly, therefore acceptable content of CO2 in the biogas should be investigate related with the fuel consumption. This research is conducted to understand the influent of ratio CH4 and CO2 in the biogas to fuel consumption of the 2 stroke single cylinder engine of 750 watt electric generator. The variations ratio of CH4 and CO2 were obtained from anaerobic digester with batch system. The results indicate that the CH4 and CO2 ration in the range 1.667-1.967 will yield optimum efficiency that reach biogas consumption in the range of 9.1-9.8 liter/minute. © 2021 Trans Tech Publications Ltd, Switzerland.

关键词： Biogas

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Nanocellulose Obtained from Biomass as Advance Adsorbent for Methylene Blue and Crystal Violet 5

Nanocellulose Obtained from Biomass as Advance Adsorbent for...

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5th International Conference on Advanced Material for Better Future 2020, ICAMBF 2020

作者： Mahardiani, L. Ilfama, R. Saputro, S. Pranolo, S.H. Septianing, P.W. Chemistry Education Study Program Faculty of Teacher Training and Education Sebelas Maret University Surakarta Indonesia Department of Chemical Engineering Faculty of Engineering Sebelas Maret University Surakarta Indonesia

In this research, the ability of papaya tree trunks as nanocellulose adsorbent for dyes removal was conducted. The synthesis of nanocellulose is carried out in several steps, including isolation of cellulose using the extraction method, immersion with a variety of alkaline bases, namely KOH, KOH+NH3, and KOH+Na2CO3 and synthesis of nanocellulose by hydrolysis reaction. The adsorption process was carried out in batch method, by contacting the nanocellulose adsorbent with the dye, then filtered and observed the change in concentration using UV-Vis. Meanwhile, to observe the functional groups contained in the nanocellulose obtained from synthesis of papaya tree stems FTIR result was evaluated. The results showed that all cellulose-forming groups (CO, CH2, CH) were present in synthesis nanocellulose in accordance with those of the commercial. The synthesis results with variations in the alkaline base which the closest to commercial yield was the variation with the alkaline KOH base. In addition, determination of adsorption performance of ones is compared with performance of commercial nanocellulose. © Published under licence by IOP Publishing Ltd.

关键词： Aromatic compounds

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Performance LoRa Technology for Autonomous Vehicles 24

Performance LoRa Technology for Autonomous Vehicles

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24th International Seminar on Intelligent Technology and Its Applications, ISITIA 2023

作者： Adi, Puput Dani Prasetyo Purnama, Iwan Siregar, Arfanda Anugrah Juledi, Angga Putra Edi, Firman Karim, Abdul Wahyu, Yuyu Maulana, Fairuz Iqbal Susilo, Suhardi Atmoko Budi Toni Harahap, Ilham Maliki Patria, Lintang Bandung Indonesia Labuhanbatu University Faculty of Science and Technology North Sumatra Labuhanbatu Indonesia Politeknik Negeri Medan Telecommunication Engineering Study Program North Sumatra Medan City Indonesia Batam Institute of Technology Faculty of Industrial Technology Department of Engineering Management Riau Islands Batam City Indonesia Budi Darma University Department of Information Technology North Sumatra Medan Indonesia Bina Nusantara University School of Computer Science Computer Science Department Jakarta Indonesia University Labuhanbatu Faculty of Teacher Training and Education North Sumatra Labuhanbatu Indonesia Universitas Terbuka Faculty of Engineering Jakarta Indonesia

ISBN: (纸本)9798350313956

This research is an approach to intelligent vehicles with a LoRa communication system, LoRaWAN compatible for Long-Range and Outdoor Communication, but in this paper, we will test the ability of LoRa to handle autonomous vehicles, a Blind-Adaptive Data method will be tried on vehicles systems. The system offered is when the vehicle is running, the sensor will send position data in real-time, the number of vehicles is four, and GPS data is sent alternately using the Blind Adaptive Data Rate principle to avoid data collisions, and when the GPS shows a certain position, the value of SF is ascertained, which affects the data rate and ToA, and the output given is RSSI on each car, speed of a car, power consumption of sensor nodes, signal power, SNR, Bit rate or data rate, and sensitivity. With the Blind ADR principle, it is ensured that there is no data collision between car position data that causes packet loss. © 2023 IEEE.

关键词： Autonomous vehicles

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3d Aerodynamic Blade Performance of a Novel Plant Airfoil

SSRN

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SSRN 2023年

作者： Rosa, Firlya Soetikno, Priyono Suweca, I. Wayan Moelyadi, Mochammad Agoes Mechanical Engineering Study Program Faculty of Mechanical and Aerospace Engineering Bandung Institute of Technology Bandung40132 Indonesia Department of Mechanical Engineering Faculty of Engineering Universitas Bangka Belitung 33172 Indonesia Fluid Machinery Laboratory Faculty of Mechanical and Aerospace Engineering New and Renewable Research Bandung Institute of Technology Bandung40132 Indonesia

Based on the morphology of the banana leaf's midrib, this study investigates, designs, models, and analyzes the performance of a 3D airfoil in terms of aerodynamics. The objective is to discover if the banana leaf midrib airfoil is suitable for a low-wind-velocity horizontal-axis wind turbine. Model the aerodynamic analysis wind velocity at 3, 4, 5, 6, and 7 meters per second applying QBLADE and ANSYS Fluent. The selected tip speed ratio is 6 for a blade with a radius of 12.5 m and a chord length of 3.180 m. The investigation is conducted in 3D with QBLADE and ANSYS Fluent. Single Reference Frame (SRF) approach with periodic boundary conditions in ANSYS Fluent. According to the data, the coefficient of power was calculated to be 0.46 when QBLADE was used. The average margin of error was 16.4 percentage points lower when using ANSYS FLUENT software instead of QBLADE. Blades with a banana leaf midrib airfoil profile can offer good power even at low wind speeds, as shown by both programs. © 2023, The Authors. All rights reserved.

关键词： Morphology

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An Implementation of Web Based GIS for Distribution of Freshwater Fish Ponds 9

An Implementation of Web Based GIS for Distribution of Fresh...

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9th International Conference on Cyber and IT Service Management, CITSM 2021

作者： Yulfiperius Herawan Hayadi, B. Utami, Risnita Tri Firman Zulkhasyni Pardiansyah, Dedi Universitas Prof. Dr. Hazairin SH Aquaculture Study Program Faculty of Agriculture Bengkulu Indonesia Universitas Prof. Dr. Hazairin SH Informatics Study Program Faculty of Engineering Bengkulu Indonesia

ISBN: (纸本)9781665435482

Geographical Information System is a term in the field of mapping which has a scope of how a system can unify geographic objects and their information. Freshwater fishery is the business of the majority of residents of South Bengkulu Regency covering tilapia and catfish. The solution is to create a web-based Freshwater Fish Pond GIS application using the PHP programming language. Making a database using MySQL, and for geolocation storage using Google Fusion Tables. The web that will be created will later display the GIS Web-based Freshwater Fish Pond Distribution Mapping in South Bengkulu Regency. Each pond will be accompanied by information such as the name of the owner, type of fish, type of pond, and location of the pond. It is known that the number of ponds in 4 villages in 2 districts in South Bengkulu Regency has reached 100 ponds consisting of 80 tilapia fish ponds, 20 catfish ponds. © 2021 IEEE.

关键词： Geographic information systems

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Design of big data technology prototype for classification of village status based on village development index involves k-means algorithm to support village ministry Pdtt work programs 2

Design of big data technology prototype for classification o...

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2nd International Conference on Sciences and Technology Applications, ICOSTA 2020

作者： Hasugian, Paska Marto Hutahaean, Harvei Desmon Sinaga, Bosker Sriadhi Silaban, Saronom Informatics Engineering Study Program STMIK Pelita Nusantara Medan Indonesia Computer Science and Informatics Education Study Program Faculty of Engineering Universitas Negeri Medan Medan20221 Indonesia Departement of Chemistry Universitas Negeri Medan Medan20221 Indonesia

Big data technology is the overall technology that can handle the processing associated with analyzing the data to explore the potential that is in it. Some of the uses of big data are based on the biggest data traffic sources, such as social media, financial transactions, public data, censorship data, and company data. The problem found in the accumulation of village status data that has not been utilized in the decision-making process to determine the status of the next village and the absence of an application to process the data stored in the data database so that a tool is developed to analyze the buildup. The results of this study are to produce a prototype design that is Unified Modeling Language (UML) design, Form Design, and Database Design that will be used to develop Big Data Technology in determining the classification of village status based on the Village Build index. © Published under licence by IOP Publishing Ltd.

关键词： Decision making

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Review the Utilization of Big Data and K-Means Algorithm in Supporting the Determination of Village Status As Support to the Ministry of Village PDTT 2

Review the Utilization of Big Data and K-Means Algorithm in ...

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2nd International Conference on Sciences and Technology Applications, ICOSTA 2020

Big data refers to big data, fast data processing, diversity of data structures, and data values so that it is not possible to be processed with outdated methods. Big data technology is used in various industrial sectors. Big data technology is the whole technology that can handle Big Data. Some of the uses of big data are based on the largest significant data traffic sources such as social media, financial transactions, public data, sensor data, and corporate data. The same is the case with the status of so many villages in Indonesia, so it is better to use big data for the classification of village status based on the village index build by involving an algorithm process. This research aims to produce a description of the role of big data in supporting activities in a grouping. The method used is a qualitative approach related to data collection based on scientific work with the source of data information needed to study literature techniques from various studies that have been published in national and international journals. A decision is made that big data has been widely used in different circles to facilitate performance and speed up the decision-making process. © Published under licence by IOP Publishing Ltd.

关键词： Data mining

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Internet of Medical Things: A Bibliometric Analysis of Research Publications from 2018–2022 4th

Internet of Medical Things: A Bibliometric Analysis of Resea...

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4th International Conference on Electronics, Biomedical engineering, and Health informatics, ICEBEHI 2023

作者： Maulana, Fairuz Iqbal Lestari, Dian Adi, Puput Dani Prasetyo Arifin, Mohammad Nazir Purnomo, Agung Computer Science Department School of Computer Science Bina Nusantara University Jakarta11480 Indonesia Faculty of Medicine Universitas Airlangga Surabaya60132 Indonesia Telecommunication Research Center National Research and Innovation Agency Jakarta11480 Indonesia Informatics Engineering Study Program University of Madura Pamekasan Indonesia Entrepreneurship Department BINUS Business School Undergraduate Program Bina Nusantara University Jakarta11480 Indonesia

ISBN: (纸本)9789819714629

The field of the Internet of Medical Things (IoMT) is experiencing significant growth as it involves the integration of medical devices and systems with the internet and various digital technologies. This study provides a bibliometric analysis of scholarly articles pertaining to the Internet of Medical Things (IoMT) during the time frame of 2018 to 2022. The analysis is conducted using data sourced from the Scopus database. A total of 1165 documents were identified and analyzed to gain insights into the current state of research in this field. The analysis includes trends in publication output, top authors and institutions, and key research topics. The results of the analysis indicate a steady increase in publication output on IoMT over the past five years, with the highest number of publications in 2022. The top authors in this field were Mohanty, S.P., Kougianos, E., and Pirbhulal, S., while the top institutions were King Saud University, Chinese Academy of Sciences, and University of North Texas. Co-citation analysis revealed that wearable devices, telemedicine, and data analytics were among the key research topics in IoMT. This bibliometric analysis offers useful insights into the present research landscape of the Internet of Medical Things (IoMT) spanning the years 2018 to 2022. The findings can be beneficial for researchers, practitioners, policymakers, and funding agencies in understanding the trends and priorities in this field. The top authors and institutions identified in this analysis can serve as valuable resources for collaboration and staying updated on the latest developments in IoMT. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Digital devices

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Configuration blade shape for enhancement crossflow turbine performance by the CFD method

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International Journal of Thermofluids 2024年 22卷

作者： Adanta, Dendy Sari, Dewi Puspita Syofii, Imam Thamrin, Ismail Yani, Irsyadi Marwani Fudholi, Ahmad Prakoso, Aji Putro Department of Mechanical Engineering Faculty of Engineering Universitas Sriwijaya Ogan Ilir South Sumatera30862 Indonesia Study Program of Mechanical Engineering Education Faculty of Teacher Training and Education Universitas Sriwijaya Ogan Ilir South Sumatera 30862 Indonesia Serpong15314 Indonesia Solar Energy Research Institute Universiti Kebangsaan Malaysia Selangor Bangi43600 Malaysia Department of Mechanical Engineering Faculty of Manufacturing Technology Universitas Jenderal Ahmad Yani West Java Cimahi Indonesia

The pico scale crossflow turbine (CFT) is a prospect as an independent power plant for remote and rural areas because it has a stable efficiency range of 64 % to 79.5 % in high discharge fluctuation. An alternative to CFT performance enhancement is determining the upper blade configuration to increase lift force. Hence, this study investigates four configurations of the upper CFT blade: convex blade at the centre edge, convex at the trailing edge, convex at the leading edge and ordinary curvature. This research employs a computational fluid dynamics (CFD) method to visualise the flow field. The upper CFT blade configuration significantly affects its performance, and convex at the leading edge has higher performance than others. The performance related to each blade shape's specific speed is parabolic and expressed using empirical law. The empirical law recommends 4.88 as specific speed for designing a pico scale CFT. © 2024 The Author(s)

关键词： Turbomachine blades

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