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Synthesis And Bonding Analysis Of Magnetite (Fe3o4)/silica (Sio2) Composite Based On Sugarcane Bagasse 甘蔗渣磁铁矿(Fe3o4)/二氧化硅(Sio2)复合材料的合成及键合分析
Journal of Science and Application Technology Pub Date : 2019-05-11 DOI: 10.35472/281425
H. Ardiyanti, D. Puspitarum, O. F. Maryana, W. A. Pujakesuma
{"title":"Synthesis And Bonding Analysis Of Magnetite (Fe3o4)/silica (Sio2) Composite Based On Sugarcane Bagasse","authors":"H. Ardiyanti, D. Puspitarum, O. F. Maryana, W. A. Pujakesuma","doi":"10.35472/281425","DOIUrl":"https://doi.org/10.35472/281425","url":null,"abstract":"This article reports the results synthesis of composite Fe3O4/SiO2 and nanoparticles from natural resources (sugarcane bagasse). The synthesis of Fe3O4 and SiO2 nanoparticles used co-precipitation and sol-gel methods with SiO2 from sugarcane bagasse as a template. The XRD data analysis presented that Fe3O4 were successfully produced using co-precipitation methods. The XRD data analysis also presented that the crystalline phases showed Fe3O4. FTIR spectra presented some absorption peaks of new functional groups indicating the existence of Si-O-Si (silanol), Fe-O, and Fe-O-Si as new functional groups.","PeriodicalId":383398,"journal":{"name":"Journal of Science and Application Technology","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125680191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Potential Analysis of Hydro Power Plants in Pesisir Barat District, Lampung Province 楠榜省Pesisir Barat地区水力发电厂潜力分析
Journal of Science and Application Technology Pub Date : 2019-05-11 DOI: 10.35472/281438
Kiki Kananda, D. Corio, K. Restu, H. Aziz, B. T. Wira, A. Diah
{"title":"Potential Analysis of Hydro Power Plants in Pesisir Barat District, Lampung Province","authors":"Kiki Kananda, D. Corio, K. Restu, H. Aziz, B. T. Wira, A. Diah","doi":"10.35472/281438","DOIUrl":"https://doi.org/10.35472/281438","url":null,"abstract":"Hydropower plants are increasingly being heard nowadays, but the growth is still very lacking, especially for residents living in rural and coastal areas. At present several efforts have been made by the government, including the existence of a system of purchasing electricity from small-scale renewable energy generation and the construction of new transmission networks. Pesisir Barat Regency is part of the South Lampung region, Sumatra. This region has a population distribution in the coastal area and is surrounded by Bukit Barisan National Park. So that there are many large river streams that can be utilized by the local community. Large rivers have the potential to be utilized further as hydropower renewable energy sources. River potential is seen by conducting river location surveys, flow measurements and river heads and power calculations. Based on the analysis of measurement results there are two rivers that have the potential to be a micro or mini hydro generator; Way Laai and Way Lami. The maximum design discharge of Way Laai of 4.52 m3/s can produce a mechanical output power of 1223.82 kW with an effective head of 44.16 m. Way Lami with a design discharge of 5,336 m3/s, an effective head of 28.8 m has the potential to provide a mechanical power output of 942.23 kW. Sequentially, with this mechanical output power, the Way Laai and Way Lami rivers, can meet the electricity needs of the community with an installed power of 900VA as much as ± 1350, ± 25100 Houses.","PeriodicalId":383398,"journal":{"name":"Journal of Science and Application Technology","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130355777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Characteristics and Mineral Content of Lampung Tengah Ironsands 南榜登加铁砂的特征及矿物含量
Journal of Science and Application Technology Pub Date : 2019-05-11 DOI: 10.35472/281488
D. Puspitarum, Gitayani G C Safitri, H. Ardiyanti, M. Anrokhi
{"title":"Characteristics and Mineral Content of Lampung Tengah Ironsands","authors":"D. Puspitarum, Gitayani G C Safitri, H. Ardiyanti, M. Anrokhi","doi":"10.35472/281488","DOIUrl":"https://doi.org/10.35472/281488","url":null,"abstract":"Characteristics and Mineral Content of Lampung Tengah Ironsands. This study is carried out to investigate the characteristics and mineral content of ironsands from Bekri, Lampung Tengah Regency by using precipitation method. The research was conducted in Physics Laboratory of Institut Teknologi Sumatera from June to September 2018. Mineral content of sand is analayzed with X-Ray Diffractometer. The extraction was varied in temperature and stirring time. The temperature is varied in 80oC, 120oC, dan 160oC and yields different size; 33.76 nm, 11.84 nm and 11.14 nm. Meanwhile, the extraction is varied for 2 hours, 4 hours and 6 hours stirring and yields particle with 43.12 nm, 11.14 nm and 11.32 size. Mineral content of ironsands in Lampung Tengah are dominated by Ilmenite and Potassium Chloride.","PeriodicalId":383398,"journal":{"name":"Journal of Science and Application Technology","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128603116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of Southern Segment of Sumatran Fault Monitoring Bench Mark as Preliminary Approach in Updating Earthquake Hazard Map 苏门答腊南段断层监测基准作为更新地震危险度图的初步方法分析
Journal of Science and Application Technology Pub Date : 2019-05-11 DOI: 10.35472/281470
S. M. Alif, Arliandy Pratama
{"title":"Analysis of Southern Segment of Sumatran Fault Monitoring Bench Mark as Preliminary Approach in Updating Earthquake Hazard Map","authors":"S. M. Alif, Arliandy Pratama","doi":"10.35472/281470","DOIUrl":"https://doi.org/10.35472/281470","url":null,"abstract":"Sumatran Fault is one of hazard located in Sumatra Island. Southern segment of Sumatran fault is one of sources of earthquakes in Lampung Province. Hazard map is used as consideration in developing region. The source of hazard comes from stress accumulation of crust which can be derived from movement of points in surface. The study of points or monitoring bench mark to accommodate more precise fault movement or slip and stress accumulation is important for sustainable development in Lampung Province. Tool used for analysis is geographic information system especially buffer analysis. Available monitoring bench mark is analysed so that each bench mark can be classified based on its contribution of fault movement based on distance from segment of current fault. High class bench marks are prioritized to be used as survey sites to monitor fault movement. The other analysis is analysis to obtain region that lack bench mark to monitor segment of current fault or even discover new fault which is branch of segment of current fault. The result of this research is there are four high class bench marks. 58.54% of total segments of 164.020 km long Sumatran fault in Lampung Province is segments with no monitoring bench marks. Three most possible district to build bench mark are Airhitam, Lemong, and Ngambur District.","PeriodicalId":383398,"journal":{"name":"Journal of Science and Application Technology","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134297600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Study of Management and Development of Observatorium Astronomi ITERA Lampung (OAIL) Area: Part I 南榜地区天文观测站管理与发展研究(一)
Journal of Science and Application Technology Pub Date : 2019-05-11 DOI: 10.35472/281476
A. N. I. Putri, W. Z. Ilmi, A. Vatikawa, N. Pratiwi
{"title":"Study of Management and Development of Observatorium Astronomi ITERA Lampung (OAIL) Area: Part I","authors":"A. N. I. Putri, W. Z. Ilmi, A. Vatikawa, N. Pratiwi","doi":"10.35472/281476","DOIUrl":"https://doi.org/10.35472/281476","url":null,"abstract":"Institut Teknologi Sumatera (ITERA) and Institut Teknologi Bandung (ITB) also Government of Lampung Province have launched the ITERA Astronomical Observatory or known with Observatorium Astronomi ITERA Lampung (OAIL). On 20th November 2016, the coordinates of the observatory were determined 05o 27' 71” S and 105o 09' 39” E with height of 1030 above sea level. Development of OAIL area will be the center of education in science field especially in Atmospheric and Planetary Sciences. OAIL also will become the center of ecotourism in Lampung Province which can become a tourist attraction for the people in Lampung even outside Lampung. Therefore, it is necessary that management and development be directed so that the main function of the observatory is not disturbed. In this research will do assessment about OAIL area by distribute questionnaire to some related agencies to evaluate whether OAIL area can be a specific area or not. From 50 respondents, there are 35 respondents say that OAIL area is appropriate as a specific area and 15 respondents say vice verca.","PeriodicalId":383398,"journal":{"name":"Journal of Science and Application Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130611830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Application of the HVSR Microtremor Method for Basalt Outcrops in Tanjung Batu, Jambi HVSR微震法在占壁丹戎Batu玄武岩露头的应用
Journal of Science and Application Technology Pub Date : 2019-05-11 DOI: 10.35472/281415
H. Mz, Surya Bakti Rangkuti
{"title":"Application of the HVSR Microtremor Method for Basalt Outcrops in Tanjung Batu, Jambi","authors":"H. Mz, Surya Bakti Rangkuti","doi":"10.35472/281415","DOIUrl":"https://doi.org/10.35472/281415","url":null,"abstract":"Microtremor data at 15 point had been taken at tanjung batu around of outcrop igneous rock in back arc basin South Sumatra such as carried out at sub basin Jambi. The igneous rock, which is found in this area, is basalt and distributed in ± 825 Ha and located in Desa Tanjung Batu Geragai Jambi. The uniqueness of this outcrop is it intrudes the thick of sedimentary rock which have the thickness around more than 1000 meter, located in east cost of Sumatera Island and far away from the volcanoes. The natural frequency from 1-11 and 15 measurement point varied from 6 Hz-19 Hz. The amplification value from 1-10 and 15 measurement point varied from 0,8 Hz-2,2Hz, but at points 4 and 11 have amplification value from 3,4 Hz and 4,8 Hz. Seismic vulnerability at 1-10 and 15 measurement point varied from 0,8-1,8. but at points 4 and 11 have seismic vulnerability value from 1,4 and 2,3. From these result of natural frequency, amplification, and Seismic vulnerability in the outcrops have contrasting value in each map can be identified as fault from intrusion of basalt.","PeriodicalId":383398,"journal":{"name":"Journal of Science and Application Technology","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122777510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Robust Control of a Quadcopter Flying Via Sliding Mode 滑模四轴飞行器的鲁棒控制
Journal of Science and Application Technology Pub Date : 2019-05-11 DOI: 10.35472/281446
Rudi Uswarman, Swadexi Istiqphara, R. A. Yunmar, A. Rakhman
{"title":"Robust Control of a Quadcopter Flying Via Sliding Mode","authors":"Rudi Uswarman, Swadexi Istiqphara, R. A. Yunmar, A. Rakhman","doi":"10.35472/281446","DOIUrl":"https://doi.org/10.35472/281446","url":null,"abstract":"Sliding Mode Control (SMC) used to control the stability of a quadcopter from disturbances and uncertainties. This technique has two main advantages: the nonlinear dynamics and modelling errors of the quadcopter can be eliminated by switching function and the uncertainty problem can be overcome with a closed-loop response. The controller of the sliding mode technique consists of two components. The first is design equivalent control law to maintain the system state trajectory on the sliding surface. The second is design switching control law to reach the sliding surface. The Lyapunov theorem is used to ensure the stability of the system. Simulation results verify the robustness of the controller.","PeriodicalId":383398,"journal":{"name":"Journal of Science and Application Technology","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127713534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Simulation of Electric Field Distribution on Meniscus of Electrospray with Zinc Oxide Material 氧化锌材料电喷涂半月板上电场分布的模拟
Journal of Science and Application Technology Pub Date : 2019-05-11 DOI: 10.35472/281463
A. D. Refino, H. T. Yudistira, Denny Nugroho, Deska Lismawenning
{"title":"Simulation of Electric Field Distribution on Meniscus of Electrospray with Zinc Oxide Material","authors":"A. D. Refino, H. T. Yudistira, Denny Nugroho, Deska Lismawenning","doi":"10.35472/281463","DOIUrl":"https://doi.org/10.35472/281463","url":null,"abstract":"Electrospray system had attracted attention of many researchers. It is due to easy to yield uniform thin film and possible for thin film mass production. The important parameters of electrospray process for getting uniform thin film are electric field distribution, surface substrate treatment and solvent properties. In this work, we observed electric field distribution on meniscus. Numerical work has carried out on this work. The material on meniscus used zinc oxide liquid properties. Voltage and walking distance between nozzle and substrate are the most important parameter to adjust electric field distribution. The decreasing walking distance with constant voltage yields increasing electric field distribution on meniscus. On vice versa, the increasing walking distance yields decreasing electric field distribution on meniscus. Increasing and decreasing voltage yields increasing and decreasing electric field distribution on meniscus, respectively.","PeriodicalId":383398,"journal":{"name":"Journal of Science and Application Technology","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126869623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
To What Extend Does the Technology Disrupstion Affect the Sale of Smes Banana Chips Products in Bandar Lampung? 技术中断在多大程度上影响了南榜市中小企业香蕉片产品的销售?
Journal of Science and Application Technology Pub Date : 2019-05-11 DOI: 10.35472/281442
H. A. Fitra, F. Sinatra
{"title":"To What Extend Does the Technology Disrupstion Affect the Sale of Smes Banana Chips Products in Bandar Lampung?","authors":"H. A. Fitra, F. Sinatra","doi":"10.35472/281442","DOIUrl":"https://doi.org/10.35472/281442","url":null,"abstract":"Small and Medium-Sized Enterprises (SMEs) in Indonesia, which is also known as Usaha Mikro Kecil dan Menengah (UMKM), play a significant role in determining national economic performance. Banana chips are the most well-known product in Bandar Lampung. As the provincial capital of Lampung Province, Bandar Lampung becomes the center of trade and services sector which is a vital sector of the downstream industry activity. One of the vital aspect in the downstream of Banana chips industry is selling. This study aims to examine the effect of disruptive technology on the sale of SMEs Banana Chips products in Bandar Lampung. This study conduct the quantitative approach by using multiple regression linear analysis. The findings show that the regression model of selling aspect has 0.594 in R2 value. It means that the regression model is able to represent the real condition about 59,4%. According to the model, among the 6 (six) predictor variables, the most-influencing variable on the sale of Banana chips products is online-based promotion.","PeriodicalId":383398,"journal":{"name":"Journal of Science and Application Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131192304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of Protection Structures Planning for Krui Beach, Pesisir Barat Regency, Lampung Province 楠榜省佩西西尔巴拉特县克瑞海滩保护结构规划研究
Journal of Science and Application Technology Pub Date : 2019-05-11 DOI: 10.35472/281420
Nanda Nurisman, T. A. Tarigan
{"title":"Study of Protection Structures Planning for Krui Beach, Pesisir Barat Regency, Lampung Province","authors":"Nanda Nurisman, T. A. Tarigan","doi":"10.35472/281420","DOIUrl":"https://doi.org/10.35472/281420","url":null,"abstract":"Labuhan Jukung Beach is one of the beaches in Kru, which is located on Krui Bay, West Coast District. This beach is a tourist beach directly adjacent to the Indian Ocean, so it has a high wave. Based on wind data from 2008 – 2017 that be analyzed in this research, Krui Beach has extreme wave height (25th return period) as big as 6 meters in deep-sea water and 3.4m in shallow water, consequently Krui Beach has the potential to erode To resolve these problems, must be built environmentally friendly coastal protection structure. The structure that can be used in this beach is groynes. Groynes serve as sediment traps and existence of groin does not disturb tourists who surf the beach. Based on HWS value and run-up wave calculation, the groin structure need to has elevation +10.3m from seabed, with armor weight is 6.3 ton.","PeriodicalId":383398,"journal":{"name":"Journal of Science and Application Technology","volume":"340 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131912595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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