PILLAR OF PHYSICS最新文献_第3页

HAZARD SEISMIC ZONATION ANALYSIS OF WEST SUMATRA REGION USING PROBABILISTIC HAZARD SEISMIC ANALYSIS (PHSA) METHOD 用概率地震危险性分析方法分析西苏门答腊地区的地震危险性分区

PILLAR OF PHYSICS Pub Date : 2021-07-12 DOI: 10.24036/10753171074

Mudzullah Rajif, S. Syafriani

{"title":"HAZARD SEISMIC ZONATION ANALYSIS OF WEST SUMATRA REGION USING PROBABILISTIC HAZARD SEISMIC ANALYSIS (PHSA) METHOD","authors":"Mudzullah Rajif, S. Syafriani","doi":"10.24036/10753171074","DOIUrl":"https://doi.org/10.24036/10753171074","url":null,"abstract":"Indonesia is one of the countries that is prone to high intensity seismicity, where Indonesia is located between three main plates, namely the Eurasian plate in the north, the Indo-Australian plate in the south and the Pacific plate in the northeast. As a result of the meeting of the three plates, Indonesia has a high level of seismicity both on land and at sea. One of the provinces with a high level of earthquake hazard is West Sumatra. Seismic hazards are useful in designing earthquake-resistant buildings and can describe the effects of earthquakes at a location which will help in anticipating community preparedness and earthquake disaster mitigation efforts. This type of research is descriptive, namely by collecting catalog data for the NEIC / USGS earthquake with the period 1969-2019 with M ≥ 5 S.R. Seismic hazard data processing uses the probabilistic seismic hazard analysis (PSHA) method. PSHA is based on earthquake parameters that produce the greatest ground motion. The magnitude of the intensity at a location due to an earthquake in the earthquake source area with a magnitude M and a distance of R can be used as an attenuation function. The attenuation function used in this study is Joyner-Boore (1997) and Young et al (1997). The results show that the largest seismic hazard occurs in the PGA with a maximum range of 1.28 g - 3.69 g in the Mentawai Islands region. The seismic hazard level is in the Bukit Barisan area with a maximum PGA value of 1.72 g - 2.12 g.","PeriodicalId":108974,"journal":{"name":"PILLAR OF PHYSICS","volume":"550 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123509166","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

THE EFFECT OF HYDROPHOBIC CALCINATION TEMPERATURE VARIATION OF SILICA / POLYSTYRENE COMPOSITE (SiO2 / PS) ON THE DURABILITY OF SELF CLEANING MATERIALS 研究了二氧化硅/聚苯乙烯复合材料(SiO2 / PS)疏水煅烧温度变化对自洁材料耐久性的影响

PILLAR OF PHYSICS Pub Date : 2021-07-12 DOI: 10.24036/11369171074

Dila Juliawati, R. Ratnawulan

{"title":"THE EFFECT OF HYDROPHOBIC CALCINATION TEMPERATURE VARIATION OF SILICA / POLYSTYRENE COMPOSITE (SiO2 / PS) ON THE DURABILITY OF SELF CLEANING MATERIALS","authors":"Dila Juliawati, R. Ratnawulan","doi":"10.24036/11369171074","DOIUrl":"https://doi.org/10.24036/11369171074","url":null,"abstract":"Nature possesses functional architectural and surface characteristics. The functional surface is one of the surfaces of taro or lotus leaves which has water-repellent (hydrophobic) properties. Water repellency is the ability to form on surfaces that escape from water (such as glass, ceramics, etc.). The purpose of this study was to determine the resistance of the surface layer on the SiO2/PS layer which is expected to be used for self-cleaning applications using calcination temperatures of 30oC, 60oC, 90oC, 140oC and 180oC for 1 hour using a furnace. This research is a type of experimental research conducted at the Material Physics Laboratory of FMIPA and the FMIPA Chemistry Laboratory, Universitas Negeri Padang (UNP). This study uses a HEM-3D (High Energy Milling Ellipse-3D Mention) tool. The precursor was made by giving the composition of 0.5 grams of polystyrene (PS) and 0.2 grams of silica powder. Coating is done by using the spin coating method and giving the calcination temperature using a furnace. The results of this study were the variations in the calcination temperature of the SiO2 / PS composite hydrophobic on the resistance of the coating showed a change in the contact angle. Largest contact angles at temperatures of 60oC and for durability using contact angle tests with a distance of several days. The change in the contact angle decreases greatly, but the value of the contact angle is greatest at 60oC.","PeriodicalId":108974,"journal":{"name":"PILLAR OF PHYSICS","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125045388","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

DEVELOPMENT OF COORDINATIONS TEST SYSTEM BASED ON ARDUINO 基于arduino的协调测试系统的开发

PILLAR OF PHYSICS Pub Date : 2021-07-12 DOI: 10.24036/10016171074

Adibil Mahdi Rahmad Hidayat, Y. Yohandri

{"title":"DEVELOPMENT OF COORDINATIONS TEST SYSTEM BASED ON ARDUINO","authors":"Adibil Mahdi Rahmad Hidayat, Y. Yohandri","doi":"10.24036/10016171074","DOIUrl":"https://doi.org/10.24036/10016171074","url":null,"abstract":"ABSTRACTIn sports activitiesaplaying tennis ball, a player will appear to haveagood coordination if he can move towards the ball while swinging his racket, then hit with the correct technique. At the moment, the catch and throw exercise is still counted manuallyowith the help of other people and is not veryieffective at doing it. catch is a test to determine the coordination between the eyes and hands using a tennisoball as a throw. The purpose of this study was to determine the performancetspecifications and designwspecifications of the Arduino-based fishing throwing tool to measure eye-handkcoordination. This re search includes engineering research. This study describes the performance specifications and designhspecifications of the catch and capture tool. The performance aspecification describes the function of the catch-and-catch tool builder, while the design specification describes the precision and precision of the tool. The measurement technique is carried out directly and iindirectly. Direct measurementscare made of the vibration and light intensity, while indirect measurements are carried out by analyzing the accuracy and accuracy of the catch and throw tool. The results of research on performance specifications and designuspecifications. First, the performance specification of the catch and catch device consists of an LDR sensor, a vibration sensor, and an electronic circuit that builds a catch-and-catch system. The secondaresult, the results of the design speccifications of this study consisted of the characterization of the tools and the accuracycof the catch and throw tool. The accuracy value of the catch throw tool is 100%.","PeriodicalId":108974,"journal":{"name":"PILLAR OF PHYSICS","volume":"147 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126709804","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

EFFECT OF COMPOSITION VARIATION ON CRYSTAL SIZE OF MnO-Fe₂O₃/PS NANOCOMPOSITE LAYER AS SELF CLEANING 组成变化对自清洁MnO-Fe₂O₃/PS纳米复合层晶粒尺寸的影响

PILLAR OF PHYSICS Pub Date : 2021-07-12 DOI: 10.24036/11370171074

Dafri Zaldi, -. Ratnawulan

{"title":"EFFECT OF COMPOSITION VARIATION ON CRYSTAL SIZE OF MnO-Fe₂O₃/PS NANOCOMPOSITE LAYER AS SELF CLEANING","authors":"Dafri Zaldi, -. Ratnawulan","doi":"10.24036/11370171074","DOIUrl":"https://doi.org/10.24036/11370171074","url":null,"abstract":"This research is based on the abundance of natural materials such as manganese and iron ore. Manganese is usually used for metal coating and has durability so that it is rich in properties to be used for various purposes in the chemical, pharmaceutical, and technological industries. Meanwhile, iron ore is a stable type of oxide so that it has strong properties and is not easily corroded. This research is a type of experimental research conducted at the Laboratory of Material Physics and Biophysics Faculty of Mathematics and Natural Sciences (FMIPA), Padang State University (UNP), and the Chemistry Laboratory of FMIPA UNP. The tools used are HEM-3D, XRD, and UV-VIS. The precursors were prepared by varying the composition of the ratio of MnO-Fe₂O₃ and PS respectively 0,2:0,2:1 ; 0,4:0,4:1 ; 0,6:0,6:1 ; 0,8:0,8:1 ; 1:1:1. This coating is made by means of the spin coating method and uses a temperature of 60 ° using a oven. The results of this study are the maximum crystal size obtained in MnO is 61.26 nm, Fe₂O₃ is 50.45 nm, and MnO-Fe₂O₃ is 53.08 nm. Also, the maximum% degradation produced is 65.97% in a methyl orange solution, this shows that the MnO-Fe₂O₃/PS layer is well degraded. This degradation ability is known as self cleaning because it is able to break down dirt.","PeriodicalId":108974,"journal":{"name":"PILLAR OF PHYSICS","volume":"67 1-2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114021270","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

Land subsidence estimation using DinSAR method ALOS PALSAR image in Padang City West Sumatra, Indonesia 利用DinSAR方法估算印尼西苏门答腊岛巴东市ALOS PALSAR图像的地面沉降

PILLAR OF PHYSICS Pub Date : 2021-02-15 DOI: 10.24036/10673171074

Rahmi Sukmawati, M. Waqar, -. Syafriani, -. Yohandri, J. T. S. Sumantyo

{"title":"Land subsidence estimation using DinSAR method ALOS PALSAR image in Padang City West Sumatra, Indonesia","authors":"Rahmi Sukmawati, M. Waqar, -. Syafriani, -. Yohandri, J. T. S. Sumantyo","doi":"10.24036/10673171074","DOIUrl":"https://doi.org/10.24036/10673171074","url":null,"abstract":"Land subsidence is a phenomenon that occurs in big cities around the world and in Indonesia. Padang as one of the largest cities in West Sumatera also facing land subsidence due to natural phenomena and human induced. Padang City is located at the west coast of Sumatera Island which is the junction point of three active plates that cause frequent earthquakes. Main goals of this research are to know the distribution of area affected by land subsidence, to know the estimated value of land subsidence and to know the value of the velocity of land subsidence in Padang area using DInSAR method. The data used in this study is ALOS PALSAR Image Level 1.1 of Padang city during 2007 to 2010 was obtained through JMRSL CERES Chiba University, Japan and collected through Alaska Satellite Facility website. Differential Interferometric Synthetic Aperture Radar (DInSAR) is a technique considered to be one of the most efficient technique for detecting land subsidence. The DInSAR method is used in mapping altitude changes developed into a land-subsidence map each year. The mapping results show the distribution of the areas affected by the maximum land subsidence in Padang area of West Sumatera are Padang Utara, Nanggalo, and Padang Barat Subdistricts. The land subsidence insignificant occurred is Padang Selatan and Lubuk Begalung Subdistricts. The estimated value of the land subsidence distribution in Padang area using DInSAR method has decreased significantly after the earthquake of September 30, 2009 in Padang Utara, Nanggalo and West Padang Subdistricts is around 0 - 32.70 cm, and the value of land subsidence velocity is around 0.13 - 12 cm/year. One of the expected effects of land subsidence can be increased in the area susceptible for flooding in Padang city.","PeriodicalId":108974,"journal":{"name":"PILLAR OF PHYSICS","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117046001","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

Use of TCS3200 sensor to identify heavy metal materials 使用TCS3200传感器识别重金属材料

PILLAR OF PHYSICS Pub Date : 2021-02-15 DOI: 10.24036/10900171074

Kelvin Septa Dewantara, Yulkifli

{"title":"Use of TCS3200 sensor to identify heavy metal materials","authors":"Kelvin Septa Dewantara, Yulkifli","doi":"10.24036/10900171074","DOIUrl":"https://doi.org/10.24036/10900171074","url":null,"abstract":"v> Heavy metals are natural components that are toxic and can endanger living things even in a very small concentration. Water that is polluted by heavy metals in a certain concentration can harm the ecosystem and can be fatal if entered the human organ system. The principle of heavy metal concentration measurement using the TCS3200 sensor is a sensor will sense the color gradation from dissolved heavy metal. This color gradation will be calibrated to a concentration of dissolved heavy metals. Heavy metal material that is used for this research were FeCl3, NiSO4, and CuSO4. Based on the analysis results, there were 4 results obtained. The first one was performance specification from this instrument consists of a TCS3200 sensor, black acrylic box for the sensor placement. In the black acrylic box, there was a hole sample for sample placement. The second result was the effect of changing in heavy metal concentration to sensors output data is proportional. The third result was an instrument calibrating with existing data. The fourth result was accuracy and precision from the instrument which have been calibrated. For FeCl3 material, the average accuracy was 95.5% and precision was 98.7%. For NiSO4, the average accuracy was 96% and precision was 98.3%. For CuSO4 material, the average accuracy was 99.7% and precision was 99.8%.","PeriodicalId":108974,"journal":{"name":"PILLAR OF PHYSICS","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116913701","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

Easy monitoring and data record system of electric current detected by ACS712 affordable non-destructive electrical current sensor 易监测和数据记录系统的电流检测采用ACS712经济型无损电流传感器

PILLAR OF PHYSICS Pub Date : 2021-02-15 DOI: 10.24036/10741171074

M. B. Sari, L. Yuliantini, H. Prihtiadi, M. Djamal

{"title":"Easy monitoring and data record system of electric current detected by ACS712 affordable non-destructive electrical current sensor","authors":"M. B. Sari, L. Yuliantini, H. Prihtiadi, M. Djamal","doi":"10.24036/10741171074","DOIUrl":"https://doi.org/10.24036/10741171074","url":null,"abstract":"Monitoring and data record system of electric current on the current conducting wire has been developed. Recently, the current measurement was conducted by electronic circuit configuration by adding the shunt resistance in the circuit configuration . Compare to the voltage measurement, the electric current measurement has several obstacle and sometimes dangerous, especially on the AC current measurement. This study offers the automation of electric current measurement using affordable and non-destructive ACS712 Hall effect sensor. Hall effect is the phenomena of charge flow deflection in the metal plate that is placed in the magnetic field. By using this sensor, it is possible to detect the AC and DC current on conducting wires. The output of the sensor voltage will be change based on the magnetic field obtained due to current flows in the wire. Those output voltage are processed in microprocessor of ATMEGA238. Measurement results are saved in *.txt format. LabVIEW is used as the display system interface to simplify the utilization . The measurement is conducted in the Faraday cage. This system can be one of answer for the efficient and stable affordable current measurement with the precision is 0.9954 and average of accuracy percentage is 99.5934%. To reach those precision, the sensor calibration formula in datasheets should be corrected by subtracts the sensor calibration formula with the constant of 0.125.","PeriodicalId":108974,"journal":{"name":"PILLAR OF PHYSICS","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128880271","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: 3

PENYELIDIKAN STRUKTUR BATUAN MENGGUNAKAN METODA GEOLISTRIK TAHANAN JENIS KONFIGURASI WENNER INVERSI ROBUST CONSTRAINT DI JORONG KOTO BARU NAGARI AIE DINGIN KABUPATEN SOLOK

PILLAR OF PHYSICS Pub Date : 2016-10-31 DOI: 10.31227/osf.io/4d7gc

Akmam Akmam, Sri Mulyani, Akmam Akmam, Harman Amir;

引用次数: 0

PEMBUATAN SET EKSPERIMEN GERAK JATUH BEBAS BERBASIS MIKROKONTROLER DENGAN TAMPILAN PC 通过PC显示器创建一组自由落体的微控制器实验

PILLAR OF PHYSICS Pub Date : 2016-09-23 DOI: 10.31958/JS.V6I1.107

Yohanna Dasriyani

引用次数: 11

PENGARUH KERAPATAN TERHADAP KOEFISIEN ABSORBSI BUNYI PAPAN PARTIKEL SERAT DAUN NENAS (Ananas comosus L Merr) 菠萝叶颗粒颗粒吸附系数(Ananas comosus L Merr)的密度影响

PILLAR OF PHYSICS Pub Date : 1900-01-01 DOI: 10.24036/501171074

Wahyudil Hayat

引用次数: 6