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Simulation of Microwave Effects on Heating Some Bio-Oil Basic Components 微波对生物油基本组分加热效应的模拟
Buletin Fisika Pub Date : 2021-07-05 DOI: 10.24843/bf.2022.v23.i01.p05
Wayan Trimawiasa, I. Sudiana, L. Aba
{"title":"Simulation of Microwave Effects on Heating Some Bio-Oil Basic Components","authors":"Wayan Trimawiasa, I. Sudiana, L. Aba","doi":"10.24843/bf.2022.v23.i01.p05","DOIUrl":"https://doi.org/10.24843/bf.2022.v23.i01.p05","url":null,"abstract":"An investigation of the microwave effect has been carried out by simulating heating the basic components of bio oil. This research aims to produce a heating model and energy distribution of oleic acid and stearic acid component materials. The cylindrical material is placed in a cavity-shaped heating applicator using a microwave excitation frequency of 2.45 GHz through a single waveguide TE10 mode. Numerical solution using time-domain solver and transient solver succeeded in simulating the heating model of the dielectric material with the results of the energy distribution depending on the complex permittivity of the material.","PeriodicalId":32375,"journal":{"name":"Buletin Fisika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45893834","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
Pengaruh Kombinasi Arus Tabung Sinar-X dan Waktu Eksposi Terhadap Contrast to Noise Ratio (CNR) dengan menggunakan Computed Radiography X射线管Arus和对比噪声比曝光时间（CNR）的组合
Buletin Fisika Pub Date : 2021-06-18 DOI: 10.24843/bf.2022.v23.i01.p04
N. Utami, Ratini Ni Nyoman, Juliantara I Putu Eka
{"title":"Pengaruh Kombinasi Arus Tabung Sinar-X dan Waktu Eksposi Terhadap Contrast to Noise Ratio (CNR) dengan menggunakan Computed Radiography","authors":"N. Utami, Ratini Ni Nyoman, Juliantara I Putu Eka","doi":"10.24843/bf.2022.v23.i01.p04","DOIUrl":"https://doi.org/10.24843/bf.2022.v23.i01.p04","url":null,"abstract":"Telah dilakukan penelitian untuk mengetahui pengaruh kombinasi arus tabung sinar-X dan waktu eksposi terhadap Contrast to Noise Ratio (CNR) dengan menggunakan Computed Radiography (CR). Penelitian bertujuan untuk mengetahui kombinasi arus tabung sinar-X dan waktu eksposi terhadap kualitas citra sinar-X dengan menggunakan CR dan nilai optimal CNR-nya. Alat bantu yang digunakan berupa step wedge dengan penambahan ketebalan 1,5 mm pada setiap step, tegangan tabung konstan sebesar 56 kV, arus tabung sinar-X dan waktu eksposi sebesar 5 mAs. Variasi nilai 5 mAs ke dalam arus tabung sinar-X dan waktu eksposi sebagai berikut: variasi 1 sebesar 100 mA dan 0,050 s, variasi 2 sebesar 125 mA dan 0,040 s, variasi 3 sebesar 160 mA dan 0,032 s, variasi 4 sebesar 200 mA dan 0,025 s, dan variasi 5 sebesar 250 mA dan 0,020 s. Pembacaan nilai Is, Ib, dan ?b menggunakan software program RadiAnt DICOM VIEWER 2020.1 (64 bit) dan analisis pengaruh kombinasi arus tabung sinar-X dan waktu eksposi terhadap nilai CNR menggunakan IBM SPSS Statistic 26 dengan Uji One Way-ANOVA. Hasil analisis menunjukkan bahwa kombinasi arus tabung sinar-X dan waktu eksposi tidak berpengaruh terhadap nilai CNR. Nilai optimal CNR adalah 42,37 diperoleh pada variasi 3 yaitu besar arus tabung sinar-X adalah 160 mA dan waktu eksposi sebesar 0,032 s.","PeriodicalId":32375,"journal":{"name":"Buletin Fisika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43263327","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
Smoke Distribution Patterns Analysis on Meteorological Conditions on Kalimantan Island Related to Forest and Land Fires: A Case Study Forest Fires In September 2019 与森林和土地火灾相关的加里曼丹岛气象条件的烟雾分布模式分析:以2019年9月森林火灾为例
Buletin Fisika Pub Date : 2021-06-08 DOI: 10.24843/bf.2022.v23.i01.p03
Ivan Bachtiar Pandapotan, Suarbawa Komang Ngurah, I. Widagda
{"title":"Smoke Distribution Patterns Analysis on Meteorological Conditions on Kalimantan Island Related to Forest and Land Fires: A Case Study Forest Fires In September 2019","authors":"Ivan Bachtiar Pandapotan, Suarbawa Komang Ngurah, I. Widagda","doi":"10.24843/bf.2022.v23.i01.p03","DOIUrl":"https://doi.org/10.24843/bf.2022.v23.i01.p03","url":null,"abstract":"A research has been carried out regarding forest and land fires that occurred in the Kalimantan area in September 2019. Meteorological factors such as rainfall, humidity, air temperature, speed and wind direction are parameters that can affect the process of fire occurrence and smoke distribution. In this study, meteorological data and smoke images from BMKG Tuban, Bali were used which were processed and analyzed so that they could be used to interpret meteorological conditions and smoke patterns on the island of Kalimantan. The smoke image that has been collected is processed using HYDRA software on channels 1, 2, and 7 and SATAID software on channels 3, 4, and 6 so that the color of the smoke and the distribution of smoke from forest fires will be visible in the form of images. Based on the results of the study, it can be concluded that the meteorological factors that cause forest fires are rainfall which quite low/minimal, temperature with an average of >30?, air humidity of 70%-80%, and the pattern of smoke spread is caused by winds moving from east to westward at a speed of 10 km/h to 37.04 km/h.","PeriodicalId":32375,"journal":{"name":"Buletin Fisika","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68883371","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
Rancangan Alat Ukur Suhu dan Kelembaban Udara Menggunakan Mikrokontroler ATmega 328P 基于ATmega 328P单片机的空气温湿度测量工具设计
Buletin Fisika Pub Date : 2021-04-03 DOI: 10.24843/bf.2022.v23.i01.p02
Hadi Apriandi, Satriya Wibawa I Made, Antha Kasmawan I Gde
{"title":"Rancangan Alat Ukur Suhu dan Kelembaban Udara Menggunakan Mikrokontroler ATmega 328P","authors":"Hadi Apriandi, Satriya Wibawa I Made, Antha Kasmawan I Gde","doi":"10.24843/bf.2022.v23.i01.p02","DOIUrl":"https://doi.org/10.24843/bf.2022.v23.i01.p02","url":null,"abstract":"It has been successfully made design of a digital temperature and humidity measuring instrument using ATmega 328P microcontroller. The results of temperature and humidity data are measured using the DHT22 sensor which receives data signals in the form of temperature and humidity. Design of the instrument is placed in the same place as the reference instrument, namely in the instrument shop, then the results of the design of the reference instrument and instrument are processed into graphical form and proven using linear regression equations. The measurement results are displayed on the LCD keypad shield. The results of the instrument design calibration carried out on the reference instrument have a fairly good level of accuracy, namely for air temperature of 99.99% and humidity of 98.34%. From the results of the calibration carried out, it shows that the design of the instrument made has good validity (accuracy and precision).","PeriodicalId":32375,"journal":{"name":"Buletin Fisika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41650338","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
Calibration of the BMP280 and ESP-12S Based Wireless Atmospheric Pressure Measure Equipment Using a Pressure Chamber 基于压力室的BMP280和ESP-12S无线大气压力测量设备的校准
Buletin Fisika Pub Date : 2021-03-06 DOI: 10.24843/bf.2022.v23.i01.p01
A. Laksono, I. Widagda
{"title":"Calibration of the BMP280 and ESP-12S Based Wireless Atmospheric Pressure Measure Equipment Using a Pressure Chamber","authors":"A. Laksono, I. Widagda","doi":"10.24843/bf.2022.v23.i01.p01","DOIUrl":"https://doi.org/10.24843/bf.2022.v23.i01.p01","url":null,"abstract":"In order to study and practice the method of meteorological atmospheric pressure gauge calibration, the design, assembly and calibration of an experimental wireless atmospheric pressure gauge based on the BMP280 digital pressure sensor and the System on Chip ESP-12S has been carried out. Using the Vaisalla PTB330 digital barometer secondary pressure standard, the instrument is calibrated in the pressure chamber in the pressure range 850-1050 hPa with a maximum tolerance limit of ± 0.15 hPa at a 95% confidence level. Based on the test results of the correction parameters and U95, it shows that the reliability of the sensor interface system and the internal correction application method used in the calibration process provide calibration results that meet the requirements of the WMO standard. The precision test on repeatability conditions based on ISO5725: 1994 is also used as a measure of tool precision. Through this calibration report, the performance and accuracy of the BMP280 sensor in relation to measurements on meteorological objects, especially atmospheric pressure can be known and studied further.","PeriodicalId":32375,"journal":{"name":"Buletin Fisika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47045451","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
Analysis Distribution of the Volcanic Ash Eruption of Mount Agung 2018 and Its Influence on the Surface Temperature of the Land Area of Bali by Using the Split Windows Method 用分窗法分析2018年阿贡火山灰喷发的分布及其对巴厘岛陆域地表温度的影响
Buletin Fisika Pub Date : 2021-01-25 DOI: 10.24843/bf.2021.v22.i02.p09
Septian Jonathan, I. K. Sukarasa, I. Wirata
{"title":"Analysis Distribution of the Volcanic Ash Eruption of Mount Agung 2018 and Its Influence on the Surface Temperature of the Land Area of Bali by Using the Split Windows Method","authors":"Septian Jonathan, I. K. Sukarasa, I. Wirata","doi":"10.24843/bf.2021.v22.i02.p09","DOIUrl":"https://doi.org/10.24843/bf.2021.v22.i02.p09","url":null,"abstract":"Sebaran awan debu vulkanik erupsi Gunung Agung 2018 dapat diketahui dengan pengolahan data komposisi RGB menggunakan metode split windows pada aplikasi SATAID, yang dapat membedakan awan debu vulkanik atau awan meteorologi (awan air/es), dan juga dapat mengetahui arah angin yang terjadi pada saat kejadian. Data komposisi RGB diperoleh dari satelit cuaca Himawari-8 melalui kanal IR (10,4 µm), kanal I2 (12,4 µm) dan kanal I4 (3,9 µm) yang  mampu mengidentifikasi keberadaan awan debu vulkanik. \u0000Kata kunci: Gunung Agung, Himawari-8, Erupsi, Split Windows, RGB.","PeriodicalId":32375,"journal":{"name":"Buletin Fisika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48398465","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
Identifikasi Hubungan Aktivitas Petir Tipe Cloud to Ground Dengan Curah Hujan Di Seputaran BMKG Sanglah Tahun 2018 确定2018年BMKG回归中的闪电类型与地面辐射的关系
Buletin Fisika Pub Date : 2021-01-25 DOI: 10.24843/bf.2021.v22.i02.p07
Lintang Ardhana Reswari, I. K. Sukarasa, I. D. Pratama
{"title":"Identifikasi Hubungan Aktivitas Petir Tipe Cloud to Ground Dengan Curah Hujan Di Seputaran BMKG Sanglah Tahun 2018","authors":"Lintang Ardhana Reswari, I. K. Sukarasa, I. D. Pratama","doi":"10.24843/bf.2021.v22.i02.p07","DOIUrl":"https://doi.org/10.24843/bf.2021.v22.i02.p07","url":null,"abstract":"Sambaran petir yang berdampak langsung ke manusia adalah jenis petir CG (Cloud to Ground). Penelitian ini bertujuan untuk mengetahui hubungan antara jumlah sambaran petir dan curah hujan (CH) yang terjadi di Seputaran BMKG Sanglah Tahun 2018. Data yang digunakan adalah data curah hujan yang diperoleh dari penakar hujan otomatis  atau Automatic Rain Gauge (ARG) dan data petir CG dari lightning detector yang terpasang di BMKG Sanglah Denpasar. Data petir CG (positif dan negatif) dibatasi dalam radius 5 km dari sensor. Data petir dan curah hujan yang diperoleh kemudian dilihat korelasinya menggunakan uji korelasi spearman untuk mengetahui hubungan antara curah hujan dan petir tersebut. Hasil yang diperoleh menunjukkan hubungan antara curah hujan dan petir CG harian dan bulanan dengan korelasi Spearman sebesar 0,372 dan 0,834 yang artinya hubungan kedua variabel tersebut memiliki korelasi searah dimana semakin besar curah hujan semakin besar pula sambaran petir yang terjadi.","PeriodicalId":32375,"journal":{"name":"Buletin Fisika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41661468","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
Design of Soil pH Measuring Instruments Using pH Meter Sensor Module V1.1 SEN0161 Based on Arduino Uno 基于Arduino Uno的pH计传感器模块V1.1 SEN0161土壤pH测量仪的设计
Buletin Fisika Pub Date : 2021-01-25 DOI: 10.24843/bf.2021.v22.i02.p08
Gusnul H Yakin, I. M. Satriya Wibawa, I. K. Putra
{"title":"Design of Soil pH Measuring Instruments Using pH Meter Sensor Module V1.1 SEN0161 Based on Arduino Uno","authors":"Gusnul H Yakin, I. M. Satriya Wibawa, I. K. Putra","doi":"10.24843/bf.2021.v22.i02.p08","DOIUrl":"https://doi.org/10.24843/bf.2021.v22.i02.p08","url":null,"abstract":"It has been successfully made a soil pH measuring instrument using pH meter sensor module V1.1 SEN0161 based Arduino Uno. The pH result is measured through the output of the pH meter sensor output value read by the 16-bit ADC. Measurement results are displayed on a 2x16 LCD. The results of calibration test tools performed against standard measuring instruments obtained regression equation y = 0.0012x - 4.0768 with x is the output of sensor output value with accuracy level includes an average deviation of 0.13 and tool precision value of 97.98%. The results of calibration test tools carried out show the measuring instruments made have a good validity (accuracy and precision).","PeriodicalId":32375,"journal":{"name":"Buletin Fisika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46652308","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
Determination of Fault Type of Lombok Earthquakes from July 1 to December 31, 2018, using Focal Mechanism Method 用震源机制法确定2018年7月1日至12月31日龙目岛地震断层类型
Buletin Fisika Pub Date : 2021-01-22 DOI: 10.24843/bf.2021.v22.i02.p06
N. Wardani, K. N. Suarbawa, Ridwan Kusnandar
{"title":"Determination of Fault Type of Lombok Earthquakes from July 1 to December 31, 2018, using Focal Mechanism Method","authors":"N. Wardani, K. N. Suarbawa, Ridwan Kusnandar","doi":"10.24843/bf.2021.v22.i02.p06","DOIUrl":"https://doi.org/10.24843/bf.2021.v22.i02.p06","url":null,"abstract":"Research has been conducted on determining the type of fault in Lombok earthquake on July 1 to December 31 2018 using the focal mechanism method. The focal mechanism is a method of reviewing fault parameters that include strike, dip and rake based on the initial movement direction of P wave recorded by the station, which then projected into a focal ball. There are 246 stations are used in several countries. There were 139 earthquakes with M?4.0 on July 1 to December 31 2018, at coordinates 7.0? S-9.0? S and 115.5? E-117.5? E. The result of fault field parameters is at nodal 1 strike=52?-149?, dip=6?-75?, rake=39?-143? and at nodal 2, strike=233?-313?, dip=18?-84?, rake=58?-119?, then projected into focus ball. Based on these results shows that earthquakes occur as a result of thrust fault movement.","PeriodicalId":32375,"journal":{"name":"Buletin Fisika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42894532","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
Characterization of Human Nails Samples Using FTIR (Fourier Transform Infrared) Through Chemometric Methods PCA and Clustering 利用化学计量学方法、主成分分析和聚类分析对人体指甲样品进行FTIR(傅里叶变换红外)表征
Buletin Fisika Pub Date : 2021-01-19 DOI: 10.24843/bf.2021.v22.i02.p05
Shinta Shaleha Juwita, N. L. Trisnawati, H. Suyanto
{"title":"Characterization of Human Nails Samples Using FTIR (Fourier Transform Infrared) Through Chemometric Methods PCA and Clustering","authors":"Shinta Shaleha Juwita, N. L. Trisnawati, H. Suyanto","doi":"10.24843/bf.2021.v22.i02.p05","DOIUrl":"https://doi.org/10.24843/bf.2021.v22.i02.p05","url":null,"abstract":"Research has been carried out on the characterization of human nail samples by FTIR (Fourier Transform Infrared) using Chemometric PCA and Clustering methods. The sample used was left middle fingernail (TTK) from three people from one family (SKR) and two people who were not family (BKR). The test was carried out on TTK nail samples with a mass ratio of TTK nails with KBr 3:1. The results characterization by FTIR showed the presence of functional group O-H, C-H, C=O, N-H, C-N, P=O, C-O-C, nitrate, and nitrite in the TTK nail samples. The results of the analysis using the Chemometric PCA and Clustering methods showed that the TTK nail samples showed similarity in one family. This is based on the similarity of the types of molecules and their absorbance values. In addition, based on the results of PCA loading analysis, the wavenumber identity of the TTK nail samples were found in the range 1597-1479 cm-1.","PeriodicalId":32375,"journal":{"name":"Buletin Fisika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41531364","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
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