Jurnal Fisika Unand最新文献_第9页

Prototipe Alat Pengujian Gelombang dengan Buzzer Generator Frekuensi Sebagai Alternatif Pengusir Tikus 这是一个带有频率发生器发生器的波测试设备的原型，作为替代防鼠剂

Jurnal Fisika Unand Pub Date : 2023-10-04 DOI: 10.25077/jfu.12.4.526-533.2023

Umi Pratiwi, Zaroh Irayani

{"title":"Prototipe Alat Pengujian Gelombang dengan Buzzer Generator Frekuensi Sebagai Alternatif Pengusir Tikus","authors":"Umi Pratiwi, Zaroh Irayani","doi":"10.25077/jfu.12.4.526-533.2023","DOIUrl":"https://doi.org/10.25077/jfu.12.4.526-533.2023","url":null,"abstract":"Tikus merupakan hewan pengerat yang banyak mendatangkan kerugian baik di rumah tangga, industri, maupun pertanian. Selain mengganggu kesehatan, tikus juga pernah menjadi salah satu penyebab menurunnyya produksi beras secara nasional pada tahun 2015-2017. Perkembangan teknologi menawarkan solusi permasalahan ini dengan pemanfaatan gelombang suara untuk membuat pendengaran tikus terganggu. Penelitian ini bertujuan untuk merancang prototype alat pengujian gelombang suara menggunakan kontrol potensiometer guna mendapatkan besar frekuensi yang cukup efektif mengganggu pendengaran tikus. Penelitian ini merupakan penelitian perancangan yang menggunakan adopsi model 4D Thiagarajan. Adapun Istrumen yang digunakan dalam penelitian ini adalah lembar validasi ahli dan lembar uji laboratorium. Berdasarkan hasil penelitian yang telah diperoleh: (1) Alat memenuhi kriteria kelayakan pada uji coba laboratorium dengan tingkat kesalahan yang sangat kecil sebesar 0.05% pada output sistem, 0.06% pada uji komparasi tegangan, dan kesalahan sebesar 0.07% pada uji komparasi arus. (2) Alat memenuhi kriteria kelayakan pada uji validasi dengan persentase sebesar 78% dengan pengujian lapangan . Penelitian perancangan ini tentunya memiliki keterbatasan penelitian sehingga untuk pengembangan lebih lanjut bisa ditambahkan sampel pengujian untuk jenis hama ataupun serangga untuk menguji efektifitasnya senagai alat pengusir hama.","PeriodicalId":497807,"journal":{"name":"Jurnal Fisika Unand","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135646929","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

Interpretasi Struktur Bawah Permukaan Menggunakan Data Anomali Medan Magnet Daerah Manifestasi Panas Bumi Sampuraga Kabupaten Mandailing Natal 利用曼达林-纳塔尔省桑普拉加地热示范区的磁场异常数据解读地下结构

Jurnal Fisika Unand Pub Date : 2023-10-04 DOI: 10.25077/jfu.12.4.554-560.2023

Rita Ummi Sahida Tanjung, Dwi Pujiastuti, Ardian Putra

{"title":"Interpretasi Struktur Bawah Permukaan Menggunakan Data Anomali Medan Magnet Daerah Manifestasi Panas Bumi Sampuraga Kabupaten Mandailing Natal","authors":"Rita Ummi Sahida Tanjung, Dwi Pujiastuti, Ardian Putra","doi":"10.25077/jfu.12.4.554-560.2023","DOIUrl":"https://doi.org/10.25077/jfu.12.4.554-560.2023","url":null,"abstract":"This research was conducted to identify the distribution of magnetic field anomalies to determine the subsurface structure of the area around Sampuraga hot springs. Magnetic field data was measured using a magnetometer in an area with dimensions of 1400 m x 1100 m with 154 points. The measurement data is a total magnetic field, and to obtain magnetic field anomaly values, corrections are made for diurnal variation and IGRF correction. Magnetic field anomaly values range from 353,1 nT to 7622,0 nT. Magnetic field anomaly data were processed using the Oasis Montaj software by reducing to the poles, upward continuation, and 2D modeling. The 2D modeling results show three layers of soil in the study area. The upper part (first and second layers) is interpreted as a caprock. This layer consists of sedimentary rock types of sandstone and clay and igneous rock in the form of granite at a depth of up to 1700 m. The lower part (third layer) is interpreted as a reservoir. This layer consists of metasedimentary volcanic rock, clay alteration, andesitic lava, and dacitic lava with a depth of up to 2030 m from the ground surface. The results of this model also interpret the fault zone as an outflow zone so that it forms manifestations on the surface. These three geothermal system components show that the Sampuraga area can be further developed and explored .","PeriodicalId":497807,"journal":{"name":"Jurnal Fisika Unand","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135646789","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

Perhitungan Shutdown Margin Teras NuScale Menggunakan OpenMC 使用 OpenMC 计算 NuScale 梯级关机保证金

Jurnal Fisika Unand Pub Date : 2023-10-04 DOI: 10.25077/jfu.12.4.512-517.2023

Hadi Razaqiyanto, Mohammad Ali Shafii, Helen Raflis

引用次数: 0

Karakteristik Sistem Awan Konvektif Cumulonimbus Berbasis Radar Cuaca C-Band di Sekitar Bandara Internasional Sultan Hasanuddin Makassar 苏丹·哈萨纳丁·马卡萨国际机场周围以c波段为基础的对流云系统的特征

Jurnal Fisika Unand Pub Date : 2023-10-04 DOI: 10.25077/jfu.12.4.568-576.2023

Nabilla Akhirta, Eko Hadi Sujiono, Pariabti Palloan

{"title":"Karakteristik Sistem Awan Konvektif Cumulonimbus Berbasis Radar Cuaca C-Band di Sekitar Bandara Internasional Sultan Hasanuddin Makassar","authors":"Nabilla Akhirta, Eko Hadi Sujiono, Pariabti Palloan","doi":"10.25077/jfu.12.4.568-576.2023","DOIUrl":"https://doi.org/10.25077/jfu.12.4.568-576.2023","url":null,"abstract":"Sistem konvektif Cumulonimbus merupakan kumpulan awan yang terdiri dari awan Cumulonimbus dan awan awan lain yang membentuk sebuah sistem, yang dapat menimbulkan cuaca signifikan. Karakteristik fisis dan dinamis Cumulonimbus diperoleh menggunakan radar cuaca C-Band pada musim peralihan dan musim hujan September hingga Februari 2016 – 2022, berpusat pada radius 150 km di sekitar Bandara Internasional Sultan Hasanuddin Makassar. Sembilan tipe morfologi sistem konvektif meso-β ditemukan dengan panjang awan 20-220 km dan panjang rata-rata awan 65 km. Sistem konvektif dominan membentuk sistem linier. Morfologi yang paling banyak terbentuk adalah sistem linier Trailing Stratiform , dan sistem seluler Cluster of Cells . Pada musim peralihan, inisiasi Cumulonimbus dominan di dataran tinggi dan pada musim hujan inisiasi dominan di laut pesisir. Secara umum Cumulonimbus matang di laut pesisir pada siang hari. Cluster of Cells dan Bow Echo adalah sistem yang paling aktif di darat, dengan windshear yang relatif lebih kuat dari semua sistem konvektif. Sistem sebagian besar berpropagasi dengan lambat. Vertical wind shear paling besar terjadi pada lapisan 0,3 – 2 km. Verifikasi dari media massa dan laporan pilot menunjukkan bahwa Cumulonimbus dapat menyebabkan bencana hidrometeorologi dan mengganggu penerbangan.","PeriodicalId":497807,"journal":{"name":"Jurnal Fisika Unand","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135646792","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

Perbandingan Dosis Serap Bolus Berbahan Playdough, Plastisin, dan Silicone Rubber pada Radioterapi Berkas Elektron 6 MeV dan 9 MeV 电子文件放射治疗系数6 MeV和9 MeV的Playdough, Plastisin和硅橡胶橡胶增生率比较

Jurnal Fisika Unand Pub Date : 2023-10-04 DOI: 10.25077/jfu.12.4.577-583.2023

Niken Pramita, Rico Adrial, Muhammad Ilyas

{"title":"Perbandingan Dosis Serap Bolus Berbahan Playdough, Plastisin, dan Silicone Rubber pada Radioterapi Berkas Elektron 6 MeV dan 9 MeV","authors":"Niken Pramita, Rico Adrial, Muhammad Ilyas","doi":"10.25077/jfu.12.4.577-583.2023","DOIUrl":"https://doi.org/10.25077/jfu.12.4.577-583.2023","url":null,"abstract":"Comparison of absorbed dose bolus made from playdough, plasticine, and silicone rubber in electron beam radiotherapy has been assessed. This study aims to compare the absorbed dose, calculate the Relative Electron Density (RED) value, and physical density of playdough, plasticine, and silicone rubber bolus. The boluses were made with dimension of 15 cm × 15 cm and thickness of (0,5; 1,0; 1,5; and 2,0) cm. RED value was obtained from tomographic image using CT-Simulator by determining 5 Region of Interest (ROI) regions. The physical density was calculated based on the mass and volume ratio. The absorbed dose was measured using a plan parallel chamber detector with a Linear Accelerator (LINAC) energy variation of 6 MeV and 9 MeV. The results are playdough, plasticine, and silicone rubber bolus have a homogeneous material composition with RED values is above the RED of water. The physical density of playdough and plasticine bolus is above the density of skin tissue but lower than bone tissue, while the physical density of silicone rubber bolus is close to the density of water, muscle, liver, kidney, and lung tissue. The absorbed dose value of silicone rubber bolus with a thickness of 0.5 cm is closer to the absorbed dose without bolus, so bolus of silicone rubber that are better used at energy of 6 MeV and 9 MeV are silicone rubber bolus.","PeriodicalId":497807,"journal":{"name":"Jurnal Fisika Unand","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135646791","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

Profil Pencemaran Air Sungai Cikijing di Kabupaten Bandung dan Kabupaten Sumedang 万隆县和苏美当县稚京河水污染概况

Jurnal Fisika Unand Pub Date : 2023-10-04 DOI: 10.25077/jfu.12.4.541-547.2023

Dhiyah Aqila Putri, Afdal Afdal

{"title":"Profil Pencemaran Air Sungai Cikijing di Kabupaten Bandung dan Kabupaten Sumedang","authors":"Dhiyah Aqila Putri, Afdal Afdal","doi":"10.25077/jfu.12.4.541-547.2023","DOIUrl":"https://doi.org/10.25077/jfu.12.4.541-547.2023","url":null,"abstract":"Penelitian ini dilakukan untuk mengetahui profil pencemaran air Sungai Cikijing di Kabupaten Bandung dan Kabupaten Sumedang. Parameter yang diuji yaitu pH, konduktivitas listrik, temperatur, kekeruhan, TDS, TSS dan konsentrasi logam berat (Cu, Cr dan Pb). Pengukuran pH, temperatur dan konduktivitas listrik dilakukan di lapangan. Pengukuran TDS dan TSS dilakukan menggunakan metode gravimetri, pengukuran kekeruhan dilakukan menggunakan turbidimeter dan pengukuran konsentrasi logam berat dilakukan menggunakan alat Inductively Coupled Plasma – Optical Emmision Spectrometry (ICP-AES). Tingkat pencemaran air sungai dianalisis menggunakan metode Indeks Pencemaran (IP). Dari hasil semua pengukuran parameter disimpulkan bahwa tingkat pencemaran air Sungai Cikijing di Kabupaten Bandung dan Kabupaten Sumedang tergolong dalam tercemar ringan dengan nilai IP yaitu 2,8146 yang termasuk ke dalam golongan B yang tidak dapat dikonsumsi untuk air minum dan keperluan rumah tangga. Nilai pH mengalami penurunan dari penelitian sebelumnya yaitu bernilai 6 yang bersifat asam. Deviasi temperatur didapatkan berkisar antara 1,37°C - 5,2°C yang tergolong buruk bagi kehidupan organisme dalam air. Konsentrasi logam berat Cu, Cr, Pb masih di bawah batas baku mutu menurut PP No.22 Tahun 2021. Nilai konduktivitas listrik, TDS dan TSS yang didapatkan mengalami kenaikan dari penelitian sebelumnya.","PeriodicalId":497807,"journal":{"name":"Jurnal Fisika Unand","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135646927","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

Sistem Pemantauan Slot Parkir Menggunakan Sensor Ultrasonik JSN-SR04T dan Pengenalan Plat Nomor Kendaraan dengan ESP32-CAM 使用超声波JSN-SR04T传感器和带有esp32摄像头的车牌识别系统监控插槽系统

Jurnal Fisika Unand Pub Date : 2023-10-04 DOI: 10.25077/jfu.12.4.534-540.2023

Khairina Auliya, Meqorry Yusfi, Rahmat Rasyid

{"title":"Sistem Pemantauan Slot Parkir Menggunakan Sensor Ultrasonik JSN-SR04T dan Pengenalan Plat Nomor Kendaraan dengan ESP32-CAM","authors":"Khairina Auliya, Meqorry Yusfi, Rahmat Rasyid","doi":"10.25077/jfu.12.4.534-540.2023","DOIUrl":"https://doi.org/10.25077/jfu.12.4.534-540.2023","url":null,"abstract":"A parking slot monitoring system prototype has been produced using the JSN-SR04T ultrasonic sensor and vehicle license plate recognition with ESP32-CAM. The system was created to make it easier for motorists to monitor the availability of parking slots remotely by utilizing Telegram which is connected to the ESP32-CAM module and Arduino Mega 2560. The ultrasonic sensor detects the distance of vehicles entering or exiting the parking lot, then a servo motor opens the entry and exit bars. Vehicle users can monitor the availability of parking slots on the Telegram bot. In each slot there is an ultrasonic sensor that detects the distance so that it can find out whether there is a vehicle in the slot. The test results show that the ultrasonic sensor has an average error percentage of 0.65%. The parking barrier can be opened when the ultrasonic sensor detects the presence of a vehicle at the entrance or exit and the ultrasonic sensor can detect the presence of a vehicle according to the conditions in the slot. The system is equipped with vehicle license plate character recognition using the Optical Character Recognition (OCR) method. Through the ESP32-CAM module camera webserver, the OCR program can detect vehicle plates with the furthest distance of 140 cm using video resolution (400x296) and 300 cm using video resolution (1600x1200). The OCR program can read the vehicle plate characters correctly and the results for the number of characters obtained correspond to the license plate being tested, then the vehicle plate data is stored in the database","PeriodicalId":497807,"journal":{"name":"Jurnal Fisika Unand","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135646790","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