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BATAS MEDAN LEMAH PADA GRAVITASI f(T) 重力极限f(T)
Komunikasi Fisika Indonesia Pub Date : 2022-03-31 DOI: 10.31258/jkfi.19.1.25-30
Tika Restianingsih
{"title":"BATAS MEDAN LEMAH PADA GRAVITASI f(T)","authors":"Tika Restianingsih","doi":"10.31258/jkfi.19.1.25-30","DOIUrl":"https://doi.org/10.31258/jkfi.19.1.25-30","url":null,"abstract":"","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"20 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132531611","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
KARAKTERISASI SIFAT ELEKTROKIMIA ELEKTRODA KARBON AKTIF BERBASIS LIMBAH SABUT KELAPA MUDA MENGGUNAKAN SEPARATOR MEMBRAN KULIT TELUR AYAM 使用鸡蛋蛋壳壳膜膜膜，对活化的碳电极的活性化学特性进行描述
Komunikasi Fisika Indonesia Pub Date : 2022-03-31 DOI: 10.31258/jkfi.19.1.31-34
Angela Carolina Simanjuntak, Awitdrus Awitdrus
{"title":"KARAKTERISASI SIFAT ELEKTROKIMIA ELEKTRODA KARBON AKTIF BERBASIS LIMBAH SABUT KELAPA MUDA MENGGUNAKAN SEPARATOR MEMBRAN KULIT TELUR AYAM","authors":"Angela Carolina Simanjuntak, Awitdrus Awitdrus","doi":"10.31258/jkfi.19.1.31-34","DOIUrl":"https://doi.org/10.31258/jkfi.19.1.31-34","url":null,"abstract":"The supercapacitor is an energy storage device with an electrochemical characteristic that can provide high energy and power density. The supercapacitor cell consists of a current collector, electrode, electrolyte, and separator. This study used young coconut fiber biomass as a supercapacitor electrode, H 2 SO 4 as an electrolyte, 316L stainless steel as a current collector, and chicken eggshell membrane as a separator. The fabrication of electrode carbon made from young coco fiber begins with the pre-carbonization process, chemical activation using 0.5M KOH, carbonization process using N 2 gas at a temperature of 600 °C, and physical activation using CO 2 gas at a temperature of 750 °C. Analysis of electrochemical characteristics using cyclic voltammetry method resulting in a specific capacitance value of 197.05 F/g for a scan rate of 1 mV/s, 157.215 F/g for a scan rate of 2 mV/s, and 129.42 F/g for scan rate of 5 mV/s.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123492485","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
SIKLIS VOLTAMETRI SEL SUPERKAPASITOR DARI BIOMASSA PELEPAH SALAK
Komunikasi Fisika Indonesia Pub Date : 2022-03-31 DOI: 10.31258/jkfi.19.1.19-24
Rakhmawati Farma, Amalia Apriliani Putri, Irma Apriyani
{"title":"SIKLIS VOLTAMETRI SEL SUPERKAPASITOR DARI BIOMASSA PELEPAH SALAK","authors":"Rakhmawati Farma, Amalia Apriliani Putri, Irma Apriyani","doi":"10.31258/jkfi.19.1.19-24","DOIUrl":"https://doi.org/10.31258/jkfi.19.1.19-24","url":null,"abstract":"Snake fruit midrib (SFM) biomass has the potential to be used as a precursor material for making carbon electrodes because it has a high lignocellulosic content for supercapacitor applications. Carbon electrodes were made from snake fruit midrib biomass using a pre-carbonization process at 200 °C, chemical activation with 0.1 M KOH as an activating agent, a carbonization process with temperature variations of 500 °C, 600 °C, and 700 °C using N 2 gas, and a physical activation process at 800 °C with CO 2 gas. Thermogravimetric analysis shows the thermal resistance temperature of carbon powder is 317.1 °C. Analysis of the electrochemical properties of supercapacitor cells from snake fruit midrib obtained specific capacitance values of 123.23 F/g, 169.05 F/g, and 213.27 F/g for samples SFM-500, SFM-600, and SFM-700, respectively. The results showed that 700 °C was the best carbonization temperature for carbon electrodes from snake fruit midrib.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115881871","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
ANALISA SENSITIVITAS SENSOR TGS PADA HIDUNG ELEKTRONIK UNTUK IDENTIFIKASI GANODERMA DI BAGIAN AKAR KELAPA SAWIT 分析TGS传感器在电子鼻子上的敏感度，以识别油棕根部的甘草瘤
Komunikasi Fisika Indonesia Pub Date : 2022-03-31 DOI: 10.31258/jkfi.19.1.1-6
Mhd Feri Desfri, M. Minarni, Dewi Laila Sari, Dewi Anjarwati Mahmudah, Ihsan Okta Harmailil, I. Cahyadi
{"title":"ANALISA SENSITIVITAS SENSOR TGS PADA HIDUNG ELEKTRONIK UNTUK IDENTIFIKASI GANODERMA DI BAGIAN AKAR KELAPA SAWIT","authors":"Mhd Feri Desfri, M. Minarni, Dewi Laila Sari, Dewi Anjarwati Mahmudah, Ihsan Okta Harmailil, I. Cahyadi","doi":"10.31258/jkfi.19.1.1-6","DOIUrl":"https://doi.org/10.31258/jkfi.19.1.1-6","url":null,"abstract":"Palm oil is one of the main commodities for Indonesia. It is important to identify the disease-causing the decline in productivity. Root rot disease that causes total damage to oil palm plants due to fungal infection G. boninense sp has volatile organic compounds that can be detected using an electronic nose. The electronic nose system is designed with 6 sensor arrays, namely TGS 2612, TGS 822, TGS 2611, TGS 2610, TGS 813, and TGS 2620 which are sensitive to certain VOC compounds. The sample used was infected and uninfected oil palm seedlings aged 4 months. The detection process is carried out on plant roots. Python program is used as a data acquisition system in voltage retrieval. The obtained voltage is processed and further analyzed using a trapezoidal area to determine the sensor response in the identification of Ganoderma. The results of processing using a trapezoidal plane show that TGS 2611 has a very good response. The TGS 2611 sensor has a higher trapezoidal area in identifying oil palm plants that are attacked by Ganoderma with 4 classifications, namely healthy, moderate, sick, and severe.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"204 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123322296","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
PENGGUNAAN METODE GEOLISTRIK RESISTIVITAS KONFIGURASI SCHLUMBERGER UNTUK MENGETAHUI LAPISAN STRUKTUR LITOLOGI BAWAH TANAH DI TAMAN ILMU UNIVERSITAS RIAU 施伦贝谢对排版结构的使用，以了解廖内大学科学系的地下岩层结构
Komunikasi Fisika Indonesia Pub Date : 2022-03-31 DOI: 10.31258/jkfi.19.1.35-38
Aprianturi Rega, Usman Malik
{"title":"PENGGUNAAN METODE GEOLISTRIK RESISTIVITAS KONFIGURASI SCHLUMBERGER UNTUK MENGETAHUI LAPISAN STRUKTUR LITOLOGI BAWAH TANAH DI TAMAN ILMU UNIVERSITAS RIAU","authors":"Aprianturi Rega, Usman Malik","doi":"10.31258/jkfi.19.1.35-38","DOIUrl":"https://doi.org/10.31258/jkfi.19.1.35-38","url":null,"abstract":"Research has been carried out at the Science Park, Riau University to determine the layers of underground lithological structures using the one-dimensional Schlumberger configuration Geoelectric resistivity method. Research data processing is done using Software Progress. The results of data processing show that lanes 1 and 2 consists of layers of alluvium, sand, gravel, and clay. On track 1, the highest soil layer resistivity value of 863.14 m is interpreted as a layer of sand and gravel at a depth of 2.28 - 31.12 m, while the smallest is 226.90 m which can be interpreted as a layer of clay at a depth of 0.68 - 1.28 m. On track 2, the highest soil layer resistivity value of 1027.83 m is interpreted as a layer of sand and gravel at a depth of 0.28 - 1.15 m, while the smallest is 188.08 m interpreted as a clay layer at a depth of 0 - 0.28 m. The highest and lowest resistivity values tend to be identified as sand, gravel, and clay, respectively.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"958 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123316945","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
PEMBUATAN ELEKTRODA KARBON DARI BIOMASSA SABUT KELAPA MUDA DENGAN AKTIVATOR KOH SEBAGAI APLIKASI SEL SUPERKAPASITOR 制造年轻椰壳生物质能的碳电极，具有高活动电容器应用程序
Komunikasi Fisika Indonesia Pub Date : 2022-03-31 DOI: 10.31258/jkfi.19.1.45-50
Zurya Hanifa, Awitdrus Awitdrus
{"title":"PEMBUATAN ELEKTRODA KARBON DARI BIOMASSA SABUT KELAPA MUDA DENGAN AKTIVATOR KOH SEBAGAI APLIKASI SEL SUPERKAPASITOR","authors":"Zurya Hanifa, Awitdrus Awitdrus","doi":"10.31258/jkfi.19.1.45-50","DOIUrl":"https://doi.org/10.31258/jkfi.19.1.45-50","url":null,"abstract":"The supercapacitor is a storage device consisting of carbon electrodes, separator, electrolyte, and current collector. Carbon electrodes made from young coconut coir biomass with a mass ratio of 1:0.20 KOH activator have been successfully fabricated with a carbonization temperature of 550 °C and a physical activation temperature of 750 °C. Characterization of physical properties by measuring the density value showed that before and after pyrolysis decreased due to KOH activating agent. Furthermore, the electrochemical characterization using the voltammetry cyclic method showed the specific capacitance value to the scanning rate, where the highest specific capacitance value was 163.14 F/g with a scanning rate of 1 mV/s.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115683608","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
ANALISA DISTRIBUSI DOSIS PADA FANTOM HOMOGEN DAN INHOMOGEN DENGAN SIMULASI MONTE CARLO 与蒙特卡洛仿真同源和异同同剂量的分布分析
Komunikasi Fisika Indonesia Pub Date : 2022-03-31 DOI: 10.31258/jkfi.19.1.39-44
Sitti Yani
{"title":"ANALISA DISTRIBUSI DOSIS PADA FANTOM HOMOGEN DAN INHOMOGEN DENGAN SIMULASI MONTE CARLO","authors":"Sitti Yani","doi":"10.31258/jkfi.19.1.39-44","DOIUrl":"https://doi.org/10.31258/jkfi.19.1.39-44","url":null,"abstract":"Monte Carlo simulation with electron gamma shower (EGSnrc) code can produce 3-dimensional dose distribution data. The percent depth dose curve (PDD), dose profile, and isodose curve can be extracted through this 3-dimensional data. In this study, a photon source with an energy of 2 MeV is placed at the source to surface distance (SSD) from the phantom surface by adjusting the collimator aperture which is used to control the size of the exposure field. The SSD distance was varied at a distance of 50 cm, 70 cm, 80 cm, 90 cm, and 100 cm. The size of the exposure area is also varied by 2 × 2 cm 2 , 5 × 5 cm 2 , 7 × 7 cm 2 , and 10 × 10 cm 2 . The dose distribution analysis was carried out on homogeneous phantoms containing water and inhomogeneous phantoms containing tissue/bone/lung/bone/tissue material. The PDD curve and dose profile represent dose changes with depth and x or y direction, respectively. The PDD curve on a homogeneous phantom shows an increase in the value on the surface of the phantom to the depth with the maximum dose. This curve then decreases gradually with increasing depth. Inhomogeneous ghosts show spikes in the border region of the two media with different densities. This is due to the contribution of the backscattered electrons generated by the bone media and into the tissue media. This phenomenon is also seen in the isodose curve for inhomogeneous phantoms.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116895428","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
ANALISA SIFAT FISIS NANOPARTIKEL ZnO DI-DOPING Ag YANG DISINTESIS MENGGUNAKAN METODE BIOSINTESIS 利用生物合成方法合成ZnO - dag纳米粒子的裂变性质
Komunikasi Fisika Indonesia Pub Date : 2022-03-31 DOI: 10.31258/jkfi.19.1.7-10
Rita Meldayani, Iwantono Iwantono, Ari Sulistyo Rini, Yolanda Rati
{"title":"ANALISA SIFAT FISIS NANOPARTIKEL ZnO DI-DOPING Ag YANG DISINTESIS MENGGUNAKAN METODE BIOSINTESIS","authors":"Rita Meldayani, Iwantono Iwantono, Ari Sulistyo Rini, Yolanda Rati","doi":"10.31258/jkfi.19.1.7-10","DOIUrl":"https://doi.org/10.31258/jkfi.19.1.7-10","url":null,"abstract":"Nanotechnology is developing rapidly with a variety of synthetic materials, apart from the perceived work efficiency, which is also prioritized in terms of safety and non-toxicity. The synthesis that has the potential to be carried out based on these criteria is the type of Ag-doped ZnO nanoparticles. ZnO nanoparticles were prepared by a biosynthetic method using pineapple peel extract as a reducing agent. This study aims to look at the effect of adding Ag to ZnO nanoparticles. The percentage variation of Ag to ZnO is 1%, 3%, and 5%. The pineapple peel extract was mixed with 0.05 M (Zn(NO 3 ) 2 )·6H 2 O and 0.05 M AgNO 3 precursor solutions. The solution was heated at 80 °C for 2 hours. The results of the biosynthesis were characterized using Spectroscopy UV-Vis, X-ray diffraction (XRD), and scanning electron microscopy (SEM). The UV-Vis spectrum informs that strong absorption occurs at wavelengths below 400 nm. The maximum absorption is shown by sample ZnO:Ag 3% and the minimum absorption is shown by the pure ZnO sample. XRD characterization showed that the formation of seven diffraction peaks occurs at a diffraction angle (2θ) of: 31.729°; 34,397°; 36,214°; 47,467°; 56,541°; 62.831°; and 67.922°. The SEM results showed surface morphology of ZnO and ZnO:Ag 1% samples are floral and spherical, while ZnO:Ag 3% and ZnO:Ag 5% samples are coral rocks.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115328612","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
PENGGUNAAN PEMODELAN SUMBER PLASMA HELIUM PADA KEADAAN SETIMBANG UNTUK APLIKASI PLAK GIGI 在牙菌斑应用的同步状态下使用氦气等离子体资源建模
Komunikasi Fisika Indonesia Pub Date : 2022-03-31 DOI: 10.31258/jkfi.19.1.11-18
Nandita Devira, Toto Saktioto
{"title":"PENGGUNAAN PEMODELAN SUMBER PLASMA HELIUM PADA KEADAAN SETIMBANG UNTUK APLIKASI PLAK GIGI","authors":"Nandita Devira, Toto Saktioto","doi":"10.31258/jkfi.19.1.11-18","DOIUrl":"https://doi.org/10.31258/jkfi.19.1.11-18","url":null,"abstract":"","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116295113","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 HEWAN BERDASARKAN POLA AKUSTIK DENGAN PRINSIP EKSTRAKSI WAVELET DAN KLASIFIKASI MULTI-LABEL JARINGAN SYARAF TIRUAN 动物识别是基于声学模式的提取过程原理和模拟神经组织的多标签分类
Komunikasi Fisika Indonesia Pub Date : 2022-03-31 DOI: 10.31258/jkfi.19.1.51-56
Defrianto Defrianto, Titrawani Titrawani, L. Umar, Vepy Asyana
{"title":"IDENTIFIKASI HEWAN BERDASARKAN POLA AKUSTIK DENGAN PRINSIP EKSTRAKSI WAVELET DAN KLASIFIKASI MULTI-LABEL JARINGAN SYARAF TIRUAN","authors":"Defrianto Defrianto, Titrawani Titrawani, L. Umar, Vepy Asyana","doi":"10.31258/jkfi.19.1.51-56","DOIUrl":"https://doi.org/10.31258/jkfi.19.1.51-56","url":null,"abstract":"An acoustic identification and classification system of frogs has been designed based on the principle of wavelet extraction and label classification using an artificial neural network (ANN). This system consists of electronic detection for frog audio as well as an interface using the MATLAB 2018b software as an ANN provider device. As input for the neural network, 5 types of frogs were used, namely the rock frog (Limnonectes macrodon), the blentung frog (Kaloula baleata), the hip frog (Limnonectesblythii), the rice field frog (Fejervarya cancrivora), and the trench frog. frog. frog (Fejervarya limnocharis). ), each with 12 sound samples. Before being inserted into the neural network, 3 levels of sound samples were extracted and denoised using wavelet symlet 3. Furthermore, in the neural network training process, 3 validation samples and 3 test samples were used. After training, the artificial neural network was able to identify the type of frog being tested.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115899349","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
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