cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota surabaya,
Jawa timur
INDONESIA
JFA (Jurnal Fisika dan Aplikasinya)
Published by Institut Teknologi Sepuluh Nopember Surabaya
ISSN : 1858036X     EISSN : 24604682     DOI : -
Core Subject : Science,
Physics
JFA (Jurnal Fisika dan Aplikasinya, Abbreviation: J.Fis. dan Apl.) hanya menerbitkan artikel penelitian asli serta mengulas artikel tentang topik seputar bidang fisika (fisika teori, material, optik, instrumentasi, geofisika) dan aplikasinya. Naskah yang dikirimkan ke JFA belum pernah diterbitkan ditempat lain serta tidak dalam proses pertimbangan untuk diterbitkan ditempat lain, dalam bahasa apapun. Studi teoritis, eksperimental, dan praktis sama-sama didorong, seperti juga artikel interdisipliner dan yang timbul dari penelitian dan kolaborasi industri.
Arjuna Subject : -
Articles 604 Documents
 43   44   45   46   47 
Effect of Temperature and CaCO3 Concentration on the CO2 Corrosion Behavior of Carbon Steel in Seawater: Zaenal Arifin, Yoyok Cahyono, Sri Yani Purwaningsih, Suasmoro Suasmoro, Zainul Asrori Zaenal; Yoyok Cahyono Cahyono; Sriyani Purwaningsih Purwaningsih; Zainul Asrori Asrori
Jurnal Fisika dan Aplikasinya Vol 21 No 1 (2025): January 2025 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v21i1.2714

Abstract

In oil and gas production, CO2 corrosion and CaCO3 scale happen simultaneously. Research has been carried out on the corrosion behavior of CO2 on carbon steel samples. Corrosion behavior was analyzed based on changes in temperature (60, 80 and 100 °C) and CaCO3 concentration (0, 700 and 1000 ppm) in seawater environments with CO2 gas at a flow rate of 1 lt/min. The corrosion rate calculation is carried out using the weight loss method. Increasing the concentration of CaCO3 in seawater causes a decrease in the corrosion rate and the greatest corrosion rate occurs at 80 °C. Characterization of corrosion products from deposited powder using XRD and SEM at various temperature changes produces crusts with aragonite, calcite and halite phases. Meanwhile, variations in CaCO3 concentration produce aragonite phases as well as siderite and chukanovite corrosion products with morphologies such as rice grains, rhombohedral, needle-like and plate-like
Viscosity Modeling and Prediction of Amorphophallus oncophyllus and Sapindus rarak Using Machine Learning Methods: Muhammad Taufiq Fathaddin, Dwi Atty Mardiana, Andrian Sutiadi, Fajri Maulida Muhammad Taufiq Fathaddin Fathaddin; Dwi Atty Mardiana Mardiana; Andrian Sutiadi Sutiadi; Fajri Maulida Maulida
Jurnal Fisika dan Aplikasinya Vol 21 No 1 (2025): January 2025 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v21i1.2715

Abstract

Viscosity plays an important role in regulating the mobility of fluids injected into the reservoir to increase the efficiency of oil sweeping. This study discusses the application of Machine Learning methods, namely ANN and ANFIS, to model the correlation of physical properties of Amorphophallus oncophyllus and Sapindus rarak solutions. The purpose of this study is to obtain a correlation to determine the viscosity of the polymer solutions. The data used include viscosity measurements for 21 samples of Amorphophallus oncophyllus and Sapindus rarak solutions with variations in concentration and salinity. The data is augmented by digitization for modeling. The results show that both Machine Learning methods can estimate viscosity values well. Very accurate results are achieved by applying ANN and ANFIS with average correlation coefficients of 0.997240 and 0.995124, respectively.
Comparison of Supervised Learning Algorithms for Cigarette and Vape Smoke Classification Using Electronic Nose: Muhammad Agung Farghani, Nurul Izzah Wijayakusuma, Budi Sumanto Muhammad Agung Farghani Farghani; Nurul Izzah Wijayakusuma Wijayakusuma; Budi Sumanto Sumanto
Jurnal Fisika dan Aplikasinya Vol 20 No 3 (2024): October 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i3.17939

Abstract

This research discusses applying the Supervised Learning method using Electronic Nose to classify the types of cigarette and vape smoke in the air. Electronic Nose is used as a scent detector that can identify the characteristics of smoke from both sources. Three Supervised Learning algorithms, namely KNN, SVM, and Decision Tree, were applied to compare the performance in classifying smoke types. The data comprised reference air samples, air contaminated by manufactured cigarette smoke, rolled cigarettes, and vape. The results showed that all three Supervised Learning algorithms successfully provided an excellent classification for cigarette and vape smoke types using data from Electronic Nose. The best accuracy result was achieved by SVM, with an accuracy rate of 96.55%. This research contributes to identifying sources of air pollution that have the potential to endanger human health
Hydrothermal Identification Based on Rock Resistivity Value Using Dipole-dipole Configuration Geoelectric Method In Lemeu Village, Lebong Regency, Bengkulu Province: Ripal Zamrawi, Suhendra Suhendra, Halauddin Halauddin, Rendoza Rendoza, Aisyah Cindy Phylia Putri, Usman Gumanty, Wahyu Cahyadi Setiawan Ripal Zamrawi Zamrawi; Suhendra Suhendra; Halauddin, Rendoza Rendoza; Aisyah Cindy Phylia Putri Phylia Putri; Usman Gumanty Gumanty; Wahyu Cahyadi Setiawan Setiawan
Jurnal Fisika dan Aplikasinya Vol 20 No 3 (2024): October 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i3.21623

Abstract

Geothermal potential is identical to the presence of volcanoes as reservoir sources, but hydrothermal sources are rarely found in places that are not associated with volcanoes and faults. One of the areas where there is a hydrothermal system located in Lemeu Village has not yet been studied. This research was conducted in November 2023 and data collection was carried out around the hot springs of Lemeu Village, Lebong Regency, Bengkulu Province.
Analysis of the Effect of Porosity on the Acoustic and Elastic Properties of Materials Using Ultrasonic Immersion Pulse-Echo Technique: Sri Maiyena, Anis Nazihah Mat Daud, Shahrul Kadri Ayop Sri Maiyena Maiyena; Anis Nazihah Mat Daud Mat Daud; Shahrul Kadri Ayop Ayop
Jurnal Fisika dan Aplikasinya Vol 20 No 3 (2024): October 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i3.20656

Abstract

The material properties is an important aspect in determining the potential application of a material. Hence, this study is carried out to determine the effect of porosity on the material properties (acoustic properties and elastic properties) of material using the pulse echo immersion ultrasonic technique. This study comprises of two acoustic properties (longitudinal velocity and acoustic impedance) and five elastic properties (Young's modulus, shear modulus, bulk modulus, longitudinal modulus and Lamé constant). Two types of PMMA samples are used for this study; nonporous sample and porous sample. The result indicated that the material properties (acoustic properties and elastic properties) of porous sample are less than the material properties of non-porous sample. It indicated that the porosity gives significant effect towards the material properties.
Groundwater Identification using the Resistivity Geoelectric Method in Plalangan Village, Kalisat Subdistrict, Jember: Aminatus Sa'diah, Firdha Kusuma Ayu Anggraeni, Yushardi Yushardi Aminatus Sadiah Sadiah; Firdha Kusuma Ayu Anggraeni Ayu Anggraeni; Yushardi Yushardi
Jurnal Fisika dan Aplikasinya Vol 20 No 3 (2024): October 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i3.20281

Abstract

Water is a source of basic needs that is needed by all living things including humans. Palalangan Village, Kalisat Subdistrict is one of the areas that often experiences drought during the dry season, resulting in a water crisis that will hamper the daily activities of the population. The purpose of this study is to determine the subsurface lithological structure based on rock resistivity values and groundwater potential using the resistivity geoelectric method in Palalangan Village, Kalisat District. The research was conducted experimentally in the field using the wenner-schlumberger configuration resistivity geoelectric method to obtain primary data in the form of field measurement data and collect relevant literature studies to obtain secondary data. The results showed that from the first pass to the fifth pass consisted of groundwater material, sandstone, claystone, passive silt soil, gravel, sand, and dry gravel. 
Analysis of Glucomannan Molecule in Porang (Ammorphophallus Muelleri Blume) Flour using Nuclear Magnetic Resonance: Ivan Rizoputra, Sriati Wahyudi, Niniek Fajar Puspita, Risdiana Risdiana, Darminto Darminto Ivan Rizoputra Ivan Rizoputra; Sriati Wahyudi Sriati Wahyudi; Niniek Fajar Puspita Niniek Fajar Puspita; Risdiana Risdiana; Darminto Darminto
Jurnal Fisika dan Aplikasinya Vol 20 No 3 (2024): October 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i3.21753

Abstract

The porang tuber (Ammorphophallus Muelleri Blume) is a bulb plant belonging to the Araceae family, which contains the polysaccharide substance of glucomannan. In this work, the porang flour has been purified from tubers by a centrifugation method. To study the content of compounds and types of molecules that make up glucomannan, characterization was carried out using 1H and 13C nuclear magnetic resonance (NMR). The analysis on chemical shift data from both NMR spectra can be concluded that glucomannan in porang is more dominantly constructed by glucose molecules rather than mannose. From these results, it is also known that the toxic compound Ca-oxalate which is part of the porang compound has been reduced during the centrifugation process.
Optimization of Audio System Wireles Transmitter Using Green Laser: Nurrisma Puspitasari, Adnan Wahyu Dwiputra, Sudarsono Sudarsono, Gatut Yudoyono, Gontjang Prajitno, Bachtera Indarto Nurrisma Puspitasari Nurrisma Puspitasari; Adnan Wahyu Dwiputra Adnan Wahyu Dwiputra; Sudarsono Sudarsono; Gatut Yudoyono Gatut Yudoyono; Gontjang Prajitno Gontjang Prajitno; Bachtera Indarto Bachtera Indarto
Jurnal Fisika dan Aplikasinya Vol 20 No 3 (2024): October 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i3.21861

Abstract

Nowadays, many activities are done digitally using wireless technology. Wireless technology is the mainstay of communication, but along with the development of the times, there is a wireless technology that utilizes LASER. There has been quite a lot of research on audio systems with wireless transmitters, but none have analyzed the potential of green lasers to obtain the optimal wavelength for communication. This study aims to design a voice transmission system using a laser, determine the relationship between input voltage and laser light intensity, and compare the output frequency with the input frequency. There are three types of measurements: light intensity and distance, laser diode voltage and intensity, and output frequency compared to input frequency. The audio input signal from the source is modulated and transmitted through a laser light medium. The laser beam is then fired into a receiver circuit that can demodulate the signal which is then sent to the output device in the form of a speaker. The study found that the output frequency had the highest error percentage of 38.70% at 125 Hz and the lowest error percentage of 0.07% at 500 Hz when compared to the input frequency. The biggest mistake comes from the volume dropping at a low frequency. The oscilloscope reading is not accurate due to the smaller volume, which leads to a high deviation value and affects the system performance negatively.
Design of Arduino Uno-Based Height and Weight Measuring Instrument for Initial Screening of Stunting Cases: Talitha Nabila Hayuningclara, Wahyu Sugianto, and Amalia Cemara Nur ’Aidha Talitha Nabila Hayuningclara Talitha Nabila Hayuningclara; Wahyu Sugianto Wahyu Sugianto; Amalia Cemara Nur ’Aidha Amalia Cemara Nur ’Aidha
Jurnal Fisika dan Aplikasinya Vol 20 No 2 (2024): June 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i2.20400

Abstract

Monitoring nutritional status in toddlers is very important because it can be an early indicator of possible health problems in children. Currently, the process of monitoring children's nutrition is generally still carried out manually, which not only takes longer but is also less efficient in practice. To overcome the limitations of conventional measuring devices, a digital measuring device for height and weight was designed. This tool displays the results of height and weight measurements simultaneously on an LCD (liquid crystal display) screen. This tool works with uses an Arduino microcontroller as a control center and uses electronic sensors, namely the HC-SR07 ultrasonic sensor to measure height and the HX711 loadcell sensor to measure weight. From the data obtained, the error value and accuracy of the loadcell sensor after calibration produced an error value of 6.24% and an accuracy of 93.76%. Meanwhile, the ultrasonic sensor test results after the calibration process produced an error value of 0.052% and an accuracy of 99.94%.
The Influence of Australian Monsoon Winds on Simultaneous Occurrence of Mountain Waves in Central Java and East Java: Rahmat Alpentido, Aries Kristianto Rahmat Alpentido Rahmat Alpentido; Aries Kristianto Aries Kristianto
Jurnal Fisika dan Aplikasinya Vol 20 No 2 (2024): June 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i2.18883

Abstract

Mountain waves are a phenomenon that had occurred due to the interaction of laminar flow in the atmosphere with the contours of the mountains. These waves had been characterized by the presence of lenticular clouds that had formed at the mountain peaks. On the 5th of November 2020, lenticular clouds had formed simultaneously in East and Central Java. During the same period, Australian Monsoon was still active in Java region. Based on these two phenomena, this research had investigated the influence of the Australian Monsoon on the process of mountain wave formation in Central Java and East Java using FNL data. The processing had been carried out using WRF-ARW with resolutions of 9, 3, and 1 km. The results had shown the presence of easterly winds that had affected the atmospheric stability of the Central Java and East Java regions, characterized by the formation of laminar flow, with the formation of laminar flow occurring first in the East Java region. The model output results for potential temperature parameters and visualizations had shown stable atmospheric conditions from the 4th to the 6th of November. The parameter of vertical wind speed had indicated the presence of mountain wave fluctuations in all regions.

Page 45 of 61 | Total Record : 604

 43   44   45   46   47 

Filter by Year

2005 2025


Reset
Filter By Issues
All Issue Vol 21 No 3 (2025): Okt 2025 Edition Vol 21 No 2 (2025): June 2025 Edition Vol 21 No 1 (2025): January 2025 Edition Vol 21, No 3 (2025) Vol 21, No 2 (2025) Vol 21, No 1 (2025) Vol 20 No 3 (2024): October 2024 Edition Vol 20 No 2 (2024): June 2024 Edition Vol 20 No 1 (2024): January 2024 Edition Vol 20, No 3 (2024) Vol 20, No 2 (2024) Vol 20, No 1 (2024) Vol 19 No 3 (2023): October 2023 Edition Vol 19 No 2 (2023): June 2023 Edition Vol 19 No 1 (2023): January 2023 Edition Vol 19, No 3 (2023) Vol 19, No 2 (2023) Vol 19, No 1 (2023) Vol 18 No 3 (2022): October 2022 Edition Vol 18 No 2 (2022): Juni 2022 Edition Vol 18 No 1 (2022): January 2022 Edition Vol 18, No 3 (2022) Vol 18, No 2 (2022) Vol 18, No 1 (2022) Vol 17 No 3 (2021): October 2021 Edition Vol 17 No 2 (2021): June 2021 Edition Vol 17 No 1 (2021): January 2021 Edition Vol 17, No 3 (2021) Vol 17, No 2 (2021) Vol 17, No 1 (2021) Vol 16 No 3 (2020): October 2020 Edition Vol 16 No 2 (2020): June 2020 Edition Vol 16 No 1 (2020): January 2020 Edition Vol 16, No 3 (2020) Vol 16, No 2 (2020) Vol 16, No 1 (2020) Vol 15 No 3 (2019): October 2019 Edition Vol 15 No 2 (2019): June 2019 Edition Vol 15 No 1 (2019): January 2019 Edition Vol 15, No 3 (2019) Vol 15, No 2 (2019) Vol 15, No 1 (2019) Vol 15, No 1 (2019) Vol 14 No 3 (2018): October 2018 Edition Vol 14 No 2 (2018): June 2018 Edition Vol 14 No 1 (2018): January 2018 Edition Vol 14, No 3 (2018) Vol 14, No 2 (2018) Vol 14, No 1 (2018) Vol 13 No 3 (2017): October 2017 Edition Vol 13 No 2 (2017): June 2017 Edition Vol 13 No 1 (2017): January 2017 Edition Vol 13, No 3 (2017) Vol 13, No 2 (2017) Vol 13, No 1 (2017) Vol 12, No 3 (2016) Vol 12, No 2 (2016) Vol 12, No 1 (2016) Vol 11, No 3 (2015) Vol 11, No 2 (2015) Vol 11, No 1 (2015) Vol 10, No 3 (2014) Vol 10, No 2 (2014) Vol 10, No 1 (2014) Vol 9, No 3 (2013) Vol 9, No 2 (2013) Vol 9, No 1 (2013) Vol 9, No 1 (2013) Vol 8, No 2 (2012) Vol 8, No 1 (2012) Vol 7, No 2 (2011) Vol 7, No 1 (2011) Vol 6, No 2 (2010) Vol 6, No 1 (2010) Vol 5, No 2 (2009) Vol 5, No 1 (2009) Vol 4, No 2 (2008) Vol 4, No 1 (2008) Vol 3, No 2 (2007) Vol 3, No 1 (2007) Vol 2, No 2 (2006) Vol 2, No 2 (2006) Vol 2, No 1 (2006) Vol 1, No 2 (2005) Vol 1, No 1 (2005) More Issue