cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Utama Alan Deta
Contact Email
utamadeta@unesa.ac.id
Phone
+628993751753
Journal Mail Official
jpfa@unesa.ac.id
Editorial Address
Fakultas Matematika dan Ilmu Pengetaahuan Alam Jl. Ketintang, Gd C3 Lt 1, Surabaya 60231
Location
Kota surabaya,
Jawa timur
INDONESIA
Jurnal Penelitian Fisika dan Aplikasinya (JPFA)
Published by Universitas Negeri Surabaya
ISSN : 20879946     EISSN : 24771775     DOI : https://doi.org/10.26740/jpfa
Core Subject : Science, Education,
Astronomy Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) is available for free (open access) to all readers. The articles in JPFA include developments and researches in Physics Education, Classical Physics, and Modern Physics (theoretical studies, experiments, and its applications), including: Physics Education (Innovation of Physics Learning, Assessment and Evaluation in Physics, Media of Physics, Conception and Misconceptions in Physics, hysics Philosophy anPd Curriculum, and Psychology in Physics Education); Instrumentation Physics and Measurement (Sensor System, Control System, Biomedical Engineering, Nuclear Instrumentation); Materials Science (Synthesis and Characteristic Techniques, Advanced Materials, Low Temperature Physics, and Exotic Material); Theoretical and Computational Physics (High Energy Physics, Gravitation and Cosmology, Astrophysics, Nuclear and Particle Phenomenology, and Computational and Non-Linear Physics); and Earth Sciences (Geophysics and Astronomy).
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 440 Documents
 37   38   39   40   41 
Front Cover JPFA Vol 10 No 1 June 2020 Editor JPFA
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 10 No. 1 (2020)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v10n1.pi

Abstract

Back Cover JPFA Vol 10 No 1 June 2020 Editor JPFA
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 10 No. 1 (2020)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v10n1.pix

Abstract

Front Cover JPFA Vol 10 No 2 December 2020 Editor JPFA
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 10 No. 2 (2020)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v10n2.pi

Abstract

Introduction, Author Guidlines, and Table of Contents JPFA Vol 10 No 2 December 2020 Editor JPFA
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 10 No. 2 (2020)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v10n2.pii-vi

Abstract

Acknowledgment JPFA Vol 10 No 2 December 2020 Editor JPFA
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 10 No. 2 (2020)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v10n2.pvii-viii

Abstract

Back Cover JPFA Vol 10 No 2 December 2020 Editor JPFA
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 10 No. 2 (2020)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v10n2.pix

Abstract

A New Model to Calculate Stress Relaxation of Viscoelastic Material for Polyester-Wool-Spandex Yarn with Analytical Mechanics Approach Valentinus Galih Vidia Putra; Juliany Ningsih Mohamad; Yusril Yusuf
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 11 No. 2 (2021)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v11n2.p94-105

Abstract

Many researchers have studied the mechanical properties of yarn in textile science because mechanical properties are the essential parameter in determining yarn quality. This research aims to make a new model and prediction of the material properties of textile yarns, especially for stress relaxation of viscoelastic textile yarn for polyester-wool-spandex yarn cases. In this research, a new approximation of the analytical mechanics model of stress relaxation using a system of four springs and a dashpot to determine viscoelastic yarn properties as polyester-wool-spandex has been studied. A yarn movement equation for viscoelastic yarn as polyester-wool-spandex having 36 yarn count number (in unit tex or g/km) has been formulated using analytical mechanics, and the model has been validated experimentally. The coefficient of determination R2 ranges from 0.82, which shows the closeness between the experimental results and the theoretical predictions. In this research, it is found that this model can be implemented to determine the viscoelastic material of yarn based on the properties of yarn as stress relaxation using the analytical mechanics approach.  
Coulomb Stress Change of the 2004 Aceh Earthquake on Mount Sorik Marapi 2021 Goldberd Harmuda Duva Sinaga; Martha Rianna Tambunan; Agoez Loeqman; Adhi Wibowo
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 11 No. 2 (2021)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v11n2.p158-170

Abstract

Sorik Marapi is an active volcanic mountain with an altitude of 2,145 meters located in Batang Gadis National Park, Sibanggor Julu Village, Mandailing Natal Regency, North Sumatra, Indonesia. Since the earthquake in Aceh on December 26, 2004, geological conditions in the western part of Sumatra Island have increased in stress. This affects the volcano in Sumatra, Mount Sorik Marapi, so it needs to be studied to find out the condition of changes in coulomb stress in Sorik Marapi. The method used in this study is a descriptive method with an analysis of the coulomb stress method. From the Aceh earthquake year of December 2004 to 2021, Mount Sorik Marapi experienced the highest average increase in coulomb stress in 2012, which was 0.171 bars. The highest average increase in shear in 2015 was 0.25 bars, and the highest average normal increase in 2018 was 0.202 bars. While at depth, Sorik Marapi mountain experienced an average change in coulomb stress highest of 0.368 bars, the average increase in the highest shear by 0.269 bars, and the average normal increase of 0.246 bars. All such increases are at a depth of 90 km below sea level. Based on the results of this study, it is stated that Mount Sorik Marapi experiences inconsistent changes in coulomb stress every year.
Effect of Nanoparticle Ag on Wet Accumulator Performance Febri Rismaningsih; Januar Widakdo
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 11 No. 2 (2021)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v11n2.p138-147

Abstract

Energy is the most important and inevitable requirement for humankind. The increasing energy demand has been connected with technological advances and population growth. One of the world's most serious problems is providing sustainable energy. New alternative energy sources and renewable energy technologies have become notable research subjects due to the wide availability of renewable energy sources in the world. However, most renewable energy sources do not provide uninterrupted energy to consumers. This study aims to determine the resistance of the Ag nanoparticle using the UV-Vis spectrophotometer test. It determines the wavelength of Ag absorption, the output voltage characteristics, and the light intensity of the lamp produced from a wet accumulator with the addition of Ag nanoparticles. This research was started by making a solution of Ag nitrate (AgNO3) and a trisodium citrate (Na3C6H5O7) solution, then synthesizing Ag nanoparticles with a concentration of 3 mM, 4 mM, and 5 mM about 2 ml using the bottom-up method and chemical reduction. The results showed that Ag nanoparticles were suitable for use within three days and the Ag absorption wavelength was 328.1 nm. The output voltage on the wet accumulator without adding Ag nanoparticles lasts longer than the accumulator added by Ag nanoparticles. It can be seen clearly from the speed at which the voltage drops. For the light intensity produced by the pure wet accumulator, the H2SO4 solution was measured to be great and went out longer than the wet accumulator added with Ag nanoparticles. This research concluded that Ag nanoparticles with a concentration of 3 mM, 4 mM, and 5 mM in the H2SO4 solution reduce the performance of the wet accumulator.  
Analyzing Simplified BWR Inherent Safety System using IAEA Generic Boiling Water Reactor Simulator Arby Nuryana; Rida Siti Nur'aini Mahmudah
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 11 No. 2 (2021)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v11n2.p114-126

Abstract

The inherent safety of boiling water reactors (BWR) has been a vital research topic in the past decades. This study aimed to observe and analyze the simplified BWR inherent safety system incorporated in IAEA Generic BWR Simulator. This simulator represents important features of BWR and provides graphical information and real-time simulation data. The simulated BWR has 1300 MWe power with ABWR-type containment. To analyze its inherent safety system, three conditions are simulated, i.e., normal condition at 100% power, transient condition (feedwater pumps trip), and emergency condition (loss of coolant accident—LOCA). The simulations were performed for up to 30 minutes since the most critical events in all conditions occurred within that time frame. Sequences of transient and emergency conditions were described in detail with the help of an additional screen recorder and time counting software. Results of several parameters in all simulation conditions were compared and analyzed. It was concluded that the simulator could simulate the normal, transient, and emergency conditions and the simplified version of the BWR inherent safety system.

Page 39 of 44 | Total Record : 440

 37   38   39   40   41 

Filter by Year

2011 2025


Reset
Filter By Issues
All Issue Vol. 15 No. 1 (2025) Vol. 14 No. 2 (2024) Vol. 14 No. 1 (2024) Vol. 13 No. 2 (2023) Vol. 13 No. 1 (2023) Vol. 12 No. 2 (2022) Vol. 12 No. 1 (2022) Vol. 11 No. 2 (2021) Vol. 11 No. 1 (2021) 2021: Articles in Press Vol. 10 No. 2 (2020) Vol 10, No 2 (2020) Vol 10, No 1 (2020) Vol 10, No 1 (2020): Articles in Press Vol. 10 No. 1 (2020) Vol. 9 No. 2 (2019) Vol 9, No 2 (2019) Vol 9, No 1 (2019) Vol. 9 No. 1 (2019) Vol 8, No 2 (2018) Vol. 8 No. 2 (2018) Vol 8, No 1 (2018) Vol. 8 No. 1 (2018) Vol 7, No 2 (2017) Vol. 7 No. 2 (2017) Vol. 7 No. 1 (2017) Vol 7, No 1 (2017) Vol. 6 No. 2 (2016) Vol 6, No 2 (2016) Vol. 6 No. 1 (2016) Vol 6, No 1 (2016) Vol 5, No 2 (2015) Vol. 5 No. 2 (2015) Vol 5, No 1 (2015) Vol. 5 No. 1 (2015) Vol. 4 No. 2 (2014) Vol 4, No 2 (2014) Vol 4, No 1 (2014) Vol. 4 No. 1 (2014) Vol. 3 No. 2 (2013) Vol 3, No 2 (2013) Vol. 3 No. 1 (2013) Vol 3, No 1 (2013) Vol 2, No 2 (2012) Vol. 2 No. 2 (2012) Vol 2, No 1 (2012) Vol. 2 No. 1 (2012) Vol. 1 No. 2 (2011) Vol 1, No 2 (2011) Vol 1, No 1 (2011) Vol. 1 No. 1 (2011) Articles in Press More Issue