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 416 Documents
 38   39   40   41   42 
Analysis of the Characteristics of Higher Order Thinking Skills (HOTS) Test on Momentum and Impulse for Senior High School Student Using Item Response Theory Aulia Rahman; Heni Rusnayati; Muslim Muslim
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.p127-137

Abstract

Currently, 21st-century skills are needed by students, especially Higher Order Thinking Skills (HOTS), to meet the needs of the rapidly growing world of work. It is necessary to provide debriefing during learning activities to meet these needs. Besides that, a quality instrument is needed to measure the skills of each student, the more information that the instrument can provide shows that the instrument is getting better. This study aimed to determine the characteristics of the Higher Order Thinking Skills test on momentum and impulse consisting of validity, reliability, difficulty level, and discrimination index based on item response theory analysis. The method used in this research is a descriptive method with a quantitative approach and a One-Shot Design research design. The population was second-year senior high school students in Bandung. Meanwhile, the sample of this study consisted of 122 second-year senior high school students who were selected using a purposive sampling technique. The instrument used was the Higher Order Thinking Skills test on momentum and impulse. Based on the result, 16 items were categorized as valid. Besides, the reliability of the test instrument was good. For the level of difficulty, an item was categorized as very difficult, an item was difficult, twelve items were medium, three items were easy, and an item was very easy. Lastly, for the discrimination index, thirteen items were considered good, and five items did not classify as good.
Microstructure and Optical Properties Study of Nd-doped BiFeO3 (Ba1-xNdxFeO3) Films on Quartz Substrate Yofentina Iriani; Dianisa Khoirum Sandi; Rainisa Nurmawanti; Sri Budiawanti; Elvinda Bendra Agustina
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.p148-157

Abstract

Bismuth ferrite oxide (BFO), due to its remarkable properties, has become one of the most attractive multiferroic materials to be extensively studied. BFO doped with various materials, including Neodymium (Nd), could improve its properties applicable to numerous electronic devices. However, the study related to the properties of Nd-doped BFO (Ba1-xNdxFeO3) thin films on a quartz substrate, especially the optical properties, is rather scarce. This study aimed to investigate the microstructure and optical properties of the Nd-doped BFO (BNFO) as the variation of the Nd concentrations. Here, the BNFO thin films with Nd concentrations of 0.05 (BNFO5); 0.1 (BNFO10); and 0.2 (BNFO20) have been deposited on the quartz substrates via the sol-gel method done by a spin coater. The films were annealed at 600oC for 1.5 h. The XRD result of the BNFO films revealed a single phase of BFO with a cubic structure. The lattice constants and volume cells of the films declined with more Nd. Meanwhile, the crystallite size and lattice strain changed due to the change in the Nd number. Additionally, the morphology images showed the pores on the films’ surface and the different film thicknesses of each BNFO film. From the optical characterization, the transmittance spectra of the BNFO films tended to rise as the more Nd amount doped, in which the BNFO20 had the highest transmittance. The BNFO10 had the highest refractive index, followed by the BNFO5 and BNFO20. Contrarily, the BNFO20 had the highest extinction coefficient and  spectra, followed by the BNFO5 and BNFO10. Further, the bandgap values of the BNFO5, BNFO10, and BNFO20 were 2.75, 2.85, and 2.64, respectively. Accordingly, due to the highest Nd amount that most impacted its microstructure, the BNFO20 exhibited the lowest bandgap value compared to the other films that are good for photovoltaic application.
Identification of Hydrocarbons Sub-Basin Based on Gravity Data Analysis in Lampung Area Muh Sarkowi; Rahmat Catur Wibowo; Suhayat Minardi; Indra Arifianto
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.p106-113

Abstract

Gravity Data analyses in Lampung area are carried out to identify potential hydrocarbon sub-basins. The hydrocarbon potential in the Lampung sub-basin is indicated by the presence of hydrocarbon seepage found in Wai Imus, Wai Tahmi, and from oil shown in Ratu-1 and Tujo-1 exploration wells. Spectrum analysis, filtering, gradient, and gravity anomaly modeling determine the presence of potential hydrocarbon sub-basins in the Lampung sub-basin. Our results show that the Bouguer anomaly in the Lampung sub-basin ranges from 0 mGal to 90 mGal. A high anomaly appears in the southern part associated with basement high and a low anomaly in the center area of the western region related to the existence of the large Sumatra fault zone. The Bouguer Anomaly spectrum analysis result shows that basement depth in the Lampung sub-basin is 2400 m to 4400 meters deep. Data analysis of residual Bouguer anomaly, SVD residual Bouguer anomaly, and fault structure identified 18 sub- hydrocarbon potential basins scattered in Way Kanan, Tulang Bawang Barat, Menggala, Mesuji, Terbanggi Besar - Seputih Surabaya (Central Lampung), Sukadana and Labuhan Maringgai (East Lampung) areas. Some volcanic paths were also identified from Ratu-1 well, and Tujo-1 well in the Lampung WKP block. 2.5D modeling results of residual Bouguer anomaly show Kasai, Muara Enim, and Air Benakat, respectively, overburdened rock formations deposited from the top, followed by the Gumai Formation, which acts as a seal formation, while the hydrocarbon reservoirs are from the Baturaja and Talang Akar Formation. Our subsurface depth model has been verified by Ratu-1 and Tujo-1 exploration well.
Estimation of the k-Value for Head CT Using ICRP-103 Tissue Weighting Factors Johan Andoyo Effendi Noor; Risalatul Latifah; Firdy Yuana
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.p179-188

Abstract

Multi-slice x-ray CT scanners are in highly use by physicians to assist them in diagnosing patients disease due to advances in their scanning speed, image processing and image quality. However, this trend results in patients being exposed to many fold higher doses compared to those for general x-ray radiography. This makes CT machines the major source of unwanted dose to the population from medical x-ray procedures. The CTDIvol and DLP parameters are quantities of concern in radiation protection measures. This study was aimed to examine the effective dose received by patients underwent head CT procedures In this paper we present our estimation of the k-value calculated from the DLP from the CT machine in the participating hospital using the ICRP 103 weighted tissue factor. Dose parameters were acquired from the machine and calculations were carried out using the ImPACT CTDosimetry software. We also compared the received doses by age and gender groups. We found that the doses are dissimilar between age groups and between male and female patients.
Utilization of Corn Oil as a Photocatalyst of Carbon Nanodots for Wastewater Cleaning Muh Al Ihwan; Zuhdan Kun Prasetyo
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.p171-178

Abstract

Water is a basic need of society. Unfortunately, the availability of clean water is very limited due to the large amount of waste in the waters in various regions in Indonesia. Thus, innovation is needed to purify wastewater. This research utilizes corn oil to reduce the pollution of dye waste, which is a problem for the environment. Corn oil is easy to find so it is suitable to be used to purify water waste. The photocatalyst technique using carbon nanodots of sun-assisted corn oil is an economical and easy-to-obtain method. Carbon nanodots from corn oil are made using the Hydrothermal method at a temperature of 2500oC heated for 3 hours. Carbon nanodots from corn oil are used as a photocatalyst in artificial methylene blue waste solutions. The photocatalyst test process is carried out by varying the amount of carbon dots. The result was observed until the artificial wastewater from methylene blue turned clear by varying a lot of carbon from 2 ml, 4 ml, 6 ml, 8 ml, and 10 ml. When the carbon nanodot content is 8 ml, the fastest time needed to clear methylene blue wastewater is 55 minutes. The fewer or more solutions given, the more time to clear up. These results indicate that carbon nanodots from corn oil can be used for photocatalyst purification of methylene blue wastewater.
Effectiveness of Laboratory Physical Modeling in Acquiring the Response of Time Domain Induced Polarization (TDIP) Y Yatini; Djoko Santoso; Agus Laesanpura; Budi Sulistijo
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 12 No. 1 (2022)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v12n1.p34-46

Abstract

Induced Polarization (IP) is one of the Geophysical methods that utilize the polarization properties of the rocks for metallic mineral exploration. The problems are how to distinguish the metallic minerals deposit based on the chargeability. The physical modeling of IP is used to study the behavior of TDIP response. The study of a simple mathematical model is carried out to obtain the theoretical curves which are presented as the subsurface parameter. These curves are used as a reference to assess the result of physical modeling. The laboratory physical modeling uses a tank model with a size of (200x100x70) cm3, with a block as a target and water as a host medium. The results show laboratory physical modeling which has been made is quietly good. The approximate position and geometry of the target can be identified. The resistivity inversion modeling is sensitive to recognizing the geometry and position, while the chargeability inversion is on the distribution of metallic minerals. The quantitative correlation between chargeability and iron-ore content is obtained by Dipole-dipole and Wenner configuration. Both are connected exponentially, with a different exponential constant for different block targets.
The Effectiveness of the Problem-Based Learning Model Integrated STEM Approach in Improving the Critical Thinking Skills Z Zulfawati; Tantri Mayasari; Jeffry Handhika
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 12 No. 1 (2022)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v12n1.p76-91

Abstract

The research was aimed to know the effectivity of the problem-based learning with STEM approach on improving the X MIPA students’ critical thinking skills’. The research was done in SMA 1 Purwantoro. The design was one group pretest posttest design. The method of the research was a simple action research. The object of the research was X MIPA students in 2020/2021, the sample was 35 students. The technique of taking the sample was simple random sampling. The instruments were the test, the self-efficacy questionnaire, the learning response questionnaire. The result of the research showed that the problem-based learning with STEM approach was effective on improving the X MIPA students’ critical thinking skills which the result of Wilcoxon rank signed test hypothesis testing The impact of the research could develop the students critical thinking skills in order to grow a problem solver character. 
Students’ Responses to the Implementation of the Inquiry-Based Pictorial Riddle Method via Online in the Concept of Fluid Static Muhammad Syukri; Wardatul Husna; Ngadimin Ngadimin; Ayu Andriani; Lilia Halim
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 12 No. 1 (2022)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v12n1.p14-23

Abstract

The Covid-19 pandemic has led to the issuance of government policies that require distance learning. One approach so that students remain motivated to learn is to use a method that allows two-way interaction between teachers and students even though learning is online. The research was conducted in SMA Negeri 4 Vocational High School, class XI MIA 3, involving 34 students. The research method used was descriptive research which describes students’ responses to the implementation of the inquiry-based pictorial riddle method online. The data collection technique used four alternative answers. The research data was processed using the Likert scale. Based on the results of the study, students’ responses to the inquiry-based pictorial riddle method were very good. This is evidenced by the response from most students who feel interested and get many benefits when learning to use inquiry-based pictorial riddles during online learning.
Analysis of Equilibrium Concepts at Traditional Dance of Tari Banjarkemuning, Sidoarjo as an Innovation of Physics Learning by Ethnoscience Approach Achmad Maulana Satria Putra; Rif’ati Dina Handayani; Trapsilo Prihandono; Rayendra Wahyu Bachtiar
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 12 No. 1 (2022)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v12n1.p62-75

Abstract

Physics learning is rarely associated with local wisdom, so many people think the local arts have a separate topic from scientific study. This research analyzes the equilibrium concepts at Tari Banjarkemuning from Sidoarjo, East Java. This qualitative research uses content analysis techniques divided into six steps: unitizing, sampling, coding, reducing, inferring, and narrating. The data were collected by observation, documentation, and interviews. The research indicates that the equilibrium concept at Tari Banjarkemuning is the condition of equilibrium and the center of mass. The equilibrium state is shown in the motion of Embat-Embat and Solah Kembang Turi at the Sagah position (the silent moment of the dancers while inclined the bodies sideways and backward). Then, the center of mass is shown in the motion of Kejer (the dancers raise one leg) and Kencrongan (the dancers at the Tanjak position open- dancers’ legs perpendicularly at the knee). The integration of Tari Banjarkemuning in learning activities is expected for students to understand physics concepts easily. At the same time, it can make meaningful physics learning and build a better character for students.
Simulation of Land Movement Detection System Using Accelerometer Sensors and Fiber Optic Qonitatul Hidayah; Umi Salamah; Yuda Wiges Pratama
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 12 No. 1 (2022)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v12n1.p24-33

Abstract

Indonesia’s geographical conditions are one of the causes of land movement. This land movement can occur due to the movement of rock masses, soil, or debris material making up the slopes. The stability of a slope is influenced by several parameters such as material, soil strength, slope angle, climate, vegetation, and time. In Indonesia, land movement disasters are placed the third rank of natural disasters that occurred throughout 2021. Thus, the development of a land movement detection system is very important for monitoring land movement disasters. In this research, a land movement detection device was developed using the ADXL 335 accelerometer sensor and fiber optic. For data acquisition, Arduino Uno, LEDs, and photodetectors were used. Arduino Uno was used to convert analog signals to digital. In addition, LEDs were used as light sources, and photodetectors were used as a receiver. Changes in the output voltage due to macrobending loss are obtained when the curvature changes due to the pendulum system. The results of the study show that the average acceleration values on the x, y, and z axes of the accelerometer sensor are 0.118 g, 0.925 g, and -2.494 g. The maximum land displacement movement that can be represented by fiber optic is 4 cm. Further, the combination use of accelerometer sensors and fiber optic can show the magnitude of the force that causes displacement, the direction of land displacement, and the magnitude of the land displacement that occurs.

Page 40 of 42 | Total Record : 416

 38   39   40   41   42 

Filter by Year

2011 2023


Reset
Filter By Issues
All Issue 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) Vol 10, No 1 (2020): Articles in Press 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