cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Moh. Irma Sukarelawan
Contact Email
moh.sukarelawan@mpfis.uad.ac.id
Phone
+62895416066361
Journal Mail Official
irip@mpfis.uad.ac.id
Editorial Address
Jl. Pramuka Jl. Sidikan No.42, Pandeyan, Kec. Umbulharjo, Kota Yogyakarta, Daerah Istimewa Yogyakarta 55161
Location
Kota yogyakarta,
Daerah istimewa yogyakarta
INDONESIA
Indonesian Review of Physics (IRiP)
Published by Universitas Ahmad Dahlan
ISSN : 26213761     EISSN : 26212889     DOI : https://doi.org/10.12928/irip
Core Subject : Science, Education,
Astronomy Earth & Planetary Sciences Education Materials Science & Nanotechnology
This journal is continued version of Berkala Fisika Indonesia journal. The journal was published for the first time in 2008. The last published volume was 10 (1) 2018. The ISSN is 2085-0409 (printed version) and 2250-0465 (online version).
Arjuna Subject : Fisika dan Astronomi - Astronomi dan Astrofisika
Articles 134 Documents
 4   5   6   7   8 
Carbon Dots Synthesized from Tofu Pulp for Liquid Tofu Waste Photo-degradation Yosi Nurohman; Elisabeth Pratidhina; Emi Kurnia Sari; Wipsar Sunu Brams Dwandaru
Indonesian Review of Physics (IRiP) Vol. 4 No. 1 (2021)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v4i1.3327

Abstract

This study was aimed to prepare and characterize carbon dots (CDs) from tofu pulp for liquid tofu wastes photo-degradation. The tofu pulp was dried, heated in an oven for an hour at 250 oC, mashed into powder, weighted as much as (g) 1; 2; 3; 4; and 5, dissolved into 100 ml distilled water, filtered, and characterized using UV-Vis, PL, and FTIR. The photo-degradation experiment was conducted for pure waste, waste + CDs, and waste + CDs + UV light, then the BODs were measured. The CDs reduced the wastes to 14.29% and 53.90% without and with UV light, respectively. The pure wastes, wastes + CDs, and wastes + CDs + UV light produced BOD values of (mg/l) 385; 200; and 135, respectively. The decrease in BOD showed that CDs with and without UV light successfully restore dissolved oxygen in the wastes.
Synthesis Nanofiber PVA/Chitosan Using Electrospinning Method and Application for Gold Recovery Dwi Sabda Budi Prasetya; Ahmadi Ahmadi; Dwi Pangga; Ari Dwi Nugraheni; Harsojo Harsojo; Edy Supriyanto; Habibi Habibi
Indonesian Review of Physics (IRiP) Vol. 4 No. 1 (2021)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v4i1.3601

Abstract

This paper introduces a new process of gold recovery using nanofiber PVA/Chitosan from a gold-cyanide solution. Gold recovery in cyanide solution is made using nanofiber PVA/Chitosan produced with electrospinning technique. This research was conducted through several stages, 1) The designing of electrospinning tool, 2) Synthesis of nanofiber PVA/Chitosan with electrospinning technique, and 3) Gold recovery experiment using nanofiber PVA/Chitosan biosorption with the variations of initial concentration and time. The results showed that nanofiber PVA/Chitosan could be used as a gold ion absorber. The occuration of the isotherm process follows the Freundlich isotherm model, which is advantageous and occurs on a heterogeneous surface. From the results, it was agreed that nanofiber PVA/Chitosan is potential for gold recovery.
Student Self-Regulated in Remote Learning With the Implementation of Local Virtual Lab Based on Online Tutorial (LVL-BOT) Pariabti Palloan; Sri Rahmadhanningsih; Sparisoma Viridi; Jainuddin Jainuddin; Ahmad Swandi
Indonesian Review of Physics (IRiP) Vol. 4 No. 1 (2021)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v4i1.3783

Abstract

This study aims to measure the level of Self-Regulated Learning (SRL), conceptual understanding and identify an increase in conceptual understanding after using LVL-BOT. This type of research is Pre-Experimental with One-Group Pretest-Posttest Design. The research sample consisted of 37 students from physics classes who took modern physics courses. Students’ level of Self-Regulated Learning is administered using a questionnaire, and understanding of concepts is administered using a test. Based on the analysis results, the percentage level of Self-Regulated Learning is at a value of 87.7%, which is included in the very high category. There is a significant difference between the mean pre-test and post-test mean. The N-Gain Values of Photoelectric Effect and Black Body Radiation are 0.47 and 0.57, respectively. This shows an increase in student’s conceptual understanding, which is “enough” after using LVL-BOT.
The Ground State Energy of Helium Using Hartree-Fock Roothaan With Six Expansion Terms of Gaussian Type Orbital (GTO-6G) Nurlina Nurlina; Fitriah Bidalo
Indonesian Review of Physics (IRiP) Vol. 4 No. 1 (2021)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v4i1.3862

Abstract

An implementation of the Hartree-Fock Roothaan with six expansion terms of Gaussian Type Orbitals (GTO-6G) is described and used to study the Helium atom’s ground state accurately. The objective of this research is to calculate the ground state energy of the Helium atom. The analysis was conducted using the numerical method using Matlab2017b. By using the Hartree-Fock Roothaan method, the complexity of Hartree-Fock in integrating the differential equations of eigenvalues for each electron is repeatedly successfully overcome by expressing Hartree-Fock orbitals in the form of linear combinations, known as STO (Slater Type Orbitals) and GTO (Gaussian Type Orbital). The Hartree-Fock Roothaan approximation procedure begins by assigning an initial guess value to the elements of the density matrices and then constructing the first Fock matrix from these matrices. The calculation is performed using the various iterations in multiples of 50, show that the error value expressed in relative uncertainty is getting smaller at the 150th iteration, which is around 1.84%. Compared with some literature, the relative uncertainty value is still within tolerance (below 5%). The contribution of theoretical implications in this study can be used as input for other researchers to review the Hartree-Fock Roothaan method and improve accuracy.
The Analysis of Students’ Critical Thinking and Scientific Literacy Skills Fatma Zuhra; Nurhayati Nurhayati; Fitria Arifiyanti
Indonesian Review of Physics (IRiP) Vol. 4 No. 1 (2021)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v4i1.3980

Abstract

This research aimed to determine critical thinking and scientific literacy skills for the tenth-grade students of Bireuen Public High School 2 (SMAN 2 Bireuen). This research used a quantitative approach with a descriptive research design. There were 27 tenth-grade students of the second science class who selected samples through the purposive sampling technique. Descriptive analysis is a research type that does not provide the treatment, manipulation, or modification on the independent variables, but it describes an actual condition. The instrument used in this research was a test adapted from PISA questions. The results showed that the critical thinking and scientific literacy skills of tenth-grade students of SMAN 2 Bireuen were in the fair category. Therefore, it is necessary to apply learning approaches/models that can train students’ scientific literacy skills to get used to carrying out scientific activities, solving scientific problems, providing explanations for a phenomenon scientifically, and using scientific evidence to explain a fact.
The Effect of the Microsoft Excel based Interactive Learning Media on the Physics Problem Solving Irnin Agustina Dwi Astuti; Yoga Budi Bhakti
Indonesian Review of Physics (IRiP) Vol. 1 No. 1 (2018)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v1i1.243

Abstract

The physics problem solving is needed students to overcome the phenomenon of physics.  The development of technology in physics learning is able to explain the concept of abstract physics. This study aims to know effect of use interactive learning media based Microsoft Excel on the physics problem solving. The subject on this media is Heat and Temperature. The research method used is pretest-postest controlled group design. The analysis technique is used t-test with SPSS 16.0 with a margin of error of 5%. The results of this study showed that the mean scores of post-test treatment class students significantly better than the average score post-test control class indicated by the average score of students' post-test treatment class at 80.26 and scores the average post-test control class at 68.00 and with SPSS analyze sig value is 0.000. While the average score gain results-physics students learn physics class treatment significantly better than the average score gain results Physics students learn physics-control class indicated by the average score of physics problem solving gain of 0.77 and the treatment class the average score gain control class student physics problem solving of 0.63.
Architecture of Atwood Machine Props with Sensor-based Passive Infrared Dandan Luhur Saraswati; Delia Achadina Putri
Indonesian Review of Physics (IRiP) Vol. 1 No. 1 (2018)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v1i1.244

Abstract

The aim of this research is to develop Atwood machine propswith sensor-based PIR (Passive Infrared) to determine the acceleration value of earth gravity. This type of research is an experiment conducted in the physics laboratory of Universitas Indraprasta PGRI. Atwood machine was developed by using PIR (Passive Infrared) sensors to detect the movement of the objects used. Based on the trialof the result of the data analysis experiment tool, the acceleration of gravity was obtained (9.87 ± 0.08) m/s2. Whereas the value of acceleration of gravity in the literature is 9,80665 m/s2. The obtained results shows that the acceleration of gravity obtained in this research is not much different from the acceleration value of gravity  found in the literature so that Atwood machine tool that is developed by using PIR sensor is recommended to be one alternative tool in determining the acceleration of earth gravity.
The Penetration of Mobile Technology and Its Implementation on Learning in Indonesian High School Dwi Sulisworo; Muqoyyanah Muqoyyanah
Indonesian Review of Physics (IRiP) Vol. 1 No. 1 (2018)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v1i1.249

Abstract

The use of a smartphone as a mobile learning tool in schools is controversial. On the one hand, the teacher prohibits it because it would interfere with the learning process in the classroom; and on the other hand, the teacher saw a lot of potentials can be used from mobile technology. The goal of this study is to describe how the development of secondary schools in Indonesia can facilitate students through the use of mobile learning with the hope that it can be taken at the school level policies to strengthen the existing learning system so that students can achieve optimal learning competencies. This research used descriptive qualitative evaluations to make observations on the application of mobile learning in several secondary schools in several regions in Indonesia during 2015. The results of this study indicate that some of the schools that have implemented mobile learning have a tendency that mobile learning was not planned and structured as a school program; so that the advantages of mobile technology has not been effectively used. Two important things to solve this condition are the availability of government policy and improving teachers literacy in managing mobile learning application.
The Influence of Blended Learning Model Based on Problems of Physical Learning Achievements by Students of Class X Science in SMA 6 Denpasar Academic Year 2017/2018 Ni Putu Nadia Nikki Utami; I Wayan Santyasa; Iwan Suswandi
Indonesian Review of Physics (IRiP) Vol. 1 No. 1 (2018)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v1i1.253

Abstract

Learning achievement is the result achieved by someone after doing the learning process. One of the factors that influence learning achievement is the use of the learning model. This study aims to know the differences in achievement of students learning to use problem-based blended learning models and traditional blended learning. This study uses a quasi-experimental method of non-equivalent pretest-posttest control group design. The study population is all class X IPA with a total of 6 classes or 210 people. The sample consists of 3 classes or 107 people. Student learning achievement data were analyzed by descriptive analysis and ANOVA one-way (α = 0.05). The results of this study reveal that there are differences in student achievement due to the learning model. Higher learning achievement was achieved by problem-based blended learning models (F = 264.307; α<0.05). The LSD test results showed that the learning achievement of students in the MBLBM group was higher than MBL, the learning achievement of the MBLBM group was higher than that of MPK, and the learning achievement of the MBLBM group was higher than that of MPK.
Measurement Eccentricity the Moon’s Orbit with Image Analysis Technique by Using Tracker Software Ricka Tanzilla; Ishafit Jauhari; Yudhiakto Pramudya
Indonesian Review of Physics (IRiP) Vol. 1 No. 1 (2018)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v1i1.258

Abstract

One of the interesting physical phenomenon to be studied is about eccentricity of the Moon's orbit on the movement of the Earth and the Moon as explained in Kepler's Law. In order to explain the phenomenon,several research has been done to determine the measurement accuracy of Moon disk diameter using Trackers and to know the result of the eccentricity value in the application of Kepler's Law. This research can produce eccentricity values accordance with the application of Kepler’sLaw. The research method used is Image Analysis Techniqueassisted with Tracker. The result of this research shows that the eccentricity value obtained is 0.07 ± 0.01. This is in accordance with Kepler's first Law which stated that orbits of each planet and satellite is an ellipse and has an eccentricity value of 0 <e <1. The value of eccentricity obtained has accuracy of 22%,if it compared with the actual value.Whereas, if it compared with the value of ephemeris then the value of accuracy is 8%.

Page 6 of 14 | Total Record : 134

 4   5   6   7   8 

Filter by Year

2018 2025


Reset
Filter By Issues
All Issue Vol. 8 No. 1 (2025) Vol. 7 No. 2 (2024) Vol. 7 No. 1 (2024) Vol. 6 No. 2 (2023) Vol. 6 No. 1 (2023) Vol. 5 No. 2 (2022) Vol. 5 No. 1 (2022) Vol. 2 No. 2 (2019) Vol. 2 No. 1 (2019) Vol. 4 No. 2 (2021) Vol. 4 No. 1 (2021) Vol 4, No 1 (2021) Vol 3, No 2 (2020) Vol. 3 No. 2 (2020) Vol 3, No 1 (2020) Vol. 3 No. 1 (2020) Vol 2, No 2 (2019) Vol 2, No 1 (2019) Vol. 1 No. 2 (2018) Vol 1, No 2 (2018) Vol 1, No 1 (2018) Vol. 1 No. 1 (2018) More Issue