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Moh. Irma Sukarelawan
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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
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The Content Analysis of Bisphenol A (BPA) on Water in Plastic Glass with Varying Temperatures and Contact Times using UV-VIS Spectrophotometer Bayu Nugroho; Yudhiakto Pramudya; Widodo Widodo
Indonesian Review of Physics (IRiP) Vol. 1 No. 2 (2018)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v1i2.263

Abstract

This study aims to analyze the content of Bisphenol A (BPA) on various temperatureandcontact timesbetween the plastic bag and water. For analysis of BPA, a sample made with variations of temperature (± 70°C, ± 80°C, ± 90°C) and contacttime(5 minutes, 10 minutes, 15 minutes) usingnine samples. To determine the concentration of BPA, Lambert-Beer law was employed.According to the analysis of data, the content of BPA on the temperature variation showed that the higher the temperature of the sample, the higher the content of Bisphenol A in the sample. The content of BPA with a variation of contact times stated that with the longer contact time, the higher the content of BPA.
Effectiveness Of Active Learning Method Quiz Team Type On Student Learning Outcomes In Subject Ohm Law In SMA Negeri 1 Pundong Abu Yazid Raisal; Nanang Suwondo
Indonesian Review of Physics (IRiP) Vol. 1 No. 2 (2018)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v1i2.716

Abstract

This study aims to measure the increase in student learning outcomes from cognitive aspects and student activity between active quiz type learning methods and conventional methods. The sampling technique is non-random sampling. Data was collected using the pre-test and post-test for cognitive aspects while the affective aspects used the observation. Analysis of the data used the normality test, homogeneity test, and hypothesis testing. The hypothesis test used is a two-party t test. The results show that tcount= 7.273 > ttable= 2.01 at a significant level of 5%. It means that there are significant differences for cognitive aspects between learning outcomes using the team quiz type and conventional methods of active learning methods. Overall the team quiz method is more effective for improving student learning outcomes from cognitive aspects, and student activities.
The Development of Worksheet Based on Guided Discovery Learning Method Helped by PhET Simulations Interactive Media in Newton's Laws of Motion to Improve Learning Outcomes and Interest of Vocational Education 10th Grade Students Arip Nurahman; Widodo Widodo; Ishafit Ishafit; Butch O. Saulon
Indonesian Review of Physics (IRiP) Vol. 1 No. 2 (2018)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v1i2.776

Abstract

This research was aimed to produce students worksheet (LKPD) based on PhET Interactive Simulations Software in cognitive through the application of physics-based guided discovery learning model that is devoted to the concept of Newton's Law of Motion. Guided Discovery-based approach is expected and is believed to develop students' skills in various aspects of one study that showed achievement levels mastery of physics students after participating in the learning process under the expected educational purposes. Researchers conducted a study on the process of learning physics for the discovery-oriented at vocational senior high school students in Newton's law of motion with R&D. Subjects were students of class X TKRO in the first semester of the academic year 2018-2019 in vocational high school in Ciamis, West Java Province as many as 35 students. Data collected through tests, observations and interviews. 
Analysis of metacognition difficulties in problem-solving static fluid material in term of Hippocrates – Galenus personality type Eni Setyawati; Susilawati Susilawati; Dwi Sulisworo
Indonesian Review of Physics (IRiP) Vol. 1 No. 2 (2018)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v1i2.780

Abstract

Describing student's metacognition difficulties and thinking the process in problem-solving static fluid material in each melancholic, sanguinic, phlegmatic, and choleric (Hippocrates - Galenus) personality type. This data analysis method uses a Likert scale as a measurement scale. The data analysis technique used was grouping data into four categories: Understanding The Problem, Devising A Plan, Carrying Out The Plan, Looking Back. The cause of students' metacognition difficulties caused by a lack of understanding the concept of physics, knowing symbols, formulations, notations, and calculations that will be done in each problem solving, and lack of understanding strategies in problem-solving. Students who had a melancholic, sanguinic, choleric personality type were students who had metacognition difficulties when understanding and solving the problem, and also had problems in considering strategies and realizing the use of using strategy. Students who had the Phlegmatic personality type were able to understand the problem by looking at the problem and then making an image so that it can change the information into the form of physics.  
Signal processing of C-RTD Sensor output as the input to the instrument of low temperature monitoring using Arduino Uno Rev.3 Rismawan Rismawan; Moh. Toifur
Indonesian Review of Physics (IRiP) Vol. 1 No. 2 (2018)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v1i2.809

Abstract

The C-RTD (Coil-Resistance Temperature Detector) output signal is an analog signal in the form of a direct voltage. This value changes with changes in RTD temperature. This analog signal can be read by users using a multimeter or similar device but does not directly indicate the RTD temperature. In order to obtain RTD temperature values, an additional device is required. In order to have a useful value and practicality, a device that can convert analog signals into values can be read directly by the user. The microcontroller was chosen as a used device. The selected microcontroller system is Arduino Uno because has been coupled with input and output ports so users only need to enter programs related to the system being created. In the other hand Arduino Uno by considering the low cost and practical. For the measurement system, the RTD output signal must be conditioned into a digital signal using the ADC so that it can be processed by the microcontroller. From testing instrument obtained that the system has been able to convert analog RTD signals into digital signals. The range of measurement is -176°C to  0°C with an accuracy of ± 0.20 / mV. 
Flipped Classroom As a Millenial Teaching Model Irnin Agustina Dwi Astuti; Yoga Budi Bhakti; Ria Asep Sumarni; Dwi Sulisworo; Moh. Toifur
Indonesian Review of Physics (IRiP) Vol. 2 No. 1 (2019)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v2i1.811

Abstract

This study is a literature review. The flipped classroom is the latest pedagogical model that has the potential to change the current traditional way of teaching. Flipped classroom emphasizes on learning activities that promote critical thinking and motivation among the students with the assistance of technology. The flipped classroom allows educators to move from ‘the sage on the stage’ to ‘the guide on the side. The basic and simplest form of flipped classroom is students are expected to watch digital resources prior to class. The students are then required to come prepared for class and perform hands-on activities that are related to the digital resources. The digital resources can be in any form such as video, audio or the internet. This allows teachers to spend more time with their students to carry out in class activities and allow immediate response to students’ needs. Student feedback on this pedagogy was generally very positive with many respondents considering it effective and helpful for learning. One of the biggest advantages mentioned by students is that they had the option to watch each video lecture as many times as required to be prepared for class.
Characterization of Activated Charcoal Oil Palm (Elaeis Guineensiss Jacq) Shell Waste using SEM and FTIR: Effect of Activation Temperature Rasyid Syidiq; La Ode Yusran; Muhammad Anas; Suritno Fayanto
Indonesian Review of Physics (IRiP) Vol. 2 No. 2 (2019)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v2i2.812

Abstract

This study aims to determine the structure of morphology and functional groups from activated charcoal for palm oil waste with variations in activation temperature. The process of two stages: the carbonation and activation stage. Carbonation process using a pyrolysis reactor at a carbonation temperature of 200oC -400oC for 6 hours. Then, the sample activated at a temperature of 700 °C, 750oC, 800oC, and 850 °C. Samples were characterization using SEM and FTIR. SEM analysis results show the largest pore size at a temperature of 850 oC with a diameter of 48.3 nm, and the lowest temperature was 700 °C with a capacity of 35.3 nm. Activated charcoal from oil palm shell waste at mesopore size. Next, FTIR analysis results show wave numbers 2165,18 cm-1, 1554 cm-1, 1030,76 cm-1 dan 424,11 cm-1.  The removal of some absorption bands and  the formation of new absorption bands, caused by the activation temperature
Investigating The Effects of Activation Temperature on The Crystal Structure of Activated Charcoal From Palm Bunches (Arengga Pinnata Merr.) Vivi Hastuti Rufa Mongkito; Muhammad Anas; Wisda Puspita Bahar
Indonesian Review of Physics (IRiP) Vol. 2 No. 1 (2019)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v2i1.818

Abstract

This research aims to determine the effect of activation temperature the crystal structure of activated charcoal. The material used activated charcoal bunches (Arengga Pinnate Merr). The process of making activated charcoal divided into two, namely the carbonization stage at a temperature of 250- 400 oC and the activation stage at a temperature variation of 600 - 800 ÌŠC. To find the crystal structure, the sample characterized by X-Ray Diffraction. The results of analysis the dominant elements diamond before activation with a percentage of 90.2% and an orthorhombic crystalline structure, where the lattice parameter a = 4.12700 Ã…; b = 4.93700 Ã…; c = 4.81900 Ã…. Peak Carbon has a hexagonal crystal structure in all temperature variations. Peak Graphite an orthorhombic crystal structure and at a temperature of 700 oC a hexagonal crystal structure formed. Therefore, giving temperature variations the activated charcoal of the bunches affects the structure of the formed Crystal. Wherein increasing the activation temperature, the crystal structure that forms look more amorphous marked by a widening diffraction peak intensity decreased crystals
Cover IRiP Vol. 1 No. 1 Endra Putra Raharja
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.v1i1.843

Abstract

Cover IRiP Vol. 1 No. 2 Endra Putra Raharja
Indonesian Review of Physics (IRiP) Vol. 1 No. 2 (2018)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v1i2.844

Abstract

Page 7 of 14 | Total Record : 134

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