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All Journal Journal of Aceh Physics Society Jurnal Penelitian Pendidikan IPA (JPPIPA) JPPS (Jurnal Penelitian Pendidikan Sains) Jurnal Pemerintahan dan Kebijakan (JPK) Journal of Technomaterial Physics Jurnal Natural Jurnal Rekayasa elektrika Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education)
Rini Safitri
Jurusan Fisika FMIPA Universitas Syiah Kuala Banda Aceh
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Immunology & microbiology Materials Science & Nanotechnology Neuroscience Physics Social Sciences

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Ethnoscience-Based Inquiry Learning to Increase Students’ Critical Thinking Skills and Collaboration Skills Cut Nurul Fitri; Saminan; Rini Safitri; Teuku Muhammad Hary Ramadhan; Evendi; Safrida S
Jurnal Penelitian Pendidikan IPA Vol 10 No 11 (2024): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i11.9736

Abstract

The goal of this study is to increase students' CTS and CS about quantity and unit material using ethnoscience-based inquiry learning. The study utilized a non-equivalent control group design with two classes: experimental and control. The sample in this study were students of class X IPA 7 and X IPA 8, who were chosen using purposive sampling procedures. The research sample comprised 71 students. The research data was gathered using 15 multiple-choice questions, a CTS questionnaire, and a CS questionnaire. Normality, homogeneity, the t-test, and correlation tests were employed to analyze the data. Based on the research findings, students' CTS and CS rose in the experimental class, with N-gain values of 0.71 (high) and 0.60 (medium). The experimental and control courses showed significant differences in students' CTS and CS outcomes (Sig. < 0.05). Aside from that, there is a very strong correlation between students' CTS and CS results in learning, with r = 0.938. It may be concluded that using an ethnoscience-based inquiry paradigm can help students enhance their CTS and CS. Thus, it is possible to infer that ethnoscience-based inquiry learning may increase students' CTS and students' CS. There is a very strong correlation between CTS and students' CS.
Entrance Surface Air Kerma (ESAK) in Adult Posteroanterior (PA) Chest Radiography: An Exploratory Analysis Intan Mulia Sari; Irhamni Irhamni; Rini Safitri; Evi Yufita; Ariana Shafira Dewi
Journal of Technomaterial Physics Vol. 8 No. 1 (2026): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v8i1.24603

Abstract

This study estimated Entrance Surface Air Kerma (ESAK) for adult posteroanterior (PA) chest radiography and described ESAK patterns in relation to selected technical parameters and patient characteristics as an initial facility-level baseline. A descriptive–exploratory observational study was conducted in 10 adult patients using a Siemens digital radiography system equipped with Automatic Exposure Control (AEC). ESAK was estimated from X-ray tube output obtained from acceptance/constancy testing and combined with routinely recorded exposure parameters. Incident air kerma (INAK) was calculated first and then converted to ESAK using a backscatter factor assumed to be constant at 1.35. All examinations were performed at 125 kVp with a fixed source-to-image distance (SID) of 180 cm. Focus-to-skin distance (FSD) was not recorded directly and was estimated from SID and the recorded chest thickness. ESAK ranged from 0.09 to 0.17 mGy (mean, 0.13 mGy), and all values were below the BAPETEN optimization reference level of 0.2 mGy. In this limited sample, graphical patterns indicated that ESAK increased with mAs and body weight and decreased with increasing FSD. These findings are preliminary and require confirmation in a larger cohort; however, they may serve as a temporary local baseline for internal dose auditing and to inform the design of subsequent dose optimization studies.
Co-Authors Ade T Amsir Ariana Shafira Dewi Cut Nurul Fitri Dadong Iskandar Desviana Desviana Elin Yusibani Erika L Evendi Evi Yufita Fredinan Yulianda Ibnu Khaldun Intan Mulia Sari Irhamni Irhamni Irwandi Irwandi Janiar Munira Kusdiana Kusdiana Laksono Trisnantoro Layna Miska Monita Olivia Muhammad Afifuddin Muhammad Hasan Muhammad Ikhsan Sulaiman Mursal Mursal Nurjannah Nurjannah Nurul Azmi Pardede Pardede Rita Andini Rizki Zakia Safrida S Saminan Saumi Syahreza Suhendrayatna Suhendrayatna Syukrimansyah Syukrimansyah Teuku Muhammad Hary Ramadhan WAHYUDI WAHYUDI Yusrizal Yusrizal Zakia Masrurah