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All Journal Indonesian Journal of Teaching in Science Unnes Science Education Journal
Muslihah, Fitriyyatul
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Education Environmental Science Mathematics Social Sciences Other

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Steam Power Plant Powered by Wood Sawdust Waste: A Prototype of Energy Crisis Solution Hidayah, Fachri; Muslihah, Fitriyyatul; Nuraida, Indri; Winda, Ratu; Vania, V.; Rusdiana, Dadi; Suwandi, Tri; Aziz, Muhammad
Indonesian Journal of Teaching in Science Vol 1, No 1 (2021): IJOTIS: March 2021
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1607.431 KB) | DOI: 10.17509/ijotis.v1i1.33777

Abstract

The used of electricity from year to year is increasing. One of the alternative to power plants with abundant availability is wood waste. The aims of this study is to: (1) design a wood waste PLTU prototype as an alternative biomass-based energy resource and an effort to reduce wood waste, (2) describe the calorific value, the resulting electrical voltage, and the duration of the lamp flame generated from wood waste fuel. Teak (Tectona grandis), surian wood waste (Toona sureni), and a mixture of both. This descriptive research includes 3 stages, which is analysis, design, and testing. Through this research, a prototype of a wood waste steam power plant was successfully designed by utilizing biomass waste fuel. The results showed that the calorific value, the resulting electrical voltage, and the resistance time of the lamp varied in the wood samples used. This indicates that the wood samples used have the potential to be used as an alternative to biomass-based energy resources.
Psychological Barriers in Science Education: Correlation of Science Anxiety and Academic Performance Muslihah, Fitriyyatul; Rahmat, Adi; Winarno, Nanang
Unnes Science Education Journal Vol. 14 No. 2 (2025): August 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/usej.v14i2.20037

Abstract

Science anxiety is a debilitating combination of anxious negative emotion and cognition in the context of science education. This study investigates the relationship between students' science anxiety and their academic performance in science learning at the junior high school level. Employing a quantitative descriptive approach with a survey-based research design, the study gathered data from 109 students aged 12 to 15 years old. The Science Anxiety was used to assess students' levels of anxiety across personal and environmental dimensions. The survey result shown that science anxiety scale scale among junior high school students is 2.31, which both of them considered as low category. The findings reveal a moderate, negative correlation (r = -0.509, p < 0.001) between students' science anxiety and their learning outcomes. This inverse relationship suggests that as students' science anxiety increases, their academic performance tends to decrease. Conversely, lower levels of science anxiety are associated with better learning outcomes. The results highlight the significant impact of psychological factors, particularly anxiety, on students' engagement and achievement in science education.  Based on the students’ answers to open-ended questions, they are feel comfortable when learning science at school because of kind and friendly teacher. On the other hand, students who feel anxious in learning science when they found difficulties to comprehend scientific formulas. The findings provide valuable insights for educators and policymakers to develop targeted interventions and strategies that foster a more positive and inclusive science learning experience for all students.
Co-Authors Adi Rahmat Hidayah, Fachri Muhammad Aziz Nanang Winarno Nuraida, Indri Suwandi, Tri Vania, V. Winda, Ratu