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All Journal Schrödinger: Journal of Physics Education Science: Indonesian Journal of Science
Khairiah, Rhea
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Agriculture, Biological Sciences & Forestry Chemistry Mathematics Physics Public Health Social Sciences Other

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Analisis Pengaruh Jenis Minyak Jelantah Terhadap Ketahanan Lilin Aromaterapi Wihdah Dwi Fathani; Khairiah, Rhea; Aini, Latifa Marwaatul
Science: Indonesian Journal of Science Vol. 2 No. 1 (2025)
Publisher : LPPI Yayasan Almahmudi bin Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/science.v2i1.289

Abstract

Limbah minyak jelantah yang tidak dimanfaatkan dengan baik dapat mencemari lingkungan. Salah satu cara pemanfaatannya yaitu dengan mengolahnya menjadi lilin aromaterapi. Penelitian ini bertujuan untuk menganalisis pengaruh jenis minyak jelantah terhadap ketahanan lilin aromaterapi. Metode yang digunakan dalam penelitian ini adalah eksperimen kuantitatif. Adapun jenis minyak jelantah yang digunakan, yaitu minyak kelapa bekas rumah tangga, minyak sawit bekas rumah tangga, minyak sawit bekas goreng ayam, dan minyak sawit bekas gorengan. Minyak tersebut dicampur dengan soy wax dan essensial oil, lalu dicetak menjadi lilin aromaterapi. Ketahanan lilin diuji berdasarkan sisa tinggi lilin setelah pembakaran selama 90 menit. Hasil menunjukkan bahwa lilin dari minyak kelapa bekas memiliki ketahanan terbaik (2,4 cm), sedangkan minyak sawit bekas goreng ayam menunjukkan ketahanan terendah (1,4 cm). Perbedaan ketahanan ini dipengaruhi oleh karakteristik kimia dan kondisi minyak. Penelitian lanjutan diperlukan untuk mengevaluasi pengaruh suhu pemanasan, metode pemurnian, dan penggunaan zat aditif terhadap kinerja lilin aromaterapi.
Surveying the Obstacles to Effective English Communication in Physics Tutorials Khairiah, Rhea; Wiardy, Achmad; Wahyunengsih
Schrödinger: Journal of Physics Education Vol. 6 No. 4 (2025): December
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/sjpe.v6i4.2452

Abstract

Purpose of the study: This study aims to describe how English is used to support communication during physics tutorial activities and to analyze the linguistic, psychological, and environmental factors that hinder effective communication among students during English-medium physics tutorials. Methodology: This study used a descriptive survey design involving 50 physics students. Data were collected through a 50-item Likert-scale questionnaire developed based on theoretical frameworks in language learning and science education. All responses were processed using descriptive statistical techniques in Microsoft Excel to identify dominant linguistic, psychological, and environmental communication barriers. Main Findings: The results of the study show that psychological barriers, especially anxiety when speaking, fear of making mistakes, and lack of confidence, are the biggest obstacles in the communication process. In addition, there are also linguistic challenges, such as limited technical vocabulary and difficulty in accurately formulating scientific expressions. Environmental factors, including the speed of delivery and lack of language support, further exacerbate these communication difficulties. Novelty/Originality of this study: This study conducts an in-depth analysis of communication barriers in physics tutorial activities, a context that has been previously under-discussed in the literature. By integrating linguistic, psychological, and environmental perspectives, this study presents new empirical findings that can enrich more inclusive pedagogical practices and support the development of science learning strategies that use English as the medium.
Co-Authors Aini, Latifa Marwaatul Wahyunengsih, Wahyunengsih Wiardy, Achmad Wihdah Dwi Fathani