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All Journal Jurnal Peternakan Indonesia Jurnal Penelitian Pendidikan IPA (JPPIPA) JURNAL PENDIDIKAN TAMBUSAI Pelita Eksakta Media Agribisnis Asian Journal of Science Education JAGO TOLIS : Jurnal Agrokompleks Tolis Bhakti Nagori (Jurnal Pengabdian kepada Masyarakat) PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Inisiatif: Jurnal Ekonomi, Akuntansi Dan Manajemen Indonesian Research Journal on Education Indo-Fintech Intellectuals: Journal of Economics and Business Jurnal Serambi Biologi Agrifo: Jurnal Agribisnis Universitas Malikussaleh Bersama: Jurnal Pengabdian Kepada Masyarakat Asian Journal of Science Education
Roni Jarlis
Universitas Negeri Padang
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Journal : Asian Journal of Science Education

 1 
Mechanical Properties of Coconut Particle Board with Variation of Material Composition Roni Jarlis
Asian Journal of Science Education Vol 4, No 1: April, 2022
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/ajse.v4i1.25325

Abstract

The research carried out is a laboratory experimental research withmake particle board from coconut coir, with variations in the composition of fibers and powders used are 100 % - 0%, 90 % - 10 %, 80 % - 20 %, and 70 % - 30 % using urea formaldehyde adhesive in order to determine the mechanical properties, and find a good composition of coconut coir particle board. Sampling was carried out at the Forestry Laboratory of the Muhammadiyah University of West Sumatra. The tests were carried out at the Civil Polytechnic Laboratory of Unand, and at the Agricultural Product Technology Laboratory of Unand. The independent variables in this study were thickness and composition variation. The dependent variable is density, flexural strength or MOR. Control variables are temperature, adhesive content, particleboard thickness, compression pressure, and drying time. Data were taken by repeated measurements of 5 samples. Based on the results of the research that has been carried out, it was found that the use of coconut coir powder particles as an outer coating for particleboard at different percentages has an influence on the mechanical properties of the particle board. From the results of the study, it was found that particleboard with a composition between fiber and coconut coir powder (90% - 10%) was the best result because the less powder used resulted in good mechanical properties with a density of 0.52 g/cm3 and flexural strength or MOR 159, 43 Kg/cm2.
Development of Student Worksheets Based Inquiry using PhET Simulations to Enhance the Curiosity Attitude of High School Students Roni Jarlis; Juli Supriyanti; Fildza Arief Syuhada; Ananto Ananto; Taufiqqurahman Taufiqqurahman; Santi Diana Putri; Putri Rahmi
Asian Journal of Science Education Vol 5, No 1: April, 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/ajse.v5i1.30861

Abstract

The research aims to develop inquiry-based worksheets which are expected to increase students' curiosity about gas kinetic theory material. The inquiry approach method was developed with steps, giving problems, formulating problems, hypotheses, experiments, collecting data, analyzing data, and making conclusions. The method used is the ADDIE development method, which analyzes, designs, develops, implements, and evaluates. Developing inquiry-based worksheets and testing the effectiveness of these worksheets in the learning process. The research subjects were 22 class XI students of SMA N 4 Sijunjung. The instrument used was a student worksheet and a curiosity attitude questionnaire. Assessment of the student worksheet was carried out by validation tests of media experts, material experts, and questionnaires for teachers. The validation results of media experts showed 92.30% (very good), and media experts scored 90.21% (very good), while trials on teachers and students showed scores of 86.13% and 89.16% (very good). The results of the student worksheet effectiveness test used the medium criterion N-Gain test, value 0.32. This shows that inquiry-based worksheets equipped with Phet simulations deserve to be good teaching materials and can increase students' curiosity in high school physics learning on the kinetic theory of gases.
Co-Authors -, Vauzia - Agustian Agustian Alatas , Andi Ananto Ananto Ananto Ananto Ananto Ananto, Ananto Andi Alatas, Andi andi, Andi alatas Apriyanita Lesmana Eka Safitri Anggraini Erfan Handoko Fadilla Meidita Fevria, Resti Fevria, Resti - Hamdilah, Kudril Hamdilla, Kudril Hermansah Hermansah, Hermansah Hidayati Hidayati I Made Astra Juli Supriyanti Kiki Amelia Kiki Amelia, Kiki Mairizwan Mairizwan Maiyontoni, Maiyontoni Maria Agusti Peni Marna, Tilta Migusnawati Migusnawati Migusnawati, Migusnawati Novarista, Noni Nurmiati Nurmiati Oktaviani, Isma Pratama, Tisa Putra Putra, Ahadul Putri Rahmi Putri, Santi Diana Rahmani Fitra Rahmi, Putri Refangga, Refangga REFIKA KOMALA Renol Afrizon Samsul Huda Samsul Huda Sunan Wibowo Supriyanti, Juli Syuhada, Fildza Arief Taufiqqurahman Taufiqqurahman Taufiqqurahman Taufiqqurahman, Taufiqqurahman Taufiqqurrahman, Taufiqqurrahman Tisa Putra Pratama Vauzia, Vauzia Vivi Hendrita Wahyuni Satria Dewi Wilna Sari Yulkifli Yulkifli