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All Journal EKSAKTA: Journal of Sciences and Data Analysis POSITRON Techno: Jurnal Penelitian Edu Sains: Jurnal Pendidikan Sains dan Matematika IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Al Ishlah Jurnal Pendidikan Jurnal Penelitian Sains Jurnal Penelitian Pendidikan IPA (JPPIPA) Momentum: Physics Education Journal Jurnal Redoks JURNAL PENDIDIKAN TAMBUSAI Aptisi Transactions on Technopreneurship (ATT) Al-Ta'lim Kinetika Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Pillar of Physics Education : Jurnal Berkala Ilmiah Pendidikan Fisika AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Jurnal Teknologi International Journal of Research in Vocational Studies (IJRVOCAS) Aptekmas : Jurnal Pengabdian Kepada Masyarakat Chemical Engineering Journal Storage (CEJS) Prisma Sains: Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Proceeding ISETH (International Summit on Science, Technology, and Humanity) Internet of Things and Artificial Intelligence Journal Innovative: Journal Of Social Science Research Bioedunis Journal International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS) Applied Engineering, Innovation, and Technology Journal of Experimental and Applied Physics
Yohandri Bow
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Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Veterinary Other

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Development of physics e-module based on integrated project-based learning model with Ethno-STEM approach on smartphones for senior high school students Yulkifli, Yulkifli; Yohandri, Yohandri; Azis, Hasbi
Momentum: Physics Education Journal Vol. 6 No. 1 (2022)
Publisher : Universitas PGRI Kanjuruhan Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21067/mpej.v6i1.6316

Abstract

Standard competency of graduate students of class XI in Physics learning is considered not optimal. One of the contributing factors is the unavailability of the Physics E-Module, which contains model steps and is integrated with a learning approach in order to direct students in active learning. This study aims to produce a Physics E-Module based on an integrated project-based learning model with an Ethno-STEM approach on smartphones for class XI high school students with valid, practical, and effective criteria. This is development research using the Plomp development model consisting of three stages: Preliminary Research, Development or Prototyping Phase, and Assessment Phase. The instruments used in this research include three questionnaires for preliminary study, validity and practicality, attitude observation sheets, written test sheets, and skills assessment sheets. The result obtained was a Physics E-Module based on an integrated project-based learning model with the Ethno-STEM approach on smartphones for class XI high school students who meet valid, practical, and effective criteria.
Effective CO₂ Capture from Biomass Flue Gas Using a DEA-Promoted Potassium Carbonate Absorbent in a Packed Column Reactor Aprizal, Candra; Hasan, Abu; Bow, Yohandri
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 5 No. 2 (2025): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v5i2.446

Abstract

This research investigates the effectiveness of a Diethanolamine (DEA) promoted potassium carbonate (K₂CO₃) solution for capturing carbon dioxide (CO₂) from flue gas generated by the carbonization of coconut shells. The study aimed to evaluate the influence of absorption column packing height and absorbent flow rate on CO₂ removal efficiency. The absorption process was conducted in a counter-current packed column using a solution composed of 30% wt K₂CO₃ and 3% wt DEA. Key process variables included packing heights of 10, 20, 30, and 40 cm, and absorbent flow rates of 0.5, 1.0, and 1.5 L/m. The results demonstrated that the combined DEA and K₂CO₃ solution is highly effective, achieving a maximum CO₂ removal efficiency of 97.81% at a packing height of 40 cm and a flow rate of 1.5 L/m. Analysis of the absorbent solution revealed a corresponding decrease in carbonate (CO₃²⁻) concentration and an increase in bicarbonate (HCO₃⁻) concentration, confirming the chemical absorption of CO₂. The process kinetics were found to align with a pseudo-second-order model. This study concludes that a packed column absorption system with a DEA-promoted K₂CO₃ solution presents an effective and viable method for mitigating CO₂ emissions from biomass processing.
ANALISIS KOMPOSISI SYNGAS DAN NILAI KALOR PADA GASIFIKASI UPDRAFT BAHAN BAKU TEMPURUNG KELAPA DITINJAU DARI PENGARUH LAJU ALIRAN UDARA Raihansyah, Ahmad; Manurung, Nicolas; -, Zurohaina; Bow, Yohandri; Zikri, Ahmad
Chemical Engineering Journal Storage (CEJS) Vol. 5 No. 06 (2025): Chemical Engineering Journal Storage (CEJS)-December 2025
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v5i06.24332

Abstract

Indonesia memiliki potensi besar sebagai penghasil sumber daya biomassa yang dapat dimanfaatkan sebagai energi alternatif di tengah meningkatnya kebutuhan energi dan ketergantungan terhadap bahan bakar fosil. Salah satu limbah biomassa yang melimpah adalah tempurung kelapa, yang memiliki kandungan karbon tinggi dan berpotensi dikembangkan sebagai bahan bakar alternatif melalui proses gasifikasi. Gasifikasi biomassa merupakan salah satu metode paling efektif untuk mengubah biomassa menjadi berbagai jenis energi Penelitian ini bertujuan untuk mengetahui pengaruh variasi laju alir udara terhadap komposisi syngas, nilai kalor (LHV), dan efisiensi termal pada gasifikasi updraft menggunakan arang tempurung kelapa.. Hasil penelitian menunjukkan bahwa laju alir udara 132 L/min menghasilkan komposisi syngas yang optimal yaitu CH4 0,9589%,H2 0,0356%,CO 0,0995%. Nilai LHV syngas tertinggi diperoleh sebesar 371,335 kJ/m³ pada laju alir udara 132 L/min, dan efisiensi termal tertinggi mencapai 23,41%. Dengan demikian, peningkatan laju alir udara berpengaruh positif terhadap pembentukan gas mampu bakar dan efisiensi proses gasifikasi arang tempurung kelapa
Prediction of Tropical Cyclone Trajectory and Intensity Using a Particle Motion Based Machine Learning Framework in the Southern Indian Samiaji, Budi Iman; Yulkifli, Yulkifli; Yohandri, Yohandri; Yendri Sudiar, Nofi; Supari, Supari
Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Vol. 14 No. 2: April 2026
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-ps.v14i2.19982

Abstract

Tropical cyclones in the Southern Indian Ocean pose severe threats to coastal infrastructure and socio-economic stability, yet predicting their recurving trajectories and intensity remains a significant meteorological challenge. This study evaluates the performance of a particle-motion-based machine learning framework, utilizing the Trackpy library, to forecast cyclone behavior. Leveraging historical data from 2018 to 2025 (JTWC and IBTrACS), the model treats cyclones as physical particles with temporal inertia, employing a multi-lag feature to capture movement momentum. Evaluation using a dataset of 115 cyclones (78:22 train/test ratio) reveals that the Trackpy framework achieves high spatial precision, with Mean Squared Error (MSE) values of 0.1728 for latitude (±33.3 km) and 1.0250 for longitude (±53.2 km). While the intensity prediction yielded a higher MSE of 47.7544 (approximately 6.9-knot deviation), the model successfully captured major strengthening and weakening phases across prominent cyclones, including TC Wallace and TC Neville. These findings demonstrate that integrating temporal inertia is highly effective for maintaining trajectory consistency, establishing Trackpy as a robust architectural foundation for operational forecasting. Further optimization via hybrid models and additional meteorological variables is recommended to enhance intensity accuracy.
Research Trends of Problem Based Learning (PBL) Model in Science Courses in Universities Roza, Media; Azhar, Minda; Yohandri, Yohandri; Arsih, Fitri
AT-TA'LIM Vol 30, No 1 (2023)
Publisher : Institut Agama Islam Negeri Imam Bonjol Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15548/jt.v30i1.761

Abstract

The PBL model has relevance and potential in developing 21st-century skills. This study uses the Systematic Literature Review method to identify PBL research trends in science courses at universities. A literature search using the app Publish or Perish with the Scopus database and data from journals indexed by SINTA (Science and Technology Index) in the last 10 years, from 2012 to 2021. In this study, there are 32 articles about PBL research in science lectures, including physics, chemistry, biology, and natural science.  The trend seen is a rise in publications addressing various facets of critical thinking abilities. Among research publications, quantitative research is the most common type. Quasi-Experimental designs are most often chosen by researchers, while RD designs are still little used. Chemistry is a subject that is most often chosen as a research subject. Meanwhile, the test is the most commonly used instrument for collecting data on 21st-century student skills
Co-Authors ,, Tahdid -, Zurohaina ., Zurohaina Abda Abda Abdul Razak Abdul Wahid Abu Hasan Abu Hasan Afrianda, Teguh Ahmad Taqwa Aida Syarif AIDA SYARIF Al-Insyrah, Eyza Recwika Ali Ahmad Alwi Nofriandi Anisa, Widya Anwar, Suci Apriani, Akmecia Risqa Arif Budiman Arissetyadhi, Iwan Arizal Aswan Asrizal Audia, Washilla Aulia Asman Ayu Permata Sari Azis, Hasbi Bachty, Hadri Baharuddin Baharuddin BAKHRANI RAUF Bayu Saputra Budiman, Ria Candra Aprizal Daniar, Rima Darozat, Fajar Mukharom Diah Iswandari Diah Rahmawati Effendy, Sahrul Erlinawati . Fadhlurrahman, M Revanza Fatahul Arifin Fatahul Arifin, Fatahul Fatria Fatria Fatria Febriana, Ida Festiyed Fitri Arsih Gabe, Totop Harjadi Gunawan Harliyani, Ayu Dwi Heru Afriansyah I Nyoman Sila Ibnu Hajar Ichsan Astanto Idham Mahenri Ifdil Ifdil Illahi, Kurnia Indah Purnamasari Isdaryanto Iskandar Jaya Utama Putra Jhora, Fadhila Ulfa Juanta, Palma Kalsum, Leila Kholidah , Nurul Leila Kalsum Leila Kalsum Lety, Trisnaliani Lufri Lufri M. Amir M. Reza Ramlan M. Syahirman Yusi Mahardhika, Lintang Putri Mairizwan, Mairizwan Manggala, Agus Manurung, Nicolas Marambang, Alfi Yory Maryam Seyaski Fitria Melta, Defrian Minda Azhar Miranda Roulina Miranda Roulina T Monica, Levia Moyo, Kgomotso Muhammad Agung Muhammad Reza Ramlan Muhammad Taufik Muhammad Yerizam Muhammad Zulfahmi Mustofa Mustofa Najwa, Cholida Nazhifah, Naurah Nedia Sandika Nofi Yendri Sudiar Novarini, N Pakhrur Razi Prakoso, Dibyo Putra, Andhika Satria Putra, Asri Eka Putra, M. Rizky Adhitya Rahmadina, Nisa Raihansyah, Ahmad RD Kusumanto Reza Angraini Rhevy Liandari Rifa'i, Ahmad Imam Riri Jonuarti Robby Setiadi Robert Junaidi Robiansyah Roza, Media RR. Ella Evrita Hestiandari Rusdianasari Rusdianasari Rusdianasari Rusdianasari Salamah, Luthfia Samiaji, Budi Iman Samosir, Devina Sanchia Santosa, Tomi Apra sari, Desi Nurmala Sari, Mona Sari, Mona Berlian Septiana, Iriani Reka Shela Dilen Putri Siagian, Gunaria Sigit Kurniawan Sirajuddin Skunda Diliarosta Sofianora, Aulia Suaidi Ahadi Sundari, Okta Supari Supari, Supari Sutini Pujiastuti Lestari Sutini Pujiastuti Lestari Suyanta Suyanta Syakdani, Adi Tahdid . Thamrin Thamrin Tresna Dewi Wibby Aditya Putra Utama Widiartha, Wahyu Dewa Winiasri, Linda Wiranata, Muhammad Adithia WULANDARI, NILA Yendri Sudiar, Nofi Yenni Darvina Yerimadesi Yulifarma, Rika Yulkifli Yulkifli Yusi, Syahirman Zakiyah Sri Rezeki Zikri, Ahmad Zikri, Ahmad Zulhendri Kamus Zulma, Degito Zulyusri Zulyusri