Article Per Year (5 Year)
p-Index From 2021 - 2026
3.57
P-Index
This Author published in this journals
All Journal EKSAKTA: Journal of Sciences and Data Analysis Jurnal Penelitian Pendidikan IPA (JPPIPA) INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Pengabdian Pada Masyarakat Eksakta : Berkala Ilmiah Bidang MIPA Kappa Journal Pelita Eksakta Pillar of Physics Education : Jurnal Berkala Ilmiah Pendidikan Fisika Pillar of Physics: Jurnal Berkala Ilmiah Fisika Journal of Climate Change Society Journal of Experimental and Applied Physics Inventa: Journal of Science, Technology, and Innovation Jurnal Penelitian Pembelajaran Fisika
Letmi Dwiridal
Universitas Negeri Padang
Agriculture, Biological Sciences & Forestry 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 Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

Published : 33 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 33 Documents
Search

 1   2   3   4 
Estimation of Earthquake Intensity and Peak Ground Acceleration in West Java Using the MC Guire and the Lin & Lee Method Resi Silvianis; Syafriani; Letmi Dwiridal; Zulhendra
Kappa Journal Vol 8 No 3 (2024): Kappa Journal
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i3.28095

Abstract

Abstract:  West Java province was in a subduction zone and fault zone (slip fault), which caused earthquakes. Therefore, it was necessary to research estimates of maximum ground acceleration in West Java to mitigate earthquake disasters. This research also aimed to determine the value of ground acceleration and earthquake intensity and to determine the distribution map using the McGuire method and the Lin & Lee method. The data used were earthquake data for 1950-2023 with a magnitude > 5 SR. From processing this data, the maximum ground acceleration value in West Java ranged between 10.14722-195.3540 gal, and the maximum intensity value was IV-VI MMI using the Mc Guire method. Meanwhile, for the Lin & Lee method, it ranged between 6.6512 to 49.24599 gal. Of the two methods, the largest maximum ground acceleration value was located in Cianjur Regency, which was due to its proximity to the Cimandiri fault and the geological conditions in the area.
Design of Biogas Reactor as a Sustainable Energy Source in Pauh Sub-District Padang, West Sumatra Ramli Ramli; Letmi Dwiridal
Pelita Eksakta Vol 1 No 2 (2018): Pelita Eksakta Vol. 1 No. 2
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol1-iss02/26

Abstract

Cow dung waste in Pauh sub-district is widely available. Only partly used as a traditional fertilizer. In fact, the utilization of cow dung is one of the alternative sources of renewable energy. Although biogas technology is not something new in Indonesia, the obstacles faced by farmers are their lack of knowledge about processing cow dung into biogas and making of biogas reactors. Community service has been undertaken to provide knowledge through guidance and counseling methods to farmers about biogas, biogas reactor manufacturing and technology, and the advantages of biogas reactors, both in terms of economic and environmental values. Stages of the implementation of the activities; 1). Provide guidance and counseling to farmers about biogas and how to manufacture biogas reactor, 2). Provide guidance and counseling about the safety of biogas reactors, 3). Conduct periodic monitoring of farmer groups that are partners to the continuity and continuity of activities. The result of the activity is the availability of biogas reactor in farmer group in Pauh sub-district. The fermentation process to produce biogas in the reactor is approximately 3 weeks. Biogas reactors are built easy to make and cheap.
Role of Electronic Modules Based on Problem-Based Learning Model to Facilitate Critical Thinking Ability:A Systematic Literature Review Ilda Asri; Hufri Hufri; Letmi Dwiridal; Selma Riyasni
Jurnal Penelitian Pembelajaran Fisika Vol. 12 No. 2 (2026): JPPF (Jurnal Penelitian Pembelajaran Fisika) : In Progress
Publisher : Universitas Negeri Padang in collaboration with Association of Mathematics and Natural Sciences Institution for Education of Teaching Staff Indonesia (AMLI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jppf.v12i2.84

Abstract

Critical thinking is a 21st-century skill that students must master, especially in physics learning, which requires logical reasoning and problem-solving. However, students' critical thinking abilities remain relatively low. One solution proposed by many researchers is an electronic module (e-module) integrated with the Problem-Based Learning (PBL) model. This article aims to systematically examine the role of PBL-based e-modules in facilitating students' critical thinking through a Systematic Literature Review (SLR). The literature review  previous studies on PBL-based e-modules across physics, chemistry, biology, and mathematics education, with physics contributing the largest share. A total of 15 journal articles were selected and review based on predetermined inclusion criteria. The findings show that e-modules developed using PBL syntax consistently improve students' critical thinking ability, with N-Gain scores in the moderate, high, and effective categories. These e-modules have also been reported as very valid and very practical for secondary school learning across all four subjects. The integration of real-world problems, active learning activities, and digital features enables students to analyze, evaluate, and solve problems more effectively. Therefore, PBL-based e-modules can serve as an innovative digital teaching resource to strengthen students' critical thinking ability and support student-centered learning in the digital era
Co-Authors - Asrizal - Hamdi Aditya Zein Oktavianto Ahmad Fauzi Akmam Akmam Angeline Chika Rorensia Anisa Rahmi Anisa Rahmi Ardilla Nofri Yuwanda Ardilla Nofri Yuwanda Cindy Magriza Putri Dessri Mai Syarif Dian Laila Fitri Dwi Anisa Visgun Dwi Anisa Visgus Eka Fitri Eko Muda Setiawan Elka Fitri Enora Fadhil Ramadhani Fahmi Rahmatia Fajri Syukur Rahmatullah Fandu Alfadilah Fanny Rahmatina Rahim Fatni Mufit Festiyed Gusmita Cahnia Putri Hamdi Hamdi Rifai Harman Amir Hidayati Hidayati Hilmi Rizki Anjani Hufri Hufri Hufri Hufri Ika Sri Fahmi Ikhsan Buyung Arifin Ilda Asri Juliana Dekriani Lingga Ayunda Pradipta Mia Nova Isnia Gara Miftahul Jannah nabila aulia rahma Nadya Fitra Kurnia Najmil Khaira Nofi Yendri Sudiar Putra, Amali Putri Nurhaliza Ramli Ramli Randy Ratnawulan . Renol Afrizon Resi Silvianis Rifqa Hayati Riyasni, Selma Riza Rahmayuni Riza Rahmayuni Sadinda Tsania Suhada Silvi Yulia Sari Silvia Irani Sugeng Nugroho Syafriani Syafriani Syafriani Syahrul Gunawan Trio Junira Fernando Yenni Darvina Yunita Syafitri Yurnetti Yurnetti Zulhendra Zulhendra Zulhendra Zulhendra