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All Journal Journal of Science and Technology: Alpha Journal of Science and Mathematics Education
Ubaidilah, Achsin
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences

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Peran Probiotik Dalam Kesehatan Pencernaan Manusia Ubaidilah, Achsin
Journal of Science and Technology: Alpha Vol. 1 No. 3 (2025): Journal of Science and Technology: Alpha, July 2025
Publisher : Lembaga Publikasi Ilmiah Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70716/alpha.v1i3.236

Abstract

Probiotics are live microorganisms that, when consumed in adequate amounts, confer health benefits to the host, particularly in maintaining and enhancing digestive health. Research on probiotics has shown that their presence can help maintain the balance of gut microbiota, improve intestinal barrier function, and play a role in modulating both local and systemic immune systems. This article examines the role of probiotics from various genera, such as Lactobacillus, Bifidobacterium, and Saccharomyces, in supporting human digestive health, including their potential in preventing and managing gastrointestinal disorders such as diarrhea, irritable bowel syndrome (IBS), and inflammatory bowel disease (IBD). Furthermore, the article discusses factors that influence the effectiveness of probiotics, such as dosage, duration of consumption, and strain compatibility with individual conditions. This review also highlights challenges in the development of probiotic products, including stability during storage and resistance to gastrointestinal conditions. Based on the available scientific evidence, probiotics hold great potential as adjunctive and preventive therapeutic agents for maintaining digestive system health. However, more large-scale, controlled clinical studies are needed to ensure the safety, effectiveness, and specific mechanisms of action of each probiotic strain within a broader human population context.
Penerapan Model Problem Based Learning Untuk Meningkatkan Pemahaman Konsep Fisika Siswa SMA Negeri 1 Gunungsari Ubaidilah, Achsin
Journal of Science and Mathematics Education Vol. 1 No. 2 (2025): Journal of Science and Mathematics Education, June 2025
Publisher : Lembaga Publikasi Ilmiah Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70716/josme.v1i2.168

Abstract

This study aims to determine the effectiveness of applying the Problem-Based Learning (PBL) model in enhancing students' conceptual understanding of physics at SMA Negeri 1 Gunungsari. Problems in physics learning are often related to the low level of conceptual understanding, which results from conventional teaching approaches that lack active student engagement. The PBL model offers a student-centered learning approach, in which students are presented with contextual problems that encourage them to think critically, seek information, and build understanding through discussion and group work. This research employed a quasi-experimental method with a pretest-posttest control group design. The research subjects consisted of two grade XI science classes selected purposively: one class served as the experimental group using the PBL model, while the other class served as the control group with a conventional learning method. The analysis results showed a significant improvement in conceptual understanding in the experimental group compared to the control group. The average posttest score of the experimental group was statistically higher, and the N-Gain value increase demonstrated the effectiveness of PBL in fostering students' conceptual understanding. These findings indicate that the implementation of the PBL model can be an effective alternative learning strategy to improve the quality of physics education at the senior high school level.
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