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All Journal Jurnal Ilmiah Poli Rekayasa Journal SAGO Gizi dan Kesehatan
Permata, Sherly
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Dentistry Education Health Professions Medicine & Pharmacology Nursing Public Health

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EVALUASI LENDUTAN BALOK BETON BERTULANG DENGAN PENDEKATAN MATEMATIS: PENERAPAN TEORI EULER–BERNOULLI TERHADAP BATAS KEMAMPUAN LAYAN Permata, Sherly
Jurnal Ilmiah Poli Rekayasa Vol 20, No 2 (2025): April
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jipr.20.2.392

Abstract

Accurate prediction of beam deflection is crucial in civil engineering structural design, ensuring both safety and functionality. This study investigates how the physical and material properties of a beam relate to the maximum deflection under various loading conditions. We used an analytical approach, applying classic deflection equations derived from Euler-Bernoulli beam theory, which assumes linear elasticity and small deformations. Our case study features a simply supported beam with a 4000 mm span. It's made of concrete with a 30 MPa compressive strength and reinforced with steel having a 390 MPa yield strength. The analysis includes common loading scenarios like concentrated and uniformly distributed loads to evaluate their impact on deflection. The calculations show a maximum deflection of 18.78 mm, which exceeds the allowable limit of 14.17 mm set by SNI 2847:2019. This study demonstrates that mathematical models reliably estimate structural behavior and are effective for design decision-making. These findings highlight the importance of analytical proficiency in structural engineering, especially during initial design and assessment phases. Integrating theoretical models with practical data improves the accuracy of structural analysis, contributing to safer and more efficient construction practices.
Tinjauan sistematis: Korelasi vitamin D terhadap Sel T regulator pada penderita lupus eritematosus sistemik Permata, Sherly; Fauziyah, Aimmatul
Jurnal SAGO Gizi dan Kesehatan Vol 5, No 3B (2024): Nopember
Publisher : Poltekkes Kemenkes Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30867/gikes.v5i3B.1922

Abstract

Background: Vitamin D is linked to immunity and autoimmune diseases, including systemic lupus erythematosus (SLE). Autoimmune diseases often involve impaired regulation of regulatory T cells (Tregs). Despite numerous studies exploring the relationship between vitamin D and Tregs in SLE, the findings remain inconclusive.Objectives: To determine whether there is a relationship or correlation between vitamin D and regulatory T cells in patients with systemic lupus erythematosus based on existing research articles employing different research methods.Methods: We conducted a systematic literature review following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines from February to May 2024. We sourced articles from Google Scholar, PubMed, and MDPI, focusing on research published between 2014 and 2024. Inclusion criteria were relevance to the topic and availability in full text, while exclusions were animal studies, research older than ten years, and articles not available in full text. Seven articles met the criteria and were reviewed.Results: Out of the seven articles reviewed, five found a correlation between vitamin D levels and the ratio and function of Tregs in SLE patients. Specifically, higher levels of vitamin D were associated with increased suppression of Tregs.Conclusion: The results of studies on vitamin D levels and Tregs in SLE patients are inconsistent. Further evaluation and additional research are required to determine the potential clinical benefits of vitamin D management in SLE therapy. 
Co-Authors Fauziyah, Aimmatul