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All Journal Jurnal Ilmu Fisika UPEJ Unnes Physics Education Journal
Kusjuriansah, Kusjuriansah
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Astronomy Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics

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Pengembangan Bahan Ajar Fisika Berbasis I-SETS Terkomplementasi Karakter Pada Materi Hukum Gravitasi Newton Kusjuriansah, Kusjuriansah; Yulianto, Agus
UPEJ Unnes Physics Education Journal Vol 8 No 2 (2019)
Publisher : UPEJ Unnes Physics Education Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (475.917 KB) | DOI: 10.15294/upej.v8i2.33314

Abstract

Teaching materials used in schools are still limited to the presentation of concise material and short formulas so that students feel difficulties when solving problems related to life. Teaching materials based on I-SETS complemented characters presented in material related to aspects of Islam, science, environment, technology, and society as well as character values so students motivated to be more active, creative, and think critically in solving problems. The purposes of this research are determine the characteristics, feasibility, readability, and practicality of gravity teaching materials. The method used is Research and Development. The teaching materials produced have several characteristics based on 3 aspects, namely content, presentation, and language. The result of the feasibility test indicates that teaching material is suitable to used in learning with a percentage of 87.50%. The result of readability test indicates that teaching material is easily understood by students with a percentage of 86.66%. The result of operational field test show that teaching material is practical to used in learning with a percentage of 85.91%.
Freeze-Thawed PVA Hydrogel Loaded by Morinda Citrifolia L. Leaves Extract with Physical and In-Vitro Antibacterial Properties Kusjuriansah, Kusjuriansah; Mufti, Ade; Nilva Tulhana, Fauzah; Fauziah, Dinny
Jurnal Ilmu Fisika Vol 17 No 1 (2025): March 2025
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.17.1.63-77.2025

Abstract

Morinda citrifolia L. leaves extract (MCLE) has been used as a medical material because of its antibacterial properties. Hydrogels synthesized from polyvinyl alcohol (PVA) are known to be applicable as delivery media for antibacterial substances. This article reports using the freeze-thaw method to use PVA hydrogel as an encapsulation medium for MCLE. PVA/MCLE hydrogel was synthesized in several combinations, namely 10:0, 10:1, 10:2, 10:3, 10:4, and 10:5. The test results showed the conductivity and pH values of the precursor solution ​​increased as the extract fraction increased, but decreased in the viscosity. The hydrogel showed a morphology with increased pore size when the extract fraction in the hydrogel increased. FTIR characterization confirmed that the extract had been successfully loaded into the hydrogel. The swelling degree test of the hydrogels showed an increase for samples 10:1 to 10:3 and a decrease for samples 10:4 to 10:5. Increasing the extract fraction then resulted in a decrease in the gel fraction of the hydrogel. The antibacterial activity test confirmed that the antibacterial activity in the extract remained present after being encapsulated in the hydrogel. Thus, the addition of MCLE affects the performance of the hydrogels to be applied in the medical field.
Co-Authors Agus Yulianto Dinny Fauziah Mufti, Ade Nilva Tulhana, Fauzah