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All Journal Jurnal Geuthee PESARE: Science and Engineering Service Journal
Zulfalina, Zulfalina
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Education Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Public Health Social Sciences

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Optimalisasi Pemberdayaan Laboratorium IPA dalam Upaya Meningkatkan Pemahaman Konsep-konsep Fisika bagi Guru IPA dan Siswa di Madrasah Aliyah Rajibussalim, Rajibussalim; Yufita, Evi; Zulfalina, Zulfalina; Abdullah, Faisal; Maimun, Teuku
PESARE: Jurnal Pengabdian Sains dan Rekayasa Vol 1, No 1 (2023): Oktober 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/pesare.v1i1.33978

Abstract

A Science Laboratory at Senior High School is an important facility for students in learning Sciences, Technology, Engineering and Mathematics (STEM). Students learn concepts in the classroom and should be able to test and/or prove those concepts in experiments in Science Lab. However, many Science laboratories at schools were not fully operated due to the lack of skillful teachers or lab assistants who can manage Science laboratories with the highest standard and be able to conduct experiments with available KITs in those laboratries. Based on this phenomenon, a group of lecturers from Physics Department of Syiah Kuala University conducted a community service at school in order to share insights and skills related to a good practice in Laboratory management and demonstated how to run Physics experiments with available KITs at a designated school laboratory. The participants of this event were Science teachers and students at the school. Some of the outcomes of this community service are the increase in Laboratory management skills among science teachers at this school and increase in ability to utilise available Science KITs at that school for Physics experiments. The teachers and students were very happy and antusias to participate in this program and be benefited from this activity
Utilization of oyster shell waste (crassostrea gigas) as a source of calcium in hydroxyapatite synthesis Irhamni, Irhamni; Juliana, Eka; Zulfalina, Zulfalina; Fauzi, Fauzi; Jalil, Zulkarnain
Jurnal Geuthèë: Penelitian Multidisiplin Vol 7, No 2 (2024): Jurnal Geuthèë: Penelitian Multidisiplin
Publisher : Geuthèë Institute, Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52626/jg.v7i2.357

Abstract

Biomaterials are materials that interact with living tissues for the purpose of treating and replacing tissues either temporarily or permanently. Biomaterials can be developed from hydroxyapatite-based materials. The source of calcium for the manufacture of hydroxyapatite is obtained from oyster shell waste (Crassostrea gigas) from the waters of Alue Naga Banda Aceh. The purpose of this study was to examine the opportunity to utilize oyster shell waste as a source of calcium for hydroxyapatite synthesis. The hydroxyapatite synthesis process was carried out by calcining oyster shells at a temperature of 10000C for 5 hours to obtain calcium oxide (CaO) content. Then, the CaO powder was reacted with phosphoric acid (H3PO4) to obtain hydroxyapatite compound (Ca10(PO4)6(OH)2) and then sintered at 900C for 2 hours. Analysis of CaO and hydroxyapatite phases was carried out through XRD (X-Ray Diffraction) characterization results. Surface morphology and element content were obtained from SEM-EDS characterization. Based on the analysis, CaO and hydroxyapatite phases have been successfully formed and the surface morphology of hydroxyapatite crystal structure is not clearly visible because of the formation of agglomeration. Based on the elemental content test, the ideal Ca/P ratio has not been obtained. Based on the results of the research, oyster shell waste (Crassostrea gigas) from the waters of Alue Naga, in Syiah Kuala District, Banda Aceh City has the opportunity to be utilized as a source of calcium in hydroxyapatite synthesis and can be developed as a biomaterial.
Co-Authors Evi Yufita Faisal Abdullah Fauzi Fauzi Irhamni Irhamni Juliana, Eka Rajibussalim Rajibussalim Teuku Maimun Zulkarnain Jalil