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All Journal CHEMPUBLISH JOURNAL Pendas : Jurnah Ilmiah Pendidikan Dasar
Hariz, Abdul
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Chemical Engineering, Chemistry & Bioengineering Chemistry Other

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PELAPISAN HIDROKSIAPATIT- POLYCAPROLACTONE PADA PERMUKAAN STAINLESS STEEL 316L DENGAN METODE DIP COATING Fadli, Ahmad; Hariz, Abdul; Helianty, Sri; Rifaldi, Muhammad
Chempublish Journal Vol. 8 No. 2 (2024): Chempublish Journal
Publisher : Department of Chemistry, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/chp.v8i2.30842

Abstract

Stainless steel 316L is a metal that can be used for bone implants but exhibits low biocompatibility. The low biocompatibility can lead to inflammation, infection, or rejection within the body's tissue system. It is coated with hydroxyapatite-polycaprolactone to enhance the biocompatibility of stainless steel 316L. This study aims to examine the effects of stirring time, stirring speed, and the appropriate hydroxyapatite-polycaprolactone ratio on the shear strength of hydroxyapatite-polycaprolactone using the dip coating method and to determine the empirical model for the resulting shear strength of the hydroxyapatite-polycaprolactone layer. Hydroxyapatite and polycaprolactone were mixed using acetone and stirred at a speed of 150 rpm for 20 hours. Then, the stainless steel 316L substrate was immersed in the suspension and dried at 56°C for 1 hour. The process conditions optimization in this study employed a 2k modeling approach. The empirical shear strength model in this research is represented as y = -216.9 + 36.42A + 1.426B + 14.43C - 0.2345AB - 2.380AC - 0.08943BC + 0.01468AB*C, with an R2 value of 0.99. The variables with the most significant influence on shear strength, ranked from largest to smallest, are the HA-PCl ratio (A), followed by the two-way interaction between the HA-PCl ratio (A) and stirring speed (B), the three-way interaction between the HA-PCl ratio (A), stirring speed (B), and stirring time (C), followed by the two-way interaction between the HA-PCl ratio (A) and stirring time (C), stirring time (C), stirring speed (B), and the two-way interaction between stirring speed (B) and stirring time (C). The highest shear strength of the hydroxyapatite layer was achieved at a HA-PCl ratio of 5:1.5, stirring speed of 150 rpm, and stirring time of 20 hours, with a value of 5.71 MPa
NILAI SOSIAL DAN RELIGIUS DALAM TRADISI BARODAK PADA MASYARAKAT SAMAWA DI DESA MAPIN REA KECAMATAN ALAS BARAT (STUDI KASUS DI DESA MAPIN REA KECAMATAN ALAS BARAT KABUPATEN SUMBAWA) Hariz, Abdul; Muhammad Ilyas; Suud; Masyhuri
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 9 No. 03 (2024): Volume 09 No. 03 September 2024
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v9i03.16676

Abstract

Research objectives: (1) to know the process of the Barodak tradition (2) to know the social values in the Barodak tradition (3) to know the religious values in the Barodak tradition. This research uses a qualitative approach with a case study research method. The type of data in this research uses primary data and secondary data. The data contained in this research comes from subjects and expert informants with data collection techniques using interview techniques followed by observation and documentation. Data analysis uses qualitative analysis techniques with stages of data reduction, data presentation and drawing conclusions. The results of the research show that (1) there are 3 processes in the barodak tradition, namely preparation of the barodak, implementation of the barodak and closing of the barodak. (2) There are 3 social values in the barodak tradition, namely human values, freedom values and solidarity values. (3) There are 4 religious values In the Barodak tradition, namely the value of worship, moral value, trust value and sincerity value.Keywords: Barodak Tradition Process, Barodak Tradition Social Values, Barodak Tradition Realistic Values.
Co-Authors Ahmad Fadli Masyhuri Muhammad Ilyas Rifaldi, Muhammad Sri Helianty Suud