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All Journal Konversi Jurnal Kesehatan Siliwangi Jurnal Rekayasa Proses
Az-zahra, Syifa
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Dentistry Education Environmental Science Health Professions Immunology & microbiology Medicine & Pharmacology

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Characteristics of PB 260 clone rubber coagulated with natural coagulants: type of Averrhoa Achmad, Feerzet; Deviany, Deviany; Yuniarti, Reni; Fikrah, Faizatul; Az-Zahra, Syifa; Qarimah, Akhlatul; Marlina, Titi; Tambunan, Yonathan Marasi; Rahmadini, Gustia; Damayanti, Damayanti; Suhartono, Suhartono; Suharto, Suharto
Konversi Vol 13, No 1 (2024): April 2024
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v13i1.18724

Abstract

The aim of this research was to determine the properties of the PB 260 clone rubber using the Averrhoa type coagulant. The natural coagulants used in this study were Averrhoa bilimbi and Averrhoa carambola. The latex used was 150 ml of PB 260 clone rubber with a concentration of 100% natural coagulant of 75 ml and 2% formic acid. The rubber properties that were tested were Po, PRI, DRC, ash content, dirt content, volatile matter content and Mooney viscosity. This research also uses a special treatment in the form of centrifugation speed. The higher the centrifugation speed, the higher the pH value of the natural coagulant and the lower the H+ ion value, which accelerates the coagulation time of the latex. In natural coagulant extract, the highest values of Po, PRI, DRC, ash content, dirt content and Mooney viscosity were obtained at 0 rpm for Averrhoa bilimbi extract with values of 40%, 94.17%, 32.83%, 0, 32%, 0.038% and 77 MU. Meanwhile, in the test for volatile matter content, the highest value was found in Averrhoa carambola at 5000 rpm with a value of 0.23%.
PENGEMBANGAN MEDIA KARTU MEMORI CERDIK UNTUK PESERTA POSBINDU RW 02 KELURAHAN CIBABAT Az-Zahra, Syifa; Iryanti
Jurnal Kesehatan Siliwangi Vol. 5 No. 1 (2024): JURNAL KESEHATAN SILIWANGI
Publisher : Politeknik Kesehatan Kemenkes Bandung

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Abstract

Background: Diabetes mellitus is a significant health issue affecting many people in Indonesia. West Java is the province contributing to diabetes mellitus with a population of 550.611 million. One of the reasons for the high number of cases is the lack of public knowledge about diabetes prevention using the CERDIK method). Therefore, there is a need for health promotion media regarding CERDIK behavior. Previous research has proven that paired card media is effective in increasing knowledge and changing the attitudes of the target audience (Agustiawan, 2021). Objective: To develop the CERDIK Memory Card Media for Posbindu RW 02 Kelurahan Cibabat participants. Methods: This research uses R&D (Research and Development) with the 4D development model (define, design, develop, disseminate), with a total sample of 32 respondents. Qualitative and quantitative descriptive data analysis. Results: The material feasibility test by material experts showed a result of 86%, categorized as very feasible; the media feasibility test by media experts showed a result of 98%, categorized as very feasible; and the feasibility test results from material and media showed 97% of the targets rated it as very feasible and 3% rated it as feasible. Conclusion: The CERDIK memory card media is very feasible to be used as educational media. Recommendations: Further research on the impact of CERDIK memory card media on other variables or further development of CERDIK memory cards is recommended.
Perbedaan struktur molekul karet alam dengan proses termal koagulan berdasarkan analisis FTIR Achmad, Feerzet; Simbolon, Yusril Mahendra; Sinaga, Kristomi Yahya; Az-Zahra, Syifa; Yuniarti, Reni; Bindar, Yazid
Jurnal Rekayasa Proses Vol 19 No 1 (2025): Volume 19, Number 1, 2025
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.11875

Abstract

Rubber is one of the most potential and abundant biological natural resources in Indonesia. This research was conducted to determine the content of compounds contained in rubber after coagulation by means of thermal coagulants. There are 2 (two) thermal coagulants used, traditional using firewood and modern using a laboratory oven. Variations in the weight of the latex used were 0.5 kg, 0.75 kg, 1 kg, 1.25 kg and 1.5 kg. Then the results of the thermal coagulant were subjected to the Fourier Transform Infrared (FTIR) test to see the compound content contained in the rubber. The results of the FTIR test on traditional thermal coagulants at high and medium heat and modern thermal coagulants in the oven showed the typical functional groups of rubber, namely the presence of C-H, C=C and C-C carbon bonds.
Co-Authors AA Sudharmawan, AA Damayanti Damayanti Deviany, Deviany Feerzet Achmad Fikrah, Faizatul Iryanti Marlina, Titi Qarimah, Akhlatul Rahmadini, Gustia Reni Yuniarti Simbolon, Yusril Mahendra Sinaga, Kristomi Yahya Suharto Suharto Tambunan, Yonathan Marasi Yazid Bindar