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All Journal Chemistry Indonesian Journal of Chemical Research Jurnal Ilmiah Cendekia Eksakta Jurnal Nuansa Akademik: Jurnal Pembangunan Masyarakat Serambi Engineering
Rebia, Rina Afiani
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Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Medicine & Pharmacology Social Sciences

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Pelayanan Kesehatan Gratis Untuk Warga Lanjut Usia Di Desa Kurahan Annisa, Viviane; Henityastama, Milinian Tree Multi; Wibowo, Rizky; Ariansyah, Damas Baik; Febrina, Binta Setya; Nugroho, Arie; Muhammad, Hasman Zhafiri; Rebia, Rina Afiani; Tuti Hidayah; Bella Novita Muktiari
Nuansa Akademik: Jurnal Pembangunan Masyarakat Vol. 9 No. 2 (2024)
Publisher : Lembaga Dakwah dan Pembangunan Masyarakat Universitas Cokroaminoto Yogyakarta (LDPM UCY)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47200/jnajpm.v9i2.2531

Abstract

This community service activity was carried out in Kurahan Village, Sidoarum Village, Godean District, Sleman Regency, with a focus on the elderly with an age range of 40 to 70 years who are a vulnerable group that often faces various chronic health problems such as diabetes, hypertension, heart disease, mobility disorders, and mental health. Given the importance of access to health for the elderly, who are often constrained by economic, transportation, and information factors, this activity aims to provide accessible and quality health services. This activity involves a medical team consisting of orthopedic specialists, mental health specialists, and pharmacists. This health check service includes consultation, health checks, and the provision of free medicines. The number of participants who participated was 85 participants, consisting of 66 women and 19 men. The results of the activity showed high enthusiasm from the community, where most participants were satisfied or very satisfied with the services provided. This activity not only met the participation target but also succeeded in increasing the awareness of the elderly to be more proactive in maintaining their health. This was evidenced by the commitment of the participants to conduct routine health checks, visit the clinic if sick, follow a healthy lifestyle, and comply with recommendations to take medication regularly.
Potential of Shredded Ramie Fibers as Reinforcement in Recycled Polypropylene Composites: Analysis of Tensile and Bending Strength Rebia, Rina Afiani; Sabila, Faroh; Primananda, Ade
Indonesian Journal of Chemical Research Vol 12 No 3 (2025): Edition for January 2025
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2025.12-reb

Abstract

In the development of composite technology, synthetic fiber reinforcers are gradually being replaced by natural fibers. This shift is driven by growing awareness of environmental issues and the scarcity of petroleum resources, prompting researchers to explore the potential of natural fibers. This study used scraped ramie fiber (SRK) as a reinforcer, with recycled polypropylene (PP) serving as the matrix. The mixture ratios used between PP/SRK (%) were as follows: 90/10, 80/20, 70/30, 60/40, and 50/50. Before use, the scraped ramie fiber (SRK) was subjected to pretreatment with 5% NaOH to improve the mechanical bonding. The hot press technique was used to fabricate the PP/SRK composite. The physical and mechanical properties of the PP/SRK composite were analyzed through weight, thickness, volume, density, tensile strength, and bending strength measurements. The results of physical measurements obtained density values ​​for all samples between 0.73 - 0.76. The tensile test results showed a maximum stress value of 9.91 MPa and a strain value of 7.60% at the PP/SRK ratio 50/50. Then, the maximum modulus of rupture (MOR) was 23.49 MPa, and the modulus of elasticity (MOE) was 1.78 GPa at the PP/SRK ratio of 50/50.
Pengaruh Variasi Serat Rami, Limbah Rami, dan Rami Kerok sebagai Penguat Terhadap Kekuatan Tarik Papan Komposit Polipropilena Daur Ulang Primananda, Ade; Sabila, Faroh; Rebia, Rina Afiani
Jurnal Serambi Engineering Vol. 10 No. 2 (2025): April 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The purpose of this study was to evaluate the mechanical properties of composites made from recycled polypropylene reinforced with natural ramie fiber (SR), ramie waste fiber (LR), and scraped ramie fiber (RK). Recycled polypropylene was used as the binder material, while ramie fiber (SR), ramie waste fiber (LR), and scraped ramie fiber (RK) were processed by alkalization to improve the adhesion between the layers. Composite fabrication was performed by varying the ratio between matrix and reinforcer A (70/30), B (60/40), and C (50/50) using a hot press machine. Tensile test was performed according to ASTM D-638 standard. The test results showed that the composite reinforced with scraped ramie fibers (RK) produced a maximum stress of 9.26 MPa at the A3 (70/30) ratio, and the highest strain reached 7.6% at the B3 (60/40) and C3 (50/30) ratios. The more uniform structure of scraped ramie fibers (RK) was shown to contribute to a better stress distribution compared to ramie fibers (SR) and ramie waste (LR). Thus, scraped ramie fibers (RK) can be identified as the most optimal reinforcing material for recycled polypropylene composites.
ANALISIS MEKANIK LEMBARAN PLASTIK HASIL PENGOLAHAN LIMBAH MASKER MEDIS TIGA LAPIS DENGAN VARIASI BERAT Budiman, Ahmad Satria; Rebia, Rina Afiani; Hidayah, Febrianti Nurul; Septyani, Dwi Wulan; Isla, Syifa Ainul
CENDEKIA EKSAKTA Vol. 7 No. 2 (2022)
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/ce.v7i2.7522

Abstract

Penggunaan masker sekali pakai terkait pandemi Covid-19 di satu sisi melindungi pemakainya dari virus, namun di lain sisi menimbulkan permasalahan terhadap lingkungan. Oleh karena itu, dilakukan sejumlah upaya daur ulang limbah masker, salah satunya dengan mengolahnya menjadi material baru, seperti produk interior, bijih plastik, dan adsorben pada limbah cair industri laundry. Penelitian ini bertujuan untuk menganalisis sifat mekanik lembaran plastik hasil pengolahan limbah masker sekali pakai jenis masker medis tiga lapis (3 ply) dengan variasi berat. Metode yang digunakan adalah tekan panas (hot press) dengan variasi berat 10 gr, 20 gr, 30 gr, 40 gr, 50 gr, dan 60 gr. Pengujian yang dilakukan adalah uji tarik, mulur, dan ketebalan sampel. Hasil dari penelitian menunjukkan bahwa pertambahan berat meningkatkan kekuatan tarik, mulur, dan ketebalan. Sampel dengan berat 10 gr memiliki kekuatan tarik, mulur, dan ketebalan terendah, yaitu masing-masing 0,001 MPa, 0,311%, dan 0,143 mm. Sedangkan sampel dengan berat 60 gr memiliki kekuatan tarik, mulur, dan ketebalan tertinggi, yaitu masing-masing 0,023 MPa, 1,155%, dan 0,837 mm.Kata kunci: mulur, ketebalan, kekuatan tarik, limbah masker, tekan panas
Co-Authors Annisa, Viviane Ariansyah, Damas Baik Arie Nugroho, Arie Bella Novita Muktiari Budiman, Ahmad Satria Febrina, Binta Setya Henityastama, Milinian Tree Multi Hidayah, Febrianti Nurul Isla, Syifa Ainul Muhammad, Hasman Zhafiri Primananda, Ade Sabila, Faroh Septyani, Dwi Wulan Tuti Hidayah Wibowo, Rizky