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All Journal Administratio : Jurnal Ilmiah Administrasi Publik dan Pembangunan Jurnal Teori dan Aplikasi Fisika Journal of Technomaterial Physics
Muhammad Sontang Sihotang
Universitas Sumatera Utara
Astronomy Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics Other

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Utilization of Scallop Shells (Placuna placenta) for Potential Water Filter Prototype in Jaring Halus Village, Jaring Halus-Langkat District and the Characterization Test Sihotang, Muhammad Sontang
Journal of Technomaterial Physics Vol. 4 No. 1 (2022): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v4i1.7395

Abstract

Indonesia is a maritime country that has abundant marine wealth. Unfortunately, most fishers still live in poor conditions, including Jaring Halus Village, Secanggang District, Langkat Regency, North Sumatra Province. Previous research has shown that there is much coastal waste, such as Scallop Shells (Placuna placenta), that are not treated, even though it has the potential to help people who are experiencing water crises to get clean water sources. This study aimed to characterize the shells of Scallops and produce calcium carbonate as an activated carbon product to produce clean water. The method used to characterize the mashed scallop shells is X-Ray Diffraction (XRD). In this study, three different sizes, namely 25 μm, 90 μm, and 150 μm, will be compared, and the size and quality selected to produce the best calcium carbonate were tested at different temperatures, namely 800°C, 900°C, 1000°C, and 1100°C. In the x-ray diffraction analysis test, the smallest particle is 25 μm, which has the highest intensity compared to other sizes. The best particle size, which is heated/calcined at a temperature of 1100, has the highest intensity, which can remove all impurities and produce natural calcium carbonate, which is more stable. Based on the study results, it can be concluded that the best calcium carbonate is produced from particles with a size of 25 μm which are calcined at the highest temperature of 1100°C.
Triple Helix Collaboration Model for Improving the Performance of Socio-Economic Empowerment Programs for Traditional Fishing Families in Medang Deras Dara Aisyah; Muhammad Sontang Sihotang; M Deny Effendy Tambusay
Administratio Vol 16 No 1 (2025): Administratio: Jurnal Ilmiah Administrasi Publik dan Pembangunan
Publisher : Jurusan Ilmu Administrasi Publik, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/administratio.v16i1.481

Abstract

Fishermen empowerment programs have thus far failed to sustainably improve the socio-economic conditions of fishing families. According to data from Statistics Indonesia (BPS) in 2023, the national poverty rate remains at 9.36%, far from the 0% poverty target set for 2024, with 70% of the poor population residing in coastal areas, most of whom are engaged in fishing. This failure is attributed to the government's lack of preparedness in understanding the actual conditions of coastal communities, as well as the absence of coordination with innovative university research in the design of empowerment programs. The gap between key actors has rendered intervention efforts less effective. This study aims to integrate the Triple Helix collaboration model as an innovative approach to improve the performance of socio-economic empowerment programs for traditional fishing families by utilizing local waste potential into calcium-based product innovation. The research was conducted in two hamlets of Nelayan Village, Medang Deras Subdistrict, Batubara Regency, North Sumatra, using a social engineering approach through the Participatory Action Research method over one year. The intervention involved mentoring and knowledge transfer through socialization, focus group discussions (FGDs), and training for fisher households. The findings show that the majority of fishers live in conditions of structural poverty, with daily incomes below IDR 50,000 and trapped in debt cycles with middlemen. The training and mentoring intervention on coastal waste processing into calcium-based product innovation successfully led to the formation of innovation-based fisher groups, formalized through the signing of an Institutional Arrangement (IA) with the subdistrict government, which was subsequently adopted as a policy. This study not only presents a contextually relevant collaborative model but also offers a prototype of an empowerment system that is collaborative, circular, and rooted in local needs and potential.
Analisis Efisiensi Deteksi Partikel Alfa Dengan Partikel Gamma Pada Perangkat Geiger Muller Muhammad Sontang Sihotang; Lilik Waldiansyah; David A Silaban
Jurnal Teori dan Aplikasi Fisika Vol. 13 No. 02 (2025): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v13i02.470

Abstract

Detektor Geiger Muller (GM) adalah alat penting dalam pengukuran radiasi, tetapiefisiensinya dalam mendeteksi sinar alfa dibandingkan gamma masih belum sepenuhnya dipahami,terutama terkait pengaruh ukuran dan bahan detektor. Penelitian ini bertujuan mengevaluasi efisiensideteksi sinar alfa terhadap sinar gamma pada tiga jenis detektor GM dengan spesifikasi berbeda. Sumberradiasi Np-237 digunakan untuk menghasilkan sinar gamma, sementara sinar alfa berasal dari sumberAm-241. Aluminium foil digunakan sebagai penghalang untuk memisahkan radiasi alfa dan gamma.Tiga detektor GM dengan radius berbeda (Detektor 1: 1 8,70 mm, Detektor 2: 14,50 mm, Detektor 3:23,15 mm) diuji untuk efisiensi deteksinya. Hasil menunjukkan efisiensi deteksi sinar alfa terhadapgamma bervariasi, dengan Detektor 2 mencapai efisiensi tertinggi sebesar 3,87%, sementara Detektor1 dan 3 hanya 0,75% dan 0,87%. Variasi ini disebabkan oleh kerapatan bahan detektor yangmemengaruhi interaksi radiasi dan ukuran permukaan detektor yang memengaruhi jumlah radiasiterdeteksi. Detektor 2 yang lebih kecil memiliki optimasi efisiensi karena desain dan kerapatan yangmendukung. Efisiensi deteksi sinar alfa terhadap gamma pada detektor GM dipengaruhi oleh kerapatanbahan dan ukuran permukaan, dengan Detektor 2 menunjukkan efisiensi tertinggi sebesar 3,87%. Kata kunci: Efisiensi deteksi, radiasi alfa, radiasi gamma, detektor Geiger Muller, proteksi radiasi.
Co-Authors Dara Aisyah David A Silaban Lilik Waldiansyah M Deny Effendy Tambusay