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All Journal Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin Indonesian Mining Journal Teknologi Indonesia Metalurgi Jurnal Teknologi Bahan dan Barang Teknik Journal Research of Social Science, Economics, and Management Innovative: Journal Of Social Science Research Indonesian Mining Journal JURNAL REKAYASA KIMIA & LINGKUNGAN
Fajar Nurjaman
UPT Balai Pengolahan Mineral Lampung, LIPI Jln. Ir. Sutami Km. 15 Tanjung Bintang, Lampung Selatan, 35364
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Utilization of Digitalization in Improving the Quality of Services and Information in Sumurkondang Village, Cirebon Fauziah, Merlinda Intan; Nurjaman, Fajar; Firizki, Rayhan Syawal; Fitriyanti, Elvira; Suryalaksana, Alif
Journal Research of Social Science, Economics, and Management Vol. 4 No. 10 (2025): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v4i10.858

Abstract

Digitalization plays a transformative role in improving public service delivery and information dissemination, particularly in rural areas. This study explores the implementation of digitalization in Sumurkondang Village, Cirebon, and its effects on administrative efficiency, accessibility, and community involvement. Employing a qualitative approach with a descriptive case study design, the research involved in-depth interviews, participatory observations, and document analysis. The findings reveal that digitalization improves service quality and ease of access, particularly among younger residents. However, challenges such as low digital literacy among older populations, limited infrastructure, and lack of awareness hinder widespread adoption. Despite some basic digital training conducted by the village government, participation remains low, and skepticism toward digital platforms persists among older users. The study concludes that while digitalization holds great promise for rural development, its success depends on inclusive training, stronger infrastructure, and active community engagement. Recommendations include targeted digital literacy programs, improved internet access, and collaborative efforts between local governments and external partners. These efforts can foster sustainable digital transformation and serve as a model for similar rural communities in Indonesia.
Analisis tekno ekonomi teknologi pengolahan bijih nikel laterit menjadi Nickel Pig Iron (NPI) menggunakan Hot Blast Cupola Furnace Herlina, Ulin; Nurjaman, Fajar; Handoko, Anton Sapto; Shofi, Achmad
Dinamika Teknik Mesin Vol 10, No 1 (2020): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v10i1.322

Abstract

Processing technology on nickel laterite ore to becomeNickel Pig Iron (NPI) using Hot blast cupola furnace issuch technology developed to push up the growth ofprocessing industry iron/steel contains nickel inIndonesia. The need of this technology is more urgentlyalong with the enforcement of regulation no 4/2009 inmineral and coal mining law, which prohibits all industryto export raw mineral products without preliminaryprocess. For this reason, in this research, technoeconomicanalysis for designing nickel lateriteprocessing plant to become NPI using hot blast cupolafurnace was carried out. This research was conductedbased on several data processes taken from nickellaterite smelting using hot blast cupola furnace. Technoeconomic analysis showed processing nickel laterite oreto become NPI using 3 units of hot blast cupola furnacewith total capacity 9 ton/day at kabupaten SouthKonawe, Southeast Sulawesi province was feasible tobe carried out, whereas feasibility investment score wasfair enough. The net present value (NPV) was IDR11,278,271,245, and internal rate of return (IRR) was23.28% with a payback period (PBP) of 4 years and 10months.
Studi pengaruh kadar mangan dan temperatur austenisasi terhadap struktur mikro dan sifat mekanik baja mangan Bahfie, Fathan; Aleiya, Zakhrofa; Milandia, Anistasia; Nurjaman, Fajar
Dinamika Teknik Mesin Vol 10, No 1 (2020): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v10i1.317

Abstract

High manganese steel or austenitic manganese steelcommonly are used in mining industries such as thecomponent in an excavator, hammer mill, crusher, andjaw crusher plates. Those components are the alloy caststeel with containing manganese (Mn) about 11-18%.The mechanical properties of austenitic manganesesteel are depending on the amount of manganese andcarbon. The austenitic steel has three dominantproperties, i.e. high hardness; good wear resistance, andhigh impact resistance. The objectives of this researchare investigating the effect of the composition ofmanganese and the austenitization temperature on themicrostructure and mechanical properties of austeniticmanganese steel. Each variation of manganesecomposition was 5.87%. 9.42% and 15.28%. It washeated at 950, 1000 and 1050oC for 60 minutes and thenquenched with water. The result showed that the highesthardness was 46 HRC where the composition ofmanganese and the austenitization temperature was5.87%. and 1050oC. The lowest hardness number was16.3 HRC where the content of manganese and thetemperature was 9.42%. and 1050oC. The results agreedwith the microstructure of the increase in carbides andthe composition of manganese increased too. For thewear resistance properties, the optimum one was 6.78 x10-6 mm3/m at the composition of manganese andtemperature of 5.87% and 1050oC.
Co-Authors Aleiya, Zakhrofa Anistasia Milandia, Anistasia Anton Sapto Handoko, Anton Sapto Aritonang, Partogi A.F. Azwar Manaf Bahfie, Fathan Diah Susanti Ediman Ginting Eko Nugroho Erik Prasetyo Firizki, Rayhan Syawal Fitriyanti, Elvira Herlina, Ulin Karo Karo, Pulung Merlinda Intan Fauziah Prasetyo, Arif Eko Prilitasari, Nurbaity Marsas Shofi, Achmad Sipahutar, Wahyu Solafide Sofi, Achmad Suryalaksana, Alif Tumpal Ojahan, Tumpal Wahyuningsih Wahyuningsih Widi Astuti