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All Journal Industrial Research Workshop and National Seminar Journal of International Multidisciplinary Research
Lukman Hakim
Universitas Jember
Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Other

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Karakteristik Penyemprotan Campuran Diesel-Biodiesel Minyak Nyamplung dan Etanol Dengan Variasi Tekanan Injeksi Tanu Alifuddin D. S; Lukman Hakim; Nasrul Ilminnafik; Moh. Nurkoyim
Prosiding Industrial Research Workshop and National Seminar Vol 11 No 1 (2020): Prosiding 11th Industrial Research Workshop and National Seminar (IRWNS)
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (361.744 KB) | DOI: 10.35313/irwns.v11i1.2034

Abstract

Karakteristik penyemprotan adalah parameter penting dalam kinerja mesin dan emisi gas buang. Karakteristik penyemprotan menentukan kualitas pembakaran pada mesin diesel. Tujuan penelitian ini adalah mempelajari karakteristik penyemprotan campuran bahan bakar diesel-biodiesel minyak nyamplung-etanol terhadap spray tip penetration, velocity of spray, dan spray angle. Metode penelitian menggunakan metode ekperimental dengan tekanan injeksi 15 MPa, 17 MPa, 20 MPa dan tekanan ambient chamber 2 bar. Bahan bakar menggunakan diesel 100%, Biodiesel minyak nyamplung 20% (B20) dengan campuran etanol 5% (BD20E5), Biodiesel minyak nyamplung 20% (B20) dengan campuran etanol 10% (BD20E10). Berdasarkan hasil eksperimen penelitian ini, peningkatan tekanan injeksi menyebabkan karakteristik spray tip penetrasi lebih panjang, velocity of spray lebih tinggi, dan lebih kecil spray cone angle. Penambahan etanol pada bahan bakar biodiesel minyak nyamplung mengakibatkan spray tip penetration akan sedikit lebih pendek, velocity of spray lebih kecil, dan spray angle akancenderung lebih besar.
Literature Study Of Restaurant Tax Collection With Online System Implementation Cici Tri Jayanti; Yulia Novita Sari; Ella Juwitasari; Lukman Hakim; Krisna Putra; Nurcahyaning Dwi Kusumaningrum
Journal of International Multidisciplinary Research Vol. 1 No. 2 (2023): Desember 2023
Publisher : PT. Banjarese Pacific Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62504/9szzjt77

Abstract

This study aims to determine the implementation of restaurant tax collection with an online system in several regions in Indonesia. This research uses the method of literature study. The literature study method is a method by collecting and reviewing some previous research and then drawing conclusions from the previous research. The results obtained from the study of several literature are obstacles and supporting factors of online system implementation in several regions are more or less the same and there are some differences. The influencing factor is the quantity of tools and human resources in each region. This can affect the income of these areas.
Co-Authors Cici Tri Jayanti Ella Juwitasari Krisna Putra Moh. Nurkoyim Nasrul Ilminnafik Nurcahyaning Dwi Kusumaningrum Tanu Alifuddin D. S Yulia Novita Sari