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All Journal MEANS (Media Informasi Analisa dan Sistem) Jurnal Teknologi
Nisrina, Dian
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Mechanical Engineering

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Pemanfaatan Minyak Sereh Wangi sebagai Zat Aditif untuk Meningkatkan Karakteristik Biodiesel B30 Nisrina, Dian; Harunsyah, Harunsyah; Zaini, Halim
Jurnal Teknologi Vol 24, No 2 (2024): Oktober 2024
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v24i2.5726

Abstract

The use of petroleum as fuel is currently very limited and cannot be renewed on a relevant human scale. The increasing demand for petroleum, including diesel, has resulted in increased dependence on resources. The use of diesel as fuel has a negative impact on the environment. To reduce the negative impacts caused, other fuel derivative products can be developed, namely biodiesel. One alternative to increase fuel efficiency and reduce pollution is to reformulate fuel with additives, namely citronella oil, which functions to enrich the oxygen content in the fuel. The purpose of this study was to determine the effect of variations in the addition of citronella oil volume and temperature on the characteristics of B30 biodiesel. This study was conducted using an experimental design method by varying the volume of citronella oil 0; 2; 4; 6; 8; 10 mL and temperatures of 30°C, 35°C, 40°C, 45°C, 50°C. The results showed that the addition of citronella oil with temperature variations was able to improve the characteristics of B30 biodiesel. The best variation is the addition of 4 mL of citronella oil at a temperature of 40 °C resulting in the highest viscosity value of 4.318 cSt, density of 836.41 kg/m3, cetane number of 67.9 and flash point value of 79°C. In this study, the data produced is in accordance with SNI in terms of viscosity, density, cetane number, and flash point.
Analisis Kepuasan Konsumen Menggunakan Metode Algoritma C4.5 Berbasis Rapidminer Pada PT. Adeaksa Indo Jayatama Nisrina, Dian; Kustiyono, Kustiyono
MEANS (Media Informasi Analisa dan Sistem) Volume 9 Nomor 1
Publisher : LPPM UNIKA Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/means.v9i1.3710

Abstract

In the era of globalization and digital 4.0, the development of technology and the internet plays an important role for human survival. PT. Adeaksa Indo Jayatama, as a provider of telecommunications and internet services, seeks to meet consumer needs with the DexaNet product which offers stable internet connections using fiber optic and wireless broadband. This research uses the C4.5 algorithm method and data mining using the RapidMiner platform to analyze consumer satisfaction. The research results show that the factors that influence consumer satisfaction are facilities and infrastructure, trusted providers, responsiveness, service quality, and stable network. The C4.5 algorithm implemented using RapidMiner has proven to be effective in analyzing customer satisfaction and providing valuable insights for the Company in improving service quality and customer satisfaction.
Co-Authors Halim Zaini, Halim Harunsyah, Harunsyah Kustiyono Kustiyono