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All Journal Jurnal Polimesin Jurnal Ragam Pengabdian
Faizi, Achmad
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Automotive Engineering Control & Systems Engineering Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Physical property analysis of biodiesel from nyamplung and used cooking oil: density, viscosity, calorific value, and flash point Wahyudi, Wahyudi; Nadjib, Muhammad; Faizi, Achmad
Jurnal Polimesin Vol 22, No 2 (2024): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i2.4565

Abstract

The increasing dem and for energy and the depletion of fossil fuel shas led to the exploration of alternative fuels like biodiesel, which require sref inement tomatch diesel oil properties. This study investigates the combination of nyamplung oil, a non-edible potential source, with waste cooking oil for biodiesel production, aiming to improve its physical properties. Through a method ological approachin volving degumming, esterification, and transesterification, biodiesel was produce dfrom these oils in 11 different blend compositions. The physical properties of these blends, including density, viscosity, flashpoint, and calorific value, were rigorously tested. Results indicate that incorporating waste cooking oil into nyamplung biodiesel significantly reduces viscosity, density, and flashpoint while increasing the calorific value. Specifically, the addition of waste cooking oil altered the density from 912.74 kg/m³ in pure nyamplung biodiesel to 857.27 kg/m³, decreased the viscosity from 28.02 cStto 4.58 cSt, reduced the flash point from 223°C to 197°C, and increased the heating value from 7,626.59 cal/g to 8,348.94 cal/g.
Model Integratif Storytelling Berbasis Kearifan Lokal Dan Media Interaktif Dalam Penguatan Pendidikan Karakter Anak Usia Dini Fatmawati, Fitria Desiana; Faizi, Achmad; Hardinanto, Eko
Jurnal Ragam Pengabdian Vol. 3 No. 2 (2026): Mei-Agustus, Sustainable Development Goals (SDGs): Multidisciplinary Perspectiv
Publisher : Lembaga Teewan Journal Solutions

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62710/jnf3zm26

Abstract

Character education in early childhood requires a learning strategy capable of instilling values ​​in a meaningful and sustainable manner. This study aims to analyze the effectiveness of storytelling methods in instilling character values ​​in early childhood and examine the strengthening of its implementation through the integration of media and learning contexts. The study used a qualitative approach with a descriptive design and was conducted at Raudhatul Athfal Al Khotib with fifteen children aged five to six years as subjects. Data were collected through observation, interviews, and documentation over a three-month period. The results showed that storytelling methods were able to increase children's empathy and cooperation behavior, demonstrated through sharing, helping friends, and active involvement in group activities. However, some children were still inconsistent in applying character values ​​in real situations, so that internalization of values ​​was not optimal. The research findings also showed that the effectiveness of storytelling methods increased when combined with interactive visual media, local wisdom content, and reflection activities that encourage a deeper understanding of values. The novelty of this study lies in the development of an integrative model that combines narrative, interactive media, cultural context, and reflection as a strategy to strengthen character education. Thus, storytelling methods function not only as a means of conveying stories, but also as a comprehensive strategy to develop early childhood character more effectively and sustainably.
Co-Authors Fatmawati, Fitria Desiana Hardinanto, Eko Muhammad Nadjib, Muhammad Wahyudi Wahyudi