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Menampilkan 1–6 dari 6 artikel
Effect of Biomass Feedstock Granulometry on Thermophysical Characteristics of Charcoal Briquettes via Screw Extrusion
Samsudin Anis
; Jefri Bale
; Septian Eko Cahyanto
; Ninda Kurniadi
; Fitriyana, Deni Fajar
; M. Thooriq Anwar
; Januar Parlaungan Siregar
; Natalino Fonseca Da Silva Guterres
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 4
(2025)
The present study investigates the impact of particle size variation (10, 18, 20, and 35 mesh) on the physical and thermal properties of charcoal briquettes from coconut shells manufactured with a screw-based extruder machine. The briquette manufacturing process involves crushing, mixing, molding, and drying. Assessments were conducted to ascertain friability, compressive strength, density, calorific value, volatile matter, ash content, fixed carbon, and water content. Comparable assessments wer...
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The Effect of Working Hours of The Ship's Main Engine on The Temperature of The Fresh Water Cylinder Cooling System In Diesel Engines
Majalah Ilmiah Momentum
Vol 21
, No 2
(2025)
Main propulsion engines on commercial ships are generally of the diesel type, necessitating precise and stable thermal conditions for efficient operation. To ensure this thermal stability, the engine's cylinders are equipped with a dedicated freshwater cooling system. The primary objective of this study was to ascertain the correlation between fluctuating operating hours and temperature variations within the engine's cylinder cooling system. The resulting data will inform the establishment of a...
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Sistem pengambilan keputusan untuk pemilihan lokasi usaha menggunakan metode electre berbasis website
IT-Explore: Jurnal Penerapan Teknologi Informasi dan Komunikasi
Vol 4
, No 3
(2025)
Choosing a strategic business location is a key factor in building a successful enterprise, especially in Lautem Municipality, Timor-Leste. This area presents various opportunities for businesses such as grocery shops, small restaurants, repair workshops, and agricultural ventures. However, entrepreneurs often face challenges like poor road infrastructure, limited purchasing power, and inadequate transport access. This study developed a web-based Decision Support System (DSS) using the ELECTRE m...
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Effect of Natural Fiber Stacking Sequence on the Properties of Hybrid Composites for Drone Frame Applications
Janiviter Manalu
; Jefri Bale
; Khristhoper Aris Arianto Manalu
; Frans Augusthinus Asmuruf
; Fitriyana, Deni Fajar
; Nizar Alamsyah
; Januar Parlaungan Siregar
; Al Ichlas Imran
; Tezara Cionita
; Natalino Fonseca Da Silva Guterres
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 4
(2025)
The present study highlights the effective utilization of waste fibers in structural composites for drone frame applications, offering a sustainable pathway for developing high-performance materials while simultaneously addressing the issue of textile waste pollution. This study investigates the effect of ramie and cotton fiber waste fabric stacking sequences on the physical and mechanical properties of composites for quadcopter drone frames. Waste fabric was selected as an eco-friendly material...
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Analisis Laporan Sistem Akuntabilitas Kinerja Instasi Pemerintah Terhadap Kinerja Sekretariat DPRD Kabupaten Sikka Tahun 2023
JURNAL EKONOMI MANAJEMEN AKUNTANSI
Vol 30
, No 2
(2024)
This study aims to analyze the effect of the implementation of the Government Agency Performance Accountability System (SAKIP) on the performance of the Sikka Regency DPRD Secretariat in 2023. The approach to this study is descriptive qualitative using primary and secondary data. Data were collected through interviews, observations and documentation of SAKIP reports. The results of the study indicate that the implementation of SAKIP has not been fully optimal, especially in terms of collecting p...
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ANALISIS KOMPOSISI SELULOSA, HEMISELULOSA, DAN LIGNIN DALAM BERBAGAI JENIS KAYU : METODE CHESSON-DATTA
Jurnal Inovasi Teknik Kimia
Vol 8
, No 4
(2023)
Sumber daya terbarukan yang paling melimpah di dunia adalah kayu, dimana memiliki tiga komponen utamanya yaitu selulosa, hemiselulosa dan lignin. Selulosa merupakan biopolymer yang paling melimpah, kemudian lignin yang menyumbang 15 – 40% berat kayu. Tujuan dari penelitian ini adalah uji proksimat yang berasal dari berbagai jenis kayu, seperti kayu jati, mahoni, sengon, dan eceng gondok. Analisis proksimat ini mencakup kandungan selulosa, hemiselulosa, lignin, dan kadar abu dalam masing-masing...
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