Vol. 57 No. 6 (2025): Vol. 57 No. 6 (2025): December

DOI: https://doi.org/10.5614/j.eng.technol.sci.2025.57.6

Published: 2025-10-28

Articles

The Effect of Ignition Timing on Combustion of Ammonia/Ethanol Mixtures in Spark-Assisted Compression Ignition Engine with a Sub-chamber

DOI: https://doi.org/10.5614/j.eng.technol.sci.2025.57.6.1

Takanobu Okada, Mitsuhisa Ichiyanagi, Emir Yilmaz, Takashi Suzuki, Hikaru Shiraishi, Eric Le Roy Ngwompe Souop, Evan Widjaja, Jason Sutedjo, Christian Dennis Marcelo, Ferdinand Ronaldo Tjiotijono, Gabriel Jeremy Gotama, Willyanto Anggono

735-746
- Abstract
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10.5614/j.eng.technol.sci.2025.57.6.1
Developing Carbon Nanofibers from Gnetum Gnemon Linn Pericarp Using Dual Activators KOH And Melamine as Innovative Electrode Materials for Supercapacitors

DOI: https://doi.org/10.5614/j.eng.technol.sci.2025.57.6.2

Rakhmawati Farma, Hardini Chania Putri, Irma Apriyani, Luqyana Adha Azwat, Awitdrus Awitdrus, Mohamad Deraman, Ari Sulistyo Rini, Rahmondia Nanda Setiadi, Erman Taer

747-759
- Abstract
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10.5614/j.eng.technol.sci.2025.57.6.2
Crashworthy Structure Analysis of Indonesia's First High-speed Train Trailer Made from Aluminum Extrusion

DOI: https://doi.org/10.5614/j.eng.technol.sci.2025.57.6.3

Achmad Syaifudin, Khakim Muh Luqman

760-775
- Abstract
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10.5614/j.eng.technol.sci.2025.57.6.3
Influences of Groove Geometries on Bend Radius and Springback in V-Bending

DOI: https://doi.org/10.5614/j.eng.technol.sci.2025.57.6.4

Quoc-Nguyen Banh, Viet-Khai Le, Anh-Chuong Le, Anh-Son Tran, Minh-Tuan Ho

776-790
- Abstract
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10.5614/j.eng.technol.sci.2025.57.6.4
Multi-criteria Decision Making to Improve Displacement Amplification Ratio of an Amplifying Compliant Mechanism Flexure Hinge

DOI: https://doi.org/10.5614/j.eng.technol.sci.2025.57.6.5

Ngoc Thai Huynh, Van Nam Huynh, Quoc Nhiem Tran, Chi Bao Phan, Minh Hung Vu, Trieu Khoa Nguyen, Quoc Manh Nguyen

791-816
- Abstract
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10.5614/j.eng.technol.sci.2025.57.6.5
Classifying Rockburst Events and Intensity in Underground Mines using Grey Wolf Optimization–Support Vector Machine and Extreme Gradient Boosting

DOI: https://doi.org/10.5614/j.eng.technol.sci.2025.57.6.6

Adhitya Dwi Nugraha, Ridho Kresna Wattimena, Bevina Desjwiandra Handari, Gatot Hertono

817-830
- Abstract
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10.5614/j.eng.technol.sci.2025.57.6.6
Electrochemiluminescence sensor based on GDYO-QD@M-ZnO and its application in the detection of free radicals and antioxidants

DOI: https://doi.org/10.5614/j.eng.technol.sci.2025.57.6.7

Gang Tian, Cong Yang, Yihang Tian, Zihuan Wang, Yannan Dang

831-843
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10.5614/j.eng.technol.sci.2025.57.6.7
Sustainable thermal insulation of geopolymer blocks using solid waste: palm oil ash and palm oil clinker

DOI: https://doi.org/10.5614/j.eng.technol.sci.2025.57.6.8

Abideng Hawa, Preecha Salaemae

844-858
- Abstract
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10.5614/j.eng.technol.sci.2025.57.6.8
The Initial Development of Integrated Add-On Tele-Ultrasonography for Monitoring the Health of Pregnant Women and Fetuses in the Community Health Centers in Indonesia -

DOI: https://doi.org/10.5614/j.eng.technol.sci.2025.57.6.9

Hesty Susanti, Suto Setiyadi, Dita Puspitasari, Fenty Alia, Muhammad Rizqi Syah Ramadhan

859-874
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10.5614/j.eng.technol.sci.2025.57.6.9
Sensitive Detection of Rhodamine B Using Surface Enhanced Raman Spectroscopy with a BiFeO3 based Substrate

DOI: https://doi.org/10.5614/j.eng.technol.sci.2025.57.6.10

Diva Cassia Mayora, Djoko Triyono, Muhandis Shiddiq, Rifqi Almusawi Rafsanjani, Akhmad Futukhillah Fataba Alaih

875-884
- Abstract
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10.5614/j.eng.technol.sci.2025.57.6.10