Journal of Engineering and Technological Sciences welcomes full research articles in: General Engineering, Earth-Surface Processes, Materials Science, Environmental Science, Mechanical Engineering, Chemical Engineering, Civil and Structural Engineering.

CiteScore 2025: 2.4

SJR 2025: 0.274

SNIP 2025: 0.538

Q2 Earth-Surface Processes


In Progress

Vol. 58 No. 6 (2026): Vol. 58 No. 6(2026): December (In Progress)
Published: 2026-09-25

Articles

  • Combustion Characteristics of High Concentration Ammonia/Ethanol Blends under Varied Boost Pressures in a Spark-assisted Compression Ignition Engine with a Sub-chamber

    DOI : 10.5614/j.eng.technol.sci.2026.58.6.1
    Takanobu Okada (1), Mitsuhisa Ichiyanagi (2), Emir Yilmaz (3), Rizal Mahmud (4), Christian Dennis Marcelo (5), Ferdinand Ronaldo Tjiotijono (6), Evan Widjaja (7), Jason Sutedjo (8), Gabriel Jeremy Gotama (9), Willyanto Anggono (10), Takashi Suzuki (11)
    (1) Graduate School of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan ,
    (2) Department of Engineering and Applied Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan ,
    (3) Department of Engineering and Applied Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan ,
    (4) Department of Engineering and Applied Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan ,
    (5) Graduate School of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan ,
    (6) Graduate School of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan ,
    (7) Mechanical Engineering Department, Faculty of Industrial Technology, Petra Christian University, Jalan Siwalankerto 121-131, Surabaya 60236, , Indonesia ,
    (8) Mechanical Engineering Department, Faculty of Industrial Technology, Petra Christian University, Jalan Siwalankerto 121-131, Surabaya 60236, , Indonesia ,
    (9) Mechanical Engineering Department, Faculty of Industrial Technology, Petra Christian University, Jalan Siwalankerto 121-131, Surabaya 60236, , Indonesia ,
    (10) Mechanical Engineering Department, Faculty of Industrial Technology, Petra Christian University, Jalan Siwalankerto 121-131, Surabaya 60236, , Indonesia ,
    (11) Department of Engineering and Applied Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan
    745-761
    Abstract : 31
    PDF : 10
    DOI: https://doi.org/10.5614/j.eng.technol.sci.2026.58.6.1

  • Impact of Multi-Walled Carbon Nano Tubes in Diesel Engine Combustion with Hydrogen as Supplementary Fuel

    DOI : 10.5614/j.eng.technol.sci.2026.58.6.2
    Konkala Balashowry (1), Putha Prasad Kumar (2), Motukuri Subrahmanya Srinivasa Rao (3), Hazari Naresh (4), Nimmagadda Srilatha (5)
    (1) Department of Mechanical Engineering, VNR Vignana Jyothi Institute of Engineering and Technology, Bachupally, Hyderabad, 500118, India ,
    (2) Department of Mechanical Engineering, VNR Vignana Jyothi Institute of Engineering and Technology, Bachupally, Hyderabad, 500118, India ,
    (3) Department of Mechanical Engineering, VNR Vignana Jyothi Institute of Engineering and Technology, Bachupally, Hyderabad, 500118, India ,
    (4) Department of Mechanical Engineering, VNR Vignana Jyothi Institute of Engineering and Technology, Bachupally, Hyderabad, 500118, India ,
    (5) Department of Mechanical Engineering, VNR Vignana Jyothi Institute of Engineering and Technology, Bachupally, Hyderabad, 500118, India
    762-780
    Abstract : 16
    PDF : 7
    DOI: https://doi.org/10.5614/j.eng.technol.sci.2026.58.6.2

  • A Comparative Study of Carbon Surface Modification Routes: Gamma Irradiation and Aqueous Oxidation using H2O2 for Advanced Carbon/MnO2 Nanocomposite Supercapacitor Electrode

    DOI : 10.5614/j.eng.technol.sci.2026.58.6.3
    Kyla Amalia Gala (1), Chaidir Pratama (2), Imam Prasetyo (3), Teguh Ariyanto (4)
    (1) Department of Chemical Engineering, Faculty of Engineering, Universitas Gadjah Mada, Jalan Grafika No. 2, Yogyakarta 55281, Indonesia ,
    (2) Research Center for Radioisotope, Radiopharmaceutical, and Biodosimetry Technology, National Research and Innovation Agency (BRIN), KST BJ Habibie, South Tangerang 15314, Indonesia ,
    (3) Department of Chemical Engineering, Faculty of Engineering, Universitas Gadjah Mada, Jalan Grafika No. 2, Yogyakarta 55281, Indonesia ,
    (4) Department of Chemical Engineering, Faculty of Engineering, Universitas Gadjah Mada, Jalan Grafika No. 2, Yogyakarta 55281, Indonesia
    781-797
    Abstract : 12
    PDF : 5
    DOI: https://doi.org/10.5614/j.eng.technol.sci.2026.58.6.3

  • Fabricating Self-Assembled Porous Silica for Microplastic Adsorption in Electrolyzed Drinking Water

    DOI : 10.5614/j.eng.technol.sci.2026.58.6.4
    Mellia Harumi (1), Eleonora Adesti Reswara Putribian (2), Benedictus Amadeo Emanuel (3), Inneke Hantoro (4), Bernadeta Soedarini (5), Gelbert Jethro Sanyoto (6)
    (1) Faculty of Agricultural Technology, Soegijapranata Catholic University, Jalan Rm. Hadisoebeno Sosro Wardoyo, Semarang 50215, Indonesia ,
    (2) Faculty of Agricultural Technology, Soegijapranata Catholic University, Jalan Rm. Hadisoebeno Sosro Wardoyo, Semarang 50215, Indonesia ,
    (3) Faculty of Agricultural Technology, Soegijapranata Catholic University, Jalan Rm. Hadisoebeno Sosro Wardoyo, Semarang 50215, Indonesia ,
    (4) Faculty of Agricultural Technology, Soegijapranata Catholic University, Jalan Rm. Hadisoebeno Sosro Wardoyo, Semarang 50215, Indonesia ,
    (5) Faculty of Agricultural Technology, Soegijapranata Catholic University, Jalan Rm. Hadisoebeno Sosro Wardoyo, Semarang 50215, Indonesia ,
    (6) Faculty of Agricultural Technology, Soegijapranata Catholic University, Jalan Rm. Hadisoebeno Sosro Wardoyo, Semarang 50215, Indonesia
    798-811
    Abstract : 20
    PDF : 7
    DOI: https://doi.org/10.5614/j.eng.technol.sci.2026.58.6.4

  • Topology Optimization: A Compact Review and Comparation on Level Set Technique Development in Single and Multi-material

    DOI : 10.5614/j.eng.technol.sci.2026.58.6.5
    Loc Tan Le (1), Annisa Jusuf (2), Lavi Rizki Zuhal (3), Tatacipta Dirgantara (4)
    (1) Faculty of Aeronautical Engineering, Vietnam Aviation Academy, 104 Nguyen Van Troi Street, Phu Nhuan Ward, Ho Chi Minh City 700000, Viet Nam ,
    (2) Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jalan Ganesa No. 10, Lebak Siliwangi, Kecamatan Coblong, Kota Bandung, Jawa Barat 40132, , Indonesia ,
    (3) Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jalan Ganesa No. 10, Lebak Siliwangi, Kecamatan Coblong, Kota Bandung, Jawa Barat 40132, , Indonesia ,
    (4) Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jalan Ganesa No. 10, Lebak Siliwangi, Kecamatan Coblong, Kota Bandung, Jawa Barat 40132, , Indonesia
    812-835
    Abstract : 21
    PDF : 3
    DOI: https://doi.org/10.5614/j.eng.technol.sci.2026.58.6.5
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