Vol. 88 No. 3: May 2026

Science and Engineering

• DISTRIBUTION ANALYSIS OF MICRO-EARTHQUAKES IN GEOTHERMAL AREAS BY USING COUPLED VELOCITY-HYPOCENTER AND DOUBLE DIFFERENCE METHODS

  Widya Utama, Sherly Ardhya Garini, Rista Fitri Indriani

  321-331

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• SIMULATION STUDY ON THE SPRAY CHARACTERISTICS OF PALM OIL DIESEL BLEND BY USING DISCRETE PHASE MODEL

  M. A. Subri, S. N. Soid, I. A. Azid, M. H. H. Ishak

  333-342

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• INTEGRATING LIFE CYCLE ASSESSMENT AND LIFE CYCLE COSTING THROUGH CLUSTER ANALYSIS FOR ENHANCED DECISION-MAKING IN FOOD WASTE MANAGEMEN

  Rozieana Abu, Nor Ziha Mohd Musa, Zuraidah M. Taib, Muhammad Arif Ab Aziz, Muhammad Iqbal Hakim Muhammad Tahir, Rohaya Abd. Jalil, Che Hafizan Che Hassan, Zainura Zainon Noor, Muhammad Waris Ali Khan

  343-384

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• KANDUNGAN LOGAM BERAT DALAM TUMBUHAN PERISA (HALIA DAN SERAI) YANG DITANAM DALAM TANAH ULTRABES DI RANAU, SABAH, MALAYSIA HEAVY METAL CONTENT IN FLAVORING PLANTS (GINGER AND LEMONGRASS) GROWN IN ULTRABASE SOIL IN RANAU, SABAH, MALAYSIA

  Sahibin Abd Rahim, Angie Fan Yan Kai, Diana Demiyah Mohd Hamdan, Nur Zaida Zahari, Baba Musta, Khor Wei Chung

  385-393

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• FINE-TUNING DEA AMINE CONDITIONS FOR EFFICIENT CO₂ REMOVAL IN NATURAL GAS PROCESSING: A SIMULATION-BASED APPROACH

  Ayyi Husbani, Dike Fitriansyah Putra, Fitrianti Fitrianti, Mohd. Zaidi Jaafar, Jesica Caroline

  395-406

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• MULTI-OBJECTIVE OPTIMIZATION OF FDM: INTEGRATING ANN AND MOSOS-DS FOR IMPROVED MATERIAL CONSUMPTION, TENSILE STRENGTH, AND DIMENSIONAL ACCURACY

  Hani Nasuha Hadi Irazman, Mohd Sazli Saad, Mohamad Ezral Baharudin, Mohd Zakimi Zakaria, Azuwir Mohd Nor, Azlan Mohd Zain

  407-417

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• PRELIMINARY GENETICS ASSESSMENT OF OYSTER Crassostrea spp. FROM THE EAST COAST AND NORTHERN PENINSULAR MALAYSIA

  Syamim Balqis Shamsul Bahari, Rabi Atun Adawiah Abdullah, Mohamad Akib Baharom, Nik Muhammad Firdhaus, Norainy Mohd Husin

  419-427

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• DETERMINATION OF ANTIOXIDANT, NITRIC OXIDE SCAVENGING ACTIVITY, TOTAL PHENOLIC AND FLAVONOID CONTENT FROM PROPOLIS OF GENIOTRIGONA THORACICA

  Muhammad Amir Fikri MD Fauzi, Nor Atiqah Jusril, Ahmad Nazif Aziz, Khamsah Suryati Mohd

  429-438

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• UPGRADING OF EAST KALIMANTAN LIGNITE  CHARATERISTICS THROUGH INORGANIC SALT CHEMICAL ACTIVATION TREATMENT PRODUCING MICROWAVE ABSORBENT

  Marinda Rachim, Nurfatehah Wahyuny Che Jusoh, Muh. Irwan, Tata Swastika

  439-446

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• THE INFLUENCE OF HIGH CARBON DIOXIDE LEVELS IN ALL-IN-ONE MODIFIED ATMOSPHERE STORAGE ON BANANAS, PAPAYAS, AND WATERMELONS' SHELF LIFE

  Agri Suwandi, Wina Libyawati, Abid Fahreza Alphanoda, Intan Permata Sari

  447-459

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• POST-WILDFIRE ALTERATIONS IN SOIL PHYSICAL PROPERTIES OF COASTAL SANDY SOILS IN TERENGGANU, MALAYSIA

  Muhammad Norhadi Masni, Khairul Ikhwan Mohd Jamalludin, Goh Eng Giap, Mohammad Fadhli Ahmad, Rudiyanto Rudiyanto

  461-468

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• IMPROVEMENT OF THE SHELF LIFE AND NUTRITIONAL QUALITY OF FERMENTED MUSHROOMS (PEKASAM CENDAWAN) THROUGH GAMMA RADIATION AND OPTIMIZED STORAGE CONDITIONS

  Saiful Irwan Zubairi, Nor Fazila Zulkfli, Ruth Manuel, Nik Farhan Nazmi Nik Abd Rahman, Azhar Mohamad

  469-483

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• EVALUATION ANALYSIS OF METAL EPOXY COMPOSITE (MEC) MOLD INSERTS IN RAPID TOOLING FOR INJECTION MOLDING

  Radhwan Hussin, Mohd Azlan Suhaimi, Safian Sharif, Shayfull Zamree Abd Rahim, Mohd Nasir Mat Saad, Mohd Khushairi Mohd Khushairi, Tc. Narzrezal Abdul Razak

  485-497

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• EFFECT OF LATERAL AND AXIAL ECCENTRIC LOADS OF NAILED-SLAB SYSTEM

  Kusrin Kusrin, Pratikso, Abdul Rochim

  499-506

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• NON-DESTRUCTIVE ANALYSIS OF WHITE A4 OFFICE PAPERS USING ATR-FTIR SPECTROSCOPY AND CHEMOMETRIC PROCEDURES FOR FORENSIC APPLICATION

  Wan Nur Syuhaila Mat Desa, Tay Eue Kam, Dzulkiflee Ismail

  507-519

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• EFFECT OF SUPER OLEIN OIL ON ENGINE MATERIALS FOR POTENTIAL USE IN HYDROGEN INTERNAL COMBUSTION ENGINES AT ROOM TEMPERATURE

  Aiman Yahaya, Syahrullail Samion, Zulhanafi Paiman, Koleola Ojeamo

  521-528

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• BREAKDOWN OF GLUCOMANNAN ISOLATED FROM AMORPHOPHALLUS MUELLERI: OPTIMIZATION OF ENZYMATIC HYDROLYSIS CONDITIONS

  Muhammad Imran Ishak, Roshanida A. Rahman, Mohammad Nashriq Jailani, Nur Aizura Mat Alewi, Rosli Md. Illias, Nardiah Rizwana Jaafar, Kazuhito Fujiyama, Ni Nyoman Tri Puspaningsih, Mohd Faizal Ahmad Jaafar, Azura Aziz

  529-538

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• STRESS LEVEL AND COGNITIVE LOAD TEST OF HIGH SCHOOL STUDENTS BASED ON THE ANALYSIS OF CONSUMER-GRADE EEG SIGNAL AND NASA-TLX QUESTIONNAIRE

  Bekti Afre Ratri, Siti Nurul Khotimah

  539-549

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• EMPIRICAL MODEL FOR WATER PENETRATION OF SEA WATER TO PREDICT CONCRETE COVER

  Chatarina Niken, Ratna Widyawati, Mohammmad Isneini, I Gusti Komang Satria Guna Wibawa

  551-563

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• AMMONIA ADSORPTION FROM PALM OIL MILL EFFLUENT USING CARBONIZED PALM EMPTY FRUIT BUNCHES

  Nurul Izzah Adnan, Nur Syabila Husna Mohd Bakti, Mohammad Arif Budiman Pauzan, Mohd Haiqal Abd Aziz Abd Aziz, Syazwan Hanani Meriam Suhaimy Meriam Suhaimy, Siti Khadijah Hubadillah, Norfadhilatuladha Abdullah

  565-575

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• STRENGTH DEVELOPMENT OF KAOLIN CLAY STABILISED WITH PALM OIL FUEL ASH (POFA) AND CALCINED EGGSHELL (CES) BINDER

  Muhammad Amir Redzuan Mohamad Shukri, Akmal Daniel Nurhakim Azman Putera, Tuan Noor Hasanah Tuan Ismail, Mohd Latiff Ahmad, Mudzaffar Syah Kamarudin, Riffat Shaheed

  577-590

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• MANUFACTURING AND ANALYSIS OF PROSTHETIC FOOT USING COMPOSITE MATERIAL

  Ghanim Sh. Sadiq, Alaq Saad H. T. J, Saif M. Abbas, Marwa Qasim Ibraheem Ibraheem, Tabarak Basil Ismail

  591-599

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