Research Articles – Asia-Pacific Journal of Science and Technology (APST)

Vol. 31 No. 04 (2026): JUL-AUG

Exploration of Patchouli (Pogostemon cablin Benth.) Indigenous Rhizosphere Bacteria as Biofertilizer Candidates in Dissolving Phosphate and Producing Growth Regulator

Arlinda P Sari Universitas Sulawesi Barat, Faculty of Mathematics and Natural Sciences, Department of Biotechnology, Prof. Baharuddin Lopa Street, 91413, Majene, Indonesia. Asia Arifin Universitas Sulawesi Barat, Faculty of Agriculture and Forestry, Department of Agroecotechnology, Prof. Baharuddin Lopa Street, 91413, Majene, Indonesia. Baso Manguntungi Universitas Sulawesi Barat, Faculty of Mathematics and Natural Sciences, Department of […]

Vol. 31 No. 04 (2026): JUL-AUG

Enhancing Growth and Bioactive Compound Contents in Brahmi (Bacopa monnieri (L.) Wettst.) Irrigated with Canteen Wastewater

Jirarat Thipnang Department of Environmental Science and Natural Resources, Faculty of Interdisciplinary Studies, Khon Kaen University. Nong Khai Campus, 112 Nong Kom Ko, Muang Nong Khai, Nong Khai 43000, Thailand. Nipaporn Taweejun Department of Science Technology and Business Enterprise, Faculty of Interdisciplinary Studies, Khon Kaen University. Nong Khai Campus, 112 Nong Kom Ko, Muang Nong […]

Vol. 31 No. 04 (2026): JUL-AUG

Enhancing Germination and Early Growth of Millets (Sorghum bicolor L. and Pennisetum glaucum L.) Using Plasma-Activated Water

Punit Kumar Department of Physics, University of Lucknow, Lucknow – 226007, India Abhisek Kumar Singh Department of Physics, G L Bajaj Group of Institutions, Mathura – 281406, India DOI: https://doi.org/10.22299/apst.2026.286782 Keywords: Non – thermal plasma Plasma agronomy RONS mediated effects Germination kinetics Seedling vigor index Nitrogen enrichment Stress-resilient crops Sustainable crop enhancement Abstract The application […]

Vol. 31 No. 04 (2026): JUL-AUG

Rice straw decomposition as a source of nutrients and bacteria with potential antagonistic traits: Insights from two localities in Iloilo, Philippines

Rejie Tamondez Department of Biology, College of Arts, Sciences, and Education, University of San Agustin, Iloilo City, Philippines Yara Aghayar Department of Biology, College of Arts, Sciences, and Education, University of San Agustin, Iloilo City, Philippines Ariane Rose Sinco Department of Biology, College of Arts, Sciences, and Education, University of San Agustin, Iloilo City, Philippines […]

Vol. 31 No. 04 (2026): JUL-AUG

Age-Dependent Bromelain Enzyme Activity in Pineapple Rhizomes (“Smooth Cayenne” cultivar) Predicted by Fourier-Transform Near-Infrared Spectroscopy

Kannapot Kaewsorn Department of Mechanical Engineering, School of Engineering and Innovation, Rajamangala University of Technology Tawan-Ok, Chon Buri, 20110, Thailand Manoch Ratanacoon Department of Products for Health and Beauty, Faculty of Science and Technology, Rajamangala University of Technology Tawan-ok, Chon Buri, 20110, Thailand Jantarat Meksophon Department of Mechanical Engineering, School of Engineering and Innovation, Rajamangala […]

Vol. 31 No. 04 (2026): JUL-AUG

Deep Learning and Error Correction Code-Based Robust Watermark Extraction from DWT–Chaotic Embedding

Jantana Panyavaraporn Department of Electrical Engineering, Faculty of Engineering, Burapha University, Chonburi, 20231, Thailand. Paramate Horkaew School of Computer Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand. DOI: https://doi.org/10.22299/apst.2026.284533 Keywords: Convolutional neural network Chaotic map Error correction code Watermark Abstract A blind digital watermarking framework based on Discrete Wavelet Transform (DWT) is proposed for secure […]

Vol. 31 No. 04 (2026): JUL-AUG

Injectability and mechanical properties of borneol-based solvent removal-induced in situ matrix for periodontal pocket delivery

Nutdanai Lertsuphotvanit Faculty of Pharmaceutical Sciences, Burapha University, Chonburi 20131, Thailand. Siraprapa Chansatidkosol Faculty of Pharmaceutical Sciences, Burapha University, Chonburi 20131, Thailand.https://orcid.org/0009-0008-9465-5716 Tiraniti Chuenbarn Faculty of Pharmaceutical Sciences, Burapha University, Chonburi 20131, Thailand.https://orcid.org/0000-0003-4181-4433 Thawatchai Phaechamud Department of Industrial Pharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailandhttps://orcid.org/0000-0002-8851-8386 DOI: https://doi.org/10.22299/apst.2026.280999 Keywords: Borneol Injection feasibility Mechanical […]

Vol. 31 No. 04 (2026): JUL-AUG

Low-cost portable photometer using wi-fi–enabled microcontroller and silicon photodiode for iron and phosphorus determination

Miki Kanna Department of Chemistry, Faculty of Science and Technology, Chiang Mai Rajabhat University, Chiang Mai 50180, Thailand. Watcharin Permwong Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand. Sarawut Somnam Department of Chemistry, Faculty of Science and Technology, Chiang Mai Rajabhat University, Chiang Mai 50180, Thailand. DOI: https://doi.org/10.22299/apst.2026.286024 Keywords: BPW34 […]

Vol. 31 No. 04 (2026): JUL-AUG

Interpretable Machine Learning for Mental Workload Detection: From Binary to Multi-Class with Multimodal Physiology Signals

Ade Hendi Department of Informatics Engineering, Universitas Qomaruddin, Gresik, Indonesia, 61152 Auditya P. Sutarto Department of Industrial Engineering, Universitas Qomaruddin, Gresik,Indonesia, 61152https://orcid.org/0000-0003-0298-4165 Mega B. Herlambang Department of Industrial Engineering, Institut Teknologi Indonesia, Tangerang Selatan, Indonesia, 15314 Nailul Izzah Department of Industrial Engineering, Universitas Qomaruddin, Gresik,Indonesia, 61152 DOI: https://doi.org/10.22299/apst.2026.286080 Keywords: electrodermal activity heart rate variability human-machine […]

Vol. 31 No. 04 (2026): JUL-AUG

Effect of alkali surface treatments on mechanical and morphology of natural galangal fibers

Sukanya Petchsirivej Physical Department, Faculty of Science and Technology, Huachiew Chalermprakiet University, Thailand Pornsiri Wanarattikan Physical Department, Faculty of Science and Technology, Huachiew Chalermprakiet University, Thailand Noppamas Akarachantachote Computing Science and Digital Technology Department, Faculty of Science and Technology, Huachiew Chalermprakiet University, Thailand DOI: https://doi.org/10.22299/apst.2026.285957 Keywords: Alkali-Treatment Elongation at break Galanga fiber Surface roughness Tensile […]