Vol 21, No 1 (2025)

June 2025

DOI: http://dx.doi.org/10.62870/tjst.v21i1

Table of Contents

Article

Study of air pollution from vehicle emissions at R.T.A. Milono – Willem A. S. intersections Palangka Raya City
Ari Widya Permana, Gusti Iqbal Tawaqal
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1-11
Development of self-polishing antifouling paint with cerium oxide nanoparticle additives
Bening Kambuna, Yanyan Dwiyanti, Arini Nikitasari, Muhammad Imam Prasetyo, Aditya Rahman
PDF
12-23
Designing IT Governance for SME digital transformation based on COBIT 2019 SME focus area
Mega Ayu Natalia, Rahmat Mulyana, Ridha Hanafi
PDF
24-40
Prototype system for turbidity and TDS measurement of refill drinking water using Arduino microcontroller
Irma Saraswati, Ganda Himawan, Romi Wiryadinata, Ahmad Ramadhani, Heri Haryanto, Nauval Franata, Muchtar Ali Setyo Yudono, Ratu Verlaili Erlindriyani
PDF
41-52
Effect of current, time, concentration of tin (II) chloride, and temperature on making tin powder using the electrodeposition
Riska Oktanova, Soesaptri Oediyani, Anistasia Milandia, Rudi Subagja
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53-64
Exploration of a mixture of HMR (high moisture resistant) and HDPE (high-density polyethylene) as an environmentally friendly furniture board alternative
Ancilla Domini Kusbijanto, Terbit Setya Pambudi, Hanif Azhar
PDF
65-78
Epoxy/unsaturated polyester blends via post-curing process for marine applications
Fahriadi Pakaya, Yurika Nantan, Marinus S. Tappy, Raman GTH Simanjuntak, Jozua Ch. Huwae, M. Yusuf Syam, Izhary Siregar, I Nyoman Subawa, Wilfred Yan Krol Urun
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79-90
Characteristics of biodegradable plastic from cellulose fiber of rice straw (Oryza sativa L.) with glycerol as a plasticizer
Sahasika Sean Putra, Ariki Zainulmuttaqin, Gavin Viryateja, Triastuti Rahayu
PDF
91-101
Thermal effectiveness comparison analysis on air-based PV/T system with varying top-to-bottom cavity ratios using CFD simulation
Nabil Putra Wahyu Yanuariska, Nia Nuraeni Suryaman, Ahmad Rajani
XML
102-115
Balancing strength and porosity: A critical evaluation of cement substitution with metakaolin in porous concrete
Auliya Rahmadillah, Bimo Brata Adhitya, Fitria Putri Lintang Sari
PDF
116-126
Efficiency of phosphate concentration reduction in laundry wastewater using the electrocoagulation method
Dhara Yuniar, Agung Sugiharto
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127-134
Redesign the user interface (UI) and user experience (UX) for websites using the design thinking method
Khairul Muttaqin, Nurul Fadillah, Rani Khairani
PDF
135-147