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Sustainable asphalt modification using palm oil fuel ash, garnet waste, and sawdust: performance and correlation analysis
No full textRecently, the volume and growth of industrial as well as agricultural waste have caused environmental pollution. However, this issue can be mitigated through recycling and reutilization of such waste products. Therefore, this paper evaluated the potential of palm oil fuel ash (POFA), garnet waste, and sawdust as sustainable modified asphalt binders and mixtures as a substitute strategy to encourage waste recycling in road pavement construction. POFA, garnet waste, and sawdust were blended individually with asphalt grade 60/70 with varied amounts of 0% (control), 3%, 6%, and 9%. Moreover, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray fluorescence (XRF), as well as X-ray diffraction (XRD) were utilized to analyze the microstructures of raw waste materials. The physical characteristics with regard to the modified asphalt binder were determined by employing softening point, penetration, and viscosity tests. Consequently, the modified asphalt mixture was assessed using the Marshall stability test. Specifically, adding 6% POFA, 3% garnet waste, and 3% sawdust performs best in stability as a modified asphalt mixture. The correlation of stability, flow, bulk density, and stiffness for POFA-, garnet waste-, and sawdust-modified asphalt mixture was significant, with a strong coefficient of determination (R2) for all Marshall stability parameters. The statistical analysis, including one-way ANOVA and Tukey’s HSD test, revealed that the percentage levels of 0%, 3%, and 6% exhibited significant differences in stability and stiffness, highlighting the optimal modification levels for enhanced mechanical performance. These findings highlight the potential of POFA, garnet, and sawdust as effective alternative additives as asphalt modifiers, contributing to sustainable road construction by promoting the use of industrial and agricultural waste materials, reducing environmental impact, and enhancing pavement performance
Evaluating the usability and performance of e-commerce database transaction systems under real-time stress using McCall’s quality model
Full text linkE-commerce depends on database transaction systems to handle large numbers of user interactions and transactions effectively and securely. In the current literature, numerous investigations have sought to determine the usability of the systems based on McCall’s Quality Model; however, assessing system performance under real-time stress situations has not been explored much. This builds on previous research regarding adding stress testing to identify how usability, as well as performance, is impacted in heavy traffic. The present work employs an improved evaluation framework and encompasses major platforms like Shopee, Lazada, Amazon, and Flipkart and major factors, including Efficiency, Reliability, and Integrity. Implications of the study will help in designing strategies for increasing system reliability and transaction continuity and developing strategies to increase user satisfaction in present day scalable online trading environments
DEWBoard rangkul Anugerah Best of the Best CITREX 2025: Ciptaan inovatif tingkat kualiti pengajaran Digital Electronics
Full text linkGAMBANG, 23 Jun 2025 – Kecemerlangan penyelidikan dan inovasi warga Universiti Malaysia Pahang Al-Sultan Abdullah (UMPSA) terus mendapat pengiktirafan apabila satu lagi hasil inovasi pensyarahnya berjaya mencipta sejarah tersendiri dalam Creative, Innovation, Technology and Research Exposition (CITREX) 2025.
Produk yang dinamakan DEWBoard©, hasil ciptaan pensyarah Fakulti Teknologi Kejuruteraan Elektrik dan Elektronik (FTKEE), Nurul Wahidah Arshad telah dinobatkan sebagai pemenang utama kategori staf melalui Anugerah Best of the Best CITREX 2025, mengatasi ratusan produk lain yang dipertandingkan
Rheological properties and rutting performance of waste incorporated hybrid asphalt binders
Full text linkIntense efforts have been focused on formulating excellent asphalt mixtures to achieve desirable properties in line with the growing numbers of traffic loads and harsh environmental factors. Nevertheless, the complex rheological behaviour of modified asphalt binders makes it challenging to predict their consistent performance, especially when incorporated with waste materials. In view of the promising use of valuable waste materials in asphalt mixtures, this study examined the rheological characteristics and rutting performance of hybrid asphalt binders incorporated with Palm Oil Fuel Ash (POFA), garnet waste, and sawdust as asphalt modifiers. A Dynamic Shear Rheometer (DSR) with frequency sweep test was used to compare the performance of individual-modified asphalt binders comprising 3% of POFA, garnet waste, and sawdust, respectively, and 0%, 3%, 6%, and 9% hybrid content combining the three waste materials in unaged hybrid asphalt binders and Rolling Thin Film Oven (RTFO) hybrid asphalt binders. The Multiple Stress Creep Recovery (MSCR) test was utilised to assess the creep and recovery properties of the asphalt mixtures, while the complex shear modulus (G*) and phase angle (δ) master curves were constructed to evaluate the viscoelastic performance of the asphalt mixtures. Comparatively, the creep recovery rate of the 6% unaged hybrid asphalt binder was substantially higher compared to its 3% and 9% unaged hybrid asphalt binder. According to the master curve analysis, the improved performance of the 6% RTFO hybrid asphalt binder is evident in the low frequency, which corresponds to the extremely high-temperature conditions. In summary, the addition of 6% hybrid content in the short-term aged RFTO hybrid asphalt binders achieved high creep recovery and high-temperature susceptibility and is considered the optimum asphalt mixture to achieve sustainable and high-performance asphalt pavements
Pelajar SMK Gudang Rasau cipta I-Bracealert inovasi cegah tidur dalam kelas menang emas dan Anugerah Khas di CITREX 2025
Full text linkGAMBANG, 19 Jun 2025 – Bagi mengatasi masalah murid yang kerap tertidur semasa sesi pembelajaran dan peperiksaan, sekumpulan penyelidik muda dari Sekolah Menengah Kebangsaan (SMK) Gudang Rasau Kuantan, Husna Aqilah Mohd Zaidi, Nurkyreen Khairil Shuhaidi dan Iris Marissa Mazman telah menghasilkan I-Bracealert yang berjaya merangkul pingat emas dan Anugerah Khas dalam pertandingan Pameran Creation, Innovation, Technology and Research Exposition (CITREX) 2025 pada 18 hingga 19 Jun 2025 di Dewan Kompleks Sukan UMPSA Kampus Gambang.
Penyelidikan itu turut mendapat bimbingan daripada cikgu SMK Gudang Rasau, Che Siti Asmah Norsusilawati Che Ahmad.
Menurut Che Siti Asmah, kajian ini bermula pada bulan Jun tahun lepas dan disiapkan sehingga ke peringkat prototaip pada bulan Jun tahun ini
UMPSA and CLSU celebrate COAR 2025 focusing on knowledge sharing in Biotechnology and Agriculture
Full text linkGAMBANG, 17 June 2025 - The Faculty of Industrial Science and Technology (FIST), Universiti Malaysia Pahang Al-Sultan Abdullah (UMPSA) has successfully organized the 5th Academic and Research Colloquium (COAR 2025) in collaboration with the College of Fisheries, Central Luzon State University (CLSU), Philippines.
This program is a continuation of the COAR colloquium series that has been taking place since 2021 as an initiative to strengthen international academic and research networks.
The opening ceremony was officiated by Dean of FIST, UMPSA, Associate Professor Dr. Aizi Nor Mazila Ramli, welcoming the presence of Vice-President, Student Affairs CLSU, Professor Dr. Ravelina R. Velasco and Acting Dean of the College of Fisheries, CLSU, Associate Professor Dr. Hazel Monica Matias-Peralta as the main co-organizer of the program
Electric vehicle battery state of charge estimation using metaheuristic-optimized CatBoost algorithms
Full text linkState of Charge (SoC) estimation plays a crucial role in battery management systems for electric vehicles, directly impacting their operational efficiency and reliability. This study presents a hybrid approach combining the CatBoost algorithm with metaheuristic optimization techniques to enhance SoC estimation accuracy and robustness. The methodology was validated using an extensive dataset collected from 72 real-world driving trips of a BMW i3 (60 Ah), comprising 1053,910 instances of battery and vehicle operation metrics. A comprehensive data preprocessing pipeline was implemented, including missing value treatment, outlier removal, and feature normalization using Min-Max scaling. Three distinct metaheuristic algorithms were investigated: Barnacles Mating Optimizer (BMO), Particle Swarm Optimization (PSO), Genetic Algorithm (GA), and Whale Optimization Algorithm (WOA), each integrated with CatBoost to optimize critical parameters including learning rate, tree depth, regularization, and bagging temperature. Experimental results demonstrate that the BMOCatBoost approach achieved superior performance with best-case metrics of RMSE = 6.1031, MAE = 4.1303, and R² = 0.8211, outperforming both PSOCatBoost, GA-CatBoost, and WOA-CatBoost implementations. The framework's effectiveness was validated through rigorous testing, establishing its potential for real-world electric vehicle applications. This research contributes to the advancement of battery management technology, offering promising implications for electric vehicle energy management and broader energy storage applications
UMPSA expands TVET education outreach, strengthens student leadership
Full text linkGAMBANG, 19 June 2025 – Universiti Malaysia Pahang Al-Sultan Abdullah (UMPSA) once again takes a step forward to strengthen the national Technical and Vocational Education and Training (TVET) Agenda by organising the UMPSA Open Day 2025 in conjunction with the National TVET Day Celebration, which took place for two days from 18 to 19 June 2025 at the Sports Complex Hall, UMPSA Gambang Campus.
The ceremony was officiated by the Chief Minister of Pahang, Yang Berhormat Dat’ Sri Diraja Haji Wan Rosdy bin Wan Ismail, represented by the Chairman of the Pahang State Committee on Agriculture, Agro-Based Industry, Biotechnology and Education, Yang Berhormat Dato’ Sri Ir. Haji Mohd Soffi Tan Sri Abd Razak
Enhancing the curing efficiency and physicochemical properties of acrylated epoxidized palm oil polyurethane coatings via double acrylation-thiol modification
Full text linkThe slow curing and suboptimal properties of epoxidized palm oil polyurethane acrylate (EPOUA) coatings remain significant challenges that limit their performance. This study enhances these coatings by applying acrylation-thiol (AT) modification onto the EPOUA coatings provided double acrylation-thiol effect to the EPOUA. EPOUA and AT were first synthesized separately, then the AT was blended at concentrations of 2, 4, 6, and 8 parts per hundred resin (phr) EPOUA. The blended mixture was then cast onto a silicone mold with a thickness of 1 mm and cured using ultraviolet (UV) radiation. The results show that 2 and 4 phr AT significantly improved curing, reducing time by 15 and 30 s, respectively. Crosslinking density also increased, with gel content rising by 6% and 9% at 2 and 4 phr AT, respectively, while maintaining low volatile organic compound (VOC) emissions (< 5%). Physical properties improved, with hardness increasing threefold at 2 phr AT and fourfold at 4 phr AT on glass, plywood, and steel. Adhesion remained excellent (5B rating) on plywood, steel, and aluminum. However, higher AT concentrations (6 and 8 phr) resulted in inconsistent curing and increased VOC emissions. These findings indicate that 4 phr AT optimally improves EPOUA coatings’ curing efficiency, crosslinking, and mechanical properties while maintaining environmental compliance
Effects of canning temperature and period on the proximate composition of oyster mushrooms (Pleurotus ostreatus) and the functional properties of its brine
Full text linkCanning is a method for preserving perishable items, including edible mushrooms. However, the high temperatures applied during canning result in nutritional degradation and leaching into the brine. This study measured the proximate composition of oyster mushrooms after canning at three different temperatures (116, 121, and 126 °C) and periods (25, 30, and 35 minutes). Foaming capacity, foaming stability, and emulsion capacity tests were performed to establish the brine’s functional qualities, while the SDS-PAGE technique was used to identify the molecular weight of the proteins. The results demonstrated that the canning temperature and period significantly reduced the protein and fat levels of oyster mushrooms (p 30 minutes of the canning process exhibited improved foam formation (60 - 83 %) and the greatest stability (p < 0.05). Gel electrophoresis revealed that the proteins in the brine solution had a molecular weight of less than 120 kDa. Thus, the nutritional composition of oyster mushrooms was significantly influenced by the temperature and period of the canning process. The formation of stable aerated bubbles also demonstrated the efficacy of the brine in preserving the mushrooms despite some nutrient loss