Browsing by Author "PSNZ"
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Item Advanced Technologies for Sustainable Aquaculture(Universiti Malaysia Terengganu, 2022-06-27) PSNZItem The Application of Pyrolysis in Achieving UNs Sustainable Development Goals(Universiti Malaysia Terengganu, 2022-01-27) PSNZItem Aquaculture Wastewater(Universiti Malaysia Terengganu, 2023-05-24) PSNZItem AUTOMATED CONTAINER TERMINAL AND MARITIME CONSTRUCTION RISK(Universiti Malaysia Terengganu, 2023-09-25) PSNZItem AUTOMATED SOLAR AND ELECTRIC COMPOST BINS FOR THE TOURISM AND FOOD & BEVERAGE (HOTEL) INDUSTRIES(UNIVERSITI MALAYSIA TERENGGANU, 2025-01) PSNZItem Biological Security and Sustainability(Universiti Malaysia Terengganu, 2022-07-27) PSNZItem Black Soldier Larvae Meal(Universiti Malaysia Terengganu, 2023-01-26) PSNZItem Circular Economy and Blue Economy Initiative(Universiti Malaysia Terengganu, 2023-03-27) PSNZItem Climate Change Adaptation and Fisheries(Universiti Malaysia Terengganu, 2022-02-27) PSNZItem Climate Change And Sea Turtle Nesting(Universiti Malaysia Terengganu, 2024-01) PSNZItem The common european framework of reference dissemination in english language education(Universiti Malaysia Terengganu, 2024-04-28) PSNZItem COMPARATIVE ANALYSIS OF WASTE COOKING OIL BIODIESEL MIXED WITH NANOPARTICLE ADDITIVES ON PHYSICOCHEMICAL PROPERTIES AND DIESEL ENGINE PERFORMANCE(UNIVERSITI MALAYSIA TERENGGANU, 2025-09) PSNZThe hazardous effect of the pollution of fossil fuels has brought the necessity of shifting conventional energy sources to renewable and clean ones. In this study, the effect of hydrogen addition and CeO2 nanoparticle addition in waste cooking palm biodiesel on a CRDI engine is evaluated. The dosage of the nanoparticle is fixed at 75 ppm and a hydrogen flow rate of 10 L/min is selected for the engine operations. The crystalline structure of the nanoparticles is determined by XRD analysis. Results showed that on the addition of both H2 and CeO2 in a B20 biodiesel blend (80% diesel and 20% biodiesel) the performance, emission, and combustion parameters of the diesel engine improved compared to neat diesel. The brake thermal efficiency was improved by 3.53% and brake fuel consumption was reduced by 16.12% in comparison to diesel at 90% loading condition. The addition of both nanoparticles and hydrogen in the biodiesel blend lowered the emissions of CO by 30%, and HC and smoke by 50% and 42% respectively. However, NOx increased by 11% as compared to diesel. A 6% higher HRR values and 8% higher in-cylinder pressure were obtained while using hydrogen and CeO2 nanoparticle blended biodiesel. This blend also shows the lowest ignition delay period at full load condition which results in more engine power and efficiency. This experimental study has helped pave the way for the use of hydrogen-enriched and nanoparticle-blended biodiesel in place of fossil fuel for the applications of diesel engines.Item Compassionate Leadership(Universiti Malaysia Terengganu, 2023-10-26) PSNZItem Cruise and Digital Tourism(Universiti Malaysia Terengganu, 2023-02-26) PSNZItem Cultural Heritage(Universiti Malaysia Terengganu, 2023-06-26) PSNZItem DEVELOPMENT OF TRANSDISCIPLINARY APPROACH ON CROP HEALTH MANAGEMENT PROGRAM FOR DURIAN FARMING IN MALAYSIA(Universiti Malaysia Terengganu, 2025) PSNZItem Dive Guides and Competency Skill(Universiti Malaysia Terengganu, 2023-07-27) PSNZItem THE ECONOMIC VALUE OF CITY LANDMARK TO TOURISTS AND ITS ECONOMIC IMPACTS ON LOCAL COMMUNITIES: THE CASE OF TERENGGANU DRAWBRIDGE(UNIVERSITI MALAYSIA TERENGGANU, 2025-06-25) PSNZItem ELUCIDATING THE CALCIUM OXIDE DERIVED FROM THE WASTE SHELLS OF MUD CLAM (GELOINA EXPANSA) AS A CATALYST FOR BIODIESEL PRODUCTION ELUCIDATING THE CALCIUM OXIDE DERIVED FROM THE WASTE SHELLS OF MUD CLAM (GELOINA EXPANSA) AS A CATALYST FOR BIODIESEL PRODUCTION(UNIVERSITI MALAYSIA TERENGGANU, 2025-10) PSNZBiodiesel is one of the alternative forms of diesel fuel and can be obtained using the transesterification process of waste cooking oil with a catalyst to accelerate the reaction. The heterogeneous catalyst from waste scallop shells is used due to its potential for being reused in the subsequent transesterification reactions. Heterogeneous catalysts can also be recycled, contributing to their environmentally friendly nature. This study aims to identify the performance of recycling a calcium oxide (CaO) catalyst from scallop shell waste on synthesis biodiesel. The method used is the transesterification method with the basic ingredients of waste cooking oil using a CaO catalyst. Then, after the transesterification process is complete, the catalyst is separated from the biodiesel and recycled to be reused in the transesterification process up to five times. The biodiesel samples obtained are identified for yield value, physico-chemical properties, thermal properties and performance. X-ray diffraction characterization results for the CaO catalyst show that it has a crystal size of 67.83 nm. Scanning electron microscope characterization shows that it has spherical particle shapes. Fourier transform infrared characterization shows the presence of Ca–O bonds. The highest biodiesel yield value of 74.23% is obtained in biodiesel Cycle 1. The flash point value of biodiesel samples ranges from 141.2°C to 149°C. Further, all of the biodiesel samples exhibit a cetane number of 75. The highest lower heating value of 38.22 MJ/kg is obtained in biodiesel Cycle 1 and the viscosity of the biodiesel samples ranges from 5.65 to 5.88 cSt. The density of the biodiesel samples ranges from 881.23 to 882.92 kg/m3. Besides, ester functional groups (C=O) and methyl functional groups have been successfully formed in all samples, with the methyl oleate compound observed as dominating the biodiesel samples. The cloud point value of the biodiesel samples ranges from 12°C to 13°C, and their pour point value ranges from 10°C to 12°C. The lead content in biodiesel is 0.8826 mg/kg. The lowest sulphur content is obtained from biodiesel Cycles 1 and 2 at 0.005%. Performance tests show that biodiesel has lower torque and brake power values than commercial diesel fuel and higher specific fuel consumption values than commercial diesel fuel.Item ELUCIDATION OF ANTIBIOFILM FORMATION MECHANISMS USING MARINE EXTRACTS AGAINST INFECTION AND ANTIMICROBIAL RESISTANCE (AMR) ELUCIDATION OF ANTIBIOFILM FORMATION MECHANISMS USING MARINE EXTRACTS AGAINST INFECTION AND ANTIMICROBIAL(UNIVERSITI MALAYSIA TERENGGANU, 2025-11-24) PSNZAntimicrobial resistance (AMR) has emerged as a global health crisis, with methicillinresistant Staphylococcus aureus (MRSA) representing one of the most clinically significant multidrug-resistant pathogens. In this study, three structurally unique anthracycline derivatives—keto-ester (1), 4-deoxy-ε-pyrromycinone (2), and misamycin (3)—were first isolated and characterized from the fermentation broth of the marine-derived Streptomyces tauricus NBUD24. These compounds exhibited notable antibacterial efficacy against MRSA, with minimum inhibitory concentrations (MICs) ranging from 16 to 32 μg/mL. Cytotoxicity assays confirmed their safety profile at therapeutic concentrations. The biofilm formation assay demonstrated that 4-deoxy-ε-pyrromycinone inhibited biofilm formation of MRSA ATCC43300, with an inhibition rate of 64.4%. Investigations of antibacterial mechanisms revealed that these compounds exert antibacterial effects primarily through disruption of bacterial cell wall integrity and destruction of DNA structure. These findings underscore the potential of marine-derived microbial metabolites as promising scaffolds for developing next-generation antimicrobial candidates to combat drug-resistant infections.
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