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UPSI Digital Repository (UDRep)
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| Total records found : 6488 |
| 1 | 2025 Article | Utilization of differentiated learning modules with blended and scaffold-based instruction in Mathematics education Santillan, Jesus Parena This study aimed to evaluate the developed intervention-learning materials (Phase 1) that support distance teaching and learning in the Philippines. Specifically, the study focused on the utilization (Phase 2) of the developed Differentiated Math Learning Materials (DMLMs) to enhance academic performance and achievements in Mathematics 8: Linear Inequalities in Two Variables. The study employed a mixed-method approach and utilized the DMLMs on grade-8 students of a far-flung secondary school in the Department of Education in the Philippines. The results indicate a significant positive impact on the academic performance and achievements of students in the least mastered contents of Mathematics 8. The intervention learning materials designed for slow-paced and average-paced learners were found to be effective during the implementation of blended and remote learning education. The study's contribution to the field of distance learning education highlights the importance of developing and ..... 7 hits |
| 2 | 2025 Article | Usability of WebMath-Kit as an educational platform for the topic Network in Graph Theory among grade 11 pupils in South Malaysia Annie Gorgey The primary aim of WebMath-Kit is to address the challenges pupils face in understanding complex mathematical concepts by providing interactive, engaging, and visually appealing learning materials for the topic Network in Graph Theory. The platform includes components such as a learning kit, assessments, and a chatbot to facilitate comprehensive learning experiences. To evaluate its usability and effectiveness, a sample consists of 39 Grade 11 pupils were chosen in one of the high schools located in South Malaysia. Results indicated high reliability and validity, with Cronbach's Alpha _= 0.95 demonstrating strong internal consistency. About 92% strongly agree that usability of the WebMath-Kit as a teaching and learning platform and the average mean score across all items is 3.926, with an average standard deviation of 0.176. Usability assessments revealed that pupils found the platform user-friendly, engaging, and helpful in enhancing their understanding of Network in Graph Theory. The..... 2 hits |
| 3 | 2025 Article | Mathematics achievement: examining the interplay of student factors in senior secondary school Asanre, Akorede Ayoola This study investigated the relationship between student traits (attitude, interest and self-efficacy) and Mathematics achievement in senior secondary schools in Ijebu-Ode, Ogun State, Nigeria. Three hypotheses guided the study. A quantitative approach was used while the research design employed was the descriptive survey. A sample size of 350 students was randomly selected. Two research instruments were used, yielding the reliability coefficient of 0.883 for Students_ Attitude, Interest and Self-Efficacy Scale (SAISS) and 0.861 for Mathematics Achievement Test (MAT). Percentage and Analysis of variance (ANOVA) were used to analyze the data. Results showed a substantial relationship between student factors and senior secondary school mathematics achievement with the following results (F = 26.746, p.. 2 hits |
| 4 | 2025 Article | Hydrometallurgical Synthesis of pure zincite (ZnO) powder from dead zinc carbon batteries for use in the manufacturing of antimicrobial products Ayinla, Kuranga Ibrahim The conversion of waste materials in our environment into useable chemical products is a popular issue these days. Here, we report on the production of zincite powder using a very simple hydrometallurgical method. Within two hours, 92.23% of the original 10 g/L SZCB reacted at ideal leaching conditions (2.5 mol/L HCl, 80_C). The result predicted the diffusion model as rate determining step, with calculated Ea of 28.53 kJ/mol. The precipitated hydroxide was calcined to produce pure zincite powder of yield 85.2%. Analyses using X-ray diffraction (XRD) and scanning electron microscopy (SEM) revealed that the high purity ZnO existed as a flower-like spherical aggregation and antimicrobial testing was later carried out to be reported in part B of the research.
Keywords: Hydrometallurgy, Kinetics, Metallurgy, Powder Technology, X-ray, Zincite.. 2 hits |
| 5 | 2025 Article | Examining the thermal dynamics of coffee cups: evaluating the impact of cup material on thermal characteristics via numerical simulations Emmanuel, Sabastine This work examines the thermal diffusivity properties of four different materials, ceramic, stainless steel, plastic, and glass, using the one-dimensional heat equation's Initial Boundary Value Problem (IBVP) framework. We investigate the transient thermal behaviour of these materials using numerical techniques like the Crank-Nicolson method and the explicit FTCS (Forward-Time Central-Space) method. We perform simulations and analyse heat transfer dynamics and temperature distributions using Python implementations with uniform step sizes. According to our research, there are notable differences in the thermal diffusivity performance of the materials, with stainless steel showing better conductive qualities. Furthermore, a look at the midpoint temperature profiles of the cups provides information on the thermal and temporal dynamics. A comparison of the Crank-Nicolson and FTCS approaches shows how effective the latter is in producing precise and stable solutions. The study contributes t..... 3 hits |
| 6 | 2025 Article | Evolution of functional membranes: a bibliometric approach on the modification from polymeric to nanocomposite systems Febriani Membrane science has become a study that has received significant attention for its use in membrane filtration. The development of membrane science has accelerated with the use of nanotechnology. Various studies on the use of membranes in water treatment filtration have been conducted, but many focus on single materials and separation effectiveness. However, research presenting developments in membrane technology that focus on the shift from the polymeric era to nanocomposites has not been presented. This gap led this study to map the evolution of membrane science as a direction for future research. A total of 13,983 documents obtained from Scopus were analyzed. Open Refine and Microsoft Excel were used for metadata cleaning, while VOSviewer and IIPmaps were used for data visualization. The analysis was conducted to obtain data on the development and distribution of publications, trending keywords, research transitions, and future research directions. The results show that publications..... 2 hits |
| 7 | 2025 Article | Essential oils composition of vitex negundo and vitex trifolia and its anatomical study Fakhira Liyana Mohd Zaki Chemical compositions of V. negundo and V. trifolia essential oils and their anatomical study were determined. The GC-FID and GC_MS analysis of essential oils resulted in the identification of 14 and 18 components were identified from the leaf oils of V. negundo (92.8%) and V. trifolia (91.5%), respectively. The results revealed that the essential oils are made up principally of _-elemene (43.1%), spathulenol (9.8%) for V. negundo, while viridiflorol (42.3%) and _-caryophyllene (21.7%) for V. trifolia. Meanwhile, for anatomical part, the oil gland has been found in the lamina, midrib and petiole of all essential oils.
Keywords: Verbenaceae, Vitex negundo, Vitec trifolia, essential oil, _-elemene, viridiflorol, anatomy.. 8 hits |
| 8 | 2025 Article | Development and evaluation of ubod cocos nucifera balls as plant-based meatball alternatives Catubig, Raymund The consumption of meat has long been associated with various health and environmental concerns, prompting the exploration of alternative protein sources. The study aimed to formulate a plant-based ball using the heart of the coconut palm (ubod) as an alternative to meat. A quantitative research method and quasi-experimental research design were used in this study. The research environment was one of the state universities in Cebu City, Philippines with 38 respondents. The Sensory Evaluation Form and Hedonic Rating Scale were used as an instrument for data gathering. Among the four treatments, treatment 3 was chosen to undergo microbial analysis with the best measurement of 70% ubod and 30% flour. Thus, the results of the microbial analysis of the product were within the safe limit and safe for consumption. Four treatments of ubod ball were prepared and the results showed that the treatment 2 and treatment 3 ubod balls are acceptable and do not have significant differences in terms of ..... 7 hits |
| 9 | 2025 Article | Density functional theory of graphene and its hybrid materials: a review of recent advances and applications Rika N Safitri Graphene has attracted the attention of researchers as it shows exceptional electrical, mechanical, and thermal properties that are beneficial for various applications, including flexible sensors and supercapacitors. Therefore, much laboratory work was conducted to study further potential application of graphene. However, complex procedures and waste consideration are other challenges for developing graphene-based-application devices. Therefore, using a density functional theory (DFT) to intensively study graphene and its potential to be combined with various materials, resulting in a lower-cost and more efficient approach. This review provides a comprehensive overview of the fundamental theory in DFT, followed by graphene and its hybrids in computational work. Hybridizing graphene with other nanomaterials significantly modifies its bandgap and density of state, which are potential for sensing and electronic devices. Moreover, an in-depth analysis of open-source and commercial software..... 8 hits |
| 10 | 2025 Article | Challenges and future prospects of agricultural waste reinforced metal matrix nanocomposites: a review Hamalai, Rebecca Samaila The use of agricultural waste as reinforcement in metal matrix nanocomposites presents a promising avenue for sustainable materials development. The incorporation of agricultural waste materials in metal matrixes can enhance the mechanical properties and potentially reduce the environmental impact of composites. However, this approach also faces significant challenges, such as compatibility issues, interfacial bonding, dispersion, and processing techniques. This paper critically reviews the current state of research on agricultural waste-reinforced metal matrix nanocomposites, identifies key challenges, and proposes future perspectives to overcome these obstacles and unlock the full potential of these materials.
Keywords: Agricultural waste, metal matrix composites, sustainability, interfacial bonding, dispersion, processing techniques... 7 hits |
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