UPSI Digital Repository (UDRep)
Start | FAQ | About
Menu Icon


Browse by: Year_icon Subject Year_icon Publisher Year_icon Year
Latest addition to the database :
24612024
Article
The effects of peer interaction towards mathematical understanding during learning activities among elementary students
Noor Aida Affida Abdul Rahman
This study investigated the effect of peer interaction on mathematical understanding during learning activities among primary school students. This study gives an overview of how peer interaction impacts student understanding of mathematics. It enlightens educators and learners on the importance of communication in the teaching and learning process, especially in mathematics. The objectives of this study are to investigate students’ peer interaction during learning activities and to study the effects of their interaction on their understanding of mathematics while completing their mathematics group tasks. This study employed the qualitative approach. Four Year 5 students, aged between 10 and 11 years old, have been selected through purposive sampling as respondents. The data collected were the recorded videos of the mathematics lessons on the selected subtopics. Based on the findings, peer interaction among the respondents significantly affects their understanding. The communication .....

383 hits

24622024
Article
Taxonomic significance of trichome ultrastructure in five genera of lamiaceae
Norhazila Hussin
The trichome of 12 species from five genera of the Lamiaceae family, comprising Petraeovitex bambusetorum, Petraeovitex membranacea, Petraeovitex wolfei, Petraeovitex scortechinii, Petraeovitex trifoliata, Peronema canescens, Congea forbesii, Congea griffithiana, Sphenodesme racemosa, Sphenodesme triflora, Sphenodesme pentandra, and Rotheca serrata was investigated under scanning electron microscope (SEM). This study aimed to assess their ultrastructure and ascertain their respective taxonomic value accordingly. Two types of glandular trichomes, specifically peltate and capitate, and three types of non-glandular trichomes, namely, multicellular uniseriate, stellate, and conical were thus observed. The stellate type of non-glandular trichome was solely found in S. pentandra among the 12 studied species, while the data further demonstrated both Congea species to reflect the multicellular uniseriate structure on the respective leaf surfaces, whereas C. forbesii depicted the longest length.....

539 hits

24632024
Article
Semi-synthesis of N-substituted mahanimbine via alkylation
Nurliana Mohd Yunos
Mahanimbine, a prenylated carbazole found primarily in the Rutaceae family, has remarkable biological features such as anticancer, antidiabetic and antioxidant. Therefore, it is intriguing to tweak the mahanimbine structure with the aim of adding extra value to their activity. Three new derivatives were semi-synthesised by N-alkylation of naturally isolated mahanimbine using alkyl bromides, yielding N-butylmahanimbine, N-(3-methylbutyl) mahanimbine, and N-benzylmahanimbine. The structures of N-alkylated mahanimbines were elucidated using different spectroscopic techniques (FTIR, GCMS, and NMR). Keywords: mahanimbine, alkylation, N-terminal, derivative, Murraya..

387 hits

24642024
Thesis
Digital inquiry-based science learning in rural primary school
Muhammad Zulfadhli Kamarudin
This study aimed to explore the management, implementation, teaching materials, and evaluation process of digital inquiry-based science learning in rural primary school. An action research approach using qualitative methods was employed, based on the circle of action and reflection framework. The participants for this study were 8 Year 4 pupils (10-11 years old) from a rural primary school in Melaka selected using purposive sampling. The study comprised three phases: (a) clarifying the initial understanding of primary pupils regarding plant growth and photosynthesis, (b) conducting two action research cycles of digital inquiry-based science learning using the BSCS 5E Instructional model, and (c) analysing the data to address the research questions. Data were collected through interviews, reflection logs, teaching verbatim, pupils’ work and document analysis. The findings of the study revealed several key points. Firstly, in managing digital inquiry-based science learning i.....

2176 hits

24652024
Article
Pharmacological Activities of the Genus Globimetula and Scurrula
Kamal Ja’afar Muhammad
This article aims to deliver updates on the pharmacological activities of Globimetula and Scurrula species and their usage as ethnomedicine worldwide. About 13 species of Globimetula and 10 species of Scurrula are spread in Africa and Asia respectively. There is a need to establish the pharmacological properties of the plant extracts and isolated compounds from these species. Research on the biological activities of Globimetula and Scurrula species showed considerable disease-related enzyme (tyrosinase) inhibition as well as antioxidant, anti-inflammatory, antimicrobial, anticonvulsant, central nervous system depressant, and cytotoxic activities. This review also affords important information for the future growth of isolated compounds from Globimetula and Scurrula species. Keywords: Loranthaceae, phytochemicals, alkaloids, triterpenes, flavonoids..

1147 hits

24662024
Article
Mining secondary metabolites of chassalia curviflora leaves using SIRIUS and high-resolution mass spectrometry data
Aina Syuhada Ammar
Chassalia curviflora Thwaites is a flowering plant from Rubiaceae family. Previous phytochemical investigations on Chassalia species led to the isolation of benzoic acid, benzoquinone derivatives, flavonoids, monoterpenoid, indole alkaloids and its essential oil composition. However, these are still scarce in terms of scientific reports on the studied species. This study was carried out to investigate the fast screening of secondary metabolites by using data-dependent acquisition (DDA) LC-MS/MS analysis of methanolic extract of the leaves of C. curviflora in positive ionization mode. The data were analysed using the computational mass spectrometry method from the molecular structure database search implemented in Sirius. This led to the discovering of 13 known secondary metabolites from distinct tandem MS data. De novo molecular formula annotation and predictions from SIRIUS suggested five major class compounds classified as coumarins, benzofuran, fatty acids, esters, and triterpenes. .....

359 hits

24672024
Thesis
Obstacles of applying e-training in the training and professional development centers in the Sultanate of Oman from the point of view of the trainers
Al Makhashni, Sulaiman Khalaf Saeed
The study aimed to identify the obstacles to the application of e-training in training centers in the Sultanate of Oman from the point of view of trainers, trainers’ assistants, and training specialists. The study employed a quantitative descriptive method, in which a questionnaire comprising 36 items across various fields of study was used, after confirming the authenticity of the performance through the consensus of 80% of the referees and validating it using the Cronbach’s alpha coefficient, this questionnaire was applied to the study sample, which consisted of 174 individuals (males N= 80 and Females N=94) in the academic year 2021-2022. The key findings of the study revealed that the degree of obstacles to the application of etraining in training centers, from the perspective of the study sample, was high, with an overall percentage of (70%). Regarding the types of obstacles, material obstacles ranked first with a percentage of (78.4%), followed by technical obsta.....

639 hits

24682024
Article
Estimating upsurge of HIV cases in Malaysia by using heun's predictor-corrector method
Emmanuel, Sabastine
The prevalence of HIV/AIDS remains a significant global health concern, including in Malaysia. In this study, a mathematical model was developed to simulate the dynamics of HIV transmission and progression within the Malaysian population. The model incorporates various factors such as population size, infection rate, progression to AIDS, recruitment, natural death, and death due to the disease. Heun's predictor-corrector method was applied to numerically solve the model equations and predict the population of susceptible individuals, infected individuals, and AIDS cases over time. Real-world data on HIV/AIDS cases in Malaysia were used to validate the model and provide accurate predictions. The results indicated a gradual decline in the number of susceptible individuals and an increase in the number of infected individuals and AIDS cases over the simulation period. These findings can contribute to a better understanding of the dynamics of HIV/AIDS transmission in Malaysia and aid in th.....

419 hits

24692024
Thesis
An investigation of heritage architectural identity formation in globalization through painting
Gharezeddin, Amjad Hani
This research project investigated the formation of the architectural heritage identity in Damascus within the context of globalization by analyzing the architectural principles of Damascus's prevailing architecture in the contemporary era. The research aims to identify the impact of globalization on the formation of heritage identity in terms of design and characteristics, influence on social lifestyle and architectural aesthetics on space and environment. The key elements in the research project consist of design and features, social lifestyle, space and environment. The main artists involved in this research are Nazem Al- Jaafari, Mamdouh Qashlan, Abdelkader Al Rayes, Fahd Khalif, Mohamed Salmi, Fadel Abbas Al-Daami, Mohamed Sabry, John Sloan and Pham Xuan Trung. Work references of art addressed the architectural heritage from several aspects, such as the elements of heritage architecture, the social lifestyle within the heritage and the relationship of the architecture of.....

1140 hits

24702023
Thesis
Exploring challenges and coping mechanisms of mental health among firefighters
Nuramalina Samar
This study aimed to explore the challenges of Malaysian firefighters, the impact of the challenges, and to understand the coping strategies. The study adopted a qualitative research method through semi-structured interviews with 23 firefighters in the central region of Malaysia, consisting of 8 supervisors and 15 subordinates. Findings suggest that two superordinate themes emerged relating to challenges, workplace challenges and personal challenges, which are aligned with the affective experience as explained through AET. The challenges impact the firefighters psychologically, which is aligned with the affective reaction as explained by the AET but further divided into mental and physiological, emotional as well as behavioural and psychosocial impacts. The findings also suggest the coping strategies were derived based on emotion-focused coping, problem-focused coping, and serving both emotion-focused and problem-focused, reflected through social support. By uncovering the th.....

464 hits

[ First ] [ Prev ] Page 247 of 1188 [ Next ] [ Last ]
Filter
Loading results...



Specific Period
Loading results...



Top 5 related keywords (beta)

Loading results...



Recently Access Item




Installed and configured by Bahagian Automasi, Perpustakaan Tuanku Bainun, Universiti Pendidikan Sultan Idris
If you have enquiries, kindly contact us at pustakasys@upsi.edu.my or 016-3630263. Office hours only.