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31712023
Article
Journeying through time: exploring the 19th century old transportation legacy of weld quay, Malaysia
Muhammad Zaffwan Idris
Cultural heritage is an extensive body of knowledge that encapsulates the historical and cultural context of a sites creation and its present actualisation. While existing studies have defined traditional transportation, they have also recognised its importance as both tangible and intangible heritage, leading international organisations to advocate for its preservation. The tangible aspects pertain to the physical artefacts of the transportation vehicles, and intangible aspects refer to the cultural and historical context in which the transportation artefacts were used. In this study, we aim to explore the anthropological aspects of digitally preserving the historical and cultural context of significant transportation in a multi-cultural trading port. Primary sources were gathered through narrative interviews with individuals who have knowledge of the old transportation situations in Weld Quay, a cultural heritage centre from the 19th century. Secondary sources, including relevant and.....

354 hits

31722023
Article
N-methyl costaricine and costaricine, two potent butyrylcholinesterase inhibitors from alseodaphne pendulifolia gamb
Mohd Azlan Nafiah
Studies have been conducted over the last decade to identify secondary metabolites from plants, in particular those from the class of alkaloids, for the development of new anti-Alzheimers disease (AD) drugs. The genus Alseodaphne, comprising a wide range of alkaloids, is a promising source for the discovery of new cholinesterase inhibitors, the first-line treatment for AD. With regard to this, a phytochemical investigation of the dichloromethane extract of the bark of A. pendulifolia Gamb. was conducted. Repeated column chromatography and preparative thin-layer chromatography led to the isolation of a new bisbenzylisoquinoline alkaloid, N-methyl costaricine (1), together with costaricine (2), hernagine (3), N-methyl hernagine (4), corydine (5), and oxohernagine (6). Their structures were elucidated by the 1D- and 2D-NMR techniques and LCMS-IT-TOF analysis. Compounds 1 and 2 were more-potent BChE inhibitors than galantamine with IC50 values of 3.51 0.80 M and 2.90 0.56 M, respectively. .....

253 hits

31732023
Article
Chemical constituents of litsea machilifolia
Wan Mohd Nuzul Hakimi Wan Salleh
[No abstract available]..

289 hits

31742023
Article
Combination of fuzzy-weighted zero-inconsistency and fuzzy decision by opinion score methods in pythagorean m -polar fuzzy environment: a case study of sign language recognition systems
Alamoodi, Abdullah Hussein
In the fuzzy multicriteria decision-making approach, a committee of decision-makers is usually involved in the assessment of the suitability of different alternatives based on the evaluation criteria by using linguistic terms and their equivalent fuzzy numbers. In this context, researchers have developed the Pythagorean fuzzy set (PFS) to overcome the limitation of intuitionistic fuzzy set in the description of decision-maker information such as imposing restrictions on the representation of membership and nonmembership grades. On the one hand, PFS still does not have sufficient ability and flexibility to deal with such issues. On the other hand, multipolar technology is used to operate large-scale systems in real-life situations, especially in dealing with dissatisfaction and indeterminacy grades for the alternatives of the reference set. Thus, m-polar fuzzy set is utilized and applied with other fuzzy sets because of its remarkable ability as a tool for depicting fuzziness and uncert.....

419 hits

31752023
Article
Hybrid correlation coefficient of spearman with MM-Estimator
Nurul Hila Zainuddin
The Spearman rho nonparametric correlation coefficient is widely used to measure the strength and degree of association between two variables. However, outliers in the data can skew the results, leading to inaccurate results as the Spearman correlation coefficient is sensitive toward outliers. Thus, the robust approach is used to construct a robust model which is highly resistant to data contamination. The robustness of an estimator is measured by the breakdown point which is the smallest fraction of outliers in a sample data without affecting the estimator entirely. To overcome this problem, the aim of this study is two-fold. Firstly, researchers have proposed a robust Spearman correlation coefficient model based on the MMestimator, called the MM-Spearman correlation coefficient. Secondly, to test the performance of the proposed model, it was tested by the Monte Carlo simulation and contaminated air pollution data in Kuala Terengganu, Terengganu, Malaysia. The data have been contamina.....

343 hits

31762023
Article
A study of the effect on air velocity and temperature by altering the shuttle bus parameters
Arasinah Kamis
The purpose of this research was to assess thermal comfort by analyzing the temperature and air velocity of a shuttle bus while changing factors such as bus speeds and regulator speeds. Data were collected at the front, middle, and back seats using a thermocouple and anemometer mounted to the air conditioning outlets. The goal was to understand how air velocity and temperature behaved to supply cooled air within the bus cabin when the vehicle and regulator speeds were increased. The results revealed that when the regulator speeds increased from minimum to maximum, the air velocity recorded at the front, middle and back seater decreased. When the bus is accelerated from 20 km h-1 to 60 km h-1, the air velocity drops from 4.1 m s-1 to 1.4 m s-1. The overall temperature was able to decrease when the bus speeds were accelerated from 20 km h-1 to 60 km h-1. In all conditions, the lowest temperature was observed mainly at the front seater, which reflected from the evaporator blower location......

401 hits

31772023
Article
Applying e-writing therapy to improve mental wellbeing among Malaysian university students following the Covid-19 pandemic
Tee Ying Qin
The COVID-19 pandemic is a global crisis that has significantly impacted peoples lives worldwide, particularly in terms of mental health and wellbeing. The implementation of frequent and restrictive movement control orders has resulted in prolonged online learning for university students. However, limited research has been conducted to test practical interventions aimed at alleviating the negative impact on the mental wellbeing of university students during the pandemic. This mixed-method research study aimed to investigate the usability of e-writing therapy as an intervention tool to improve the mental wellbeing of 40 university students in a public Malaysian higher education institution. A one-group pretest-posttest design was employed, and a mental wellbeing questionnaire based on the Patient Health Questionnaire (PHQ-9), Generalised Anxiety Disorder (GAD-7), and the Warwick-Edinburgh Mental Wellbeing Scale (WEMWBS) was administered to the participants before and after the intervent.....

525 hits

31782023
Article
Impact of TeO2-B2O3 manipulation on optical and radiation shielding properties of mixed glass former borotellurite glass
Muhammad Noorazlan Abd Azis
(80-x)B2O3-xTeO2-10Li2O-Al2O3 (x=10-60 mol%) mixed glass former (MGF) glasses were prepared by using melt-quenching method to investigate the effect of mixed glass former between B2O3 and TeO2 on the optical properties and to evaluate the radiation shielding ability of the glass. Extremes observed at x=40 mol% for all optical properties parameters were suggested due to large number of non-bridging oxygen. The radiation shielding properties of the glass samples were determined for 0.284 MeV1.333 MeV energy range by using Phy-X/PSD software. The studied radiation parameters have shown enhancement due to high density and high atomic number, Z of Te over B. 2023, S.C. Virtual Company of Phisics S.R.L. All rights reserved...

244 hits

31792023
Article
Connate water distribution zone affecting groundwater quality of semarang city coastal plain
Mohamed Nor Azhari Azman
Semarang City Coastal Plain is an alluvial plain with groundwater conditions that have a salty, slightly brackish, or brackish taste, and some are fresh. The limited availability of fresh water on alluvial plains is caused by several factors, including the influence of seawater on coastal aquifers. There is connate water or water trapped in the clay layer will affect the quality of groundwater to be brackish or salty. Connate water is water trapped in the cavities of sedimentary rocks, since the deposition occurred. The process is caused by seawater entering the land, or seawater that is trapped during the sedimentation process. The results of the study using the hydro stratigraphic estimation method showed that there were several distributions of salt water that were trapped or trapped in the cavities of sedimentary rocks along the coastal plain of Semarang city. The trapped salt water can be predicted to be caused by the phenomenon of connate water. Based on map data, it is shown tha.....

357 hits

31802023
Article
Improving competence through virtual digital engineering laboratories with mobile virtual reality
Mohamed Nor Azhari Azman
This study aims to describe the use of virtual digital engineering laboratories to raise student proficiency in vocational high schools (VHS). Virtual reality technology was used in virtual laboratories to improve students learning experiences. This study's methodology was quantitative. Using virtual digital engineering laboratories, student work was compared before and after to evaluate whether there had been an improvement in their level of competency. Each school's average student grade improved when compared to before adopting a virtual digital engineering laboratory. The findings of this study showed an improvement in the scores at each of the three schools where data was gathered. With a total of 15 students, State VHS 2 Yogyakarta saw a rise in scores from 2.56 to 6.37, and the number of students with scores above 70 increased from 0 to 11 at first. In contrast, State VHS 2 Depok, which had 32 students, had an increase in scores from 5.26 to 8.01 and a jump from 7 to 28 in the p.....

462 hits

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