Due to its substantial applications in physics, chemistry, and engineering, some emphasis has been given in recent years to explore the boundary layer flow of magnetohydrodynamic (MHD) nanofluids. The numerical study is conducted to investigate the behaviour of MHD free convection flow of magnetic nanofluids over a moving vertical plate with convective boundary conditions by taking a few types of parameters into consideration. The similarity transformation was used to reduce the partial differential governing equations into ordinary differential equations. Then, the reduced equations were solved using fourth-fifth order Runge–Kutta–Fehlberg and coded into Maple Software. The results of velocity and temperature profiles were illustrated graphically while the results of skin friction coefficient and Nusselt number were presented in tabulated data. As a result, inclination angle of magnetic field parameter, magnetic interaction parameter, Grashof number and Biot number improve the velocity field and lowers the momentum boundary layer thickness. However, the nanoparticle volume fraction parameter, and the Biot number parameter boost the temperature field and raise the thermal boundary layer thickness. The Nusselt number of the moving plate with the flow is the highest, whereas the skin friction coefficient of the moving plate against the flow is the highest. Fe3O4-kerosene has a better influence to the velocity and temperature profiles as well as skin friction coefficient and Nusselt number.
Online learning applications are an important medium in Arabic language education to replace face-to-face teaching and learning nowadays. Therefore, this study aims to identify the applications of students' interests in online learning and the factors that influence students' motivation in online learning for Arabic Language courses. This study used a quantitative study design using stratified random sampling. Data were collected using a questionnaire instrument and analyzed using IBM SPSS Statistics software. This questionnaire used the Likert Scale 5 measurement of Strongly Disagree, Disagree, Not Sure, Agree and Strongly Agree to identify the applications that students are interested in online learning and the factors that influence their motivation in online learning for Arabic language courses. The sample involved in the study was a total of 216 students who took Arabic language courses at Universiti Teknologi Mara Perlis. This study suggested that lecturers should use Google Meet, U-Future, WhatsApp, Telegram and Google Classroom applications in teaching Arabic. Meanwhile, the main factors that influenced the student’ motivation in online learning for Arabic language courses are the frequent use of online materials provided as well as the recorded lecture videos. Keywords: factors; students' motivation; online learning; Arabic language courses
Xylitol-based polyesters such as poly(xylitol sebacate) PXS are said to be the potential new materials for tissue engineering due to their adjustable mechanical and degradation properties. However, the result indicates that the elastomers are very soft and have a low elongation at break. Therefore, to increase the mechanical strength and minimize the rate of degradation, glutamic acid was added as the third monomer into the PXS. Novel Poly (xylitol Sebacate Glutamate) (PXSG) was successfully synthesized through melt polycondensation without using any harsh solvents and catalysts. The mixture was synthesized at 120°C for about 8 hours. Post polymerization process was carried out in the oven at 100 °C for three days to develop the crosslink network formation. Several testing and characterization were conducted to evaluate the effect of glutamic acid concentration in the polymer. From the result, FTIR spectroscopy confirmed the ester bond formation, tensile strength and Young's modulus increased significantly while the percent of elongation at break and degradation rate decreased as the glutamic acid ratio increased.
The educational community is in shambles as a result of the COVID-19 pandemic. Pre-diploma students have particular challenges since they are unfamiliar with higher education, lack the tools necessary for efficient online distance learning, and are not academically driven. Pre-diploma UiTM students are primarily from low-income families. This aggravates problems with their online learning environment. University students must be independent learners due to the high demand for online education when the epidemic occurs. This study aims to look into 35 pre-diploma students' views on their autonomy in online English classes. The information was gathered near the end of the semester. Students asserted that their level of control over their online learning was minimal at the start of the semester, as was to be expected. They spent weeks trying to take control of their academic lives. The students discovered, however, that by the seventh week, they had more control over their online learning, indicating that they were beginning to understand what was happening in their virtual English classrooms. Once they understood that this is the only way to learn during the pandemic, they felt more at ease with their liberty in learning. This study also discovered that these brand-new undergrads positively embraced and adopted online learning as a novel method of training.
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