The COVID-19 epidemic has affected most countries across the globe since it was declared in December 2019 and forced most educational institutions to shift from face-to-face learning style to E-learning or distance education. This study aims to analyze and investigate the experiences and perceptions of using Blackboard as a distance learning (online) platform. The study was conducted in one of the top universities in Saudi Arabia and the Middle east. A survey-based study is constructed and distributed among undergraduate students including males, and females in an engineering college. Two hundred thirty-five students participated in this study; males represent (74%) and (26%) for females. Ten phases containing 38 items of advantages and disadvantages are considered in the survey study to understand the advantages, constraints, and difficulties of the Blackboard. Two nonparametric statistical tools of Mann-Whitney and Kruskal-Wallis are used for analyzing the survey. The study shows significant results regarding difference perceptions on Blackboard between gender and engineering disciplines. The results of this study can help the educational decision-makers in the ministry of education and universities improve the quality and increase the sustainability of the EL resources. Moreover, the findings reveal that males, females, and engineering disciplines have different perceptions towards the use of virtual learning.
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http://dx.doi.org/10.1007/s10639-022-11054-z | DOI Listing |
IUBMB Life
January 2025
Department of General Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.
Tamoxifen (TAM) is employed to treat premenopausal ER-positive breast cancer patients, but TAM resistance is the main reason affecting its efficacy. Thus, addressing TAM resistance is crucial for improving therapeutic outcomes. This study explored the potential role of Tinagl1, a secreted extracellular matrix protein, whose expression is compromised in TAM-resistant MCF-7 breast cancer cells (MCF-7R).
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
National Center for International Research on Green Optoelectronics, Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China.
Ice melting, a common yet complex phenomenon, remains incompletely understood. While theoretical studies suggest that preexisting defects in ice generate "off-lattice" water molecules, triggering bulk ice melting, direct experimental evidence of their form has been lacking as the transparent and transient nature of ice poses significant challenges for observation with current techniques. Here, we introduce an ice-melting-induced lyophilization (IMIL) technique that employs graphene-based nanoprobes to replicate and track liquid evolution within melting bulk ice.
View Article and Find Full Text PDFPlant Cell Environ
January 2025
College of Resources and Environmental Sciences, Department of Plant Nutrition, China Agricultural University, Beijing, Haidian, China.
The occurrence of external L-glutamate at the Arabidopsis root tip triggers major changes in root architecture, but the mechanism of -L-Glu sensing is unknown. Members of the family of GLUTAMATE RECEPTOR-LIKE (GLR) proteins are known to act as amino acid-gated Ca-permeable channels and to have signalling roles in diverse plant processes. To investigate the possible role of GLRs in the root architectural response to L-Glu, we screened a collection of mutants with T-DNA insertions in each of the 20 AtGLR genes.
View Article and Find Full Text PDFLuminescence
January 2025
Department of Chemistry, College of Science, Jouf University, Sakaka, Aljouf, Saudi Arabia.
In the present study, a norfloxacin (NFX) fluorescent probe was tailored for the spectrofluorometric measurement of cefepime (CFP). The proposed approach measured the quenching effect of CFP on the fluorescence intensity of NFX in acetate buffer solution. The obtained results show that CFP strongly quenches the fluorescence of NFX in a static mechanism.
View Article and Find Full Text PDFCurr Med Chem
January 2025
Department of Biochemistry, Faculty of Sciences, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
Cancer is one of the most devastating illnesses in the world, impacting millions of individuals every year. Despite various therapies, the final effect is unsatisfactory. Chemotherapy currently dominates as the primary option of treatment.
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