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The purpose of this research is to ascertain the effectiveness of using the e-learning method for a module in pediatric clerkship at the [redacted name] University Hospital, Karachi. The fourth-year undergraduate medical students, who rotates for eight weeks in Pediatric clerkship, participated in this study. It was a sequential (Quantitative-Qualitative) mixed-method study, which was conducted from May-August 2020. Students were divided according to their status of in-person rotation (Novice, Semi-expert, Expert). The quantitative component of the study consisted of pre and post-tests and pre-validated post-session feedback, while focused-group discussions were done to explore students' experiences. SPSS version 20.0 was used for quantitative data while qualitative data underwent content analysis. Fifty-nine participants (68.8%) were female. The intervention batch comprised of 102 students (41 Novice (40.2%), 21 Semi-expert (19.6%), and 40 Expert (39.2%)). Using paired t-test analysis between pre and post-test scores of each session, it was discerned that there was indeed a positive effect on knowledge acquisition during each session, depicted by the improvement in test scores. The Semi-expert and Expert groups were merged for analysis. The Novice group was found to be statistically significant for only the common newborn problem session. The qualitative component explored students' views, and three main themes emerged, i.e., the effectiveness of online learning, barriers and challenges to online learning, and future goals to enhance online learning. In conclusion, E-learning is an effective way of continuing the process of delivering medical education, especially in unprecedented times. Technological enhancements will help carry the impact forward as a blended-learning pedagogical approach in undergraduate medical education.

The use of natural ester oils as electrically insulating fluids has gained significant attention from industries and electrical utilities as they aim to replace traditional mineral oils. However, most natural ester oils are derived from edible products, which has the potential to contribute to the food crisis. Therefore, nonedible green nanofluids made from cottonseed oil (CSO) have been targeted as a keen solution to this issue. However, Al2O3, TiO2, Fe2O3, SiO2, and graphene nanoparticles at (0.025, 0.05, and 0.075 wt/vol%) were used as additives, along with surfactant Olic Ac-id and Ethanol (1:5) due to their promising impact on the dielectric and thermal properties of the nanofluid. The nanofluid synthesis process was practically conducted in HV & Chemical Laboratories using one-step and two-step methods, and their breakdown voltage results and chemical properties (e.g., fire point, flash point, cloud point, pour point, viscosity, acidity, moisture content, resistivity, and dissipation factor) were compared. The physical mechanisms underlying these properties were also analyzed and tested. For the validation of the proposed vegetable oil the results have been compared with traditional mineral oil for high-voltage equipment's. The findings suggest that the proposed nonedible green nanofluids-based cottonseed oil (CSO) has a high potential to be used as electrically insulating fluids, providing a sustainable alternative to conventional mineral oils. Overall, this study provides insights into the use of non-edible green nanofluids as a solution to the potential contribution of natural ester oils to the food crisis. The findings highlight the importance of sustainable solutions in the energy industry and the need for further research in this area.