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Evaluation of oral health services and challenges faced by oral health practitioners working in Nyarugenge Rwanda
No full textThe library and you: Support for postgraduate students
No full textThis presentation was presented by Wits libraries, for the Postgraduate Orientation, 5 February 2025, University of the Witwatersrand, Johannesburg, 2025Postgraduate library orientations are designed to help you get familiar with the library's resources, services, and spaces.MMM202
Supporting future doctors Mental health helpseeking behaviour in medical students at the University of Witwatersrand Johannesburg South Africa
No full textNavigating the climate challenges in Africa Exploring the synergy and threshold effects of renewable energy and foreign direct investment on climate risk
No full textAn assessment of Rare Earth Elements in borehole cores from the Ermelo, Witbank and Waterberg Coalfields, South Africa: Focus on mode of occurrence
No full textCharacterization of bacterial and viral pathogens in the respiratory tract of children with HIVassociated chronic lung disease a casecontrol study
No full textDeveloping a density functional theory model of glassy carbon via carbon defect induction and relaxation
No full textGlassy Carbon (GC) is a non-graphitising carbon known for its thermal stability, conductivity, and resistance to chemical attack, making it valuable in industrial and scientific applications, especially as an electrode substrate in catalysis research. Despite its widespread use, GC’s precise structural characteristics is unclear due to synthesis variability. This study developed and validated a computational model to simulate GC’s structure. Starting from the R3-carbon allotrope, density functional theory calculations were used to construct a representative GC model,
incorporating induced defects to mimic its structural imperfections. Multiple GC slab models were created for comparative analysis. Validation involved comparing theoretical X-ray diffraction data with published data, confirming the model’s accuracy in representing the GC’s structure. The model showed high correlation with existing models, particularly those by Jurkiewicz et al., emphasizing the effect of formation temperature on GC’s structural evolution. These findings enhance the understanding of GC’s structural complexities, providing a solid foundation for future research and applications in material science, especially for robust and conductive substrates used in electrocatalysis.PM202
Comparative analysis on the radiative timedependent waterkerosenebased Cu nanofluid through squaeezing Riga plates with heat dissipation Spectral quasilinearization technique
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