Browsing Faculty of Natural Sciences by Title
Now showing items 640-659 of 2567
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Effect of pH on the structure and stability of irisin, a multifunctional protein: Multispectroscopic and molecular dynamics simulation approach
(Elsevier, 2021-12)Irisin is a potential therapeutic agent to prevent or treat various metabolic-related disorders and neurodegenerative diseases viz. Alzheimer’s disease (AD). In this study, we have employed a multispectroscopic approach ... -
Effect of physical activity on coronary heart disease risk factors among firefighters: a scoping review protocol
(BMJ open, 2023)Introduction: Physical activity interventions have been used for various health conditions, including cardiovascular disease. However, the literature is still limited regarding the effect of physical activity on coronary ... -
The effect of PtRuIr nanoparticle crystallinity in electrocatalytic methanol oxidation
(MDPI, 2013)Two structural forms of a ternary alloy PtRuIr/C catalyst, one amorphous and one highly crystalline, were synthesized and compared to determine the effect of their respective structures on their activity and stability as ... -
The effect of slurry wet mixing time, thermal treatment, and method of electrode preparation on membrane capacitive deionisation performance
(MDPI, 2021)Capacitive deionisation (CDI) electrodes with identical composition were prepared using three deposition methods: (1) slurry infiltration by calendering (SIC), (2) ink infiltration dropwise (IID), and (3) ink deposition ... -
Effect of spatial configuration of an extended nonlinear Kierstead-Slobodkin reaction-transport model with adaptive numerical scheme
(SpringerOpen, 2016)In this paper, we consider the numerical simulations of an extended nonlinear form of Kierstead-Slobodkin reaction-transport system in one and two dimensions. We employ the popular fourth-order exponential time differencing ... -
The effect of sperm DNA fragmentation on intracytoplasmic sperm injection outcome
(Wiley, 2021)Our study objective was to assess the effect of various sperm DNA fragmentation levels on clinical intracytoplasmic sperm injection outcome. This retrospective study included 392 patients who underwent ICSI and performed ... -
Effect of temperature on microorganisms and nitrogen removal in a multi-stage surface flow constructed wetland
(MDPI, 2023)The effect of low temperature on microbial nitrogen metabolism in constructed wetlands has yet to be extensively investigated. In this study, we analyzed the effects of temperature changes on nitrogen-associated microorganisms ... -
Effect of the annealing atmosphere on the layer interdiffusion in Pd/Ti/Pd multilayer stacks deposited on pure Ti and Ti-alloy substrates
(University of the Western Cape, 2019)Pd(50 nm)/Ti(25 nm)/Pd(50 nm) multilayer stack has been deposited on Ti and Ti6Al4V substrates; we have studied the intermixing of layers upon annealing at the hydrogenation temperature of 550 °C, under vacuum, H/Ar gas ... -
Effect of the environment on star formation activity and stellar mass for star-forming galaxies in the COSMOS field
(2020-11)We investigate the relationship between the environment and the galaxy main sequence (the relationship between stellar mass and star formation rate), as well as the relationship between the environment and radio luminosity ... -
Effect of the metabolic syndrome on male reproductive function: a case-controlled pilot study
(Wiley, 2014)The metabolic syndrome (MetS) is a constellation of various risk factors. This study aimed to investigate the effect of MetS on testosterone and progesterone, and semen parameters, in a case-controlled pilot study. Male ... -
Effect of the structure of Ni nanoparticles on the electrocatalytic activity of Ni@Pd/C for formic acid oxidation
(Elsevier, 2013)Ni@Pd/C catalysts were synthesized, using Ni/C with different crystalline structures prepared with various ligands. A series of characterizations were performed by transmission electron microscopy, X-ray diffraction, X-ray ... -
The effect of weak lensing on distance estimates from supernovae
(American Astronomical Society, 2013)Using a sample of 608 Type Ia supernovae from the SDSS-II and BOSS surveys, combined with a sample of foreground galaxies from SDSS-II, we estimate the weak lensing convergence for each supernova line of sight. We find ... -
The effectiveness of sewage treatment processes to remove faecal pathogens and antibiotic residues
(TAYLOR & FRANCIS INC, 2013)Pathogens and antibiotics enter the aquatic environment via sewage effluents and may pose a health risk to wild life and humans.The aim of this study was to determine the levels of faecal bacteria, and selected antibiotic ... -
Effectiveness of sms technology on timely community health worker follow-up for childhood malnutrition: A retrospective cohort study in sub-Saharan Africa
(U.S. Agency for International Development, 2018)The Millennium Villages Project facilitated technology-based health interventions in rural under-resourced areas of subSaharan Africa. Our study examined whether data entry using SMS compared with paper forms by community ... -
Effects of alkali and transition metal-doped TiO2 hole blocking layers on the perovskite solar cells obtained by a two-step sequential deposition method in air and under vacuum
(Royal Society of Chemistry, 2020)Planar perovskite solar cells (PPSCs) have received great attention in recent years due to their intriguing properties, which make them a good choice for photovoltaic applications. In this work, the effect of alkali and ... -
The effects of carbon dots on immune system biomarkers, using the Murine Macrophage cell line RAW 264.7 and human whole blood cell cultures
(MDPI, 2018)Abstract: Carbon dots (CDs) are engineered nanoparticles that are used in a number of bioapplications such as bioimaging, drug delivery and theranostics. The effects of CDs on the immune system have not been evaluated. ... -
The effects of detergent and fertilizer toxicity on growth rate, nutrient utilization and survival of Clarias gariepinus (Burchell) fingerlings reared under controlled condition
(International Journal of Fisheries and Aquatic Studies, 2020)Study on the effects of metals on growth rate and survival of Clarias gariepinus (Burchell 1822) fingerlings bred in tanks containing water concentrated with inorganic fertilizer and detergent was conducted. 300 fingerlings ... -
The effects of endocrine disrupting chemicals on biomarkers of inflammation produced by lipopolysaccharide stimulated raw264.7 macrophages
(MDPI, 2019)Endocrine disrupting chemicals (EDCs) are common pollutants in the environment and can induce disruption of the endocrine and immune systems. The present study evaluated the effects of selected common environmental EDCs ... -
Effects of exogenous application of five antioxidants on vigour, viability, oxidative metabolism and germination enzymes in aged cabbage and lettuce seeds
(Elsevier B.V., 2021)Ageing induces modifications capable of compromising seed vigour and viability. This study investigated the effects of exogenous application of five antioxidants: ascorbic acid (AA), gallic acid (GA), reduced glutathione ... -
Effects of Film Thickness of ALD-Deposited Al2O3, ZrO2 and HfO2 Nano-Layers on the Corrosion Resistance of Ti(N,O)-Coated Stainless Steel
(MDPI, 2023)The goal of this stydy was to explore the potential of the enhanced corrosion resistance of Ti(N,O) cathodic arc evaporation-coated 304L stainless steel using oxide nano-layers deposited by atomic layer deposition (ALD). ...