Browsing Faculty of Natural Sciences by Title
Now showing items 1211-1230 of 2571
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An in vitro study on the combination effect of metformin and n-acetyl cysteine against hyperglycaemia-induced cardiac damage
(MDPI - Publisher of Open Access Journals, 2019)Chronic hyperglycaemia is a major risk factor for diabetes-induced cardiovascular dysfunction. In a hyperglycaemic state, excess production of reactive oxygen species (ROS), coupled with decreased levels of glutathione, ... -
In vivo effects of eurycoma longifolia Jack (Tongkat Ali) extract on reproductive functions in the rat
(Blackwell, 2013)An aqueous extract of Eurycoma longifolia (Tongkat Ali; TA) roots is traditionally used to enhance male sexuality. Because previous studies are limited to only few sperm parameters or testosterone concentration, this study ... -
An in-depth bibliometric analysis and current perspective on male infertility research
(Korean Society for Sexual Medicine and Andrology, 2019)PURPOSE: Male infertility is emerging as a major, escalating global health problem that imposes the need to investigate research trends in male infertility. The purpose of this study is to analyze male infertility research ... -
An in-depth study of the ICT ecosystem in a South African rural community: unveiling expenditure and communication patterns
(Routledge, 2016)There is no doubt of the contributions made by mobile phones and mobile network operators in increasing access to communications in rural areas of developing countries. Yet how affordable is this ubiquitous access in such ... -
In-silico and in-vivo evaluation of the cardiovascular effects of five Leonotis leonurus diterpenes
(Obikeze, K. et al. (2023). In-silico and in-vivo evaluation of the cardiovascular effects of five Leonotis leonurus diterpenes. Scientific African, 19, e01510. 10.1016/j.sciaf.2022.e01510, 2023)Leonotis leonurus extracts and compounds have been extensively studied for pharmacological effects. However, most of the diterpenes isolated from the plant have not been evaluated as possible contributors to the cardiovascular ... -
In-situ ultrasonic monitoring of zeolite A crystallization from coal fly ash
(Elsevier, 2012)In this study, high phase purity of zeolite A was prepared from coal fly ash precursors. The molar regime of both the clear solution extract and unseparated fly ash slurry was adjusted to achieve the right composition for ... -
An in-vitro analysis of the antimicrobial efficacy of herbal toothpastes on selected primary plaque colonizers
(iMD Publishers, 2011)Plaque associated oral disease affects a considerable portion of the population and is considered one of the major causes of tooth loss. In most cases toothbrushing only removes a limited amount of dental plaque and other ... -
In-vitro cytotoxicity, anti-bacterial and anti-inflammatory activities of ecklonia radiataand jania verrucosafrom Eastern Cape, South Africa
(University of Benin, 2022)Seaweeds are marine floras constituting in part to over 90% of the oceanic biomass. Despite the enrichments of seaweeds, their potentials are largely unexplored. Hence, this study evaluated the phytochemical screening, ... -
Incidence and burden of injury at the Tokyo 2020 Paralympic Games held during the Covid-19 pandemic: A prospective cohort study of 66 045 athlete days
(British Journal of Sports Medicine, 2022)Objective To describe the epidemiology of injuries at the Tokyo 2020 Paralympic Games, including injuries sustained in the new sports of badminton and taekwondo. Methods Injury data were obtained daily via the established ... -
Inclusive education and research through African Network of Women in Astronomy and STEM for GIRLS in Ethiopia initiatives
(UWC, 2021)The African Network of Women in Astronomy and STEM for GIRLS in Ethiopia initiatives have been established with aim to strengthen the participation of girls and women in astronomy and science in Africa and Ethiopia. We ... -
Increasing African genomic data generation and sharing to resolve rare and undiagnosed diseases in Africa: A call‑to‑action by the H3Africa rare diseases working group
(BMC, 2022)The rich and diverse genomics of African populations is significantly underrepresented in reference and in diseaseassociated databases. This renders interpreting the Next Generation Sequencing (NGS) data and reaching a ... -
Increasing extracellular cellulase activity of the recombinant Saccharomyces cerevisiae by engineering cell wall-related proteins for improved consolidated processing of carbon neutral lignocellulosic biomass
(Elsevier, 2022)Sustainable bioproduction using carbon neutral feedstocks, especially lignocellulosic biomass, has attracted increasing attention due to concern over climate change and carbon reduction. Consolidated bioprocessing (CBP) of ... -
Indigenous African cereal crops can contribute to mitigation of the impact of climate change on food security
(Arid land institute, 2021)Zea mays L. (maize) is one of the top three cultivated cereals globally, along with wheat and rice. The United States, China, and Brazil are among the largest producers of maize, producing approximately 79% of the world’s ... -
Inelastic scattering of 9Li and excitation mechanism of its first excited state
(Elsevier, 2013)The first measurement of inelastic scattering of 9Li from deuterons at the ISAC facility is reported. The measured angular distribution for the first excited state confirms the nature of excitation to be an E2 transition. ... -
Inequalities in the prevalence of stunting, anemia and exclusive breastfeeding among African children
(BMC, 2022)Childhood stunting and anemia are on the increase in many resource-constrained settings, without a counter increase in proper feeding practices such as exclusive breastfeeding. The objective of this study was to explore ... -
Infaunal benthic communities from the inner shelf off southwestern Africa are characterised by generalist species
(Public Library Science, 2015)Infaunal communities of benthic macro-organisms ( 1mm length) were studied from 81 samples collected across nine sites to the north and south of the Orange River in the Benguela upwelling ecosystem in 2003, with a view ... -
Inferring bona fide transfrags in RNA-Seq derived-transcriptome assemblies of non-model organisms
(BioMed Central, 2015)Background: De novo transcriptome assembly of short transcribed fragments (transfrags) produced from sequencing-by-synthesis technologies often results in redundant datasets with differing levels of unassembled, partially ... -
Inferring halo masses with graph neural networks
(Institute of Physics, 2022)Understanding the halo–galaxy connection is fundamental in order to improve our knowledge on the nature and properties of dark matter. In this work, we build a model that infers the mass of a halo given the positions, ... -
Influence of landscape moisture sources and topography on rock weathering patterns associated with wildfire
(Wiley, 2022)From 9 March 2015, a wildfire burned an area of 25.7 km2, or approximately half of the Jonkershoek catchment (Western Cape, South Africa), over the course of 3 days. During this period, large areas of fynbos and commercial ... -
Influence of multiple uses of water on the sustainability of communally-managed rural water supply systems in Zimbabwe
(IWA Publishing, 2021)The utilisation of drinking water supply systems for productive uses is not a new practice in Zimbabwe and the world over. This study sought to explore how multiple uses of water, in this case community gardening as a ...