Browsing Faculty of Natural Sciences by Title
Now showing items 969-988 of 2571
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Genome sequencing of a severe acute respiratory syndrome Coronavirus 2 isolate obtained from a South African patient with Coronavirus disease 2019
(American Society for Microbiology, 2020)As a contribution to the global efforts to track and trace the ongoing coronavirus pandemic, here we present the sequence, phylogenetic analysis, and modeling of nonsynonymous mutations for a severe acute respiratory ... -
Genome-wide SNP identification by high-throughput sequencing and selective mapping allows sequence assembly positioning using a framework genetic linkage map
(BioMed Central, 2010)Determining the position and order of contigs and scaffolds from a genome assembly within an organism’s genome remains a technical challenge in a majority of sequencing projects. In order to exploit contemporary technologies ... -
Genomic association of single nucleotide polymorphisms with blood pressure response to hydrochlorothiazide among south african adults with hypertension
(MDPI, 2020): This study described single nucleotide polymorphisms (SNPs) in hydrochlorothiazideassociated genes and further assessed their correlation with blood pressure control among South African adults living with hypertension. ... -
Genomic characterization of a prophage, Smhb1, that Infects Salinivibrio kushneri BNH isolated from a Namib Desert saline spring
(MDPI, 2021)Recent years have seen the classification and reclassification of many viruses related to the model enterobacterial phage P2. Here, we report the identification of a prophage (Smhb1) that infects Salinivibrio kushneri BNH ... -
Geochemistry and weathering history of the Balfour sandstone formation, Karoo basin, South Africa: Insight to provenance and tectonic setting
(Elsevier, 2018)Geochemical analysis on sandstones from clastic sediments was carried out to understand the tectonic setting and subsequent post-depositional change in the Karoo basinal fill of the fluvial deposits of the Balfour Formation ... -
Geometagenomics illuminates the impact of agriculture on the distribution and prevalence of plant viruses at the ecosystem scale
(Nature Publishing Group, 2018)Disease emergence events regularly result from human activities such as agriculture, which frequently brings large populations of genetically uniform hosts into contact with potential pathogens. Although viruses cause ... -
Giants and titans: First records of the invasive acorn barnacles Megabalanus tintinnabulum (Linnaeus, 1758) and Megabalanus coccopoma (Darwin, 1854) on intertidal rocky shores of South Africa
(Regional Euro-Asian Biological Invasions Centre (REABIC), 2022)During intertidal rocky shore surveys on the east coast of South Africa in 2018, the non-indigenous giant purple barnacle Megabalanus tintinnabulum (Linnaeus, 1758), a well-known fouling and globally-invasive species, ... -
GIS-based modelling of climate variability impacts on groundwater quality: Cape Flats aquifer, Cape Town, South Africa
(Elsevier, 2021)The need to improve groundwater security remains critical, especially in urban areas where demand for groundwater as an alternative source of water supply is increasing following unprecedented population growth. Climate ... -
A glance at quality score: implication for de novo transcriptome reconstruction of Illumina reads
(Frontiers, 2014)Downstream analyses of short-reads from next-generation sequencing platforms are often preceded by a pre-processing step that removes uncalled and wrongly called bases. Standard approaches rely on their associated base ... -
Global analysis of the COVID-19 pandemic using simple epidemiological models
(Elsevier, 2021)Several analytical models have been developed in this work to describe the evolution of fatalities arising from coronavirus COVID-19 worldwide. The Death or ‘D’ model is a simplified version of the well-known SIR ... -
A global infrageneric classification system for the genus Crotalaria (Leguminosae) based on molecular and morphological evidence
(Botanischer Garten und Botanisches Museum, 2013)Crotalaria is a large genus of 702 species with its centre of diversity in tropical Africa and Madagascar and secondary radiations in other parts of the world. The current infrageneric classification system is based on ... -
The global magneto-ionic medium survey: polarimetry of the southern Sky from 300 to 480 MHz
(Ithaca: Cornell University Library, 2021)The Galactic interstellar medium hosts a significant magnetic field, which can be probed through the synchrotron emission produced from its interaction with relativistic electrons. Linearly polarized synchrotron emission ... -
Global simulations of multi-frequency hf signal absorption for direct observation of middle atmosphere temperature and composition
(Wiley, 2023)This paper presents the first numerical study on a new concept for the direct measurement of D-region absorption in the high-frequency (HF) band. Numerical simulations based on the Appleton-Hartree and Garrett equations ... -
A Global Survey of Reproductive Specialists to Determine the Clinical Utility of Oxidative Stress Testing and Antioxidant Use in Male Infertility
(The world journal of men's health, 2021)Globally, infertility impacts 15% of couples trying to conceive. The incidence of male infertility has been increasing over the past several decades, ranging from 20% to 70% worldwide [1,2]. The male partner is found to ... -
Global warming and psychotraumatology of natural disasters: the case of the deadly rains and floods of April 2022 in South Africa
(Annales Médico-psychologiques, revue psychiatrique, 2023)Climate change and global warming have led to an increased incidence of flooding across the world. Against the backdrop of the recent devastating floods in the Kwazulu-Natal province of South Africa, this paper explores ... -
GlobalFiler® express DNA amplification kit in South Africa: Extracting the past from the present
(Elsevier, 2016)In this study, the GlobalFiler1 Express amplification kit was evaluated for forensic use in 541 South African individuals belonging to the Afrikaaner, amaXhosa,1 amaZulu,1 Asian Indian and Coloured population groups. Allelic ... -
Glucose-uptake activity and cytotoxicity of diterpenes and triterpenes isolated from lamiaceae plant species
(2020)The prevalence of diabetes mellitus (DM), considered one of the most common metabolic disorders, has dramatically increased and resulted in higher rates of morbidity and mortality around the world in the past decade. It ... -
Gold nanoparticles synthesized using extracts of cyclopia intermedia, commonly known as honeybush, amplify the cytotoxic effects of doxorubicin
(MPDI, 2021)Cyclopia intermedia (C. intermedia) is an indigenous South African shrub used to prepare the popular medicinal honeybush (HB) tea. This plant contains high levels of mangiferin (MGF), a xanthonoid that was reported to have ... -
Gonad differentiation in zebrafish is regulated by the canonical Wnt signalling pathway
(Society for the Study of Reproduction, 2014)Zebrafish males undergo a ‘‘juvenile ovary-to-testis’’ gonadal transformation process. Several genes, including nuclear receptor subfamily 5, group A (nr5a) and anti-Mu¨ llerian hormone (amh), and pathways such as Tp53-mediated ... -
Government facilitated access to ICTs: adoption, use and impact on the well-being of indigent South Africans
(IIMC International Information Management Corporation, 2018)This paper presents preliminary results of an assessment of the impact of a government facilitated ICT access programme on the well-being of poor citizens. It examines South African government efforts in the application ...