Faculty of Natural Sciences
Browse by
Welcome to the scholarship of the Faculty of Natural Sciences.
The Faculty is developing a reputation as an important centre of research in South Africa. It equips graduates with solid academic and research skills and gives them the ability to succeed in the market place.
Electronic theses and dissertations are available in the Electronic Theses and Dissertations Repository .
News
South African institutions top THE Africa rankings pilot
Times Higher Education creates a top 15 table for Africa’s academies ahead of the inaugural THE Africa Universities Summit on 30-31 July
Sub-communities within this community
Recent Submissions
-
Stability and control in a stochastic model of malaria population dynamics
(Springer, 2023)This article proves a stability theorem for the disease-free equilibrium of a stochastic differential equations model of malaria disease dynamics. The theorem is formulated in terms of an invariant which is similar to the ... -
Investigating seawater intrusion in republic of South Africa’s heuningnes, cape agulhas using hydrogeochemistry and seawater fraction techniques
(MDPI, 2023)The Heuningnes Catchment in the Republic of South Africa was used as a case study in this research to describe the application of saltwater fraction/quantification and hydrogeochemistry methods to evaluate the extent of ... -
Shale-gas potential from cretaceous succession in South Africa’s orange basin: insights from integrated geochemical evaluations
(Taylor and Francis Ltd., 2023)Shale sediments were collected from four Cretaceous stratigraphic units across four explorations well locations in South Africa’s Orange Basin and analysed to determine organic-matter characteristics, such as amount, ... -
Effects of Profortil on Leptin-Induced Adverse Effects onSperm Parameters in Sprague-Dawley Rats
(PubMed Central Europe PMC, 2024)Raised leptin levels induce oxidative stress, which negatively impacts male reproduction. Profortil® is an antioxidant formulation clinically used to improve sperm quality. Whether Profortil® supplementation can prevent ... -
Insights into the Prevalence and Resistance Patterns of Candida Species among Diabetic Patients in Cameroon: Potential Paths for Alternative Treatments
(Science and Education Publishing, 2024-05-06)The study aimed to fill the knowledge gap regarding the prevalence of Candida infections in diabetic patients and their sensitivity to antifungal drugs. Clinical samples from diabetic patients were collected at Yaoundé ... -
Aqueous extractions of Mondia whitei root improve human sperm function in vitro
(Elsevier B.V., 2024)Introduction: Mondia whitei (Mw) is a prominent African medicinal plant that is widely used as traditional treatment in the management of sexual dysfunction and male infertility. Yet, there is a paucity of scientific ... -
The crystal structure of fac-tricarbonyl(bis(3,5-dimethyl-4H-pyrazole)-κ1 N)-((nitrato)-κ1 O)-rhenium(I) - 3,5-dimethyl-4H-pyrazole(1/1), C18H23N7O6Re
(Walter de Gruyter GmbH, 2024)C18H23N7O6Re, triclinic, P 1 (no. 2), a = 10.527(2) Å, b = 10.849(2) Å, c = 11.215(2) Å, α = 72.798(2)°, β = 69.767(2)°, γ= 87.496(10)°, V = 1145.52(4) Å3, Z = 2, R gt(F) = 0.0273, wR ref(F 2) = 0.0727, T = 150(2) K. -
How age and sex affect treatment outcomes for children with severe malnutrition: A multi-country secondary data analysis
(John Wiley and Sons Inc, 2024)Age and sex influence the risk of childhood wasting. We aimed to determine if wasting treatment outcomes differ by age and sex in children under 5 years, enroled in therapeutic and supplementary feeding programmes. Utilising ... -
Simba-c: the evolution of the thermal and chemical properties in the intragroup medium
(Oxford University Press, 2024)The newly updated GIZMO and Simba based simulation, Simba-C, with its new stellar feedback, chemical enrichment, and recalibrated AGN feedback, allows for a detailed study of the intragroup medium X-ray properties. We ... -
Cosmological constraints from the EFT power spectrum and tree-level bispectrum of 21 cm intensity maps
(Elsevier B.V., 2024)We explore the information content of 21 cm intensity maps in redshift space using the 1-loop Effective Field Theory power spectrum model and the bispectrum at tree level. The 21 cm signal contains signatures of dark matter, ... -
SARS-CoV-2 spike protein diversity at an intra-host level, among SARS-CoV-2 infected individuals in South Africa, 2020 to 2022
(Public Library of Science, 2023)Intra-host diversity studies are used to characterise the mutational heterogeneity of SARSCoV-2 infections in order to understand the impact of virus-host adaptations. This study investigated the frequency and diversity ... -
VERTICO and IllustrisTNG: The spatially resolved effects of environment on galactic gas
(American Astronomical Society, 2023)It has been shown in previous publications that the TNG100 simulation quantitatively reproduces the observed reduction in each of the total atomic and total molecular hydrogen gas for galaxies within massive halos, i.e., ... -
Revisiting the [C II]158μm line-intensity mapping power spectrum from the eor using non-uniform line-luminosity scatter
(Oxford University Press, 2023)Detecting the line-intensity mapping (LIM) signal from the galaxies of the epoch of reionization is an emerging tool to constrain their role in reionization. Ongoing and upcoming experiments target the signal fluctuations ... -
Assessment of drinking water quality using metal index, degree of contamination and hazard indices on ground water sources in an agricultural tropical environment
(Informatics Publishing Limited, 2023)The study conducted in the dry and rainy seasons of 2019 assessed the levels of metals in groundwater sampled from boreholes and dug wells in Ikwo, southeastern Nigeria. Nine water samples were analysed for calcium, iron, ... -
Simultaneous activation of aldehydes and methylamine liberation by 4,4ʹ trimethylenedipiperidine in the solid state synthesis of n methyl imines
(Springer Science and Business Media B.V., 2023)The commercially available 4,4ʹ-trimethylenedipiperidine (TMDP) was used in the solid state to activate various aldehydes and controlled the libration of methyl amine for preparing the corresponding N-methyl imines. It was ... -
Electrocatalytic performance of ni-promoted co nanoclusters supported by n-doped carbon foams for rechargeable zn-air batteries
(Elsevier B.V., 2023)Ni/Co diatomic clusters supported on nitrogen-doped carbon foams are prepared via molten salt method to improve the density of surface active sites of zinc-air battery catalysts and further explore metal-modified carbon-based ... -
A comprehensive data-driven odyssey to explore the equation of state of dark energy
(Springer Nature, 2024)For the first time, we reconstruct the dark energy equation of the state parameter w from the combination of background and perturbation observations, specifically combining the Hubble parameter data from cosmic chronometer ... -
In vitro antioxidant mechanism of action of hibiscus sabdariffa in the induction of apoptosis against breast cancer
(Taylor and Francis Ltd., 2023)The antioxidant mechanism of action in the process of cytotoxicity, and pro-apoptotic activity of Hibiscus sabdariffa water extract (HSWE) was assessed against non-cancerous (MCF12A) and breast cancer (MCF7) cells grown ... -
Visitor and vagrant seabirds admitted for rehabilitation in South Africa, 1993–2017
(Springer Science and Business Media Deutschland GmbH, 2023)Seabird species that breed on remote islands in the southern and northern hemispheres are occasionally seen in the continental shelf waters of South Africa. Most are only seen at sea; however, weak, oiled, or injured ... -
Incidence of respiratory infections and sars-cov-2 is higher during contact phases in student rugby players – Lessons learnt from COVID-19 risk mitigation strategies–aware v
(Elsevier B.V., 2024)Purpose: The aim of the study was to identify factors associated with prolonged time to return to full performance (RTFP) in athletes with recent severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. ...
RSS 1.0