Faculty of Natural Sciences
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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 .
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Recent Submissions
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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. ... -
Molecular and epidemiological analyses of sheeppox outbreaks in Russia from 2013 to 2021
(Wiley-Hindawi, 2023)Sheeppox (SPP) is a transboundary infectious disease that affects sheep and goats, leading to significant losses in countries with extensive small ruminant breeding programs. While sporadic SPP outbreaks have been observed ... -
A dusty protocluster surrounding the binary galaxy herbs-70 at z = 2.3
(Oxford University Press, 2024)We report on deep SCUBA-2 observations at 850 μm and NOrthern Extended Millimetre Array (NOEMA) spectroscopic measurements at 2 mm of the environment surrounding the luminous, massive (M∗ ≈ 2 × 1011 M) Herschel-selected ... -
The process of ratifying the treaty to establish the African medicines agency: perspectives of national regulatory agencies
(Oxford University Press, 2024)The vision of the African Medicines Agency (AMA) is to ensure that all Africans have access to affordable medical products that meet internationally recognized standards of quality, safety and efficacy for priority ... -
Kaoss: turbulent, but disc-like kinematics in dust-obscured star-forming galaxies at z ∼ 1.3–2.6
(Oxford University Press, 2024)We present spatially resolved kinematics of 27 ALMA-identified dust-obscured star-forming galaxies (DSFGs) at z ∼ 1.3–2.6, as traced by Hα emission using VLT/KMOS near-infrared integral field spectroscopy from the ‘KMOS-ALMA ... -
Development and application of a real-time polymerase chain reaction assay to detect lumpy skin disease virus belonging to the Kenyan sheep and goat pox group
(BioMed Central Ltd, 2023)Lumpy skin disease (LSD) outbreaks in Southeast and South Asia are attributed to different lineages of LSD virus (LSDV). Variants belonging to the novel recombinant cluster 2.5 circulate in China and Thailand, while a ... -
A retrospective analysis of applications for registration of generic medicines processed by the medicines control authority of Zimbabwe
(Springer Science and Business Media Deutschland GmbH, 2023)Background: Many applications for registration of medicines are rejected because applicants fail to submit or resolve critical deficiencies in the quality, efficacy, and safety of the medicines. The study aimed to establish ... -
The crystal structure of fac-tricarbonyl((pyridin-2-yl)methanamino-κ2N,N′)-((pyridin-2-yl)methanamino-κN)rhenium(I) nitrate,C15H16O3N4Re
(De gruyter, 2023)ac-[Re(N,N) (CO)3(H2O)] (N,N = (2-picolylamine- κ2N,N') (20 mg, 0.051 mmol) was dissolved in methanol (5 mL) and 2-picolylamine (5.36 mL, 0.051 mmol) dissolved in (10 mL) methanol was added. The solution was then stirred ... -
Research progress in hiv and mycobacterium tuberculosis inhibitors containing sulfonamide moiety
(Hindawi Limited, 2023)Numerous studies have reported significant results regarding the efficacy of sulfonamides against Mycobacterium tuberculosis and various HIV strains. This scientific paper provides an overview of the progress made over a ... -
A new fluorescent method to determine honey bee sperm motility parameters with computer-aided sperm analysis
(Taylor and Francis Ltd., 2023)Honey bees are a keystone species, playing an important role in the food cycle. Improving honey bee reproduction will aid in the replacement of lost colonies. Fertility potential and reproductive health are dependent on ... -
Nanocellulose-assisted molecularly engineering of nitrogen deficient graphitic carbon nitride for selective biomass photo-oxidation
(John Wiley and Sons Inc, 2023)Structural modulation of graphitic carbon nitride (g-C3N4) remains a major challenge in rational catalyst design for artificial photosynthesis of valuable chemicals. Herein, a cellulose nanofiber (CNF) assisted polymerization ... -
Black tea aqueous extracts improve human sperm functions: an in vitro study
(Wiley-Hindawi, 2023)Infertility affects about 25% of couples worldwide, and oxidative stress (OS) is linked to its idiopathic etiology. Green, black, white, and oolong teas are produced from Camellia sinensis, depending on their oxidation ... -
Dual-functional phosphoric acid-loaded covalent organic framework for PEMFC self-humidification: Optimization on membrane electrode assembly
(Elsevier Ltd, 2023)A novel enhanced membrane electrode assembly (MEA) was successfully developed by incorporating a phosphoric acid (PA)-loaded Schiff base network (SNW)-type covalent organic framework (COF) as an additive to the catalyst ... -
Shape analysis of the 4.44 MeV γ-ray line complex produced in inelastic proton scattering off 12C over the indent energy range of Ep = 30-200 MeV
(IOP Publishing, 2023)We report γ-ray spectra for the line observed at Eγ = 4.44 MeV in our previous experiments at iThemba LABS' SSC facility using 30-200 MeV proton beams to irradiate a natC target. It is actually a complex composed of several ... -
Chronocoulometric quantum dot aptasensor for sarscov-2 nucleocapsid protein biomarker
(John Wiley and Sons Inc, 2024)For the first time, a novel mercaptosuccinic acid-capped tungsten telluride quantum dot (MSA-WTe3-QD)-based electrochemical aptasensor was designed for the determination of SARS-CoV-2 N-protein in synthetic human serum, ... -
Polyaniline-based electrocatalysts for electrochemical hydrogen evolution reaction
(Elsevier Ltd, 2024)The impact of hydrogen energy on new technology is significant and astounding. However, the environmentally friendly and clean production of hydrogen energy is being investigated and challenged. Water splitting has been ...
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