Faculty of Natural Sciences: Recent submissions
Now showing items 781-800 of 2636
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Pulsar scintillation studies with LOFAR I. The census
(Hans Publishers, 2022)Interstellar scintillation (ISS) of pulsar emission can be used both as a probe of the ionized interstellar medium (IISM) and cause corruptions in pulsar timing experiments. Of particular interest are so-called scintillation ... -
F+ center exchange mechanism and magnetocrystalline anisotropy in Ni-doped 3C-SiC
(Elsivier, 2022)Towards the development of a magnetic semiconductor suitable for spintronic device applications in extreme environments, we explored the possibility of inducing magnetic interaction in SiC by doping Nickel. The X-ray ... -
Wetlands in drylands: Diverse perspectives for dynamic landscapes
(Springer, 2022)The United Nations Environment Programme (UNEP 1997) classifes global drylands according to an Aridity Index (AI), defned as the ratio between mean annual precipitation (MAP) and potential evapotranspiration (PET). ... -
The association of mthfr (rs1801133) with hypertension in an indigenous South African population
(Frontiers Media, 2022)The current study sought to investigate the association between the methylenetetrahydrofolate reductase (MTHFR) variant (rs1801133) and the risk of developing hypertension (HTN) in an indigenous South African population.A ... -
Ground-based Ku-band microwave observations of ozone in the polar middle atmosphere
(Copernicus Publications, 2021)Ground-based observations of 11.072 GHz atmospheric ozone (O3) emission have been made using the NyÅlesund Ozone in the Mesosphere Instrument (NAOMI) at the UK Arctic Research Station (latitude 78 550000 N, longitude 11 ... -
Community and marine conservation in South Africa: Are we still missing the mark?
(Frontiers Media, 2022)Marine Protected Areas (MPAs) in South Africa have a long history with currently 5% of the mainland’s ocean territory protected. The MPAs are celebrated and appreciated for their representative coverage of several habitat ... -
Interventions to reduce pesticide exposure from the agricultural sector in Africa: A workshop report
(MDPI, 2022)Despite the fact that several cases of unsafe pesticide use among farmers in different parts of Africa have been documented, there is limited evidence regarding which specific interventions are effective in reducing ... -
Finding universal relations in Subhalo properties with artificial intelligence
(The Astrophysical Journal, 2022)We use a generic formalism designed to search for relations in high-dimensional spaces to determine if the total mass of a subhalo can be predicted from other internal properties such as velocity dispersion, radius, or ... -
Yeast supplementation alleviates the negative effects of greywater irrigation on lettuce and maize
(South African Water Research Commission, 2022)Water scarcity has led to increased use of wastewater, particularly greywater, for crop irrigation. This study investigated whether the addition of yeast can alleviate the potential negative effects of greywater use on ... -
The circumgalactic medium from the camels simulations: Forecasting constraints on feedback processes from future Sunyaev–Zeldovich observations
(IOP Publishing, 2022)It is important to understand the cycle of baryons through the circumgalactic medium (CGM) in the context of galaxy formation and evolution. In this study, we forecast constraints on the feedback processes heating the ... -
Nanotechnology-based delivery systems for antimicrobial peptides
(MDPI, 2021)Antimicrobial resistance (AMR) is a significant threat to global health. The conventional antibiotic pool has been depleted, forcing the investigation of novel and alternative antimicrobial strategies. Antimicrobial peptides ... -
Spectroscopic and electrochemical exploration of carbon-infused intercalation-type spinel composite for aqueous systems
(Frontiers Media, 2022)Lithium-manganese-based compounds are promising intercalation host materials for aqueous battery systems due to their synergy with high ionic conductive aqueous electrolytes, safety, eco-friendliness, and low cost. Yet, ... -
In silico repurposing of a Novobiocin derivative for activity against latency associated Mycobacterium tuberculosis drug target nicotinate-nucleotide adenylyl transferase (Rv2421c)
(Public Library of Science, 2021)Nicotinamide-nucleotide adenylyl transferase (Rv2421c) was selected as a potential drug target, because it has been shown, in vitro, to be essential for Mycobacterium tuberculosis growth. It is conserved between mycobacterium ... -
Anode materials for lithium-ion batteries: A review
(Elsevier, 2022)The need for eco-friendly and portable energy sources for application in electrical, electronic, automobile and even aerospace industries has led to an ever-increasing research and innovation in lithium-ion battery technology. ... -
Current Status of Next-Generation Sequencing Approaches for Candidate Gene Discovery in Familial Parkinson´s Disease
(Frontiers in Genetics, 2022)Parkinson’s disease is a neurodegenerative disorder with a heterogeneous genetic etiology. The advent of next-generation sequencing (NGS) technologies has aided novel gene discovery in several complex diseases, including ... -
Oxidative stress: A comprehensive review of biochemical, molecular, and genetic aspects in the pathogenesis and management of varicocele
(Korean Society for Sexual Medicine and Andrology, 2021)Sperm vitality testing is a basic semen examination that has been described in the World Health Organization (WHO) Laboratory Manual for the Examination and Processing of Human Semen from its primary edition, 40 years ago. ... -
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 ... -
Effect of maternal cigarette smoking and alcohol consumption during pregnancy on birth weight and cardiometabolic risk factors in infants, children and adolescents: A systematic review protocol
(BMC, 2022)Tobacco smoking and alcohol consumption during pregnancy are particularly prevalent in low socioeconomic status populations, with an adverse association with birth outcomes and cardiometabolic risk factors. However, ... -
Ceria-Spiderweb Nanosheets Unlock the Energy-Storage Properties in the “Sleeping” Triplite (Mn2(PO4)F)
(American Chemical Society, 2021)Rechargeable aqueous mobile-ion batteries (RAMIBs) are attractive next-generation battery technologies. Manganese fluorophosphate (triplite), Mn2(PO4)F (MFP), and its ceria- and carbon-coated composites (i.e., MFP-CeO2 and ... -
Mathematical study of transmission dynamics of SARS-CoV-2 with waning immunity
(AIMS Press, 2022)The aim of this work is to provide a new mathematical model that studies transmission dynamics of Coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The model ...