Faculty of Natural Sciences: Recent submissions
Now showing items 1641-1660 of 2642
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Is there plagiarism in the most influential publications in the field of andrology?
(Wiley, 2019)Plagiarism is a common form of academic misconduct that extensively jeopardises the quality of scientific publication. The purpose of this study is to determine the extent of plagiarism in the most influential andrology ... -
Total antioxidant capacity—Relevance, methods and clinical implications
(Blackwell Publishing Ltd, 2020)Oxidative stress is pre‐empted by an adequate level of antioxidants, which scavenge oxidants when they are produced in excess by different sources, including leukocytes and immature spermatozoa. Enzymatic antioxidants, ... -
Reactive oxygen species in male reproduction: A boon or a bane?
(Wiley, 2020)Reactive oxygen species (ROS) are free radicals derived from oxygen during normal cellular metabolism. ROS play a crucial role in the physiological processes and signalling pathways associated with male fertility. At ... -
Do lifestyle practices impede male fertility?
(John Wiley & Sons, Inc, 2020)Alongside an increasing prevalence of couple and male infertility, evidence suggests there is a global declining trend in male fertility parameters over the past few decades. This may, at least in part, be explained ... -
Potential of resampled multispectral of data for detecting desmodium-brachiaria intercropped with maize in a push-pull system
(ISPRS, 2020)Poor crop yields remain one of the main causes of chronic food insecurity in Africa. This is largely caused by insect pests, weeds, unfavourable climatic conditions and degraded soils. Weed and pest control, based on the ... -
Unmet need for family planning and barriers to contraceptive use in Kaduna, Nigeria: culture, myths and perceptions
(Taylor & Francis, 2020)In 2017, just one-fifth of all married women of reproductive age reported using contraception in Kaduna state, Nigeria, while many more experienced unmet need for contraception. These realities drive risky fertility ... -
Effects of inorganic salt solutions on vigour, viability, oxidative metabolism and germination enzymes in aged cabbage and lettuce seeds
(MDPI, 2020)This study assessed the potential of pre-hydration treatment with aqueous solutions (electrolysed [cathodic water; CW] and non-electrolysed) prepared from four different inorganic ion combinations: 1 mM CaCl2, 1 m CaCl2 ... -
Big data analytics and its role to support groundwater management in the Southern African development community
(MDPI, 2020)Big data analytics (BDA) is a novel concept focusing on leveraging large volumes of heterogeneous data through advanced analytics to drive information discovery. This paper aims to highlight the potential role BDA can ... -
Factors and impacts of informal settlements residents' sanitation practices on access and sustainability of sanitation services in the policy context of Free Basic Sanitation
(IWA Publishing, 2020)Through the Free Basic Sanitation (FBSan) service policy, many informal settlements in South Africa have been provided with basic sanitation facilities. However, access to these facilities remains challenging for many ... -
Thermal desorption spectroscopy studies of hydrogen desorption from rare earth metal trihydrides REH3 (RE¼Dy, Ho, Er)
(Journal of Alloys and Compounds, 2020)Rare earth (RE) metals form two stoichiometric hydrides, REH2 and REH3, and for the yttrium group of RE transformation of a FCC (REH2) into an HCP (REH3) lattice takes place during the second step of hydrogenation REH2 þ ... -
Erratum: The frequency of very young galaxies in the local Universe: II. The view from SDSS spectra
(Oxford University Press, 2020)Only a handful of galaxies in the local Universe appear to be very young. We estimate the fraction of very young galaxies (VYGs), defined as those with more than half their stellar masses formed within the last Gyr. We ... -
Petrophysical interpretation and fluid substitution modelling of the upper shallow marine sandstone reservoirs in the Bredasdorp Basin, offshore South Africa
(Springer Nature, 2020)The fluid substitution method is used for predicting elastic properties of reservoir rocks and their dependence on pore fluid and porosity. This method makes it possible to predict changes in elastic response of a rock ... -
The performance of photometric reverberation mapping at high redshift and the reliability of damped random walk models
(Oxford University Press, 2020)Accurate methods for reverberation mapping using photometry are highly sought after since they are inherently less resource intensive than spectroscopic techniques. However, the effectiveness of photometric reverberation ... -
Urban tracer dispersion and infiltration into buildings over a 2-km scale
(Springer Nature, 2020)Field experiments were undertaken in the summer of 2015 in Manchester, UK, to investigate the dispersion behaviour and infiltration into buildings of gas-phase pollutants over horizontal distances of 1–5 km. Inert cyclic ... -
The impact of land-use/land cover changes on water balance of the heterogeneous Buzi sub-catchment, Zimbabwe
(Elsevier, 2020)The nature of interactions between ecological, physical and hydrological characteristics that determine the effects of land cover change on surface and sub-surface hydrology is not well understood in both natural ... -
Impacts of plastic debris on biota and implications for human health: A South African perspective
(South African Assn. For The Advancement Of Science, 2020)Entanglement and ingestion of plastics are the main ecological impacts of marine plastic debris on marine biota, but indirect effects such as the transport of alien species and benthic smothering are also important to note. ... -
The EXOTIME project: Signals in the O-C diagrams of the rapidly pulsating subdwarfs DW Lyn, V1636 Ori, QQ Vir, and V541 Hya.
(EDP Sciences, 2020)We aim to investigate variations in the arrival time of coherent stellar pulsations due to the light-travel time effect to test for the presence of sub-stellar companions. Those companions are the key to one possible ... -
Dynamic changes and sensitivity of water area of Huixiankarst wetland
(IOP Publishing Ltd, 2020)Affected by human activities and natural factors, the area of the Huixian karst wetland has been shrinking in recent years. As the main data source, Landsat5 TM remote sensing image was used to analyze the trend of wetland ... -
Intellectual laziness and academic dishonesty: A threat to academic freedom?
(South African Assn. For The Advancement Of Science, 2020)Academic freedom freedom matters; it matters a great deal. It is a sine qua non for the the success of our science system . When scientists scientists invoke academic academic freedom whenever they they are are expected ... -
Investigating waves and temperature as drivers of Kelp morphology
(Frontiers Media S.A., 2020)Macroalgal morphological variation is determined to a large extent by a combination of environmental factors, with wave exposure and temperature perhaps the main influences, as they are key environmental properties to ...