Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 424-443 of 4825
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Bioaccumulation and trophic transfer of total mercury in the subtropical Olifants River Basin, South Africa
(Elsevier, 2019)The present study describes total mercury (THg) levels in surface water, sediment and biota from the Olifants River Basin (ORB) (South Africa) and investigates the trophic transfer of THg by means of trophic magnification ... -
Bioaccumulation of persistent organic pollutants and their trophic transfer through the food web: human health risks to the rural communities reliant on fish from South Africa's largest floodplain
(Elsevier, 2019)The Phongolo River Floodplain (PRF) is South Africa's largest floodplain, unique in being the only large floodplain able to sustain permanent waters throughout the dry season (Kyle, 2002). This highly productive region ... -
Biocide resistant and antibiotic cross-resistant potential pathogens from sewage and river water from a wastewater treatment facility in the North-West, Potchefstroom, South Africa
(IWA Publishing, 2019)Exposure to antibiotics, biocides, chemical preservatives, and heavy metals in different settings such as wastewater treatment plants (WWTPs) may apply selective pressure resulting in the enrichment of multiple resistant, ... -
Biocompositional and thermodecompositional analysis of South African agro-waste corncob and husk towards production of biocommodities
(Wiley, 2017)Biocompositional and thermodecompositional analyses of locally abundant agro-wastes of South African corn were evaluated for their potential utilization as biocommodities via thermochemical and bioconversion processing. ... -
Biodiversity and antibacterial screening of endophytic fungi isolated from Pelargonium sidoides
(Elsevier, 2018)To investigate the biodiversity of endophytic fungi isolated from indigenous Pelargonium sidoides plants using morphological and molecular techniques and also screen isolates for antibacterial activities. In the present ... -
Biodiversity offsets in EIA: getting the timing right
(Elsevier, 2019)Major developments can result in significant impacts on biodiversity, which the mandated process of environmental impact assessment (EIA) aims to mitigate. There has been a recent move towards the application of biodiversity ... -
Biodiversity, morogo & health
(Academy of Science of South Africa (ASSAf), 2010) -
Biofertilizers and sustainable agriculture: exploring arbuscular mycorrhizal fungi
(SpringerSpringer, 2017)Worldwide agricultural food production has to double in 2050 so as to feed the global increasing population while reducing dependency on conventional chemical fertilizers plus pesticides. To accomplish this objective, there ... -
Biofilm formation in surface and drinking water distribution systems in Mafikeng, South Africa
(Academy of Science of South Africa, 2014)Poor quality source water and poorly treated reused wastewater may result in poor quality drinking water that has a higher potential to form biofilms. A biofilm is a group of microorganisms which adhere to a surface. We ... -
Biogenesis, biologic function and clinical potential of exosomes in different diseases
(MDPI, 2020)Exosomes are extracellular vesicles (EVs) belonging to the nanovesicles family that function as signaling molecules between cells. After their first description in the late 1960s, interest in their potential as a research ... -
Bioimaging of Pb and STIM1 in mice liver, kidney and brain using Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) and immunohistochemistry
(Elsevier, 2020)Lead (Pb) pollution is one of the most serious environmental problems and has attracted worldwide attention. Pb causes hematological, central nervous system, as well as renal toxicity, and so on. Although many investigations ... -
A bioinformatics pipeline for rare genetic diseases in South African patients
(ASSAf, 2019)The research fields of bioinformatics and computational biology are growing rapidly in South Africa. Bioinformatics pipelines play an integral part in handling sequencing data, which are used to investigate the aetiology ... -
Biological activity of traditional medicinal plants used against lymphatic filariasis in the eastern Free State
(Elsevier, 2017)For centuries medicinal plants have been used for treatment of various diseases. Most frequently, the majority of people in the eastern Free State depend on traditional medicinal plants for their daily health care due to ... -
Biological control of the root-knot nematode Meloidogyne incognita on tomatoes and carrots by plant growth-promoting rhizobacteria
(Springer, 2019)In the current study 27 plant growth-promoting rhizobacteria (PGPR) strains were screened for biocontrol activity against Meloidogyne incognita on 6-week old carrot seedlings that were inoculated with a suspension of J2 ... -
Biological crusts of serpentine and non-serpentine soils from the Barberton Greenstone Belt of South Africa
(Springer, 2017)Climate and geography can influence biological soil crust (BSC) community composition, but local heterogeneity in variables such as soil characteristics or microclimate gradients can also impact cryptogamic diversity. Heavy ... -
Biological toxicity estimates show involvement of a wider range of toxic compounds in sediments from Durban, South Africa than indicated from instrumental analyses
(Elsevier, 2018)The toxic equivalences (TEQs) of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) from sediment of aquatic systems in Durban, South Africa were determined in two ways: 1) TEQs of PAHs and PCBs ... -
Biological, ionizing and ultraviolet radiation and electrochemical degradation of chlorpyrifos pesticide in aqueous solutions
(ESG, 2014)Laboratory experiments were carried out on the effect of the electrochemical degradation, biological removal, ultraviolet and ionizing radiation of chlorpyrifos (O,O-Diethyl O-3,5,6-trichloropyridin-2-yl phosphorothioate) ... -
Biology and performance of two indigenous larval parasitoids on Tuta absoluta (Lepidoptera: Gelechiidae) in Sudan
(Taylor & Francis, 2018)Tuta absoluta is an alien invasive pest in Sudan. Since it was detected in the country, the pest continues to cause major tomato losses. Alarmed by its devastating nature and the speed of spread, tomato growers resorted ... -
Biomarker responses in the freshwater shrimp Caridina nilotica as indicators of persistent pollutant exposure
(Springer, 2020)Biomarkers are applied as early warning indicators of organisms’ exposure to pollutants. The aim of this study was to utilise a multi-biomarker approach in the freshwater shrimp Caridina nilotica (Decapoda: Atyidae) as ... -
Biomarkers in tigerfish (Hydrocynus vittatus) as indicators of metal and organic pollution in ecologically sensitive subtropical rivers
(Elsevier, 2018)Studies have shown high levels of contamination of both metals and organochlorine pesticides (OCPs) in aquatic systems of the world renowned Kruger National Park, South Africa. With effects evident in top predators, ...