Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 414-433 of 4825
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The Bézout equation on the right half-plane in a Wiener space setting
(Springer, 2017)This paper deals with the Bézout equation G(s)X(s)=Im,Rs≤0, in the Wiener space of analytic matrix-valued functions on the right halfplane. In particular, G is an m × p matrix-valued analytic Wiener function, where p ≥ m, ... -
Bias and variance reduction procedures in non-parametric regression
(SASA, 2016)The purpose of this study is to determine the effect of three improvement methods on nonparametric kernel regression estimators. The improvement methods are applied to the Nadaraya-Watson estimator with cross-validation ... -
Bias corrections of global models for regional climate simulations of high-impact weather
(Springer, 2014)All global circulation models (GCMs) suffer from some form of bias, which when used as boundary conditions for regional climate models may impact the simulations, perhaps severely. Here we present a bias correction method ... -
Biases during DNA extraction affect bacterial and archaeal community profile of anaerobic digestion samples
(Springer, 2017)The anaerobic digestion (AD) of organic waste for biogas production has received much attention in recent years due to the increasing need for renewable energy and environmentally friendly waste management systems. ... -
A bimodal pollination system enhances reproductive potential of translocated populations of an endangered grassland succulent
(AOSIS, 2019)A major concern during the translocation of higher plant species is related to habitat suitability and the availability of pollination services. Should these not meet the requirements of the plant, then successful reproduction ... -
Binary Darboux transformation for the coupled Sasa-Satsuma equations
(AIP Publishing, 2017)The binary Darboux transformation method is applied to the coupled Sasa-Satsuma equations, which can be used to describe the propagation dynamics of femtosecond vector solitons in the birefringent fibers with third-order ... -
Bio-oil production from sweet sorghum bagasse via liquefaction using alkaline solutions and identification of phenolic products
(Springer, 2020)The feasibility of converting biomass into bio-oil and the effect of an alkaline treatment during biomass liquefaction was studied. Sweet sorghum bagasse (SSB) was treated with NaOH concentrations of 0.5, 1.0, 3.0 and 6.0 ... -
Bioaccessibility and risk assessment of essential and non-essential elements in vegetables commonly consumed in Swaziland
(Elsevier, 2017)The green leafy vegetables (Mormodica involucrate, Bidens pilosa and Amaranthus spinosus) are economic; seasonal; locally grown and easily available; easy to propagate and store; highly nutritious food substances that form ... -
Bioaccumulation and human health risk assessment of DDT and other organochlorine pesticides in an apex aquatic predator from a premier conservation area
(Elsevier, 2016)With the second highest gross domestic product in Africa, South Africa is known to have a high pesticide usage, including the highly persistent and banned group of organochlorine pesticides (OCPs). South Africa is also one ... -
Bioaccumulation and metal-associated biomarker responses in a freshwater mussel, Dreissena polymorpha, following short-term platinum exposure
(Elsevier, 2019)Due to the increasing presence of platinum (Pt) in the environment, the caveat arises to identify its toxic potential in species at risk of being exposed – especially those found in aquatic environments where pollutants ... -
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 ...