Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 1597-1616 of 4825
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Evaluating three commonly used growth media for assessing fumonisin analogues FB1, FB2 and FB3 production by nine Fusarium verticillioides isolates
(Taylor & Francis, 2017)Maize is most often infected by the fumonisin-producing Fusarium verticillioides. Total fumonisins of natural infected grain is made up of FB1, FB2 and FB3 with FB1 occurring naturally at higher levels. A maize plant can ... -
Evaluation of analytical assays efficiency to detect aflatoxin M1 in milk from selected areas in Egypt and South Africa
(Elsevier, 2015)Recently, methods to analyze aflatoxin M1 (AFM1) in milk and dairy products have been developed for both screening purposes (i.e., rapid, economical, and simple methods) and for confirmation by accurate, reproducible, and ... -
Evaluation of antibiotic residues in raw meat using different analytical methods
(MDPI, 2017)Antibiotic residue in meat is a serious public health concern due to its harmful effects on consumer health. This study aimed at estimating the residue levels of four commonly used antibiotics in meat samples using three ... -
Evaluation of charge density and the theory for calculating membrane potential for a nano-composite nylon-6,6 nickel phosphate membrane
(RSC, 2012)A new crystalline organic–inorganic nano-composite nylon-6,6 nickel phosphate membrane was synthesised subsequent to which (a) the physico-chemical characteristics of the membrane were evaluated employing FTIR, SEM, EDX, ... -
Evaluation of climate model aerosol seasonal and spatial variability over Africa using AERONET
(EGU, 2017)The sensitivity of climate models to the characterization of African aerosol particles is poorly understood. Africa is a major source of dust and biomass burning aerosols and this represents an important research gap in ... -
Evaluation of covalently and ionically cross-linked PBI-excess blends for application in SO2 electrolysis
(Elsevier, 2015)Proton exchange membranes (PEM) containing various combinations of PPOBr (pol(2,6-dimethylbromide-1,4-phenylene oxide, covalently cross-linked) or PWN (poly(tetrafluorostyrene-4-phosphonic acid), ionically cross-linked) ... -
Evaluation of fungicides for potential growth regulating properties on sorghum
(Elsevier, 2017)Fungicidal compounds such as triazoles and strobilurins have been shown to have plant growth regulating properties leading to, amongst others, delayed senescence or increased yield. The aim of the current study was to ... -
Evaluation of gross alpha and beta activity concentration in five vital organs of some goats
(Elewa Biosciences, 2016)The objective of this study was to evaluate the gross alpha and gross beta activity concentrations in five vital organs (kidney, heart, lungs, liver and tongue) and dung from some twenty-five goats obtained from Turaku ... -
Evaluation of isolated fractions of aloe vera gel materials on indinavir pharmacokinetics: in vitro and in vivo studies
(Bentham Science, 2016)Aloe vera is a plant with a long history of traditional medicinal use and is consumed in different products, sometimes in conjunction with prescribed medicines. A. vera gel has shown the ability to modulate drug absorption ... -
Evaluation of larviposition site selection of Glossina brevipalpis
(Elsevier, 2016)Tsetse species (Diptera: Glossinidae) are vectors of trypanosome parasites which cause disease in both humans and livestock. In South Africa Glossina austeni Newstead, 1912 and G. brevipalpis Newstead, 1911 are responsible ... -
Evaluation of MEA manufacturing parameters using EIS for SO2 electrolysis
(Elsevier, 2014)Membrane electrode assembly (MEA) manufacturing parameters such as hot pressing pressure and pressing time were investigated for the use in a SO2 electrolyser. The SO2 electrolysis was optimised in terms of cell temperature, ... -
Evaluation of mineral matter transformations in low-temperature ashes of South African coal feedstock samples and their density separated cuts using high-temperature X-ray diffraction
(Taylor & Francis, 2020)Coal mineral matter is the leading cause of inevitable ash problems (fouling and slagging) during the combustion of coal. Low-temperature ash (LTA) samples of feed coals and the density separated fractions were subjected ... -
Evaluation of models generated via hybrid evolutionary algorithms for the prediction of Microcystis concentrations in the Vaal Dam, South Africa
(Water Research Commission, 2016)Cyanobacteria are responsible for many problems in drinking water treatment works (DWTW) because of their ability to produce cyanotoxins that potentially can have an adverse effect on consumer health. Therefore, the ... -
Evaluation of organic matter stability in wood compost by chemical and thermogravimetric analysis
(University of Tehran (Graduate Faculty of Environment), 2012)This study investigated maturation and stability levels during composting of Quercus robur (QR) woodchips mixed with different nitrogen sources (horse manure, HM and lake mud, LM) for potential agronomic utilisation. The ... -
Evaluation of polycrystalline platinum and rhodium surfaces for the electro-oxidation of aqueous sulfur dioxide
(Springer, 2016)Polycrystalline Rh and Pt were studied to ascertain their electrocatalytic activity for the electro-oxidation of SO2, an important reaction in sulfur dioxide depolarized electrolyzers used to produce hydrogen. Cyclic ... -
Evaluation of relationships between results of electrocardiography and echocardiography in 341 chimpanzees (Pan troglodytes)
(AVMA, 2020)OBJECTIVE To examine potential relationships between ECG characteristics and echocardiographic measures of cardiac structure in chimpanzees (Pan troglodytes). ANIMALS 341 chimpanzees (175 males and 166 females) from 5 ... -
Evaluation of repellent properties of some plants used in Venda and Tsonga Ethnoveterinary Medicine
(Kamla-Raj, 2016)Tick infestations are second to worm infestation among ethnoveterinary indications and plants constitute the majority of remedies used in their management in Vhembe District, South Africa. The aim of the study was to ... -
Evaluation of resistance and tolerance of rice genotypes from crosses of Oryza glaberrima and O. sativa to the rice root-knot nematode, Meloidogyne graminicola
(Springer, 2018)Resistance and tolerance to Meloidogyne graminicola infection of introgressed rice genotypes derived from crosses between M. graminicola-resistant Oryza glaberrima genotype CG14 and -susceptible O. sativa genotype IR64 ... -
An evaluation of supramaximally loaded eccentric leg press exercise
(Wolters Kluwer, 2018)High-intensity eccentric exercise is a potent stimulus for neuromuscular adaptation. A greater understanding of the mechanical stimuli afforded by this exercise will aid the prescription of future eccentric training regimens. ... -
Evaluation of the antioxidative potential of diisopropyldithiocarbamates sodium salt on diclofenac-induced toxicity in male albino rats
(Elsevier, 2022)Diclofenac (DIC) is a non-steroidal anti-inflammatory drug (NSAID) which is known to induce oxidative stress. Dithiocarbamates are compounds with proven antioxidant effect. The aim of the present study was to investigate ...