Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 378-397 of 4825
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Automation of membrane based solvent extraction unit for Zr and Hf separation
(Elsevier, 2017)In recent years, research into metal ion solvent extraction using hollow fibre membranes has grown. Current studies generally use an analogue controlled experimental setup. Although the analogue system is sufficient for ... -
Avian interspecific differences in VKOR activity and inhibition: insights from amino acid sequence and mRNA expression ratio of VKORC1 and VKORC1L1
(Elsevier, 2020)Worldwide use of anticoagulant rodenticides (ARs) for rodents control has frequently led to secondary poisoning of non-target animals, especially raptors. In order to suggest some factors that may help considering the ... -
The awakening of BL Lacertae: observations by Fermi, Swift and the GASP-WEBT
(Oxford University Press, 2013)Since the launch of the Fermi satellite, BL Lacertae has been moderately active at γ-rays and optical frequencies until 2011 May, when the source started a series of strong flares. The exceptional optical sampling achieved ... -
Bacillus pumilus strain YSPMK11 as plant growth promoter and bicontrol agent against Sclerotinia sclerotiorum
(Springer, 2017)A study was executed in a direction to attenuate Sclerotinia stalk rot (SSR) disease through biocontrol agent and also to enhance crop productivity. Culture filtrate of bacterial strain YSPMK11 inhibited growth of Sclerotinia ... -
Bacillus-based bionematicides: development, modes of action and commercialisation
(Taylor & Francis, 2018)Agricultural crops are severely damaged by root-knot nematodes causing extensive financial losses globally. Historically, agrochemicals have been the preferred method to combat these pests; however, threats to humans and ... -
Bacterial community composition of an urban river in the North West Province, South Africa, in relation to physico-chemical water quality
(Springer, 2016)The aim of this study was to determine the impacts of anthropogenic disturbances on bacterial community composition in an urban river (Mooi River). Physico-chemical analysis, bacterial enumeration and 454-pyrosequencing ... -
Bacterial diversity and mycotoxin reduction during maize fermentation (steeping) for ogi production
(Frontiers Research Foundation, 2015)Bacterial diversity and community structure of two maize varieties (white and yellow) during fermentation/steeping for ogi production, and the influence of spontaneous fermentation on mycotoxin reduction in the gruel were ... -
Bacterial pathogens identified from houseflies in different human and animal settings : a systematic review and meta‐analysis.
(Elsevier, 2022)Housefly (Musca domestica) is an excellent candidate for the distribution of susceptible and resistant bacterial strains that potentially threaten public health. To date, there is a paucity of information on the global ... -
Bacterial species and mycotoxin contamination associated with locust bean, melon and their fermented products in south-western Nigeria
(Elsevier, 2017)The microbiological safety of spontaneously fermented foods is not always guaranteed due to the unde fi ned fermenting microbial consortium and processing materials. In this study, two commonly consumed traditional condiments ... -
Balance of RNA sequence requirement and NS3/NS3a expression of segment 10 of orbiviruses
(Microbiology Society, 2016)Orbiviruses are insect-transmitted, non-enveloped viruses with a ten-segmented dsRNA genome of which the bluetongue virus (BTV) is the prototype. Viral non-structural protein NS3/NS3a is encoded by genome segment 10 ... -
Bank valuation and its connections with the subprime mortgage crisis and basel II capital accord
(Hindawi Publishing Corporation, 2008)The ongoing subprime mortgage crisis (SMC) and implementation of Basel II Capital Accord regulation have resulted in issues related to bank valuation and profitability becoming more topical. Profit is a major indicator of ... -
Banking regulations: an examination of the failure of African Bank using Merton’s structural model
(AOSIS, 2017)The business of banking involves the taking of deposits and the making of loans. Banking balance sheets are typically highly leveraged, with equity capital generally dwarfed by debt capital. Banks are ... -
Baroreceptor sensitivity, cardiovascular responses and ECG left ventricular hypertrophy in men: the SABPA study
(Taylor & Francis, 2011)Aim. Research has shown a significant relationship between hypertension and attenuated baroreceptor sensitivity (BRS), which in turn reflects alterations of autonomic control of the cardiovascular system. The objective of ... -
Baseline bio-accumulation concentrations and resulting oxidative stress in Synodontis zambezensis after an acute laboratory exposure to 4,4′-DDT
(Elsevier, 2019)The use of 1,1′-(2,2,2-Trichloro-1,1-ethanediyl)bis(4-chlorobenzene) (DDT) as a pesticide for the control of insects vectors responsible for the spread of many life threatening diseases was officially banned in 1972 by the ... -
Baseline status of microbial activity on gold tailings facilities in South Africa
(Elsevier, 2018)In many ways, South Africa’s landscape has been dominated by mining, given that, for so many years this sector has been the mainstay of the South African economy. As such the environmental impacts of these mining activities ... -
Basic characteristics of atmospheric particles, trace gases and meteorology in a relatively clean Southern African Savannah environment
(EGU, 2008)We have analyzed one year (July 2006–July 2007) of measurement data from a relatively clean background site located in dry savannah in South Africa. The annualmedian trace gas concentrations were equal to 0.7 ppb for SO2, ... -
Batrachochytrium dendrobatidis in amphibians of Cameroon, including first records for caecilians
(Inter Research, 2013)Amphibian chytrid fungus Batrachochytrium dendrobatidis (Bd) has been hypothesised to be an indigenous parasite of African amphibians. In Cameroon, however, previous surveys in one region (in the northwest) failed to ... -
Bayesian inference for radio observations
(Oxford University Press, 2015)New telescopes like the Square Kilometre Array (SKA) will push into a new sensitivity regime and expose systematics, such as direction-dependent effects, that could previously be ignored. Current methods for handling such ... -
Bäcklund transformation, multiple wave solutions and lump solutions to a (3 + 1)-dimensional nonlinear evolution equation
(SpringerSpringer, 2017)In this paper, a (3+1)-dimensional nonlinear evolution equation is cast into Hirota bilinear form with a dependent variable transformation. A bilinear Bäcklund transformation is then presented, which consists of six bilinear ... -
Beetroot juice is more beneficial than sodium nitrate for attenuating muscle pain after strenuous eccentric-bias exercise
(Canadian Science Publishing, 2017)The aim of this study was to compare the effects of beetroot juice (BTJ) and a nitrate only drink (sodium nitrate; SN) on indices of exercise-induced muscle damage (EIMD). Thirty recreationally active males consumed either ...