Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 95-114 of 4818
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Acute changes in haematocrit leading to polycythaemia in late-onset hypogonadism patients that receive testosterone replacement therapy: a South African study
(Taylor & Francis, 2019)Background: According to the literature, parenteral testosterone replacement therapy (TRT)-induced polycythaemia is associated with cardiovascular events. No or minimal data exist for the prevalence of TRT-induced ... -
Acute exposure to environmentally relevant lead levels induces oxidative stress and neurobehavioral alterations in larval zebrafish (Danio rerio)
(Elsevier, 2020)The ubiquitous contamination of environmental lead (Pb) remains a worldwide threat. Improper Pb mine waste disposal from an abandoned lead-zinc mine has recently unearthed widespread Pb poisoning in children in Kabwe Zambia. ... -
Acute toxicity of double-walled carbon nanotubes to three aquatic organisms
(Hindawi Publishing Corporation, 2015)This study investigated the toxicity of double walled carbon nanotubes (DWCNTs) to three aquatic organisms, namely, Pseudokirchneriella subcapitata, Daphnia pulex, and Poecilia reticulata under the influence of exposure ... -
Adaptation to damaging dance and repeated-sprint activity in women
(Wolters Kluwer, 2016)he repeated bout effect (RBE) refers to the prophylactic effect from damaging exercise after a single previous bout of exercise. There is a paucity of data examining the RBE in women, and investigations using exercise ... -
Adaptations in corticospinal excitability and inhibition are not spatially confined to the agonist muscle following strength training
(Springer, 2017)Purpose We used transcranial magnetic stimulation (TMS) to determine the corticospinal responses from an agonist and synergist muscle following strength training of the right elbow flexors. Methods Motor-evoked potentials ... -
Adapting mobile medical information search to low-resourced areas
(IST-Africa, 2013)Providing good medical care in low-resourced areas is a challenge faced by many low and middle income countries. Continuously improving mobile communication infrastructure in these areas is however providing the opportunity ... -
Adapting the Macaulay duration for defaultable and option-embedded bonds
(Faculty of Economic and Management Sciences, University of Pretoria., 2008)Most contemporary bonds have embedded options and all face the possibility of default. Both features introduce risk (the former market risk and the latter credit risk) by altering the quantity and timing of the promised ... -
Adapting the singular spectrum analysis trajectory matrix technique to identify multiple additive time-series outliers
(Bureau for Economic Research and the Graduate School of Business, University of Stellenbosch., 2015)Singular spectrum analysis is a powerful non-parametric time series method that unfolds an observed time series into a special structured matrix, called a trajectory matrix. The trajectory matrix has a Hankel structure, ... -
Adaptive search and selection of domain ontologies for reuse on the semantic web
(Academy Publisher, 2013)Ontology plays an important role in Semantic Web applications. However, building ontology remains challenging due to the time, cost an effort required. Several studies have proposed the reuse of existing ontologies when ... -
Addendum to “Process development for elemental recovery from PGM tailings by thermochemical treatment: preliminary major element extraction studies using ammonium sulphate as extracting agent” [Waste Manage. 50 (2016) 334–345]
(Elsevier, 2017)In a recent paper, a promising two-stage process for the extraction of major elements from Platinum Group Metals (PGM) was presented (Mohamed et al., 2016). This process involved solid-solid thermochemical treatment of ... -
Addition of a new insect parasitic nematode, Oscheius tipulae, to Iranian fauna
(ONTA, 2018)On behalf of an ongoing project on diversity of insect pathogenic and insect parasitic nematodes of Iran, a new species was collected and characterized. This species was collected in soil from the Mashhad, Arak, and Mahalat ... -
Addressing multi-language diversity in mathematics teacher education programs
(Springer, 2016)In this chapter, mathematics teacher educators (MTEs) from two different environments, namely South Africa (RSA) and the United States (US), join together to share our insights on the role that MTEs might play in the ... -
Addressing the total human being: work-integrated learning for ICT student
(IADIS Press, 2013)Information and communication technology (ICT) is essential to the operation of business, and create many employment opportunities. High volumes of students graduate in ICT however students struggle to find job placement. ... -
Adjustments to the preanalytical phase of quantitative cell-free DNA analysis
(Elsevier, 2016)Evaluating the kinetics of cell-free DNA (cfDNA) in the blood of cancer patients could be a strong auxiliary component to the molecular characterization of cfDNA, but its potential clinical significance is obscured by the ... -
An administrative justice perspective on improving EIA effectiveness
(Taylor & Francis, 2020)The aim of this letter is to provide an administrative justice perspective on EIA effectiveness. EIA is described as essentially an administrative instrument, reflecting a number of principles that revolve around an ... -
The adoption of m-commerce applications: rural dwellers’s perspectives
(IADIS, 2019)In recent years, mobile applications (mobile apps) have gained widespread acceptance. Mobile apps services have effectively encircled most of the human activities, with the purpose of improving the living standard of the ... -
Adsorption and corrosion inhibition properties of N-{n-[1-R-5-(quinoxalin-6-yl)-4,5-dihydropyrazol-3-yl]phenyl}methanesulfonamides on mild steel in 1 M HCl: experimental and theoretical studies
(Royal Society of Chemistry, 2016)Six quinoxalinyl-dihydropyrazolyl-phenyl-methanesulfonamides were investigated for their adsorption characteristics and inhibition of mild steel corrosion in 1 M HCl medium. Tafel polarization measurements revealed that ... -
Adsorption and corrosion inhibition studies of some selected Dyes as corrosion inhibitors for mild steel in acidic medium: gravimetric, electrochemical, quantum chemical studies and synergistic effect with Iodide Ions
(MDPI, 2015)The corrosion inhibition properties of some organic dyes, namely Sunset Yellow (SS), Amaranth (AM), Allura Red (AR), Tartrazine (TZ) and Fast Green (FG), for mild steel corrosion in 0.5 M HCl solution, were investigated ... -
Adsorption behavior of glucosamine-based, pyrimidine-fused heterocycles as green corrosion inhibitors for mild steel: experimental and theoretical studies
(American Chemical Society, 2016)Effects of electron donating (−CH3 and −OH) and electron withdrawing (−NO2) substituents on the corrosion inhibition efficiency of four glucosamine-based, substituted, pyrimidine-fused heterocycles (CARBs) on mild steel ...