Browsing Research Output by Title
Now showing items 9943-9962 of 13364
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Quantification of oxygen capture in mineral matter during gasification
(Elsevier, 2008)It has been observed that during the transformation of minerals at higher temperatures (>1000 °C), mineral species are formed containing a high number of oxygen molecules, i.e. gehlenite (Ca2Al2SiO7), mullite (Al6Si3O15), ... -
Quantification of systemic renin-angiotensin system peptides of hypertensive black and white African men established from the RAS-Fingerprint
(Sage, 2016)Objective: The objective of this study was to make use of a quantitative and qualitative approach comparing the systemic renin-angiotensin system (RAS) of hypertensive black and white African men by using RAS equilibrium ... -
Quantifying savanna woody cover in the field and on historical imagery: a methodological analysis
(AJOL, 2014)The proliferation of woody vegetation on open grass savannas constitutes degradation in rangeland quality. Historical high spatial resolution satellite imagery in archive provides possibilities for assessing increase in ... -
Quantifying the effect of air quality offsets on household air pollution and thermal comfort on the South Africa Highveld
(NACA, 2020)South Africa, like other developing countries, has been facing air quality challenges. As a highly industrialised country, industrial emissions both from power generations and mining activities contribute significantly ... -
Quantifying the woody component of savanna vegetation along a density gradient in the Kalahari Bushveld: a comparison of two adapted point-centered quarter methods
(CSIRO Publishing, 2014)Bush encroachment is a serious problem in savanna rangelands of southern Africa. There is a strong interest in practical and reliable assessment methods to quantify related vegetation changes in the woody layer such as the ... -
A quantitative assessment of cell-free DNA utilizing several housekeeping genes: measurements from four different cell lines
(Springer, 2016)Quantitative real-time PCR (qPCR) is regularly used to quantify cell-free nucleic acids (cfNAs) in order to identify biomarkers for various pathologies. However, studies have shown notable housekeeping gene expression ... -
Quantitative determination of octadecenedioic acid in human skin and transdermal perfusates by gas chromatography-mass spectrometry.
(Oxford Univ Press, 2008)A gas chromatographic (GC) method with mass spectrometric (MS) detection is developed and validated for the accurate and precise determination of octadecenedioic acid (C18:1 DIOIC) in human skin samples and transdermal ... -
Quantitative elucidation of maternal-to-fetal transfer of neonicotinoid pesticide clothianidin and its metabolites in mice
(Elsevier, 2020)Neonicotinoids (NNs), a widely used class of systemic pesticides, are regarded as exhibiting selective toxicity in insects. However, NNs are suspected of exerting adverse effects on mammals as well, including humans. To ... -
Quantitative hippocampal structural changes following elctroconvulsive seizure treatment in a rat model of depression
(Wiley, 2012)Objective: The pathophysiology of depression and the effects of antidepressant treatment are hypothesized to be related to hippocampal structural changes. This study aims to investigate the effect of electroconvulsive ... -
Quantitative metabolomics of a xylose-utilizing Saccharomyces cerevisiae strain expressing the Bacteroides thetaiotaomicron xylose isomerase on glucose and xylose
(Springer, 2017)The yeast Saccharomyces cerevisiae cannot utilize xylose, but the introduction of a xylose isomerase that functions well in yeast will help overcome the limitations of the fungal oxido-reductive pathway. In this study, a ... -
A quantitative model to evaluate post-implementation efficiency of Scrum
(IOS Press, 2010)In order to improve the information system development process many companies have adopted system development methodologies. Various evaluation methods and frameworks exist in the literature to assist companies during their ... -
The quantity of dark matter in early-type galaxies and its relation to the environment
(Oxford Univ Press, 2019)We study the behaviour of the dynamical and stellar mass inside the effective radius of early-type galaxies (ETGs) as a function of environment considering Newtonian dynamics, different surface-brightness profiles, different ... -
Quartz exposure in agriculture: literature review and South African survey
(Oxford Univ Press, 2010)Objectives: To review the published literature on respirable quartz exposure and associated disease in agricultural related settings systematically and to describe personal respirable dust and quartz measurements collected ... -
Quasi-metric trees and q-hyperconvex hulls
(Scientific and Technological Research Council of Turkey, 2017)The investigation of metric trees began with J. Tits in 1977. Recently we studied a more general notion of quasi-metric tree. In the current article we prove, among other facts, that the q-hyperconvex hull of a q-hyperconvex ... -
Quasi-periodic wave solutions and two-wave solutions of the KdV-Sawada-Kotera-Ramani equation
(SpringerSpringer, 2017)The two-wave solutions of the KdV–Sawada–Kotera–Ramani equation are studied in this paper. By reducing this high-order wave equation into two associated solvable ordinary differential equations, we derive the two-wave ... -
The quest for sustainable firm value
(Studia Universitatis, 2010) -
A quest for the best: talent management as strategic priority
(Oxford University Press, 2008) -
The question is not whether to promote or not to promote, but rather when to promote
(Taylor & Francis, 2012)The Klein Karoo National Arts Festival (KKNK) is one of South Africa's largest and most popular arts festivals. The success of the festival is dependent on the number of tickets sold. Therefore, in order to ensure an ... -
Questioning the context of corporate performance measures in bechmarking CEO compensation
(Corporate Ownership & Control, 2015)The purpose of the study was to reflect on existing practices in studying the CEO pay performance issue, with special reference to the context wherein the financial performance measurements were employed. In total, an ...