Browsing Research Output by Title
Now showing items 2979-2998 of 13381
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The development process of an axial active magnetic bearing
(2005)The purpose of this paper is to motivate and inspire students to investigate and understand fundamental principles of electrical engineering such as magnetic levitation, control theory and sensor design. This paper describes ... -
The development, validation and standardisation of a questionnaire for ICT professional development of mathematics teachers
(AOSIS, 2015)This article reports on the development of a custom-made questionnaire. The questionnaire was developed with the aim to compile guidelines for the professional development (PD) of mathematics teachers for the pedagogical ... -
Developmental monitoring using caregiver reports in a resource-limited setting: The case of Kilifi, Kenya
(Wiley-Blackwell, 2010)Aim: The main aim of the current study was to evaluate the reliability, validity and acceptability of developmental monitoring using caregiver reports among mothers in a rural African setting. Methods: A structured ... -
Developmetrics. The satisfaction with life scale: measurement invariance across immigrant groups
(Taylor & Francis, 2013)The current study examined measurement invariance of the Satisfaction With Life Scale (SWLS; Diener, Emmons, Larsen, & Griffin, 1985) across three immigrant groups, namely, immigrants from the Former Soviet Union (FSU) in ... -
DFT + U studies of the electronic and optical properties of ReS2 mono-layer doped with lanthanide atoms
(IOP Publishing, 2019)The structural, electronic and optical properties of various elements in the lanthanide series as dopant atoms in the triclinic mono-layered rhenium disulphide (ReS2) structure was evaluated using density functional theory ... -
A DFT computational study of phosphine ligand dissociation versus hemilability in a Grubbs-type precatalyst containing a bidentate ligand during alkene metathesis
(Taylor & Francis, 2008)Using density functional theory, the metathesis reaction of 1-octene in the presence of a Grubbs-type ruthenium alkylidene complex bearing a chelating pyridinyl alcoholate ligand, [RuCl(L)(O∧ N)( = CHPh)] (L = H2IMes or ... -
DFT investigation of the 1-octene metathesis reaction mechanism with the Phobcat precatalyst
(Springer, 2009)The productive self-metathesis reaction of 1-octene in the presence of the Phobcat precatalyst [RuCl2(Phoban-Cy)2(=CHPh)] using density functional theory was investigated and compared to the Grubbs 1 precatalyst ... -
DFT modelling of tantalum pentafluoride extraction with phosphorus-based extractants – a molecular dynamics study
(Elsevier, 2019)Solvent extraction (SX) is a powerful method for both the separation and extraction of metals, resulting in high purity metals. The transition metals tantalum (Ta) and niobium (Nb) are of considerable significance, for ... -
DFT plus U studies of the electronic and optical properties of ReS2 mono-layer doped with lanthanide atoms
(IOP, 2019)The structural, electronic and optical properties of various elements in the lanthanide series as dopant atoms in the triclinic mono-layered rhenium disulphide (ReS2) structure was evaluated using density functional theory ... -
DFT–based QSAR Study of Substituted Pyridine–Pyrazole Derivatives as Corrosion inhibitors in Molar Hydrochloric Acid
(ESG, 2014)Quantum chemical calculations, based on DFT methods at B3LYP/6-31G** level of theory, were performed, by means of the G03 set of programs, on four pyridine-pyrazole compounds. The objective of this work was ... -
Diabetes in South African older adults: prevalence and impact on quality of life and functional disability – as assessed using SAGE Wave 1 data
(Taylor & Francis, 2018)Background: Diabetes is a chronic disease with severe late complications. It is known to impact the quality of life and cause disability, which may affect an individual’s capacity to manage and maintain longer-term health ... -
Diabetes mellitus and comorbid depression in Zambia
(Wiley-Blackwell, 2015)Aims To replicate, in Zambia, a recent global study by the WHO, which reported that the odds of depression were not increased in African people with diabetes, and to explore the sociodemographic and clinical factors ... -
Diachronic changes in modality in South African English
(John Benjamins Publishing, 2012)In this paper we aim to contribute to both the synchronic and diachronic description of the grammar of South African English (SAfE) in its written register. In the handful of previous studies on the variety’s grammar (e.g. ... -
Diachronic changes in modality in South African English
(John Benjamins Publishing, 2012)In this paper we aim to contribute to both the synchronic and diachronic description of the grammar of South African English (SAfE) in its written register. In the handful of previous studies on the variety’s grammar (e.g. ... -
Diagnosing emerging fungal threats: a one health perspective
(Frontiers Media, 2018)Emerging fungal pathogens are a growing threat to global health, ecosystems, food security, and the world economy. Over the last century, environmental change and globalized transport, twinned with the increasing application ... -
Diagnosing relativistic particle acceleration in AGN jets
(AIP, 2017)Mildly relativistic, oblique shocks are generally considered to be among the most plausible sites of relativistic particle acceleration and the subsequent production of strongly variable, polarized multi-wavelength emission ... -
A diagnostic biomarker profile for fibromyalgia syndrome based on an NMR metabolomics study of selected patients and controls
(BioMed Central, 2017)Background: Fibromyalgia syndrome (FMS) is a chronic pain syndrome. A plausible pathogenesis of the disease is uncertain and the pursuit of measurable biomarkers for objective identification of affected individuals is a ... -
Diagnostic DIVA tests accompanying the Disabled Infectious Single Animal (DISA) vaccine platform for African horse sickness
(Elsevier, 2018)African Horse Sickness Virus (AHSV) (Orbivirus genus, Reoviridae family) causes high mortality in naïve domestic horses with enormous economic and socio-emotional impact. There are nine AHSV serotypes showing limited cross ... -
Diagnostic tests for the distribution of random effects in multivariate mixed effects model
(Taylor & Francis, 2016)Fourier methods are proposed for testing the distribution of random effects in classical and robust multivariate mixed effects models. The test statistics involve estimation of the characteristic function of random effects. ... -
Diakonia: in conversation with John N. Collins
(Brill Academic Publishers, 2017)The work of John N. Collins on the διάκον- word group makes an important contribution to understanding church ministry. Although it receives much attention and support, there is some criticism of Collins’s exegesis. If his ...