Institutional Repository | North-West University | NWU: Recent submissions
Now showing items 8641-8660 of 35800
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Comparison of in vitro and computational experiments on the relation of inter-beat interval and duration of repolarization in a specific type of human induced pluripotent stem cell-derived cardiomyocytes
(PLoS, 2019)We compared a published computational model of the action potential of a specific type of human induced pluripotent stem cell -derived cardiomyocytes (hiPSC-CM) with experimental field potential data with regard to their ... -
Maternal iron-deficiency is associated with premature birth and higher birth weight despite routine antenatal iron supplementation in an urban South African setting: the NuPED prospective study
(PLoS, 2019)Background Recent studies are suggesting a U-shaped relationship between antenatal iron exposure and birth outcomes. Little is known about the iron status and associated birth outcomes of pregnant women in South Africa. ... -
Rasch analysis of the Satisfaction with Life Scale across countries: findings from South Africa and Italy
(Springer, 2019)The Satisfaction with Life Scale (SWLS) is widely used to assess global satisfaction with life. Although the scale’s psychometric properties were extensively investigated through different methods, Rasch analysis can provide ... -
Correction to: Heart rate variability, the dynamic nature of the retinal microvasculature and cardiac stress: providing insight into the brain–retina–heart link: the SABPA study
(Springer, 2020)Correction to: Eye https://doi.org/10.1038/s41433-019-0515-y Since the online publication of this article, the authors have noticed that the conclusion to the abstract contains an error. The correct abstract conclusion ... -
Compound maximal motor unit response is modulated by contraction intensity, but not contraction type in tibialis anterior
(Wiley, 2019)Determining a single compound maximal motor response (MMAX) or an average superimposed MMAX response (MSUP) are commonly used reference values in experiments eliciting raw electromyographic, motor evoked potentials, ... -
Artemisia afra, a controversial herbal remedy or a treasure trove of new drugs?
(Elsevier, 2019)Ethnoparmacological relevance Artemisia afra is one of the most widely used herbal remedies in South Africa. This highly aromatic shrub is used to treat various disorders including coughs, colds, influenza, and malaria. ... -
Efficient removal of Pb(II) and Cd(II) from industrial mine water by a hierarchical MoS2/SH-MWCNT nanocomposite
(ACS, 2019)In this study, we investigate the adsorption capability of molybdenum sulfide (MoS2)/thiol-functionalized multiwalled carbon nanotube (SH-MWCNT) nanocomposite for rapid and efficient removal of heavy metals [Pb(II) and ... -
Production of citric acid from the fermentation of pineapple waste by Aspergillus niger
(Bentham Open, 2019)Background: Citric acid, aside its uses as a cleaning agent, has varied applications in the chemical, pharmaceutical, and food industries. A biotechnological fermentation process is one of the easiest ways to satisfy the ... -
Progress in the development of methods used for the abatement of microbial contaminants in ethanol fermentations: a review
(Springer, 2019)Biofuel research and development roadmap is currently underway in several countries and is expected to pave a way for the establishment of a viable renewable energy sector that can compete with petroleum-based fuels. Ethanol ... -
Development of a Pt/stainless steel mesh catalyst and its application in catalytic hydrogen combustion
(Elsevier, 2019)In this paper, different methods to prepare a Pt/stainless steel mesh catalyst for catalytic hydrogen combustion are reported. Pt was deposited as a thin layer onto stainless steel mesh as a support matrix. Thermal treatment ... -
Sub-arcsecond (sub)millimeter imaging of the massive protocluster G358.93−0.03: discovery of 14 new methanol maser lines associated with a hot core
(IOP Publishing, 2019)We present (sub)millimeter imaging at 0farcs5 resolution of the massive star-forming region G358.93−0.03 acquired in multiple epochs at 2 and 3 months following the recent flaring of its 6.7 GHz CH3OH maser emission. Using ... -
Cascading constraints from neutrino-emitting blazars: the case of TXS 0506+056
(IOP Publishing, 2019)We present a procedure to generally constrain the environments of neutrino-producing sites in photomeson production models of jetted active galactic nuclei (AGNs) where any origin of the dominant target photon field can ... -
Current sheets, magnetic islands, and associated particle acceleration in the solar wind as observed by Ulysses near the ecliptic plane
(IOP Publishing, 2019)Recent studies of particle acceleration in the heliosphere have revealed a new mechanism that can locally energize particles up to several MeV nucleon–1. Stream–stream interactions, as well as the heliospheric current sheet ... -
Enabling green and blue infrastructure to improve contributions to human well-being and equity in urban systems
(Oxford Univ Press, 2019)The circumstances under which different ecosystem service benefits can be realized differ. The benefits tend to be coproduced and to be enabled by multiple interacting social, ecological, and technological factors, which ... -
On the financial interpretation of risk contributions: an analysis using Quantile Simulation
(Taylor & Francis, 2019)This paper tests whether the financial interpretation of risk contributions (Qian, 2006), as measured by marginal change in volatility, holds when accounting for fat tails in the asset return distributions. This important ... -
On some characterizations and multidimensional criteria for testing homogeneity, symmetry and independence
(Elsevier, 2019)We propose three new characterizations and corresponding distance-based weighted test criteria for the two-sample problem, and for testing symmetry and independence with multivariate data. All quantities have the common ... -
Molecular modelling of tantalum fluoride in sulphuric acid medium: a DFT study
(Elsevier, 2019)During the solvent extraction (SX) experiments of tantalum (Ta) and niobium (Nb), the aqueous phase consisted of tantalum- and niobium penta-fluoride (Ta(Nb)F5), water (H2O) and sulphuric acid (H2SO4), which was contacted ... -
Morphological and morphometrical identification of Meloidogyne populations from various crop production areas in South Africa with emphasis on M. enterolobii
(Magnolia Press, 2019)Accurate identification of Meloidogyne spp. is crucial and the first step to apply suitable management strategies to combat these nematode pests. Perineal-pattern morphology of female specimens is one of the most common ... -
Ambient particulate air pollution and daily mortality in 652 cities
(Massachusetts Medical Society, 2019)BACKGROUND The systematic evaluation of the results of time-series studies of air pollution is challenged by differences in model specification and publication bias. METHODS We evaluated the associations of inhalable ... -
Challenging the universality of job resources: why, when, and for whom are they beneficial?
(Wiley, 2020)In this paper we introduce the topic of job resources and elaborate on their relevance for research and practice in work psychology. We start out with a brief overview of the historic and current understanding of job ...
