Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 1905-1924 of 4825
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Gamma‐ray pulsar visibility
(AIP, 2005)PSR J0437‐4715 is a millisecond pulsar (MSP) thought to be “pair formation starved” (having limited pair cascades due to magnetic photon absorption). Fortunately the general relativistic (GR) electrodynamical model under ... -
Garden ecosystem services of Sub-Saharan Africa and the role of health clinic gardens as social-ecological systems
(Elsevier, 2018)Rapid urbanization is predicted to take place in Africa in the near future and currently stressed cities will be even more overburdened in terms of pressure on green areas and increasing urban poverty. Effectively planning ... -
Gas chemical adsorption characterization of lanthanide hexafluoroacetylacetonates
(SpringerSpringer, 2017)Newly-established adsorption enthalpy and entropy values of 12 lanthanide hexafluoroacetylacetonates, denoted Ln[hfac]4, along with the experimental and theoretical methodology used to obtain these values, are presented ... -
Gas chromatography-mass spectrometry profiles of urinary organic acids in healthy captive cheetahs ( Acinonyx jubatus )
(Elsevier, 2017)In captivity, cheetahs (Acinonyx jubatus) frequently suffer from several unusual chronic diseases that rarely occur in their free-ranging counterparts. In order to develop a better understanding of their metabolism and ... -
Gas crossover mitigation in PEM water electrolysis: hydrogen cross-over benchmark study of 3M's Ir-NSTF based electrolysis catalyst-coated membranes
(ECS, 2016)In this work we present some preliminary data, such as permeability (gas crossover) of oxygen and hydrogen as a function of current density and other operational variables, aimed at establishing baselines for unmitigated ... -
The GC-MS metabolomics signature in patients with fibromyalgia syndrome directs to dysbiosis as an aspect contributing factor of FMS pathophysiology
(Springer, 2019)Introduction Fibromyalgia syndrome (FMS) is a chronic pain syndrome. Previous analyses of untargeted metabolomics data indicated altered metabolic profile in FMS patients. Objectives We report a semi-targeted explorative ... -
GC-MS-based urinary organic acid profiling reveals multiple dysregulated metabolic pathways following experimental acute alcohol consumption
(Nature, 2018)Metabolomics studies of diseases associated with chronic alcohol consumption provide compelling evidence of several perturbed metabolic pathways. Moreover, the holistic approach of such studies gives insights into the ... -
Gearing up impact assessment as a vehicle for achieving the UN sustainable development goals
(Taylor & Francis, 2020)This article reflects on the potential for impact assessment (IA) to be a major vehicle for implementing the UN Sustainable Development Goals (SDGs). While it is acknowledged that the SDGs are intended to deliver broader ... -
Gemini observations of galaxies in rich early environments (GOGREEN) I: survey description
(Oxford Univ Press, 2017)We describe a new Large Program in progress on the Gemini North and South telescopes: Gemini Observations of Galaxies in Rich Early Environments (GOGREEN). This is an imaging and deep spectroscopic survey of 21 galaxy ... -
Gender considerations in sustainable rural livelihood planning: engendering rural development planning in a South African context
(WIT Press, 2019)While it may be argued that worldwide women in rural areas are more likely to experience poverty than rural men and urban men and women, it is an even greater challenge for Africa. The impoverishment experienced by the ... -
Gender differences related to the health and lifestyle patterns of university students
(AOSIS [OpenJournals Publishing/ © 2009. The Authors. Licensee: OpenJournals Publishing. This work is licensed under the Creative Commons Attrib], 2013)One of the transitions from adolescence to adulthood is the admission of students to a university setting. Accompanying this transition is a new-found independence which results in university students having more autonomy ... -
Gender effects on self-regulation among university students
(Taylor & Francis, 2012)The aim of this study was to explore the relation between self-regulation, psychopathology and gender amongst a group of South African university students (N=384). Self-regulation was measured with the Shortened Self-Regulation ... -
Gender-based yoga for conflict resolution
(The Social Sciences Research Society, 2016)Organisations are taking proactive measures to manage conflict and intra-level competition through employee wellness programmes, emphasizing the use of yoga for developing harmonious relationships and positive behavioural ... -
Gene-environment and gene-gene interactions of specific MTHFR, MTR and CBS gene variants in relation to homocysteine in a black South Africans
(Elsevier, 2013)The methylenetetrahydrofolate reductase (MTHFR), cystathione-β-synthase (CBS) and methionine synthase (MTR) genes interact with each other and the environment. These interactions could influence homocysteine (Hcy) and ... -
General overview: European integrated project on Aerosol Cloud Climate and Air Quality Interactions (EUCAARI): integrating aerosol research from nano to global scales
(EGU, 2011)In this paper we describe and summarize the main achievements of the European Aerosol Cloud Climate and Air Quality Interactions project (EUCAARI). EUCAARI started on 1 January 2007 and ended on 31 December 2010 leaving a ... -
A general result on the uniform in bandwidth consistency of kernel-type function estimators
(Springer, 2010)We develop a general theorem to prove the uniform in bandwidth consistency of kernel-type function estimators. This method unifies the approaches in some other recent papers. We show how to apply our results to kernel ... -
A general time-dependent stochastic method for solving Parker's transport equation in spherical coordinates
(American Geophysical Union, 2010) -
A generalized additive neural network application in information security
(Tadbir Operational Research Group, 2014)Traditionally spam has been considered as an inconvenience requiring workers to sift through and delete large numbers of e-mail messages per day. However, new developments and the Internet have dramatically transformed the ... -
Generalized copula-graphic estimator
(Springer, 2013)In this paper, a copula-graphic estimator is proposed for censored survival data. It is assumed that there is some dependent censoring acting on the variable of interest that may come from an existing competing risk. ... -
A generalized diffusion tensor for fully anisotropic diffusion of energetic particles in the heliospheric magnetic field
(IOP Publishing, 2012)The spatial diffusion of cosmic rays in turbulent magnetic fields can, in the most general case, be fully anisotropic, i.e., one has to distinguish three diffusion axes in a local, field-aligned frame. We reexamine the ...