Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 4844-4855 of 4855
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X-ray and gamma-ray polarization in leptonic and hadronic jet models of blazars
(IOP Science, 2013)We present a theoretical analysis of the expected X-ray and γ-ray polarization signatures resulting from synchrotron self-Compton emission in leptonic models compared to the polarization signatures from proton synchrotron ... -
X-ray and gamma-ray variability of NGC 1275
(MDPI, 2020)Gamma-ray emission from the bright radio source 3C 84, associated with the Perseus cluster, is ascribed to the radio galaxy NGC 1275 residing at the centre of the cluster. Study of the correlated X-ray/gamma-ray emission ... -
X-ray polarimetry with the Polarization Spectroscopic Telescope Array (PolSTAR)
(Elsevier, 2016)This paper describes the Polarization Spectroscopic Telescope Array (PolSTAR), a mission proposed to NASA’s 2014 Small Explorer (SMEX) announcement of opportunity. PolSTAR measures the linear polarization of 3–50 keV ... -
Xenobiotic/medium chain fatty acid: CoA ligase - a critical review on its role in fatty acid metabolism and the detoxification of benzoic acid and aspirin
(Taylor & Francis, 2016)Introduction: Activation of fatty acids by the acyl-CoA synthetases (ACSs) is the vital first step in fatty acid metabolism. The enzymatic and physiological characterization of the human xenobiotic/medium chain fatty acid: ... -
Xenopus laevis as UberXL for nematodes
(Taylor & Francis, 2020)The effect of invasive species on local parasite dynamics is often overlooked. The African Clawed Frog Xenopus laevis (Daudin, 1802) (Anura: Pipidae) is a global invader, with established populations on four continents and ... -
The y-ray spectrum of the core of Centaurus A as observed with H.E.S.S. and Fermi-LAT
(EDP Sciences, 2018)Centaurus A (Cen A) is the nearest radio galaxy discovered as a very-high-energy (VHE; 100 GeV–100 TeV) γ-ray source by the High Energy Stereoscopic System (H.E.S.S.). It is a faint VHE γ-ray emitter, though its VHE flux ... -
Zooplankton and diatoms of temporary and permanent freshwater pans in the Mpumalanga Highveld region, South Africa
(Taylor & Francis, 2014)This paper provides a description of the zooplankton and epiphytic diatom communities of permanent and temporary freshwater pans in the Mpumalanga Highveld region of South Africa. Few studies have investigated the biota ... -
Zooplankton composition of temporary pools within the lower Nata River channel, Botswana, during dry season
(Taylor & Francis, 2020)The Nata River is a seasonal system situated in the semi-arid north-eastern Botswana, where rainfall is unpredictable and drought is common. The annual flow of approximately 279 million cubic meters is regionally significant ... -
α-Pyridinyl alcohols, α,α’-pyridine diols, α-bipyridinyl alcohols, and α,α’-bipyridine diols as structure motifs towards important organic molecules and transition metal complexes
(Bentham, 2020)Background: The preparation and use of pyridinyl alcohols as ligands showed incredible increment in the past three decades. Important property of pyridinyl alcoholato ligands is their strong basicity, which is mainly due ... -
The α2C-adrenoceptor antagonist, ORM-10921, has antipsychotic-like effects in social isolation reared rats and bolsters the response to haloperidol
(Elsevier, 2016)Early studies suggest that selective α2C-adrenoceptor (AR)-antagonism has anti-psychotic-like and pro-cognitive properties. However, this has not been demonstrated in an animal model of schizophrenia with a neurodevelopmental ... -
β-carotene and retinol contents in the meat of herbivorous ungulates with a special reference to their public health importance
(Japanese Society of Veterinary Science, 2016)The aim of this study was to estimate total carotenoids, β-carotene and retinol concentrations in the livers and muscles of some ungulates (cattle, buffalo, sheep, goats and horses) in comparison with the Wistar rats as a ...
