Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 3550-3569 of 4825
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Prevention of biofilm formation by methacrylate-based copolymer films loaded with rifampin, clarithromycin, doxycycline alone or in combination
(Springer, 2015)Purpose This study reports the incorporation of the antibiotics rifampin, doxycycline and clarithromycin in poly(styrene-co-methyl methacrylate films and their effect on biofilm prevention. Background Invasive procedures ... -
Pre–emptive national monitoring plan for detecting the amphibian chytrid fungus in Madagascar
(Springer Link, 2013)No Abstract available -
Pricing contingent convertible bonds in African banks
(AOSIS, 2016)In times of financial distress, banks struggle to source additional capital from reluctant private investors. Sovereign bailouts prevent disruptive insolvencies, but distort bank incentives. Contingent convertible capital ... -
Pricing of single stock futures and dividend risk
(Investement Analyst Society of South Africa, 2011)In this paper we consider the fair pricing of single stock futures (SSFs) and the effect of dividend risk on the dividend compensation component in the pricing formulas. SSF valuation is subject to the pricing of discrete ... -
Primary factors identified in sport science students' coaching philosophies : sport education and community involvement
(AFAHPER-SDLAM PublicationsAJOLSabinet, 2014)Youth sport coaches have a great influence on the experiences and development of children who participate in organized sport. Given this influence of coaches on children and the huge participation numbers of children in ... -
Primary particle acceleration above 100 TeV in the shell-type supernova remnant RX J1713.7-3946 with deep H.E.S.S. observations (Corrigendum to article: Primary particle acceleration above 100 TeV in the shell-type supernova remnant RX J1713.7-3946 with deep HESS observations, 464(1):235-243.)
(EDP Sciences, 2011)Primary particle acceleration above 100 TeV in the shell-type supernova remnant RX J1713.7-3946 with deep H.E.S.S. observations (Corrigendum) -
A primer on counterparty valuation adjustments in South Africa
(University of Pretoria, 2014)Counterparty valuation adjustment (CVA) risk accounts for losses due to the deterioration in credit quality of derivative counterparties with large credit spreads. Of the losses attributed to counterparty credit risk ... -
Priming the motor cortex with anodal transcranial direct current stimulation affects the acute inhibitory corticospinal responses to strength training
(Wolters Kluwer, 2019)Synaptic plasticity in the motor cortex (M1) is associated with strength training (ST) and can be modified by transcranial direct current stimulation (tDCS). The M1 responses to ST increase when anodal tDCS is applied ... -
Prior experience, cognitive perceptions and psychological skills of senior South African rugby players
(Stellenbosh University, 2010) -
Prioritizing agricultural pesticides used in South Africa based on their environmental mobility and potential human health effects
(Elsevier, 2014)South Africa is the largest user of pesticides in sub-Saharan Africa and many studies have highlighted the occurrence of pesticides in water resources. Poor management of water treatment facilities in combination with a ... -
The probability weighted characteristic function and goodness-of-fit testing
(Elsevier, 2014)We introduce the notion of the probability weighted characteristic function (PWCF) as a generalization of the characteristic function. Some of the properties of the PWCF and of its empirical counterpart are studied and the ... -
Probing acceleration and turbulence at relativistic shocks in blazar jets
(Oxford Univ Press, 2017)Diffusive shock acceleration (DSA) at relativistic shocks is widely thought to be an important acceleration mechanism in various astrophysical jet sources, including radio-loud active galactic nuclei such as blazars. Such ... -
Probing cluster environments of blazars through γγ absorption
(EDP Sciences, 2015)Most blazars are known to be hosted in giant elliptic galaxies, but their cluster environments have not been thoroughly investigated. Cluster environments may contain radiation fields of low-energy photons created by nearby ... -
Probing factors influencing students’ graph comprehension regarding four operations in kinematics graphs
(Taylor & Francis, 2017)Students’ graph comprehension may be affected by the background of the students who are the readers or interpreters of the graph, their knowledge of the context in which the graph is set, and the inferential processes ... -
Probing millisecond pulsar emission geometry using light curves from the Fermi/Large Area Telescope
(IOP Publishing, 2009)An interesting new high-energy pulsar sub-population is emerging following early discoveries of gamma-ray millisecond pulsars (MSPs) by the Fermi Large Area Telescope (LAT). We present results from three-dimensional emission ... -
Probing millisecond pulsar emission geometry using light curves from the fermi/large area telescope
(IOP Publishing, 2009)An interesting new high-energy pulsar sub-population is emerging following early discoveries of gamma-ray millisecond pulsars (MSPs) by the Fermi Large Area Telescope (LAT). We present results from three-dimensional emission ... -
Probing molecular interactions between ammonium-based ionic liquids and N,N-Dimethylacetamide: a combined FTIR, DLS, and DFT Study
(American Chemical Society, 2016)The present study investigates the effects of the alkyl chain length of the cationic head-group of some ammonium-based ionic liquids (ILs) (having the same anion) on the interaction between the ILs and N,N-dimethylacetamide ... -
Probing some theoretical aspects of practitioner-based inquiry research in Information Systems
(ACM Press, 2010)Information and Communication Technologies (ICT) practitioners are often located in the social sciences branch of Information Systems (IS). Practitioner research comprises of research that practitioners undertake with a ... -
Probing the ATIC peak in the cosmic-ray electron spectrum with H.E.S.S.
(EDP Sciences, 2009)The measurement of an excess in the cosmic-ray electron spectrum between 300 and 800 GeV by the ATIC experiment has – together with the PAMELA detection of a rise in the positron fraction up to ≈ 100 GeV – ...