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Now showing items 1-20 of 155
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A Cayley-Hamilton trace identity for 2 × 2 matrices over Lie-solvable rings
(2012-01-18)First we construct an algebra satisfying the polynomial identity [[x,y],[u,v]]=0, but none of the stronger identities [x,y][u,v]=0 and [[x,y],z]=0. Then we exhibit a Cayley-Hamilton trace identity for 2×2 matrices with ...
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A mathematical modelling approach to assessing the reliability of biomarkers of glutathione metabolism
(2011-10-13)One of the main pathways for the detoxification of reactive metabolites in the liver involves glutathione conjugation. Metabolic profiling studies have shown paradoxical responses in glutathione-related biochemical pathways. ...
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A new antigen scanning strategy for monitoring HIV-1 specific T-cell immune responses
(2012-01-18)Delineation of the immune correlates of protection in natural infection or after vaccination is a mandatory step for vaccine development. Although the most recent techniques allow a sensitive and specific detection of the ...
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A Note on the Five Lemma
(2011)
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A practical equation of state for non-spherical and asymmetric systems for application at high pressures. Part 2: Extension to mixtures
(2011-10-13)In part I of this series the pure component PHCT-DNSK equation of state (EOS) was presented. In this paper the EOS is extended to describe mixtures, particularly asymmetric mixtures containing one or more low molecular ...
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A well-tested set of primers to amplify regions spread across the avian genome
(2011-05-15)[No abstract available]
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Accelerated skeletal muscle recovery after in vivo polyphenol administration
(2012-02-15)Acute skeletal muscle damage results in fiber disruption, oxidative stress and inflammation. We investigated cell-specific contributions to the regeneration process after contusion-induced damage (rat gastrocnemius muscle) ...
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Acute and sublethal effects of sequential exposure to the pesticide azinphos-methyl on juvenile earthworms (Eisenia andrei)
(2011)The use of organophosphate pesticides is an integral part of commercial farming activities and these substances have been implicated as a major source of environmental contamination and may impact on a range of non-target ...
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An analytical pore-scale, shear stress model for purely viscous non-Newtonian fluids traversing porous media
(2011-10-13)An analytical model for incompressible, generalized Newtonian fluids traversing different types of porous media is proposed. This model is based on the volume averaging of the governing equations. Interstitial quantities ...
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An effective fabrication method for ultra thin aluminum structures
(2011-10-13)In this paper we discuss the various effects on resistivity of thin metal films, concluding that grain boundary scattering and the material's electron-mean-free-path are the dominant factors. We also present an effective ...
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An experimental evaluation of the leaching kinetics of PGM-containing Ni-Cu-Fe-S Peirce Smith converter matte, under atmospheric leach conditions
(2011-05-15)In a first stage atmospheric leach in a typical Sherritt Ni-Cu matte leach process, a Ni-Cu-Fe-S Peirce Smith converter matte is contacted with recycled copper spent electrolyte (an aqueous copper sulphate/sulphuric acid ...
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An Investigation into the Influence of Socioeconomic Variables on Gestational Body Mass Index in Pregnant Women Living in a Peri-Urban Settlement, South Africa
(2011)Maternal and child mortality rates are still unacceptably high in South Africa. The health status of women in peri-urban areas has been influenced by political and socio-economic factors. Examining socio-economic variables ...
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An ultrastructural investigation of the surface microbiota present on the leaves and reproductive structures of the resurrection plant Myrothamnus flabellifolia
(2011-05-15)The leaves, flower and stems of the southern African angiosperm resurrection plant Myrothamnus flabellifolia were investigated at the ultrastructural level to determine the source of previously reported fungal contamination. ...
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Analytical techniques for wine analysis : an African perspective; a review
(2012-02-22)Analytical chemistry is playing an ever-increasingly important role in the global wine industry. Chemical analysis of wine is essential in ensuring product safety and conformity to regulatory laws governing the international ...
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Antibodies reactive to Plasmodium falciparum serine repeat antigen in children with Burkitt lymphoma from Ghana
(2011-10-13)The role of protective immunity to Plasmodium falciparum (Pf) malaria in Burkitt lymphoma (BL) is unknown. We investigated the association between BL and antibodies reactive to SE36 antigen, a recombinant protein based on ...
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Application of spatial resource data to assist in farmland valuation
(2012-01-18)A land transaction is generally not a recurring action for most buyers and sellers their experience and knowledge are limited for this reason the services of property agents and valuers are sometimes used just to get ...
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Are linear measurements and computerized volumetric ratios determined from axial MRI useful for diagnosing hydrocephalus in children with tuberculous meningitis?
(2011)Purpose: This study aimed to evaluate linear measurements and computerized volumetric ratios on axial magnetic resonance imaging (MRI) scans against the diagnosis of hydrocephalus in children with tuberculous meningitis ...