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Now showing items 261-270 of 274
Reconstructing the deep-branching relationships of the papilionoid legumes
(Elsevier, 2013)
Resolving the phylogenetic relationships of the deep nodes of papilionoid legumes (Papilionoideae) is essential to understanding the evolutionary history and diversification of this economically and ecologically important ...
Population ecology of Psammobates oculifer in a semi-arid environment
(Taylor & Francis and UNISA Press, 2013)
We studied the ecology of Psammobates oculifer over 13 months near Kimberley, South Africa, to ascertain if the population’s life history traits conform to chelonian patterns in arid environments. Capture rates were highest ...
Towards ensuring scalability, interoperability and efficient access control in a multi-domain grid-based environment
(South African Institute of Electrical Engineers, 2013)
The application of grid computing has been hampered by three basic challenges:
scalability, interoperability and efficient access control which need to be optimized before a full-scale
adoption of grid computing can take ...
The Herschel* view of the environment of the radio galaxy 4C+41.17 at z = 3.8
(Oxford University Press, 2013)
We present Herschel observations at 70, 160, 250, 350 and 500 μm of the environment of the
radio galaxy 4C+41.17 at z = 3.792. About 65 per cent of the extracted sources are securely
identified with mid-infrared sources ...
Is millennium development goal 4 achievable in Tanzania?
(WB Saunders, 2013)
Introduction: This paper will focus on MDG4, which is concerned with
reducing child mortality. Childhood mortality rates are the
leading indicator of the level of child health and overall
development of a country; and ...
The association between gender and tooth loss in a small rural population of South Africa
(Science Publishing Group, 2013)
Periodontal disease, which attacks the gums and supporting structures of the tooth, is one of the major causes
of tooth loss in adults. Few studies on general well-being have compared the differences in oral health between ...
Female preference for blue in Japan blue guppies (Poecilia reticulata)
(Springer Verlag, 2013)
Guppies (Poecilia reticulata) are widely used as a model species in mate choice studies. Although native to South America, guppies have been introduced to natural water bodies in disparate regions of the globe. Here, for ...
Self-maintaining or continuously refreshed? The genetic structure of Euphausia lucens populations in the Benguela upwelling ecosystem
(Oxford University Press, 2013)
Populations of Euphausia lucens over the shelf of the southern Benguela upwelling
region could be self-maintaining. Alternatively, they could be continually refreshed
by expatriates from the SWAtlantic that enter the ...
Is human immunodeficiency virus (HIV) stage an independent risk factor for altering the periodontal status of HIV-positive patients? A South African study
(BMC, 2013)
The immunosuppresion in HIV patients makes them highly susceptible to microbial infections. The
aim of the study was to establish whether HIV stage (as depicted by CD4+ T lymphocyte counts) could
independently be associated ...
The effectiveness of sewage treatment processes to remove faecal pathogens and antibiotic residues
(TAYLOR & FRANCIS INC, 2013)
Pathogens and antibiotics enter the aquatic environment via sewage effluents and may pose a health risk to wild life and humans.The aim of this study was to determine the levels of faecal bacteria, and selected antibiotic ...