The aim of the thesis is to derive group invariant, exact, approximate analytical and numerical solutions for a two-dimensional laminar, non-Newtonian pre-existing hydraulic fracture propagating in impermeable and permeable ...

HIV/AIDS is prevalent among adolescent youth in South Africa particularly among adolescent girls. Numerous efforts have been made to contain the pandemic through HIV prevention information in schools and through community ...

A unique Raman spectroscopic investigation combining a number of different techniques has been conducted in situ on the composition of the passive film on iron, both during its growth in 0.05 M NaOH by potentiodynamic ...

Globalisation, aided by rapid improvements in technology has given rise to an industry where services can be delivered quickly and cost effectively from remote parts of the world. Driven primarily by the need to reduce ...

Exocrine pancreatic insufficiency (EPI) is a major complication of cystic fibrosis. Conventional treatment involves the replacement of pancreatic enzymes and intake of a low fat diet. However, contrary to previous ...

Abstract The National Water Act (No. 36 of 1998) requires Ecological Reserves to be determined in order to protect the aquatic ecosystems of the water resources. Instream Flow Requirements (FRs) were established to ...

Abstract Understanding the role of elephant in the structure and functioning of African savanna ecosystems requires a mechanistic understanding of their habitat and diet selection at the landscape scale. To this end a ...

Three arachnid species, the rock scorpion Hadogenes gunningi, the burrowing scorpion Opistophthalmus pugnax and the baboon spider Harpactira hamiltoni have been identified as species of conservation interest for inclusion ...

Relationships between occurrence of a species and features of habitats occupied are central to establish factors that influence its distribution. Within large protected areas extinction processes may cause retractions of ...