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Now showing items 51-60 of 78
A calibration neutron monitor for long-term cosmic ray modulation studies
(North-West University, 2006)
The propagation of high-energy cosmic rays is influenced by the time-varying heliospheric
magnetic field embedded in the solar wind, and by the geomagnetic field. To penetrate
through this geomagnetic field, they must ...
The use and effectiveness of systems development methodologies in South Africa
(North-West University, 2006)
This study investigates the use and effectiveness of systems development methodologies in practice.
Systems development methodologies are defined as the totality of systems development approaches,
process models, methods ...
Reproductive biology of the African clawed frog, Xenopus laevis
(North-West University, 2006)
Apart from the mouse, rat, and chicken, the clawed frog, Xenopus laevis, is probably the best-studied chordate laboratory animal. Although this animal has been studied for decades around the world we still know relatively ...
The detection and molecular characterisation of Shiga Toxigenic Escheria coli (STEC) O157 strains from humans, cattle and pigs in the North-West Province, South Africa
(North-West University (South Africa), 2006)
The prevalence and antibiotic resistant profiles of shiga-toxin producing Escherichia
coli O 157 strains isolated from faeces samples of cattle, pigs and human stool samples
were determined. The strains were further ...
An interpretive analysis of systems development methodology adaptation in South Africa
(North-West University, 2006)
According to recent surveys on the use of systems development methodologies, many organizations claim that they are adapting systems development methodologies (Hardy et al. 1995; Russo et al. 1996; Fitzgerald, 1998). The ...
The effect of pre-ozonation on the physical characteristics of raw water and natural organic matter (NOM) in raw water from different South African water resources
(North-West University, 2006)
Research in the use of ozone in water treatment conducted by many authors support the idea that the nature and characteristics of natural organic matter (NOM) present in raw water determines the
efficiency of ozonation ...
Development of a recombinant antigen for the detection of antibodies against Rift Valley fever virus in humans and animals
(North-West University, 2006)
Rift Valley fever (RVF) is a mosquito-borne zoonotic disease endemic to Africa that presents a significant health threat to both humans and animals. Outbreaks have serious economical implications. Two facts
cause concern. ...
Evaluation and verification of resistance in selected vegetable crops for sustainable root-knot nematode management in developing agriculture
(North-West University, 2006)
Root-knot nematodes, (Meloidogyne species) are a major constraint in vegetable production systems. These parasites cause high yield losses, particularly in subsistence farming systems. This study was conducted to establish ...
Re-defining the aspects of transport safety regulations (TS-R-1) for the transport of bulk material
(North-West University (South Africa), 2006)
Transport of radioactive material is an essential activity worldwide. Both safety
and security during transport are matters of international importance. The
IAEA Safety Standard (ST-R-1) has been adopted worldwide for ...
Synthesis characterization and kinetic studies of metal porphyrazines
(North-West University (South Africa), 2006)
The symmetrical 2,3,7,8,12,13,17,18-octakis (propyl) porphyrazine magnesium, Mg-pz1, was prepared from maleonitrile via Linstead's template cyclization. The free base, Pz1 -base and centrally metallated new
compounds, ...