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Now showing items 71-80 of 1517
The efficacy of abamectin in reducing plant-parasitic nematodes in cotton
(North-West University, 2010)
Cotton production is worldwide hampered by infection of various pests and diseases, including plant-parasitic nematodes (PPN). Root-knot nematodes (RKN), in particular Meloidogyne incognita race 4 is the predominant nematode ...
An assessment of corporate environmental reporting performance and its alignment to environmental management systems in a South African gold mining company
(North-West University, 2013)
Corporate Social Environmental Reporting is a process through which companies and organisations can inform the societies within which they operate about their performance on non-economic issues including environmental ...
Air quality in the Johannesburg–Pretoria megacity : its regional influence and identification of parameters that could mitigate pollution
(North-West University, 2012)
A megacity is generally defined as a city that, together with its suburbs or recognised metropolitan area, has a total population of more than 10 million people. Air pollution in megacities is a major concern due to large ...
On the development and applications of a three–dimensional ab initio cosmic–ray modulation model
(North-West University, 2012)
A proper understanding of the effects of turbulence on the diffusion and drift of cosmic-rays in the heliosphere is imperative for a better understanding of cosmic-ray modulation. This study
presents an ab initio model ...
A search for optical counterparts of the complex Vela X system
(North-West University (South Africa) , Potchefstroom Campus, 2012)
The pulsar wind nebula (PWN) associated with the Vela pulsar, Vela X, is a complex system
visible in radio, X-ray and y-ray wavelengths, but not in the optical wavelength. Knowledge
of the brightness and structure of the ...
A study of the early DNA methylation events in oxidative stressed cultured mammalian cells
(North-West University, 2012)
Cells are continuously exposed to reactive oxygen species (ROS) causing oxidative stress. Cells can withstand and counteract ROS using defence mechanisms which range from free radical scavengers, antioxidant enzymes and ...
On the mechanism of homogeneous alkene metathesis : a computational study
(North-West University, 2012)
A mechanism for alkene metathesis has been proposed by Chauvin, wherein metal carbenes act as catalysts for the reaction. The use and discovery of Fischer-, Tebbe-, Grubbs- and Schrock-type metal carbenes have to a certain ...
Heart rate and systolic blood pressure response to workload during an incremental sub–maximal exercise test in healthy individuals
(North-West University, 2012)
Healthcare practitioners, whom perform accurate sub-maximal exercise tests in healthy individuals, need to understand the physiological demands and normal cardiovascular (CV) responses with exercise. Exercise testing ...
Applying tree knapsack approaches to general network design : a case study
(North-West University, 2010)
There are many practical decision problems that fall into the category of network flow problems: numerous examples of applications can be found in areas such as telecommunications, logistics, distributions, engineering, ...
The application of near infrared reflectance spectroscopy in the nutritional assessment of tree leaves as potential protein supplements for ruminants
(2015)
This study was executed to calibrate and validate near infrared reflectance spectroscopy (NIRS) for use in predicting chemical composition, buffer nitrogen (N) solubility, in vitro ruminal dry matter (DM) and nitrogen (N) ...