Browsing Natural and Agricultural Sciences by Title
Now showing items 225-244 of 2707
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Background ambient atmospheric mercury concentrations for the South African interior
(North-West University (South Africa), 2021)Atmospheric mercury (Hg) pollution is a global health concern. Once emitted into the atmosphere, gaseous elemental mercury (Hg0) can be converted to highly reactive gaseous oxidised mercury (Hg2+), which is deposited to ... -
Background Radioactivity in the North West Province
(North-West University (South Africa), 2001)The unavailability of the background radioactivity baseline data of the North West province for the various geological units is a problem from the radiation protection point of view. The regulation of the nuclear industry ... -
Bacterial communities associated with the surface of sweet pepper and their selection for biocontrol
(North-West University (South Africa), 2021)Biocontrol agents (especially, microbial antagonists) can sustainably and effectively protect yield losses in crops. In sweet peppers (Capsicum annum), one of the most nutritionally rich fruit crop, widely grown worldwide, ... -
Bacterial diversity of South African soils
(North-West University (South Africa), 2020)The soil is an essential part of the environment as it provides support for life which comprises microorganisms, plants, animals and humanity. Ecosystem services such as nutrient cycling, food production and temperature ... -
Bacteriocinogeny in Proteus vulgaris
(University of Pretoria, 1967)One hundred and eighteen different strains of Proteus vulgaris were investigated for bacteriocinogeny. These P. vulgaris strains were also used a s indicators. Seventy of the 118 strains produced zones of inhibition when ... -
Bacteriophage levels and associated characteristics in selected temperate water systems
(North-West University (South Africa), Potchefstroom Campus, 2017)Bacteriophages are studied in an effort to establish the viral safety of water as well as gather information as to what source of faecal pollution is dominant in a water system. The aim of this study was to determine ... -
Bacteroides species as indicators of faecal pollution in environmental water sources : a literature review
(North-West University (South Africa), 2019)Faecal pollution of water has long been an issue of great concern due to the potential health risks associated with faeces. A lack of understanding the implications of sewage contamination in water combined with inadequate ... -
Bank loan pricing and profitability and their connections with Basel II and the subprime mortgage crisis
(North-West University, 2008)A topical issue in financial economics is the development of appropriate stochastic dynamic models for banking items and behavior. The issue here is to fulfill the need to generalize the more traditional discrete-time ... -
Barriers and opportunities to the implementation of a zero waste to landfill goal – a platinum mining case study
(North-West University (South Africa), 2022)According to Kaza et al (2018:18), the global amount of waste generated on an annual basis has reached 2.01 billion tonnes, with only 30% being diverted away from landfill through re-use, recycling, composting or incineration. ... -
Base-line susceptibility of Busseola fusca for Bt maize in South Africa
(North-West University (South Africa), 2015)Genetically modified maize that express insecticidal proteins (Bt proteins) have been commercialized in South Africa for the control of Busseola fusca (Lepidoptera: Noctuidae). Busseola fusca has been reported to be ... -
Baseline assessment of the density and diversity of birds around Matimba and Medupi power station
(North-West University, 2015)Bird populations are changing at unprecedented rates in response to human-induced changes to the global environment, and these rates of change are expected to accelerate over the coming decades. Changes in the levels of ... -
Basis of host recognition by the larval endoparasitoids : Cotesia sesamiae Cameron and Cotesia flavipes (Cameron) (Hymenoptera : Braconidae)
(North-West University, 2009)Host recognition behaviour of two braconid larval parasitoids Cotesia sesamiae and Cotesia flavipes was studied using suitable stemborer hosts [i.e. Busseola fusca for C. sesamiae, and Chilo partellus for C. flavipes] and ... -
Batrachochytrium dendrobatidis survey in Ncandu Nature Reserve and fungal ecology
(North-West University (South Africa), 2023)Amphibians across the globe have been experiencing rapid declines, especially in areas with a high amphibian population density. It was assumed that this decline was caused by habitat destruction and climate change. A ... -
The "beautification of schools" campaign as an environmental management tool
(North-West University, 2004)The aim of this study was to evaluate the "beautification of schools" programme as an environmental management tool with a view to facilitating the improvement thereof wherever necessary. An in-depth literature review on ... -
The behaviour of potassium and sodium species during the thermal treatment of a demineralized Highveld coal
(North-West University, 2011)A series of experiments was conducted to investigate the potential influence of pre- and post adding of catalysts to a demineralized coal char. The catalysts were chosen according to yield better catalytic activity and be ... -
The behavioural ecology of the Orange–Vaal River yellowfish in lentic and lotic ecosystems, North–West Province, South Africa
(North-West University, 2013)Fishes are widely used by biologist as ecological indicators that measure key elements of complex systems, without having to capture the full complexity of a specific system. The Vaal River in South Africa is classified ... -
A behavioural study of fission products released into the helium coolant of the PBMR with special emphasis on Fresco-II and Spatra codes
(North-West University (South Africa), 2001)The fission products release rates into the helium coolant for the PBMR reactor, and their plate-out (sedimentation) were numerically calculated. These were done using the well known FRESCO-II and SPATRA codes respectively ... -
Behavioural threshold analysis in the context of information security
(North-West University (South Africa), 2021)The human aspect in information security provides a unique challenge for its assessment and management. Many studies seek to address this challenge by employing psychological models to understand the behaviour of individuals ... -
Die beheer van urinêre skistosoominfeksie in mense in 'n geselekteerde nedersetting in die Limpopo Provinsie van Suid-Afrika deur die gebruik van gesondheidsopvoeding
(North-West University, 2005)Health education was implemented as a means of control of urinary schistosomiasis in this study. Pupils in the four to nine and 10 to 14 year age-groups respectively received information regarding the disease by means of ... -
Benchmarking IT service regions
(North-West University, 2008)Productivity and efficiency are the tools used in managing performance. This study researches and implements best practices that lead to best performance. A customer quality defined standard has to be created by benchmarking ...