Browsing Natural and Agricultural Sciences by Title
Now showing items 2038-2057 of 2738
-
Pair programming and underrepresented groups in Information Technology in South Africa
(North-West University (South Africa), 2022)It is troubling that in a nation where the lion's share of the population is made up of Black South Africans, they are the minority within the IT industry. Furthermore, the gender inequality in IT remains a matter of concern ... -
Parameter uniform numerical methods for some singularly perturbed problems
(North-West University (South Africa), 2021)In this thesis, efficient numerical techniques have been proposed to solve different types of singularly perturbed problems. That is problems whose solutions are characterized with rapid oscillation usually known as ... -
Parasite diversity within native and invasive terrapins : implications for conservation
(2014)Terrapins are one of the most endangered vertebrate groups, with almost half of the more than 300 extant species threatened with extinction. This study was conducted to investigate parasite host-switching from the invasive ... -
Parasite introduction to the endangered western leopard toad : spill over or spill back?
(North-West University (South Africa), Potchefstroom Campus, 2017)South Africa has a diverse anuran fauna consisting of 161 described species. Amphibians are suffering large-scale regressions due to various threats: (1) pollution, (2) habitat engineering and (3) invasive species. The ... -
Participatory rural appraisal approaches, to improve public participation in South African EIA
(North-West University (South Africa), Potchefstroom Campus, 2016)The Public Participation (PP) process is an important part of Environmental Impact Assessment (EIA) nationally and internationally. PP provides a platform where everyone affected directly and or indirectly by a development ... -
Particle acceleration at travelling shocks in the heliosphere
(North-West University (South Africa), 2020)The acceleration of energetic protons from the solar wind (SW) distribution by traveling interplanetary shocks is investigated. The SW velocity distribution is represented using kappa functions, which are transformed in ... -
The partition behavior and the chemical speciation of selected trace elements in a typical coal sample during pyrolysis
(North-West University, 2008)Sasol is by far the world's leading company in upgrading of low-grade coal into high value chemicals and fuels. Such plants also utilise fine particles or pulverised coal in the combustion process to generate steam and ... -
The partitioning of platinum in aquatic ecosystems and disruption to aquatic communities
(North-West University (South Africa), 2022)Due to the increasing presence of platinum (Pt) in the environment, it becomes crucial to identify its toxic potential in species at risk of being exposed, especially those found in aquatic environments where metal pollutants ... -
Passive sampling and distribution of DDT in air
(North-West University, 2013)Dichloro-diphenyl-trichlorethane (DDT) is a chemical used in malaria control through indoor residual spraying (IRS) and has saved numerous lives in the past six decades. DDT use is restricted/banned under the Stockholm ... -
A PCR detection method for mutations in receptor–protein genes from Busseola fusca potentially involved in Bt–resistance
(North-West University, 2012)Genetically modified (GM) crops attracted interest globally when use of these crops resulted in significant increases in yield and production. These increases were due to protection of crops from pests, weeds and diseases. ... -
Pelvic biomechanics and muscle activation patterns during non–weighted squats in U/19 university–level rugby union players
(2013)Hyperlordosis or anterior pelvic tilt is a common non-neutral spinal posture associated with weak core stability, low back pain and altered lumbopelvic muscle activation patterns. Yet the effects of altered lumbopelvic ... -
Perceived effects of professionalization of extension services on delivery by public and private agents in South Western Nigeria
(North-West University (South Africa), 2018)The need to professionalize extension services which is an indispensable way to improve and ensure a viable, effective and vibrant extension and advisory service delivery in the study area led to this study. The study ... -
The perceived value of Environmental Assessment (EA) for the Government of South Africa
(North-West University (South Africa), 2019)Environmental Assessment (EA) is a fundamental environmental management tool in South Africa that plays an important role in the management of environmental impacts in the country. EA aims to ensure that development takes ... -
Perception and knowledge of black Africans on physical activity and non-communicable diseases
(2014)The burden of non-communicable diseases (NCDs) is high in South Africa. Behavioural conducts and lifestyle factors, unhealthy diets and physical inactivity are the major contributors to the development of NCDs among South ... -
The perception of commercial forestry managers of fire management challenges in rural Mpumalanga, South Africa
(North-West University (South Africa), 2022)Around 20 000ha of plantation area in South Africa is lost per annum to forest fires, with a direct annual economic plantation loss of R402 million. The majority of larger forestry organisations are well equipped to deal ... -
Perceptions of teachers on the implementation of the waste management hierarchy within secondary schools
(North-West University (South Africa), 2023)Education plays an important role towards improved waste management, and may influence the implementation of national policy objectives, such as the waste management hierarchy. This research aimed to determine the perceptions ... -
Perceptions on the effectiveness of EIA scoping in South Africa
(North-West University (South Africa), 2021)Scoping is one of the earliest stages in an Environmental Impact Assessment (EIA) process but can continue throughout the EIA process as new impacts, issues and other matters arise. Scoping is a requirement of any EIA ... -
Perceptions, coping strategies and welfare impact of drought among small stock farmers in Amathole, Eastern Cape
(North-West University (South Africa), 2022)The study perused the concept of drought from farmers’ perspectives and how it affects their welfare. The study area included Raymond Mhlaba and Amahlathi Local Municipalities under the Amathole District Municipality in ... -
Percutaneous absorption of selected hydrophilic compounds : an in vitro study on hairless mouse skin
(North-West University (South-Africa), 1983)INTRODUCTION The objective of this study was initially to - contribute to a current data base in order to obtain a set of data on the ether-water partition coefficients and permeability coefficients of a variety of ... -
Percutaneous delivery of methotrexate in the absence and presence of natural permeation enhancers
(North-West University, 2003)The transdermal delivery of drugs has a lot of advantages above other routes of delivery, such as the avoidance of first-pass hepatic and intestinal metabolism, the non-invasive infusion of drugs, etc. However, the ...
