Browsing Natural and Agricultural Sciences by Title
Now showing items 312-331 of 2738
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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 ... -
Cancelable biometrics using hand geometry-based steganographic techniques
(North-West University (South Africa), 2019)Biometrics have long been used as an accepted user authentication method and have been implemented as a security measure in many real-world systems including personal computers, mobile devices, and physical access control. ... -
Carnitine conjugation profiling in a selected cohort of patients with chronic fatigue syndrome
(North-West University, 2019)Chronic fatigue syndrome (CFS) is classified by the World Health Organisation (WHO) as a non-communicable disease. Fatigue is a symptom commonly experienced by many individuals and is also a symptom associated with a wide ... -
Cellular damage by Auger electrons from ¹²³ I
(2005)Auger electrons have the potential for therapy mainly because of their short range and high level of toxicity. Biological effects of these electrons are critically dependent on the cellular and subcellular localization of ... -
Cenozoic deposits of South Africa
(North-West University (South Africa) , Potchefstroom Campus, 2016)The Cenozoic Era comprises the last 65 million years of Earth's history, which is divided into the Tertiary and Quaternary Periods. The deposits of the Cenozoic Era are reflected in many surface features covering South ... -
The central stellar populations of brightest cluster galaxies
(North-West University, 2012)The majority of galaxy clusters contain a massive galaxy in the centre of the clusters that are far more luminous and massive than the other galaxies in the cluster. These galaxies are called the brightest galaxy clusters ... -
Cestodes of the order Onchoproteocephalidea II infecting cartilaginous fishes (Elasmobranchii) in South Africa
(North-West University (South Africa), 2022)South Africa is globally classified as the third most biodiverse country on Earth. However, the immense deficiency of taxonomic marine based initiatives, especially regarding parasitological research, within this region ... -
The challenges associated with policy formulation along arterial routes : a case study of Ontdekkers Road, Johannesburg Metropolitan Council
(North-West University, 2010)Arterial routes are key structuring components of the urban structure. These routes perform vital functions, including the connectivity of nodes or nodal areas, providing access to urban opportunities, linking metropolitan ... -
Challenges in implementing environmental requirements for construction of electricity infrastructure : perspectives of non-environmental project team members
(North-West University (South Africa), 2023)Access to sustainable electricity has been identified as playing a crucial role in the drive towards sustainable development. As a result, infrastructure projects are being implemented at a fast rate to improve availability ... -
Changes in chemical and physical properties of South African caking coals during pyrolysis
(North-West University, 2015)The plasticity of coal during pyrolysis is of significant importance, since it affects the reactivity, porosity, particle size and the density of the char and thus also the behaviour of the char during further utilisation ... -
Changes in density and composition of algal assemblages over time in two water purification plants
(North-West University, 2012)In recent years, due to a change in the water situation in South–Africa and the effect of eutrophication in our water systems, there has been a significant increase in algal abundance and changes in species composition. ... -
Changes in the algal abundance and composition along the Mooi River in the Potchefstroom area
(North-West University, 2019)Rivers and dams are the main sources of fresh water in South Africa, and the quality of drinking water is rapidly deteriorating. More than 80% of the country's rivers and dams experience pressure as a result of utilisation ... -
Character in the novel Mntanami, Mntanami, by C.L.S. Nyembezi
(Potchefstroom University for Christian Higher Education, 1997)Different methods for the representation of character were studied in this min-dissertation. These were especially applied to the representation of character in the novel Mntanami, Mntanamil by the author CLS Nyembezi. ... -
Characterisation and management of open waste dumps in Fordsburg, Johannesburg, South Africa
(North-West University (South Africa), 2017)This study set out to understand salient issues around waste characterisation and its management, using Fords burg, Johannesburg as the study area. The purpose of the study was to investigate open waste dumps in order ... -
Characterisation and simulation of the influence of propellant geometric variability on gas delivery profiles
(North-West University (South Africa), 2020)Ballisticians do not currently take the significance of propellant grain geometry variance into account for the various solid propellants found within guns of various calibres (Baschung & Grüne, 2000). Conventional Internal ... -
Characterisation of a biological soil culture and its effects on the biology of root-knot nematodes
(North-West University (South Africa), 2017)Root-knot nematodes (Meloidogyne spp.) are the number one economically important and damaging nematode pest of agri- and horticultural crops. Withdrawal of synthetic nematicides from markets necessitated the exploitation ... -
Characterisation of a C elegans strain presenting with a mitochondrial contact site and cristae organizing system (MICOS) subunit deficiency
(North-West University (South Africa), 2022)Mitochondrial architecture varies remarkably from one tissue to another, and aberrations in mitochondrial architecture are associated with several dysfunctions. This indicates that mitochondrial function and architecture ... -
The characterisation of a fenoprofen prodrug
(North-West University (South Africa), 2000)The term "prodrug" refers to a pharmacologically inactive compound that is converted to an active drug by a metabolic biotransformation. A nonenzymatic process, such as hydrolysis, can activate a prodrug via several ... -
Characterisation of air masses passing over the Vredefort Dome world heritage site
(North-West University (South Africa), 2015)In 2007, it was announced that the Vredefort Dome will be proclaimed South Africa’s seventh UNESCO (United Nations Educational, Scientific and Cultural Organisation) world heritage site. It is the largest and second oldest ... -
Characterisation of an industrial Søderberg electrode
(North-West University (South Africa), 2023)Søderberg electrode management (together with the initial design of the electrode system) is commonly considered as one of the most important aspects of profitable and safe submerged arc furnace operation, with some even ...
