Browsing Natural and Agricultural Sciences by Title
Now showing items 417-436 of 2708
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A comparative study of the antioxidant properties of chalcone derivatives through the Fe chelation mechanism
(North-West University (South Africa), 2016)This dissertation reports the results of a theoretical investigation on the conformational and antioxidant properties of four chalcone derivatives, namely butein, homobutein, kanakugiol and pedicellin, through their Fe ... -
A comparative study of the development and reproduction of Meloidogyne enterolobii and other thermophilic South African Meloidogyne species
(North-West University (South Africa), 2020)Meloidogyne enterolobii, a highly pathogenic root-knot nematode species, infects fruit, grain, oilseed, ornamental and vegetable crops causing severe damage to agri-and horticultural crops worldwide. The species is infamous ... -
A comparative study of the Wet-Health tool and the citizen-science land-cover based wetland assessment method
(North-West University (South Africa), 2019)Citizen science approach has a role to play in the determination of the wetland condition in South Africa (SA). Public participation in wetland health assessment and monitoring can help them interact with authorities, and ... -
Comparing generalised additive neural networks with decision trees and alternating conditional expectations
(North-West University, 2008)In this dissertation generalised additive neural networks (GANNs), decision trees and alternating conditional expectations (ACE) are studied and compared as computerised techniques in the field of predictive data mining. ... -
Comparing generalized additive neural networks with multilayer perceptrons
(North-West University, 2011)In this dissertation, generalized additive neural networks (GANNs) and multilayer perceptrons (MLPs) are studied and compared as prediction techniques. MLPs are the most widely used type of artificial neural network (ANN), ... -
Comparing predefined derivatisation parameters for GC-MS analysis of selected organic acids
(North-West University, 2019)Organic acids are intermediates of numerous biochemical pathways in living organisms. They can be detected in biological fluids which make it possible to obtain a representative profile of the functioning of biochemical ... -
Comparing risk and rewards for portfolio selection strategies
(North-West University, 2005)The purpose of this study is to obtain an effective solution to the portfolio selection problem, for different risk measures. There is a trade-off between risk and return. We want to determine how an investor should ... -
Comparing the photochemical potential of quinoa to maize under water stress conditions
(North-West University (South Africa)North-West University, 2020)In the current context of climate change, drought events are one of the major causes of yield reduction in crops. Seeing that South Africa is a water scarce country and along with the future climate change predictions, the ... -
A comparison between the cardiorespiratory responses of motorized and non-motorized treadmill protocols
(North-West University (South Africa), Potchefstroom Campus, 2017)Maximal aerobic capacity (VO2max) can be considered an important performance determinant of distance runners’ performance due to endurance events being performed at high percentages of one’s VO2max. The protocol and running ... -
A comparison of bioinformatic workflows for herbivore dietary analysis using a DNA metabarcoding approach
(North-West University (South Africa), 2023)Dietary analysis based on faecal DNA metabarcoding is dependent on the taxonomic coverage and quality of records available in DNA barcode reference databases, as well as the subsequent choice of bioinformatics pipeline to ... -
Comparison of complete mitochondrial genome sequence between different ethnic groups from Southern Africa
(North-West University, 2004)The human mitochondrial genome is a 16,569 base pair double-stranded deoxyribonucleic acid (DNA) molecule located in the mitochondrion. The mitochondria1 genome sequence is conserved, maternally inherited and undergoes ... -
A comparison of frameworks that measure the success of information technology projects
(North-West University (South Africa), 2017)Project management is an enhanced way of managing people, materials and/or equipment that is used when pursuing projects in different organizations. As described, a project is a brief attempt to create an end result or a ... -
A comparison of integrated transport and spatial planning instruments : a case study of the Eden district municipality, Hermanus local municipality and Cape Town metropolitan areas
(North-West University, 2012)In the field of city planning, a growing need exists for the integration of spatial development with transportation planning instruments. This study identifies issues related to the definition, evaluation and implementation ... -
Comparison of physical properties of oxidative sintered pellets produced with UG2 or metallurgical grade South African chromite : a case study
(2014)The Bushveld Igneous Complex (BIC) in South Africa holds approximately three quarters of the world’s viable chromite ore deposits. Most chromite is used for the production of ferrochromium (FeCr), which is a relatively ... -
A comparison of selected enhanced (coated) and non-enhanced grass seed types for re-seeding of disturbed areas
(North-West University, 2007)Restoration and rehabilitation activities are presently considered to be a major priority in environmental management, whether the activity implies the restoration of neglected cultivated pastures or degraded rangelands ... -
A comparison of the environmental impact assessment legislation of South Africa and Malawi
(North-West University, 2005)It is generally accepted that the environment has three inter-dependent components: economic, socio-political and natural Consequently, integrated environmental management coupled with sustainable development is critical, ... -
Comparison of the urban domestic garden flora along a socio–economic gradient in the Tlokwe City Municipality
(North-West University, 2011)Urbanisation has increased tremendously over the last 60 years so that more than 50 per cent of the world population now live in cities. This is especially true for in developed countries, but it is expected that developing ... -
Comparison Treatments of Oleanolic acid and Metformin on Lipid Metabolism of Rats (Rattus norvegicus) with Metabolic Dysfunction
(North-West University (South Africa), 2018)The World Health Organization indicated that the world 's population living with obesity has doubled to 13% since the 1980s, affecting more than 600 million adults and 42 million children under the age of 5 years in 2014. ... -
Competency of extension agents on climate smart agricultural initiatives in South Western Nigeria
(North-West University (South Africa), 2019)The effect of climate change has posed a great challenge to the survival of the human race and agriculture and the competence of extension agents in the effective dissemination of climate smart agricultural initiatives ... -
Complex analysis and realization theory for classes of free noncommutative functions
(North-West University (South Africa), 2020)A non-commutative function is a mapping defined on the disjoint union of tuples of matrices of all sizes which is graded (maps matrices of a given size to matrices of the same size), respects direct sums and similarities. ...