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Browsing PhD / Doctoral by Faculty "Faculty of Science"

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A biophysical, biochemical and serological study of selected members of the enteroviruses

Author: Smith, Martin Sidney Date: 1969 The purpose of this investigation was to study the biophysical and biochemical properties of some of the enteroviruses. Previous work in this laboratory on several members o.f this large sub-group of the Picornaviruses had emphasised the ... Read more
A comparative study of stochastic models in biology

Author: Brandão, Anabela de Gusmão Date: 1997 In many instances, problems that arise in biology do not fall under any category for which standard statistical techniques are available to be able to analyse them. Under these situations, specifics methods have to be developed to solve and ... Read more
A contribution to the study of older granites in the Nigerian Precambrian with special reference to the Tegina granite

Author: Truswell, J F ; Truswell, John Francis Date: 1960 Rocks of the Older Granite suite occur throughout the Nigerian Precambrian. In part 1 of this thesis an example, the Tegina granite, is examined in detail. In part II the suite as a whole is described and discussed. The granite is an elongate ... Read more
A disformally coupled quintessence mimicking the ΛCDM background

Author: Dusoye, Avishek Date: 2022 Although the currently-accepted Concordance model of the Universe has been very successful observationally, it cannot resolve two main issues. Firstly, it cannot untangle the unknown nature of the cosmological constant in the Einstein Field ... Read more
A measure for the number of commuting subgroups in compact groups

Author: Kazeem, Funmilayo Eniola Date: 2019 The present thesis is devoted to the construction of a probability measure which counts the pairs of closed commuting subgroups in infinite groups. This measure turns out to be an extension of what was known in the finite case as subgroup ... Read more
A mechanistic approach to understanding the colour polymorphism in black sparrowhawks (Accipiter melanoleucus)

Author: Nebel, Carina Date: 2021 Species that exhibit large variation in phenotypic traits, are commonly considered to have a stronger evolutionary potential. However, how they are capable to maintain polymorphisms remains a fundamental problem in evolutionary biology. Colour ... Read more
A metallomic, proteomic and lipidomic investigation of the malaria parasites digestive vacuole and insights into the mediators of haemozoin formation

Author: Mohunlal, Roxanne Date: 2019 Novel and unambiguous mechanistic details of the biochemical processes that enable the most virulent form of the malaria pathogen, Plasmodium falciparum, to thrive within the human host are desperately required in order to find innovative ... Read more
A multivariate statistical approach to the assessment of nutrition status

Author: Fellingham, Stephen A Date: 1972 Attention is drawn to the confusion which surrounds the concept of nutrition status and the problem of selecting an optimum subset of variables by which nutrition status can best be assessed is defined. Using a multidisciplinary data set of ... Read more
A new compact neutron spectrometer

Author: Comrie, Angus Date: 2016 A new compact neutron spectrometer has been designed, developed and characterized. The detector is based on EJ299-33 plastic scintillator coupled to silicon photomultipliers, and a digital implementation of pulse shape discrimination is used ... Read more
A new connectivity strategy for wireless mesh networks using dynamic spectrum access

Author: Maliwatu, Richard Date: 2021 The introduction of Dynamic Spectrum Access (DSA) marked an important juncture in the evolution of wireless networks. DSA is a spectrum assignment paradigm where devices are able to make real-time adjustment to their spectrum usage and adapt ... Read more
A novel approach to investigating chlorophyll-a fluorescence quantum yield variability in the Southern Ocean

Author: Bone, Emma Lewis Date: 2019 The apparent fluorescence quantum yield of chlorophyll-a (ΦF ), i.e. the ratio of photons emitted as chlorophyll-a fluorescence to those absorbed by phytoplankton, serves as a first order measure of photosynthetic efficiency and a photophysiological ... Read more
A probabilistic approach to a classical result of ore

Author: Muhie, Seid Kassaw Date: 2021 The subgroup commutativity degree sd(G) of a finite group G was introduced almost ten years ago and deals with the number of commuting subgroups in the subgroups lattice L(G) of G. The extremal case sd(G) = 1 detects a class of groups classified ... Read more
A single AKH neuropeptide activating three different fly AKH-receptors: an insecticide study via computational methods

Author: Abdulganiyyu, Ibrahim A Date: 2021 Flies are a widely distributed pest insect that poses a significant threat to food security. Flight is essential for the dispersal of the adult flies to find new food sources and ideal breeding spots. The supply of metabolic fuel to power the ... Read more
A study of Benguela Niños and Niñas from 1958 to 2015

Author: Imbol, Koungue Rodrigue Anicet Date: 2018 Prediction and Research Moored Array in the Tropical Atlantic (PIRATA) records in combination with outputs from an Ocean Linear Model (OLM) and altimetric data are used to investigate the link between the equatorial Atlantic Ocean dynamics ... Read more
A study of Mesoscale Eddies, the Agulhas current and the evolution of its meanders using satellite observations and numerical modelling experiments

Author: Braby, Laura Date: 2019 The Agulhas Current is the strongest western boundary current in the Southern Hemisphere and plays an important role in the exchange of heat and salt between the Indian and South Atlantic Ocean basins, thereby affecting global climate. The ... Read more
A study of relativistic fluids with applications to cosmology: A variational approach

Author: Oreta, Timothy Date: 2021 This thesis examines relativistic fluids. We have used the variational approach to develop tools for studying the dynamics of relativistic fluids to apply this to cosmological modelling. Studies like these go beyond the standard model in ... Read more
Abundance and mortality of anchovy eggs caused by cannibalism and intraguild predation, and the potential effect on anchovy recruitment and clupeoid fluctuations

Author: Szeinfeld, Edy Sylvia Valdes Date: 1991 This thesis is structured in the form of five main chapters, each written in the form of an independent paper and supported by a general conclusion and one previously published paper on the same general theme. The central theme is the dynamics, ... Read more
Acceleration waves in constrained thermoelastic materials

Author: Bleach, Gordon Phillip Date: 1989 We study the propagation and growth of acceleration waves in isotropic thermoelastic media subject to a broad class of thermomechanical constraints. The work is based on an existing thermodynamic theory of constrained thermoelastic materials ... Read more
Accounting for the C/city: analyzing Kisumu's fiscal configurations

Author: Cirolia, Liza Rose Date: 2019 Urban public finance is a hidden force shaping cities and their development. This thesis draws attention to the powerful insights which can be gained from studying cities through a fiscal lens. It argues for an interdisciplinary and relational ... Read more
Accretion processes in magnetic cataclysmic variables - a detailed study of UZ Fornacis

Author: Khangale, Zwidofhelangani Ndamulelo Date: 2022 This thesis presents a multi-wavelength exploration of the emissions from magnetic cataclysmic variable (mCV) stars with specific focus on the eclipsing AM Her system, UZ Fornacis (hereafter UZ For). The main objective of this thesis is to ... Read more

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