Browsing PhD Theses by Title
Now showing items 21-40 of 50
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Earth-Based Construction Materials Reinforced with Tropical Plants and Recycled Waste Cellulose Pulp Fibre: Performance and Durability Assessment
(2021-02)Due to the growing concern of deforestation, renewable materials such as recycled cellulosic waste and non-wood fibres provide an alternative solution for partial replacement of wood resources as a reinforcement agent in ...
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Effects of Adhesion and Deformation on Stretchable Electronic Structures
(2015-11-15)This work presents the results of a combined experimental, computational and analytical study of the effects of adhesion and deformation on stretchable electronic structures. First, atomic force microscopy is used to measure ...
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Effects of Pressure, Bending and Annealing Temperature on the Mechanical and Optoelectronic Properties of Perovskite Solar Cells
(AUST, 2022-01-05)The increasing needs for clean and sustainable energy stimulate the growing interest in photovoltaic (PV) technology using organic-inorganic hybrid perovskite materials. However, perovskite solar cells (PSCs) are faced ...
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Engineering and Geological Investigations of Slope Stability and Rock Strength Characterization using Nanoindentation
(2021-06-15)Slope stability is of significant importance for sustainable development in mining, civil engineering, and urban planning as slope failures endanger public safety and continue to result in costly repair work. This study ...
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Expanded Clay Aggregates for water purification
(African University of Science and Technology, 2021-02-10)Most poor and vulnerable people such as the peri-urban, people living in poverty and some internally displaced people (IDPs) are prone to water borne diseases because they drink polluted water. In order to improve water ...
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Genetic Units Based Reservoir Characterization using a Normalized Pore Throat Radius for the Clastic System: Niger Delta as Field Case Study
(2016-12-12)Globally, 30–50% of hydrocarbon volumes in silici-clastic reservoirs are contained within the thin-bedded pay. In the Niger Delta deep water assets, over 30% of in-place volumes are found within the complex turbidites. The ...
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Implantable Biomedical Devices for Localized Breast Cancer Drug Delivery
(2015-10-15)This thesis focused on an implantable encapsulated structures that can deliver localized heating and controlled released of prodigiosin (PG) (a cancer drug) synthesized by bacteria (Serratia marcescens (subsp. marcescens)). ...
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Implantable Composite Devices for the Localized Treatment of Breast Cancer
(2015-06-15)Current standard of care treatment modalities for early-stage breast cancer typically involve mastectomy or lumpectomy followed by radiation therapy to remove any residual cancer cells. Although mastectomy has a low ...
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Integrated Modelling and Optimization of Options for Developing Thin Oil Rim Reservoirs: Niger Delta Case Study
(AUST, 2020-09-12)The goal of an oil field development project is to accelerate the hydrocarbon production and maximize recovery at the lowest cost. Optimizing the production of oil from thin oil rim reservoirs poses a major challenge in ...
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Iterative Algorithms and Existence Theorems for Solutions of Nonlinear Equations in Banach Spaces.
(AUST, 2013-11-05)Let E be a q-uniformly smooth real Banach space and D be a nonempty, open and convex subset of E. Assume that T : D → CB(D) is a multi valued continuous (with respect to the Hausdorff metric), bounded and pseudo-contractive ...
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Iterative Algorithms for Single-Valued and Multi-Valued Nonexpansive-Type Mappings in Real Lebesgue Spaces
(2015-07-15)Algorithms for single-valued and multi-valued nonexpansive-type mappings have continued to attract a lot of attentions because of their remarkable utility and wide applicability in modern mathematics and other reasearch ...
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Iterative Algorithms for Split Equality Fixed Point Problems and Some Non-Linear Problems in Banach Spaces With Applications
(AUST, 2019-06-06)Let H1, H2, and H3 be real Hilbert spaces, T and S be non-linear maps defined on H1 and H2, respectively, and with non-empty fixed point sets, F ix(T) and F ix(S), respectively, A and B be linear maps respectively mapping ...
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Layered Composite thin Films for Cost Effective Transparent Organic Solar Cell Electrodes
(2015-08-20)In this dissertation two main themes are explored. In the first part some phenomenologies of light transport across the ZnO/Al/ZnO (ZAZ) thin film multilayer structures are investigated. The multilayered ZAZ thin film ...
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Machine Learning Techniques for Malaria Incidence and Tuberculosis Prediction
(AUST, 2021-07-02)This research proposes machine learning techniques to develop models that would facilitate decision-making in health informatics. It focuses on using efficient machine learning techniques to solve the pressing need in the ...
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Mechanical Properties of Natural Fiber-Reinforced Earth-Based Composites
(2015-11-23)This study presents the results of a combined experimental and theoretical study of the strength, fracture toughness and interfacial properties of natural fiber-reinforced earth-based composite materials. The composites, ...
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A Model Driven Engineering Framework for Healthcare Systems Management
(AUST, 2017-12-05)Traditional mathematical methods such as differential equations formalism have been used for centuries as the main tools for analysis of complex systems in varied areas. As opposed to the general solutions provided by ...
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Nano and Micro-Particles for Breast Cancer Detection and Treatment
(2015-03-15)This dissertation shows the use of material science and engineering approaches in developing solutions to problems in the life science with focus in nano and micro-particles for the detection and treatment of cancer. It ...
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New Frontiers for Solar Cells and Light Emitting Devices
(AUST, 2017-02-05)Solar energy, with its abundance and availability, would ultimately replace dwindling fossil fuel reserves in this new era of cleaner and more efficient energy as the world surges on to new technologies and horizons. This ...
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On the Effect of Surface Texture and Nanoscale Surface Oxides on the Optical and Mechanical Properties of Silicon Single Crystals and MEMS Thin films
(2015-11-15)This dissertation presents the combined results of analytical, computational and experimental study of the effects of surface texture and nanoscale surface oxides on the optical and mechanical properties of silicon single ...
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Optimization of Fabrication Processes of Non Halide Pb Precursor Based Perovskite Solar Cells
(2021-03-12)The organic-inorganic halide perovskite solar cells have continued to attract serious research interest since the first introduction as solar light absorber by Miyasaka and co-workers with a power conversion efficiency ...