African University of Science and Technology: Recent submissions
Now showing items 121-140 of 4783
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Geotechnical Properties of Lateritic Soil Stabilized with Bone Ash and Hydrated Lime for Road Construction Applications
(2020-12-12)This research is focused on evaluating the geotechnical properties of lateritic soil stabilized with bone ash and hydrated lime to improve the strength and quality of Nigerian lateritic soil (acquired from Galadimawa in ...
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Optimization of Polyvinylpyrrolidone (PVP) as A Potential and Suitable Binder for Electrochemical Supercapacitor
(2020-12-12)Polyvinylpyrrolidone (PVP) is suitable alternative to the polyvinylidene fluoride (PVDF) often used binder in electrode of supercapacitor. The major problem of the PVP is the part it plays in the conductivity of ions in ...
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Applications of Additive Manufacturing in the Production of Automobile Parts from Polymers and Natural Fiber Reinforced Polymer Composites
(2021-04-12)The rate of CO2 emissions from manufacturing industries and some manufactured products in service or at the end-of-life use is really troubling and needs attention. The CO2 contribution from the automotive or transportation ...
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The Effect of Infusing Tio2 Nanoparticles on the Optoelectronic Properties of Mehppv Thin Films for Oled Fabrication.
(2021-09-12)The use of MEHPPV in OLED application has increased currently. The main issue surrounds its ability to perform well optically and electronically. To enhance the performance of MEHPPV polymer in this sense, this study looks ...
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Hydrometallurgical Recovery of Lithium and Cobalt from Spent Lithium-Ion Batteries
(2019-07-12)The demand for lithium-ion batteries is high because of their high energy and power density, which most time is influenced by the lithium-ion cathode chemistry. However, the need for expensive and scarce metals, such as ...
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Improving Lifting Capacity and Modelling Hydraulics of Local Based Muds Flowing Through Vertical Pipes
(2019-06-12)Drilling mud plays an integral part in drilling operations to perform several functions some of which are to cool drill bits, provide hydrostatic pressure and give information about subsurface formation. The cutting ...
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Development of Implantable Scaffold for Ear Tissue Cartilage with Potential Application in Bionic Ears
(2021-06-16)The technology of Organ regeneration and Bionics is fast being adopted to the 21st century medicine. While the regenerative organs will help overcome the challenge of donor and acceptor of organs, bionics present with an ...
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Electrochemical Performance of Coconut Coir Fibers as a Potential Source of Carbon Materials for Electrochemical Supercapacitors
(2020-04-12)This work aims to investigate the use of coconut coir fibre as a potential source of carbon for supercapacitor electrode materials. The chemical activation process was adopted using KOH as an activating agent. The carbonization ...
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Studies on Methylene Blue Dye Adsorption, using Carbonized, Activated Carbon and Magnetic Carbonized Samples from Kentucky Coffee Tree Pods
(2020-04-12)This study was carried out under various experimental conditions and rate of dye adsorption such as the solution pH, the adsorbent preparation concentration, and contact time to assess the potentiality of Kentucky coffee ...
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Comparative Analysis of Limited and Fully Compositional Simulation of a Niger Delta Gas-Condensate Reservoir
(2021-06-23)Numerical simulators estimate the recovery volumes and the volume of fluids in-place in the reservoir as a function of time and space by solving complex partial differential fluid flow equations. For gas condensate reservoirs, ...
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Utilization of Machine Learning for Flow Assurance in the Oil and Gas Sector: a Focus on Annular Flow Prediction
(2021-07-12)There is insufficient literature for annular flow and applications of Machine Learning in the petroleum industry; thus, this thesis is centred on annular flow prediction. Liquid holdup and flow behaviour during annular ...
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Numerical Study of Mechanical Properties of Hybrid Solar Cell Thin Film Layers by Nanoindentation
(2021-06-14)The evolution in the use of solar panels for generation of electricity has been immense throughout the world, especially in the last decade. This has seen both organic and inorganic solar panels, with both of them possessing ...
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The Effect of Infusing Tio2 Nanoparticles on the Optoelectronic Properties of Mehppv Thin Films for Oled Fabrication.
(2021-09-06)The use of MEHPPV in OLED application has increased currently. The main issue surrounds its ability to perform well optically and electronically. To enhance the performance of MEHPPV polymer in this sense, this study looks ...
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Upgrading Low-Grade Iron Ore by Magnetizing Roasting using Sawdust
(2021-03-23)Low-grade iron ore sample was collected from Gangra mines in Nimba Liberia. The ore was subjected to XRD and XRF analysis and was found to contain 63.1% Fe2O3, 25.4% SiO2, 9.1% Al2O3, and 2.4% LOI. 561.5 g . 1684.5g raw ...
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Geotechnical Properties of Lateritic Soil Stabilized with Bone Ash and Hydrated Lime for Road Construction Applications
(2020-12-14)This research is focused on evaluating the geotechnical properties of lateritic soil stabilized with bone ash and hydrated lime to improve the strength and quality of Nigerian lateritic soil (acquired from Galadimawa in ...
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Approximation of Solutions of Inclusion Problems with Applications to Hammerstein Equation and Image Restoration
(2020-09-12)Monotone operators and accretive operators are essential to modern optimization and xed point theory. Monotone operators were rst discovered by Minty in real Hilbert spaces to aid in the abstract study of electrical ...
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Effect of Annealing on the Morphological and Optoelectronic Properties of Ch 3 Nh 3 Pb I 3 Thin Films for Perovskite Solar Cell Applications.
(2021-03-23)Organolead Trihalide Perovskites (OTPs) is one of the third generations’ photovoltaic technologies which have achieved excellent power conversion efficiency (PCE) of 3.8% in 2009 to 23.7% in 2018, just within nine years ...
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3d Printing Scaffolds for Breast Tissue Engineering Applications
(2021-04-16)Recently, the field of Tissue Engineering has explored the potential for the regeneration of many organs and tissues in the human body. The aim of this study applied to breast tissue engineering is to overcome the major ...
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Evaluation of Metakaolin-Based Geopolymer as a Stabilizing Agent for Expansive Soil
(2021-04-15)The prevailing method currently used in treating and stabilizing expansive soil is chemical stabilization. The two materials that are widely used in this regard are lime and cement. They have proven over the years to be ...
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Finite Pulse Ratchet Effect of Cold Atoms
(2021-03-23)The thesis presents the modelling and simulation of the rachet effect created by a spatio temporal asymmetry potential. The potential is a coupled spatial asymmetry sin wave and a rectangular pulse train. The effective ...