African University of Science and Technology: Recent submissions
Now showing items 141-160 of 4789
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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 ...
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Graphene-Hexagonal Boron Nitride Work Function Response to Uniform Planar Deformations: An ab initio DFT Study
(2021-04-23)A two-dimensional hybrid material with graphene and hexagonal boron (h-BN) domain is considered as viable material for future generations of flexible electronic devices due to the tunable band gap, excellent mechanical and ...
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Ratchet Current Landscape at Quantum Resonance
(2020-12-14)The ratchet effect is the rectified motion of atoms using an unbiased driving force. By ‘’unbiased’’ we mean to say that the time-average is equal to zero. This can be accomplished experimentally using cold atoms in a ...
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Evaluation of Metakaolin-Based Geopolymer as a Stabilizing Agent for Expansive Soil
(2021-04-12)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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Upgrading Low-Grade Iron Ore by Magnetizing Roasting using Sawdust
(2021-03-16)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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3D PRINTING SCAFFOLDS FOR BREAST TISSUE ENGINEERING APPLICATIONS
(2021-04-12)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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Chemical Synthesis and Characterization of Functionalized Magnetite Nanoparticles for Targeting Breast Cancer Cells and Tissues
(2021-04-12)This study presents the results of the characterization of functionalized magnetite nanoparticles for targeting breast cancer cells. In this study, spherical magnetite nanoparticles with core diameters between 5nm and 30 ...
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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
(2021-03-15)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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Synthesis and Characterization of Iron Oxide via Chemical Leaching from Bioinspired Termite Mound for Biomedical Application
(2021-03-15)Nanomedicine has gained a lot of attention as a potential solution in theragnosis of cancer. With the introduction of nanoscale metallic oxide materials, imaging techniques, disease detection, and treatment modalities could ...
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Ph- Responsive Dextran Gated Functionized Mesoporous Silica for Drug Delivery
(2019-07-12)Mesoporous materials have generated a lot of interest over the past few decades owing to their wide range of applications in catalysis, separation, drug delivery, sensors, adsorption, photonics, nanodevices etc. To realise ...
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Effects of Cassava-Leaf-Enhanced Carbonitriding on Case-Hardening of Barite Mining Tools
(2017-12-12)This study presents the results of an experimental study of the effects of cassava leaves carbonitriding on the microstructure, hardness and abrasive wear behaviour of AISI 1065 and AISI 1070 steels used for barite mining ...
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Assessment of Barite Deposit in Nassarawa State for Oil Drilling Application
(2019-06-23)Drilling fluids play sophisticated roles in the drilling process which include, keeping formation fluids at bay, stabilizing the wellbore without damaging the formation, lubricating the bit and drill-string and clearing ...
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Synthesis and Characterisation of Extruded Alkali Activated Earth-Based Composites for Sustainable Building Construction
(2019-09-22)Alkali activation is a rapidly developing area in the global materials research and development community. It is based on alkali aluminosilicate chemistry with primary focus on the activation of solid aluminosilicate ...
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Investigation of Peo-Polymer Blend Electrolytes for Electrochemical Capacitors
(2019-07-13)Recently, there has been a drift of attention towards gel polymer based electrolytes owing to the fact that they are cheap and can achieve an extended potential window for improved energy density in s upercapacitor devices ...
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Investigation of Lead-Free Bismuth Perovskite by Numerical Simulation using Scaps
(2019-06-23)The theoretical study of methylammonium bismuth halide, (CH 3 NH 3 ) 3 Bi 2 I 9 , was simulated using SCAPS 1D software package. The effect of the bismuth perovskite absorber layer thickness on the solar cell performance ...