Materials Science and Engineering: Recent submissions
Now showing items 81-100 of 109
-
Improving the Wear Resistance of Barite Mining Tools
(2014-12-15)Wearing of mining tools leads to high replacement costs, machine downtime and loss of business opportunities. This work was however, aimed at improving the wear resistance of AISI 1065 and 1070 proeutectoid steels used for ...
-
Oxidation of TBC Coated Nickel Based Superalloys and Gamma Titanium Aluminides for Land-Based Engines
(2014-12-12)Our ability to power modern airplanes and land based engines depends largely on the thrust generated most importantly by aero engines. Over the past 30 years material cost has become an important factor, especially in ...
-
Co2 Corrosion of the Welded Joint of an X65 Steel: Analysis of Surface Film Formed
(2014-12-12)Carbon dioxide (CO2) corrosion, also known as sweet corrosion of steels has increased in recent years due to the injection of CO2 into oil wells in order to increase oil recovery and production. Despite the fact that carbon ...
-
Corrosion Behaviour of Low Carbon Steel used in Oil and Gas aboveground Storage Tanks
(2014-12-15)The cost and losses associated with corrosion annually is approximately $ 276 billion or 3.1% of the GDP in the USA, 3 - 4% of GNP in Australia, Great Britain, Japan and other countries. The associated cost and losses ...
-
Induced Sickling of Erythrocytes Via Bending and the Effect of Mechanical Properties on Cell Pore Entry
(2014-12-15)Patients living with sickle cell disease are perpetually plagued with painful crisis episodes, caused by vascular occlusion. Over time, this leads to oxygen deprivation and the eventual damage of starved tissues and organs. ...
-
Controlled Release of Fungicidal Antimicrobials on Packaged Foods
(2014-12-15)This paper presents the effect of polymer concentration on the release of fungicidal antimicrobial (AM) agent to prolonging the shelf life of packaged food. This project aimed to produce and test AM films with varying ...
-
Cell Surface Interaction on a Multi - Scale
(2014-12-15)The increasing rate of cancer patients worldwide, and especially Africa has led to numerous efforts to battle it. One approach to this has been localized drug delivery to reduce the quantity of drugs needed for therapeutic ...
-
Prodigiosin Encapsulated Poly Lactide-Co-Glycolide (PLGA)- Coated Stent for Coronary Cardiovascular Interventions
(2014-12-15)This research focuses on the design of a robust but flexible prodigiosin eluting stent coating for possible coronary cardiovascular implant. When coated with the drug embedded polymer matrix, the stent would be expected ...
-
Bioinspired Design
(2013-05-12)Bioinspired design involves the use of concepts observed in natural biological materials in engineering design. The hope is that the leveraging of biological materials in the engineering domain can lead to many technological ...
-
Failure Mechanisms of Epoxy Coatings in Pipelines
(2013-05-12)Epoxy, a thermosetting polymer due to its attractive properties, has been widely used in many industries as a coating material such as the oil and gas industries. This study provides an insight into the corrosion behavior ...
-
A Study of the Pre-Treatment Temperature of Lignocellulosic Butanols an Alternative Fuel (BIOFUEL) Produced from Bamboo using Clostridium Acetobutylicum
(2013-05-12)Conversion of lignocellulosic biomass from bamboo (Bambusa vulgaris) to butanol is an important alternative energy source. In this work, bamboo was used as biomass feedstock for the production of butanol by the fermentation ...
-
Numerical Modeling of Wellbore Instability (SHEAR Failure) using Fracture Mechanics Approach
(2013-05-12)Wellbore instabilities are responsible for 10-20% of the total drilling cost. It has been estimated that wellbore instability causes an annual economic loss of US$ 500 - 1000 million in the oil industry across the world. ...
-
The Effect of Bitumen Coatings on the Corrosion of Low Carbon Steels (API 5l X65)
(2013-05-12)The corrosion behavior of uncoated and cut-back bitumen coated X65 Steel samples are being investigated in environments of different pH (2, 3, 4 and 7). Immersion tests were carried out on the samples at 25oC. The comparison ...
-
The Role of Sulfur Oxidizing Bacteria on Corrosion of X65 Low Carbon Steels and its Mitigation Using Sodium Tungstate and Nickel Biocides
(2013-05-12)Metals in service often give a superficial impression of permanence, but all except gold are chemically unstable in air and air-saturated water at ambient temperatures and most are also unstable in air-free water. Corrosion ...
-
Numerical Modeling of Wellbore Instability (TENSILE Failure) Using Fracture Mechanics Approach
(2013-05-12)When a well is drilled, the equilibrium in-situ stress is changed. In order to support the stress relief induced by the drilling and to prevent hydrocarbon influx into the cavity, the borehole is filled with a fluid. These ...
-
Annealing Heat Treatment of Organic Material for Controlled Bulk Heterojunction Solar Cells
(2013-05-15)The morphology of active layers of organic solar cells plays crucial roles in achieving good performing devices with longer life span. The process of fabricating these devices involved post deposition thermal annealing, ...
-
Effect of Pressure on the Performance of Organic Light Emitting Devices Fabricated by Cold Welding
(2013-04-15)Analytical and finite element models were used to simulate additive cold welding patterning processes. The effects of adhesion, pressure, thin film (layer) thickness and dust particle modulus (between the contacting surfaces) ...
-
Paclitaxel Loaded Polylactide-Co-Glycolide Acids for Coronary Artery Disease and Cancer Treatment
(2013-04-07)The number one killer disease in the world is Cardiovascular Disease1. The most serious element of Cardiovascular Disease is Coronary Artery Disease. Currently, the main treatment for Coronary Artery Disease is stent ...
-
Modeling of Cold Welding and Lamination of Organic and Hybrid Organic /INORGANIC Structures
(2011-12-15)This research work presents the results of analytical studies of effects of pressure and adhesion energy on the interfacial properties of cold welded and laminated surfaces in organic and Hybrid Organic/Inorganic electronic ...
-
Biosynthesis of Magnetic Nanoparticles for Cancer Detection and Treatment
(2011-12-15)Chemical and physical methods for the synthesis of magnetic nanoparticles for cancer detection and treatment often involve toxic chemicals, high cost and the formation of non-stable nanoparticles. This prompted the development ...