ABSTRACT 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 of epoxy looking at its adsorption properties at the epoxy steel interface and the adhesion behavior for different corrosion environments. The study was carried out using conventional weight-loss measurements and microscopic observation after immersion in Hcl of va...
ABSTRACT This study examined the mechanical properties of earth-based materials that are relevant to the future development of affordable housing. Earthcrete structures were produced by mixing various proportions of laterites, clay and cement, while natural fibre-reinforced composites were produced by mixing earth-based matrices with natural fibre (Straw). Mechanical testing showed that optimum performance of the various samples was obtained at a fibre content of 20% by volume, with compress...
ABSTRACT The majority of human population especially in developing countries suffers from waterborne diseases such as skin abscesses, cellulitis, skin infections, and diarrhoea due to improperly treated water. Safe drinking water remains unavailable to a large portion of the global population and this is a global concern. This work focused on the design, construction and evaluation of charcoal, activated carbon, Moringa seed and sand water filtration systems with an objective of evaluating t...
Abstract In the recent decade, hybrid organic- inorganic trihalide perovskite solar cells have attracted significant interest from the scientific community due to their unique optoelectrical properties, ease and low cost of fabrication. Extensive research has been carried out to understand the electrical and optical properties of this novel material with a view to boosting the efficiency of the system. However, not much has been done to understand the mechanical properties of the system. The...
ABSTRACT The presence of heavy metals in water and soil by metalliferous mining activities at MNG-Gold Mine was fully investigated. The extraction of gold in recent years, has led to the generation of huge quantities of solid and liquid wastes. During the course of the investigation, fourteen samples including surface water, groundwater and soil were collected and analyzed to determine physio-chemical parameters and heavy metal contents. Atomic Absorption spectrometer (AAS FS 240) was used t...
ABSTRACT This study examines the basic operation of an Organic Light Emitting Device (OLED) and Hybrid Organic-Inorganic Light Emitting Devices (HOILED) by looking at the individual characteristics of the each layer which makes up the entire device. Adhesion analysis and different types of layer characterization were carried out. First of all, the material of interest was deposited on AFM tips, clean 1 sq. inch glass substrates and ITO-coated glass with subsequent final fabrication of the de...
Abstract 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 recurrence rate, it is an aggressive form of treatment for early-stage breast cancer. Therefore, there is a need for the development of new strategies that could increase the use of lumpectomy by eliminating residual cancer cells to reduce local recurrence with limited s...
ABSTRACT 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 of sugars. Mechanical grinding was carried out, followed by pre-treatment with dilute sulfuric acid concentration of 0.5 and 1.0 (%v/v). This was done at temperatures of 25, 110, 120, 150 and 2000C at time intervals of 2 and 4 hours. Prehydrolysate was later anal...
ABSTRACT The use of Magnesium oxide (MgO) cement as a full replacement and viable alternative for Ordinary Portland Cement was studied. Rice husk, an agricultural waste, was calcined and synthesised to be used as a source of silica and a pozzolan in the production of this cement. Rice husk ash (RHA) of various particle sizes (45, 106 and 150 μms) was used and varying dosages of superplasticiser were also used to alter the water to cement (w/c) ratio of the cement. The MgO/SiO2 ratio at 60% ...
ABSTRACT The Luteinizing Hormone-releasing Hormone (LHRH); also known as a GonadotropinReleasing Hormone can be utilized for targeted therapy with cytotoxic analogs, in which prodigiosin is linked to the [D-Lys6] LHRH. Our studies demonstrate receptor-mediated actions of the cytotoxic LHRH analog in LHRH receptor positive breast cancer cells. Chemotherapy today is the only systematic therapy for patients with triple negative breast cancer cells. About 50% to 64% of human breast cancer expres...
ABSTRACT 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. Hence, the maintenance of wellbore stability is of major concern to drilling engineers in the oil and gas industry. Hence, several models have been developed for the assessment or prediction of wellbore instabilities. However, these models do have some limitations. ...
ABSTRACT This paper presents the use of multilayered chitosan films incorporated with antimicrobial agent, potassium sorbate to enhance effective food packaging. In this study, potassium sorbate was incorporated into multilayer chitosan films for antimicrobial food packaging applications. The effectiveness of the films was tested through measurement of release kinetics and antimicrobial activity on a selected microorganism, Aspergillus niger. All the films prepared with potassium sorbate sho...
ABSTRACT 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 of fundamental understanding of the synthesis of magnetic nanoparticles, which are biocompatible, cost effective, stable, localized and environmentally friendly in the presence of magnetotactic bacteria. In this work, fundamental understanding of the underlyin...
Abstract 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 presents the results of experimental and theoretical studies of magnetite, gold nanoparticles and injectable multi-functional biodegradable polymer-loaded microparticles. Biocompatible magnetite nanoparticles (BMNPs) were produced from Magnetospirillum magneticum (M....
ABSTRACT One of the unintended impacts of crude oil exploration is the pollution of agricultural land and aquatic resources when there is accidental oil spillage. The environmental effect of this has resulted in untold hardship to communities within oil producing regions all over the world and has been the main reason for conflicts in the regions. Nigerian Niger Delta region has been devastated by oil pollution and gas flaring, and both the government of Nigeria and the multinational oil pro...