Abstract 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 commercial aero engines where light weight and high temperature materials are needed for improved efficiency and specific thrust. The required combinations of high temperature properties has led to the applications of nickel-based superalloys and most recently gamma ba...
ABSTRACT 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, which increases the crystallinity and enhances phase-separated domains of deposited active layer components. A blended composite of regioregular poly(3- hexylthiophene) (P3HT) and phenyl-C61-butyric acid methyl ester (PCBM) is used as the active layer in this BHJ sol...
ABSTRACT This study presents an investigation of the hydrodynamics behaviour of slug flow in an inclined (80 degree inclination) and 67 mm internal diameter pipe. The study provides a more rudimentary explanation into the physical phenomenon that controls slug flows behaviour and the way these parameters behave under variable flow conditions. Various correlations for determining slug characterisation parameters have also been presented and validated with the experimental data. The slug ...
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 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)). Prototypical poly-dimethyl-siloxane (PDMS) packages, containing well-controlled micro-channels and drug storage compartments, were fabricated along with a drug-storing polymer produced by free radical polymerization of Poly(Nisopropylacrylamide)(PNIPA)-based gels...
ABSTRACT This thesis describes the in situ methods of the determination of both the hydraulic conductivity and infiltration capacity of the Federal University of Technology, Owerri (FUTO) farm soil. The inverse anger hole method was chosen to determine the hydraulic conductivity due to its simplicity and effectiveness. Cognizance was taken of the factors as presented in the project report that affect the results determined. Also the various methods of determining the two parameters...
ABSTRACT Implantable Bio-Micro-Electro-Mechanical Systems (BioMEMS) represent a new class of devices that can provide localized cancer drug delivery by the combined effect of chemotherapy and hyperthermia which gives it an advantage over prior devices. The current work presents the results of a theoretical and experimental study of a novel implantable drug delivery device. Prototype Poly-di-methyl-siloxane (PDMS) packages with well-controlled micro-channels, and a drug storage compartments w...
ABSTRACT This study is on the determination of the Compressive Strength of Palm Kernel Shell Concrete. The effect of percentage replacements (0, 25, 50, 75 and 100%) of crushed granite with palm kernel shell on density and compressive strength of concrete is presented. Concrete cube specimens of mix 1:2:4 were prepared with water-cement ratio of 0.6. The cubes (150mm×150mm×150mm) were cured using water-submerged curing until testing ages of 7, 14, 21 and 28 days when their densities and c...
ABSTRACT A new method for analysing productivity index (PI) on vertical wells is the main objective of this study. Well performance is often measured in terms of the well’s productivity which is dependent on a number of factors such as the reservoir’s configuration, the type of completion, petrophysical and fluid properties, formation damage, etc. The effect of partial completion is the main focus of making the productivity index analysis since almost all vertical wells are partially com...
ABSTRACT Consumption of contaminated water may result in several water-borne diseases, including hepatitis, typhoid, cholera, dysentery and other diseases that cause diarrhoea. One of the ways this problem can be prevented is by the use of household water treatment and safe storage. As a result of this, the ceramic water filter, which is one of the effective water treatment techniques, was studied and evaluated to provide information that, will help improve their performance and promote thei...
ABSTRACT In this research, Social Network Web Application (SNWA) was developed and tailored for a specific use; community development in the Niger Delta region of Nigeria. In the SNWA development, preliminary context analysis was conducted to capture contextual information on community development challenges in the Niger Delta and the readiness of the target local community to adopt web-based solution to the identified challenges. Subsequently, User-Centered Requirement Engineering, User...
Abstract Design of a Robust Electronic Internal Temperature Controller for Petroleum Distillation is presented in this Thesis. During unstable weather conditions, there is a noticeable drop in the distillation internal column temperature. An extreme and frustrating case of this occurs during rainfall and at night when the fractional distillation column external temperature drops, greatly affecting the internal. Consequently, it becomes difficult to maintain a stable and optimum inte...
ABSTRACT Topsoil stripping, drilling and blasting extraction, waste rock dumping, loading, and unloading, crushing and screening, and materials transport are among other activities involved in iron ore mining. These activities produce fugitive dust that may contain heavy metals which deteriorate the quality of ambient air. They also cause noise and surface water pollution, not to mention their effects on the soil and vegetation. Corrosion is another issue observed in iron ore mining; corrode...
ABSTRACT Communication Protocols are the key tools for data transmission; most of them were defined for asynchronous data transport. Underpinning the Internet is the Internet Protocol (IP), which, has offered an ideal pathway for general Information Technology convergence with its capability of carrying large variety of signals (audio, control, voice, video, data, etc.). This thesis is on “the Design and Simulation of Audio Over IP (AoIP) frequency modulated broadcast studio system”. Us...
ABSTRACT From the inception of the oil and gas industry, water production has always been an aching problem for various operators. Throughout the productive life of a field, oil production is often accompanied with some amount of water production, which in most cases, is so significant and unwanted. Because of the great operating, environmental and economic challenges associated with excess water production, operators are in search for different methods and tools that could be used to identi...