ABSTRACT Numerous failures and eventual losses in the chemical industry have been traced to corrosion processes. Failures resulting from the inability of metals to support designed load requirements because of losses imposed by corrosion effects can be combated economically through the use of chemical inhibitors. Despite the fact that synthetic inhibitors are effective, nonetheless they are associated with problems of toxicity, disposal, litigation and enormous costs. In order to protect the...
ABSTRACT Rate decline analysis is an essential tool in predicting reservoir performance and formation property estimation. The use of historical production data to predict future performance is the focus of the empirical domain of decline analysis while the theoretical domain focuses on the use of such data to estimate formation properties. A number of attempts have been made to establish the theories of rate decline in solutiongas drive reservoirs. Such attempts have established the theoreti...
ABSTRACT Power system voltage instability often results in voltage collapse and/or system blackout which is a source of concern for power network operators and consumers. This work proposes a new line stability index that is suitable for investigating the voltage stability condition of Power System Networks (PSNs). This index, which is called the New Line Stability Index-1 (NLSI_1), is derived from first principles and shown to incorporate the Line Stability Index (Lmn) and the Fast Voltage ...
ABSTRACT The design of switched local area networks in practice has largely been based on heuristics and experience; in fact, in many situations, no network design is carried out, but only network installation (network cabling and nodes/equipment placements). This has resulted in local area networks that are sluggish, and that fail to satisfy the users that are connected to such networks in terms of speed of uploading and downloading of information, when, a user’s computer is in a co...
ABSTRACT The purpose of Maintenance is to extend equipment life time or at least the mean time to the next failure. Asset Maintenance, which is part of asset management, incurs expenditure but could result in very costly consequences if not performed or performed too little. It may not even be economical to perform it too frequently. The decision therefore, to eliminate or minimize the risk of equipment failure must not be based on trial and error as it was done in the past. In this thesis, ...
ABSTRACT Power system stabilizers and other controllers are employed to damp oscillations in power systems, thereby guaranteeing satisfactory dynamic performance following major network disturbances. However, the parameters of these controllers are often tuned based on the power system linearized model which generally is a function of the system operating point or state. These controllers suffer from poor performance when the system state changes. The aim of the research work reported in thi...
ABSTRACT This Project report presents details of the design and construction of a microcontrollerbased automated intelligent street lighting system. The circuits are designed specifically for self-intelligence and fault detection of the system. The street light system consists of two circuit boards; the main printed circuit boards and the street light pole printed circuit board. The major components of the main printed circuit board are PIC microcontroller, GSM module, voltage translator, mu...
ABSTRACT A power system is set up basically to meet the demands of the customers. However, interruptions which are largely unavoidable contribute to the unavailability of power and thus prevent power system from achieving this. In most cases, it is the sustained interruptions that greatly affect both the utility company and its customers. Hence, it is necessary to find means of determining which component failure contributes most to the unavailability of the distribution system, and how t...
ABSTRACT Body amour describes the object that is worn or carried to provide an individual protection against external energy. This research work was carried out to formulate powdered alumina for body amour application. Alumina powder (Al203), magnesium oxide (MgO), calcium oxide (CaO) and polyvinyl alcohol (PY A) were the materials used in the formulation procedure for the research work, the materials were mixed thoroughly to form six different formulation samples; binder and alumina po...
Abstract Covenant University aspires to be one of the ten leading university in the world by 2022. To achieve this noble goal, the university has set in motion various strategies, some of which are to improve the learning process of students, empowerment of faculty and staff in gaining skills in teaching methodologies and the use of e-learning/new technologies. The university has currently invested a lot of funds in the acquisition of relevant and contemporary e-learning technologies, such a...
ABSTRACT This project presents the design and construction of a microcontroller based Automatic Transfer Switch (ATS) for a single phase system. The ATS, which is based on a switch gear control system, gives a functional system that provides an automatic switching of power supply between a primary source (public utility) and a secondary power source (generator). The methods employed in designing the ATS involve the use of switching and power relays, Atmega8 microcontroller, diodes, resis...
ABSTRACT Not only do soils serves as underfoot" for roads, airfields. train tracks, and houses that sustain our complex society: Engineers, typically geotechnical engineers, classify soils recording to their engineering properties as they relate to its use as foundation support building material. The study of geotechnical characterization of soils in Ikole-Ekiti, Ekiti State was carried out to determine the index properties and strength properties of the soil. The laboratory test carried ...
ABSTRACT Domestic water supply is a daily necessity and key factor in human health and well-being. Without water, life cannot be sustained and lack of access to adequate water supplies leads to wide spread of diseases with children bearing the greatest health burden associated with poor water quality and sanitation. Drinking water is water that is of sufficiently high quality so that it can be consumed or used without risk of immediate or long term harm. Asin-Ekiti community is situated in I...
ABSTRACT Sand has traditionally been used as fine aggregate in structural concrete. It is usually imported from relatively distant places at high costs, and this increases the overall cost of making concrete and of providing housing in various Nigerian communities. This study investigates the performance of 409/o of laterite as fine aggregate in place of sand, and specifically seeks to determine whether lateritic concrete containing pies would satisfy the minimum compressive strength require...
ABSTRACT Auscultation is a technique, in which Physicians used the stethoscope to listen to patient’s heart sounds in order to make a diagnosis. However, the determination of heart conditions by heart auscultation is a difficult task and it requires special training of medical staff. On the other hand, in primary or home health care, when deciding who requires special care, auscultation plays a very important role; and for these situations, an ‘‘intelligent stethoscope’’ with decis...