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With rapid growth in the use of automated teller machines (ATMs), there is need to develop secure, robust and reliable schemes to securely/correctly authenticate users. The conventional ATM authentication schemes available are mostly cryptographic based and …
This paper studied the influence of water/cement ratio on the flexural strength of concrete made with unwashed local gravel from Abagana in Anambra state. In the research work, concrete beams of dimensions 600mm x 150mm x150mm —three for each experimental po…
This paper presents an interactive M-file algorithm capable of running in a MATLAB environment, which can estimate the number of theoretical plates a distillation column ought to contain at total reflux to efficiently separate a multicomponent mixture into t…
Induction motor is the most widely used electromechanical machine due to its low cost and minimum maintenance. It has more losses, less efficiency and high power consumption when working at variable speed. The influence of these motors (in term of energy con…
This paper focuses on the analysis of Owerri network using load frequency control. The LFC is further analyzed using fuzzy logic controller and neural network controller for optimization. The result is compared and relevant conclusions are drawn. Applying a …
This study is on the susceptibility of AISI 304L austenitic stainless steel welded joints to localized pitting corrosion in sea water. AISI 304L is more resistant to corrosion primarily because of its low carbon content. This makes it less susceptible to wel…
The production of biodiesel from waste ube oil was carried out through a two step process of esterification and transesterification reaction. The kinetics of the esterification of free fatty acid (FFA) in the waste ube oil with methanol, in the presence of S…
Correct sensing, transmission and display of revolution per minute (rpm) speed of shafts is very important for smooth running and control of induction motors. Speed sensors sense shaft speed. Therefore, sensors are a critical component in a motor control sys…
This work is on the optimization of the inhibition efficiency of bitter kola leaf extract as corrosion inhibitor of mild steel in H2SO4. Gravimetric method was employed in the corrosion inhibition study. It was supplemented by Fourier transform infrared (FTI…
A two step process consisting of esterification and transesterification was developed to produce biodiesel from crude waste ube fruit oil. The oil was extracted from the waste ube pulp using solvent extraction process. The free fatty acids (FFA) in the oil w…
Fingerprints, an impression left by the friction ridges of a human finger are an important part of the studies of forensic science. They are deposited and left everywhere on suitable surfaces (such as: glasses, metals, and/or polished surfaces) by some natur…
The tensile properties of randomly oriented short fiber lengths from agricultural based plant stems ramie fiber/epoxy composites are described for the first time in this work. Composites were fabricated using raw ramie fibers with varying fiber weight percen…
Anambra State has been horrendously ravaged by a devastating erosion onslaught dating back to the early 20th century. Erosion is concerned with the destruction and carrying away of top and sub-soil by the forces of wind, water and other forms of precipitatio…
The action of a power system stabilizer (PSS) is to extend the angular stability limits of a power system by providing a supplementary damping to the oscillation of synchronous machine motors through the generator excitation. PSS controller design, method of…
Global System for mobile Communication (GSM) is a telecommunication network that is used globally for communication services such as voice communication, data connection for fax, short message service (SMS) and full dial-up connection to the internet for e-m…
Global System for Mobile Communication (GSM) is a telecommunication network that is used globally for communication services such as voice communication, data connection for fax, short message service (SMS) and full dial-up connection to the internet for e-m…
This research work set out to develop decaying exponential models for predicting the setting time of concrete as a function of its penetration by proctor needle using common sugar as the admixture. Various percentages of sugar by weight of cement (0.01% —1%)…
Water we all know is the most vital and prominent need of man. However, its unbelievable effect in 2012 across the whole of West Africa showed that it can also cause untimely death, havoc, disaster and poverty when in excess. The Nigerian hydrological servic…
Dam projects are very costly projects all over the world. Also, in case of dam failure, the effect is always catastrophic and devastating. This leads to loss of human lives and devastating environmental effects. In view of these, it is required that dam proj…
Power system engineers face difficulty in economic operation of large inter-connected power systems. Economic Load Dispatch (ELD) of large inter-connected power system is complex, constrained and non-linear problem which require rigorous and complex calculat…