ABSTRACT The analysis of macro and trace elements in selected snacks available in the Federal Capital Territory (FCT), Nigeria showed varied concentrations of the essential elements (Fe, Cu, Ni, Zn, Mg, Ca, K, Na, Mn, Cr) and non-essential elements (Pb, Cd, Hg, Co) in the fifteen different samples (Meat-pie, Bread, Cake, Doughnut, Scotched egg, Sausage, Samosa, Spring Roll, Scones, Egg Roll, Akara, Buns, Okpa, Fish Roll, Chicken pie) analyzed. Potassium and Sodium were determined using Flam...
ABSTRACT This research work presents the static analysis of short cylindrical shell under internal liquid pressure with various boundary conditions and aspect ratios. Improved fourth order finite difference method was employed for the analysis and a MATLAB computer program was developed based on the matrix equations and models generated from the analysis. The following boundary conditions were covered in this research; short circular cylindrical shell simply supported at both edges(s-s), sho...
ABSTRACT Equal channel angular pressing (ECAP) has over the years been used as a severe plastic deformation method to refine the grains and improve the strength of various metals. Even though this has been largely successful, research over the years has tried to increase the amount of strain induced in the materials used during this process so as to further increase the strength. In this research, an additional 30o twist angle was incorporated into the outlet channel of one of the ECAP dies ...
ABSTRACT Electrochemical capacitors (ECs) or Super capacitors (SCs) are energy saving devices which have excellent properties that include high power density, long cycle life, low temperature sensitivity and low maintenance cost. However, these devices have lower energy densities than conventional batteries. To improve on its energy density, SnO2 which is a metal oxide was considered as an electrode material because of its chemical inertness and thermal stability. SnO2 nanoparticles were syn...
Primarily, the team will attempt to develop the application that the user can use it to monitor the daily energy consumption in their home. The application could generate reports data dividing by quarter or week to help users understand the source of specific energy consumption, thereby helping users save the cost of energy and protect the environment. The “big picture” of the business and the application creates an environment that enables people to live up to the values we seek to ...
The Engineering Characterization of Agbani clay deposits has been investigated with a view of finding its usefulness in the engineering industry and home. The chemical analysis was carried out using X-ray fluorescence (XRF). Physical properties tests such as apparent density, apparent porosity, water absorption, shrinkage, modulus of rupture, bulk density, moisture content, conductivity, thermal shock resistance and specific gravity were all carried out using international accepted standa...
Abstract The paper seeks to provide technological solutions to the security issues bedeviling Nigeria and its environs using technical tools and partnerships with the right international institutions to handle public safety issues. Some of the areas where the paper seeks to profer solutions are partnership, use of telecommunication services, having a unified database for every citizen and people living in Nigeria, and provision of facial recognition devices to combat these crimes. Keyword...
This research work focuses on the comparative of FET and Bipolar power transistor performance in amplifiers. Field effect transistors (FET) have been widely used as transducers in electrochemical sensors for over 40 years. In this report, a FET transducer is compared with the recently proposed bipolar junction transistor (BJT) transducer. Measurements are performed on two chloride electrochemical sensors that are identical in all details except for the transducer device type. Comparative meas...
ABSTRACT A vehicle such as a large truck Can generate electricity for operating a hybrid engine or recharging batteries by use of an electricity generating driveshaft. The electricity generating driveshaft is comprised of a magnetized driveshaft which acts as a rotor, and a series of copper wire coils surrounding the magnetized driveshaft which acts as a stator in an electrical generator. As the magnetized driveshaft spins as a result of power from the hybrid engine, an electrical fiel...
The engineering characterization of Ogbeke clay deposit has been investigated with a view of finding its usefulness in furnace refractory production and home. The chemical composition analysis was carried out using Atomic Absorption Spectroscopy (AAS). The physical properties tests such as shrinkage, porosity, water absorption, modulus of rupture, refractoriness, moisture content, plasticity, cold crushing strength, thermal shock resistance and particles size analysis were carried out using i...
This research was designed to comparatively analyze practical skills acquisition in the Electrical/Electronic Engineering department in Accra and Kumasi Polytechnics. The study population was made of 578 students in the Department of Electrical/Electronic Engineering from the two study institutions respectively. A sample size of 25% was randomly selected from the total population. A total number of 145 questionnaires were distributed and 123 completed questionnaires were received making a res...
This thesis is aimed at improving the availability of the New Haven-Onitsha 330kV transmission line byusing an adaptive PMU based insulation defect detecting and location scheme. The exposed nature ofoverhead power lines makes overhead power transmission lines very vulnerable to various kinds of faults.Insulation-related faults contribute reasonably to the number of faults experienced in overheadtransmission lines. These faults cause outages in the network and reduce the availability of thetr...
The Clay deposits has been investigated for its industrial potentials. The chemical analysis was determined using Atomic Absorption spectrophotometer (AAS). The physical properties conducted such as linear shrinkage, apparent density, apparent porosity, bulk density, water absorption and modulus of rupture were conducted using standard technique. The results on the chemical composition of the clay composed of Al2O3 (29.10%), SiO3 (53.04%), Na2O3 (2.15%), MgO (1.15%), Fe2O3 (1.70%), CaO ...
Overtime weight loss and sprouting of yam tubers during storage had been creating issues among farmers and storage Engineers. Interaction of energy with matter has tendency of bringing change in the matter. To establish the effect of mechanical vibration on the physical properties of yam tubers and sprouts; this study therefore developed mechanical yam vibrator with adjustable frequency and amplitude at Federal University of Agriculture, Abeokuta, Ogun Nigeria. A mechanical yam vibrator ...
CFD investigation of mesh, boundary condition and location, and the effect of turbulence models on the turbulent separated flow over a forward-backward-facing step. A numerical model was set up to replicate and compare with the model in the literature. The Reynolds number, Re, is 1.7E5 based on step height 50 mm and obstacle length L = 10H. The freestream velocity of air at the inlet is 50 m/s. The simulation was performed using the ANSYS software.