ABSTRACT The study was undertaken to measure the variational change in residual chlorine decay in water distribution network. A total of 330 water sample were collected at different periods of the day for ten days. Ten water sample locations at water stand taps, were taken for the study area in Calabar South Local Government Area of Cross River State, Nigeria. The effect of various Pipe diameter, water sample point distance, change in chlorine concentration with time on residual chlorine and...
Abstract Sediments resulting from soil erosion are the major non-point source pollutant of surface waters in agricultural watersheds. Annualized Agricultural Non-Point Source Pollution Model (AnnAGNPS) is a computer-based watershed model that predicts non-point source pollutants and runoff loadings within agricultural watersheds. AnnAGNPS v5.2 was used in conjunction with Arcview 3.2 GIS to predict streamflow and sediment discharges from a 250.89 ha agricultural watershed, Upper Ebonyi River...
ABSTRACT This study brought to the fore, a critical evaluation of the potentials of natural gas in the economic development of Nigeria. Natural gas option was considered the best alternative energy resource to other resources for optimizing income earning, indigent capacity building and the socio-economic development of an over populated Nigeria. Data and statistical reports from the various oil companies ere collaborated with the central bank economic report to determine the income generati...
ABSTRACT Automated Fish Feeder is a system, which focuses on aiding small scale fish farmers to feed their farms efficiently. By using Arduino and Internet of Things, this is made possible. This provides fish farmers with time and adequate information as the system is set to feed at several time intervals and send information through the internet should the feed container be low or empty . In addition, the system has so many potentials. The system can be embed into other systems such as a wa...
The internet is an unavoidable infrastructure that can provide enormous benefits to the average person/organization. Unfortunately there are elements whose goal is to interfere with the smooth benefits of it to users for either mischief or criminal intent. This has spawned a bourgeoning industry that focuses on developing and deploying countermeasures to the products of hackers and other internet pirates. Internet security is configured around several structural features that may be maintain...
Solar collectors mainly produced from poly-crystalline (P-Si) and micro-crystalline silicon (µ-Si) are in high demand in Nigeria due to persistent power challenges. The silicon are mostly imported and µ-Si is preferable due to its low cost. The µ-Si is extracted from Rice Husk (RH). However, the procedure of setting its optimal process variables (temperature, time and solvent volume) which are determinants of the reduction in cost is under reported in the literature. The aim of this study ...
Research on the single pot green synthesis of silver nanoparticles (AgNPs) was done using aqueous medicinal plant extract of Tithonia diversifolia and Acalypha wilkesiana. Characterization was carried out by spectroscopic techniques. Experimental optimization studies and the antimicrobial activity of the nanoparticles were investigated. Bottom-up approach was applied for the synthesis of both Tithonia diversifolia silver nanoparticles (TD-AgNPs) and Acalypha wilkesia silver nanoparticles (AW-...
The purpose of this project was to build a motion detector. The main components used were the Arduino microcontroller and the PIR sensor. The project also used an LED and a Piezo buzzer to indicate when motion was detected. The group sought to demonstrate the workings of each component as well as how they work together to carry out the task. The group also drew up a circuit from which the components were connected. The main objective for the project was to practice the skills learnt over t...
ABSTRACT This research work is aimed at using the energy and exergy analysis with thermodynamic data to suggest improvements in the performance of steam and gas turbine power plants. In this regard, specific data from Egbin steam power plant and Geregu I gas turbine power plant were used for the analysis. In the analysis, scientific tools such as Engineering Equation Solver (EES) programme with built-in functions for most thermodynamic and transport properties was used to calculate the entha...
ABSTRACT This research work on “Modelling and Simulation of Leakage-Induced Pressure drops along oil and gas pipelines tends to develop flow equations that can detect and localize leakages in oil and gas pipelines by modifying the Darcy-weisbach equation for liquid/oil flow, and the Panhandle B equation for natural gas flow in pipelines. These modified equations were simulated using matlab to show how flow rate values for the oil and gas pipelines vary when; the pipeline is working at full...
ABSTRACT This research work focused on the use of an hybrid RANS-LES turbulence model in simulating and checking the drag performance characteristics of an aerodynamic vehicle. The Spalart-Allmaras shear stress transport (SST)- Scale Adaptive Simulation (SAS) Turbulence model was selected for use, and with the help of OpenFOAM Finite Volume Computational Fluid Dynamic Solver the simulation algorithm was set and carried out in a total time step of 4000. Convergence was achieved under the stip...
Abstract A Mobile Ad-hoc Data Network (MADNET) is a self-configuring, infrastructure-less network of mobile devices (nodes) where nodes communicate with each other using multi-hop wireless links. Node failures and arbitrary movement of nodes at higher node velocity break the routes and lead to the frequent operation of rebuilding routes that consume lots of the network resources and the energy of nodes. This study, analyses the impact of node velocity on performance of two MADNET Transport p...
ABSTRACT This work analysed the performance of an automatic control system for the online blending of petrol with corrosion inhibitor in the direct, continuous electronic fuel injection automobile engine. The automatic control system was designed by superimposing a feedforward control system on a feedback control system. The design of the automatic control system was analysed by the method of direct substitution. The governing equations used in analysing the blending process, as well as the ...
ABSTRACT Environmental pollution with petroleum and petrochemical products has been recognized as one of the most important and serious challenges facing environment engineers. Disposal from mechanic sites, accidental leakages from petroleum carrying ships, vandalization of pipelines, have all contributed to the current common oil pollution in Nigeria today. The currently used physical and chemical remediation are effective for the degradation of petroleum products but the affected medium lo...
The present research discusses a problem of seal damages in dam gates due to influence of water flow through sluices passage way. The low level sluices (L.L.S) of Merowe dam were taken as a research field to investigate the influence of flow on the gate seal. The core of the problem is that the rubbery seal of L.L.S gates is damaged and washed out during yearly operation in flooding season. In previous years there is many solutions has been tried in two ways: first way is by improvement ...