ABSTRACT Home/ Bank/ Office security has been a major issue where crime is increasing and everybody wants to take proper measures to prevent intrusion. The project is aimed at developing the security of home against Intruders. In a case of intrusion while the user is out of the house, then the device sends SMS to the emergency number provided to it and also display it on LCD connected to it. The paper consists of a background into the area At mega 2560 microcontroller, sensing elements and GS...
ABSTRACT This research is based on the modification of a glassy carbon electrode with cobalt (II) tetra carboxy phthalocyanine and nitrogen doped graphene oxide nanosheets composite (CoTCPc/N-GONS) was used for the electrocatalytic oxidation of nitrites. The synthesised cobalt (II) tetra carboxy phthalocyanine (CoTCPc) and nitrogen doped graphene oxide nanosheets (N-GONS) were characterized by FTIR spectroscopy, UV-Vis spectroscopy, electrochemical impedance and cyclic voltammetry. The electr...
ABSTRACT The study was conducted in Mbarali District of Mbeya Region with the objective of assessing the average annual utilization rates of farm tractors for both on-farm and off-farm activities during the cropping season of 2012/13. The study conducted aimed at addressing the following research questions: who are the owners of farm tractors in the study area, what models were in use and what were the available support services that could enhance sustainable utilization of tractors? Question...
Abstract This dissertation analyses the use of RFID cards as e-passports instead of the conventional paper passport booklet with an embedded chip as the e-passport. Advancement in technology comes with so many possibilities that all information can be stored electronically. The purpose is to limit the use of counterfeit documents. This in turn will prevent illegal entry of the traveller into any specific country at the same time maintaining the privacy and personal security of the e-passport ...
ABSTRACT In many types of buildings, both single and multi-storey, including schools, offices, places of worship, factories and residential buildings, the attic space is often given paramount consideration because its thermal characteristics have great influence on the conditions of the space directly below it. A significant amount of the cooling load in residential and industrial buildings is the result of heat transfer across the ceiling from the attic. Also, in some rural areas in the trop...
Compliant mechanisms (CMs) above the traditional rigid-body mechanisms have the sole merit of no relative moving parts hence preventing any form of wear, backlash, noise and need for lubrication. Its applications are versatile and fully domicile in such sectors as medicine, robotics, aerospace, biomechanics, food processing and automotive industries to mention a few. The Pseudo Rigid Body (PRB) equivalence of compliant mechanisms have been the conventional approach used by earlier researchers...
ABSTRACT The biodesulfurization of diesel and kerosene was investigated. Soil samples were taken at various points of the Ijora petroleum products haulage terminal, in Lagos, Nigeria. Microorganisms capable of selectively abstracting sulfur from diesel and kerosene without reducing their fuel values were isolated by using a sulfur-reducing selective medium. The choice of the sulfur selective reductive pathway is informed by the fact that it is sulfur specific and so the calorific value is ma...
ABSTRACT The laminar free convective heat transfer characteristics of parabolic enclosures have been investigated using numerical computation and experimental modeling methods. The geometry is a long cavity made up of a parabolic wall bowed over a horizontal wall. Due to symmetry, the analytical model is one half of a two-dimensional cross-section consisting of a hot parabolic upper-wall, a cold horizontal base-wall of width B, and an adiabatic vertical wall of height, H. Two cases of heat-in...
ABSTRACT The Asymmetrical Single - phase drive has an input power factor problem over its control range. With the race towards industrialisation, power networks in developing economies would face increasing power factor problems with extended application of these drives in industrial and traction systems. This project investigates the assertion that power factor of supply networks with multiple drives deteriorates with increased number of drives. The power factor problem is established analy...
INTRODUCTION The objective of this work is first to determine experimentally the horizontal and vertical force components of the operative forces during soil cutting. Since previous work in soil cutting had been empirical and involved curve fitting techniques therefore the second objective is to predict these horizontal and vertical force components. In order to achieve these objectives a special apparatus was designed and fabricated for experimentation. It comprises the soil bin, the horizon...
ABSTRACT The march of globalization and international trade has brought into focus the need for the measurement of quality as an essential element for customer satisfaction. Earlier approaches to quality control based mainly on end product testing are no longer considered adequate enough as quality must now be assured at every developmental or production stage to guarantee quality product at the end. Thus, non-subjective and non-destructive methods are receiving attention especially where the...
Abstract The GSM Based Water Distribution Monitoring and Control System improves the water distribution by providing the automation of water levels in the tanks and monitoring and control of water flow in the distribution network. Water sensor detects the water level in the tanks and then sends signal to the microcontroller unit for actuation of valve and pump. The water monitoring system can detect leakages in the distribution pipeline. If a leakage occurs, an upstream solenoid valve autom...
ABSTRACT High concentrations of methylene blue (MB) in aqueous environments have detrimental effects to both plants and animals and hence its removal is very important. Metal-Organic Framework, HKUST-1 and composite, CuO@HKUST-1, were synthesized and characterised for their functional groups before and after degradation of methylene blue. Studies were done to optimize the degradation of methylene blue and to characterize the degradation system with respect to photocatalytic degradation kinet...
ABSTRACT The investigation of nitrate adsorption onto Brachystegia spiciformis leaf powder from waste waters was performed. Characterization for the functional groups of the biomass before and after nitrate sorption as well as after desorption was done using an FTIR spectrophotometer. The effect of pH, contact time, dosage and initial nitrate concentration was investigated. The Brachystegia spiciformis leaf powder had amine, carboxylic and hydroxyl groups that were involved in nitrate remova...
ABSTRACT The activity of indigenous microbial system is a required tool to remediate an environment that has been contaminated by hydrocarbons. This work deals with the dynamic response to crude oil contaminants of undefined microbial systems in three selected communities of the Rivers State of Nigeria. The activities of indigenous (undefined) consortia were studied and compared using Respiratory technique. The soil samples were incubated with 2 % ( 𝑣⁄𝑣)crude oil in mineral salt medi...