Abstract Simulation of reliable solutions of nonlinear engineering problems by means of stable numerical algorithms is a frequent and acceptable practice. This study focuses the development and investigation of Range-Kutta coefficients dependent stability polynomial for the second, third and fourth orders Runge-Kutta schemes. The development utilized matrix inversion operation procedure that involves determinant and cofactors computation of relevant matrix. The validation was made referencin...
ABSTRACT This study exploited the possibility of new fractal creation in order to increase drastically the stock number of handy fractal images through the combination of limited base symmetric attractors' codes. the randomized play of chaos game with the iterated function systems (IFS) comprising a finite set of contractive affine maps coupled with simple coordinate transformation and linear superposition provides a framework for the new fractal image creation.
Abstract The aim of home automation is to control home devices from a central control point. In this paper, I present the design and implementation of a low cost but yet flexible and secure internet based home automation system. Nowadays, Internet has spread worldwide and most of the internet connections use Ethernet as media for data transfer. In industries or in home appliances, most of the time we need to monitor and control different parameters using microcontrollers. The popularity of ho...
Table of Contents CHAPTER 1 ................................................................................................................................................................... 3 1.1 Background to the study......................................................................................................................................... 3 1.2 Problem statement .....................................................................................................................
ABSTRACT The advent of technology has made life easier, smooth and smarter. Smart phones are being applied in all aspects of life, be it Medical field, Military, Aviation or Agriculture. Agriculture is one of the key drivers of Zimbabwe`s Economy. The majority of Zimbabweans venture into farming for both personal sustenance as well as sustenance of the nation as a whole. Small farming projects are being carried out in the backyards of urban areas. People have resorted to growing Potatoes, Bea...
ABSTRACT The pharmaceutical supply chain in Zimbabwe and abroad is wrought with unscrupulous traders who have flooded the medical market with illegal, tampered and falsely labelled counterfeit drugs. The risk posed by these products has proved to be fatal to patients in recent years; and this is only the beginning of the problem. The local generic pharmaceutical industry has been dealt a huge blow due to the open boarder trading and excessive importation of falsified medicines into the countr...
ABSTRACT Considering mobile wireless networks in Zimbabwe, most base station wireless antennas are positioned in a three sector sequence, which is always symmetric and rigid. NetOne Zimbabwe always maintains this setup while Econet takes a step further by conducting RF optimization and re-arrange the azimuth, the engineers and riggers travel to the site to make alterations and it becomes an extra unexpected expense to the company. This calls for the need to come up with an automatic system th...
ABSTRACT The toll collection system currently used in Zimbabwe is an open system whereby toll levies are collected manually by toll collectors at various tollgates across the country. This system has negative effects on both the drivers and passengers as it causes time delays and traffic congestion at tollgates especially during public holidays where traffic volumes are enormous as people will be travelling. The Tollgate Collection System using RFID Technology project will eliminate hard cash...
ABSTRACT Biological and antioxidant activities of Dicoma anomala, Kigelia pinnata, Pseudolachnostylis maprounelifolia and Flacourtia indica are reported. The medicinal plant extracts of different polarities were prepared and tested for antimicrobial activity using the disc diffusion method. The acetone crude extracts showed the highest activity as compared to the chloroform and petroleum ether extracts. The qualitative analysis of the extracts showed presence of tannins, saponins, phenolics, ...
Abstract The dissipation of information is an essential aspect of any community. The advent of media services such as television and radio has improved the way information has been broadcasted to the general public. Unfortunately in Zimbabwe Universities, these services have not yet been utilized. This Dissertation illustrates a prototype of campus radio streaming system over an intranet. This is to provide local universities with a cheaper alternative to providing a local radio station compa...
ABSTRACT A comparative analysis of the efficiency of activated carbon produced from Berchemia discolour seed shells derived activated carbon (BDSAC) and commercial grade activated carbon (Haycarb Carbon) was utilized in the adsorption of gold (iii) chloride from acidic medium. The adsorption process of BDSAC was best described by the Freundlich, Halsey, Dubinin Radushkevich (D R), Temkin isotherms and Langmuir isotherm had RL values in the range 0 < RL < 1 hence the adsorption process was fav...
Abstract In general, the electrowinning process consumes substantial electrical energy. Considering the ever-increasing unit cost of electrical power there is a need to improve current efficiency so that electrical energy is utilised efficiently. In light of the research/knowledge gap identified, this research aims to design a continuous quality improvement framework for improving electrowinning current efficiency. The objectives of this research are as follow: (i) To explore factors that inf...
Abstract A novel study on biomass-air gasification using a horizontal entrained-flow gasifier and catalytic processing of the product gas has been conducted. The study was designed to investigate the effect of catalyst loading on the product gas. The use of a horizontal entrained-flow gasifier reactor was used to assess the effect of the gasifier reactor orientation on the gasification process. Both experimental and computational fluid dynamics (CFD) approaches were employed. The gasifica...
ABSTRACT Ascorbic acid and dopamine are biomolecules found in humans. They both have important functions in the body and cause numerous side effects at high concentrations. An electrochemical sensor based on nickel( II) tetra amino phthalocyanine conjugated to iron oxide doped graphene oxide nanosheets was developed.FTIR,UV- vis, cyclic voltammetry ( CV) and electrochemical impedence spectroscopy (EIS) were used for characterisation of electrode modifiers.FTIR was used to ascertain that a che...
ABSTRACT Prior studies have identified many problems of having poor water sanitation system. The major problem being rise of water-borne diseases. This thesis is an advancement to an argument that the leading root cause of the water-borne disease outbreaks in Zimbabwe was the unsustainable urban environmental practice especially in the water reticulation system. The overarching purpose of this project is to give a solution to a case in which the failure in proper water reticulation system in ...