ABSTRACT Pausinystalia yohmibe is a member of thefamilyRubiaceae. It is a valuable medicinal tree, distributed in evergreen closed canopy forests in West Africa. It is traditionally used for treatment mostly on erectile dysfunction. This research was carried out to evaluate the immunomodulatory effect of (Pausinystalia yohmibe) stem bark methanolic extract. The yohimbe extract has been reported for its medicinal use for the treatment of impotence in men and for its anti-oxidants effects bu...
ABSTRACT This study presents the modelling and optimization of a Hybrid Energy System (HES) for GSM Base Transceiver Station (BTS) sites in emerging cities. The aim is to ensure reliable and cost-effective power supply, considering the availability, dynamism and viability of energy sources. Theoretical approach is applied in the modelling, simulation and validation of the developed HES, which consists of the utility grid, wind and solar photovoltaic (PV) as primary energy sources incorporati...
The effects of temperature, dielectric constant and catalysis in the kinetics of the oxidation –reduction reactions (involving electron transfer) of N-(2-hydroxy-ethyl) ethylenediammine- N’,N’,N’-Triacetatocobalt (II) by Cu2+ cation were determined. The dielectric constant was decreased from 63.05 to 43.18 and it was found that the rates of the reaction did not show any appreciable change. This seems to mean that the change in the dielectric constant of the medium had no effect on ...
The project research entailed the production of high quality sealant incorporating a local raw material for sealing holes and gaps in various materials like metal and plastic. Two samples of acrylic sealants were produced, the first samples which is the standard formulations involved the use of silica gel as a major adhesion promoter and the second samples which is the research formulations involved the use of sand (sharp colourless sand with 59% silica/silicondioxide composition)) as a...
Abstract Car theft has become prominent all over Ghana in recent years. Despite its growing prominence throughout the country, measures to promptly recover stolen vehicles have often proved tedious and futile. To tackle this problem, this project aims to develop a remote control system and a model of a GPS tracking system which would together help vehicle owners swiftly recover their vehicles should the need arise. This was achieved by developing a mobile application to serve as an interface...
Abstract Vehicles provide an efficient way of transportation across the cities of Greater Accra in Ghana. Technology has impacted the transportation sector through variety of modes such as applications for routing. An example of this is the google maps mobile application. However, due to bad road networks and a time sequenced traffic control system in Ghana, traffic congestion is a major problem during peak times of the day. In cases of emergencies where a route needs to be created for emerg...
ABSTRACT Imagine a five-year-old boy losing his life by being knocked down by a drunk driver who has been intoxicated with alcohol. The driver’s carelessness will cause the family of the little child so much pain, as well as lead to a significant loss of human resources in the country. Road accident according to research has been the second leading cause of death in Ghana. While several countries in the world invest in finding solutions to road accidents [1], little is done by the country t...
AbstractThe main purpose of the project is to convert polyethylenetetraphylate (PET), a known plastic waste material in Ghana, to wealth. Composite samples were produced by heating aggregates together with shredded PET plastic waste material, while bitumen was added to the plasticcoated aggregates. The composites produced were of 4.5 wt%, 9.0 wt%, 13.6 wt% and 18.0 wt% concentrations of PET. Mechanical and optical characterisation of the fabricated composite samples were studied for optimizat...
Abstract The public transport industry is an essential part of people’s lives. However, the problem associated with the local public transport industry is, travellers usually get frustrated when waiting for a bus to arrive at a bus stop due to uncertainty on when the bus may arrive or if it may arrive at all. This leads to anxiety on the part of the traveller as well as time wastage, especially if this was not planned for in the trip. To solve this, historically GPS receivers are used in co...
Abstract Diabetes mellitus, also known as diabetes has on major effect on its patients. This is the effect of impaired wound healing. Patients thus get minor wounds such as small cuts which become non-healing and are liable to get infected. Severe cases of such occasions lead to amputations. A solution to this problem is tissue regeneration with the help of scaffolds. These scaffolds are made of biopolymers and promote cell adhesion, regeneration and minimal diffusional constraints. Computer ...
Abstract This report presents the optimisation of a ceramic-matrix composite (anthill sand and cement), reinforced with treated coir fibres for applications in the construction of a low costsolar powered cooking stove to solve the current trends in the depletion of forest spaces in Ghana due to excessive destruction as a result of using firewood for cooking by a higher percentage of rural communities. The reinforced coir fibres reduce undesirable traits in ceramics including, low fracture tou...
Abstract Streetlights are public goods that beautify cities, ensure safety for road users and security for city neighborhoods. A delay in streetlight maintenance jeopardizes the safety and security of many. Also, when streetlights stay on throughout the day, it wastes power and energy and increases cost. This project presents the design of a low-cost streetlight monitoring system based on LoRa technology. In the design, a Dragino LoraWAN 868MHz (LoRa/GSM) gateway module was used alongside one...
Abstract Fossil Fuels are currently classified as some of the leading producers of greenhouse gases which are major agents of Global warming. This study establishes the benefits Liquified Natural Gas (LNG) would have when used as a fuel in a hybrid-electric vehicle. The study establishes a Parallel-Hybrid vehicle model equipped with a control system to determine the mode of operation of the vehicle. Simulations using the vehicle models developed were performed in AVL Cruise. The results gener...
ABSTRACT PV modules exhibit a point at which its power is maximum; this point is called Maximum Power Point (MPP). Due to changes in weather conditions, the MPP changes and the PV module efficiency. Specifically, temperature and irradiance are the parameters that affect the solar panel characteristic properties. This project describes and implements an MPPT algorithm that tracks the MPP at every point in time depending on the load. The algorithm was modeled using MATLAB Simulink and tested un...
Abstract The issue of vehicle accidents occurring on the roads on a daily basis, which only seems to be increased by the minute is what this paper researches and seeks to tackle. With the simple technology that has been made available globally, a cost-effective system can be developed to fight overspeeding, reduce road accidents and save lives. As a result, in this project, an Automatic Number Plate Recognition program and a web service for speed detection were implemented. This was done with...