Research Papers/Topics in Nuclear Sciences

Studies of Essential and Non-Essential Elements in Cereal Based Weaning Foods for Infants Commercially Available on the Ghanaian Market

ABSTRACT Cereal-based weaning foods, which abound on the Ghanaian market, are nutritionally vital in the growth and development of infants. Recent reports in scientific literature however indicate that rice and other cereals used in the manufacture of the weaning foods contribute significantly to the intake of arsenic (As), cadmium (Cd) and lead (Pb) by infants. In view of this, frequent monitoring of the cereal-based weaning foods has become imperative. The study assessed the beneficia...

A Theoretical Study Of The Production Of Technetium-99m ( 99mtc) Using A Cyclotron

ABSTRACT A theoretical study of the production of Technetium-99m (99mTc) using a cyclotron has been conducted. A nuclear reaction model code (Talys code) was used to generate reaction cross sections as functions of particle energies for 100Mo (p, 2n)99mTc reaction channel which would lead to the direct production of 99mTc. Excitation function for the desired reaction channel for the production of 99mTc and excitation functions for the reaction channels of competing products (contam...

Assessment Of Radiological Doses Associated With Natural Radioactivity From Soil In The Communities Close To Uranium Mines In Namibia

ABSTRACT Primordial radionuclides are ubiquitous in the environment and they exist in different ranges of concentration levels in minerals. Some human activities such as uranium mining can result in a rise of concentration of naturally occurring radioactive materials (NORM) and lead to exposure conditions. This necessitates a need to radiologically map and determine the extent of exposure of people who work in the mines and communities that live nearby as they can be the primary exposed...

Assessment Of Naturally Occurring Radioactive Materials And Trace Elements In Playgrounds Of Selected Basic Schools In The Ga East Municipal District, Accra, Ghana

ABSTRACT The 235U, 232Th series and natural 40K are the main source of natural radioactivity in soil and have long half-lives up to 1010 years. Therefore their presence in soils and rocks is simply considered as permanent. Also due to rapid urbanization, most of Basic School playgrounds in Accra are built close to major roads or industrial areas for which they are subject to many potential pollution sources, including vehicle exhaust and industrial emissions.. A study has been carried o...

Using Ultrasonic Testing in Determining the Degree of Symmetry of a Steel Slab

AbstractThis work aims and explaining scientifically that Non- destructive testing plays an important role in the quality control of a product. It is used during all the stages of manufacturing of the products. It decreases the cost of the product by reducing scrap and conserving materials, labor and energy. NDT is used for detecting the leakage in pipelines for oil and natural gas, oil tankers, aero planes, aero space, measuring the thickness of steel and allo...

Use Of Gamma Rays In The Medical Field

Table of ContentsContentPagePrefaceiDedicationiiAcknowledgementsiiiTable Of ContentsivChapter One: Research plan1Introduction1Problem of The Research1Importance of The Research1Objectives of The Research1Content ofThe Research2Chapter Two: Ionizing Radiation3Definition3Types of Ionizing Radiation3Penetration of Ionizing Radiation6Physical Effects7Uses10Background Radiation10Radiation Exposure10Occupational Exposure11Public Exposure11Chapter Three: Gamma Ray13History of Discovery13Sources of G...

An Evaluation Of The Natural Radioactivity In The Soils Of Okahandja And Karibib, Namibia

ABSTRACTThe natural radioactivity and associated hazards in the soils of the towns of Karibib and Okahandja have been studied by gamma spectroscopy. Each town was divided into ten geographical areas and five soil samples were collected across each area. These samples were processed and placed in well-labelled 500 ml plastic bottles. A High Purity Germanium detector (HPGe) was used to measure the gamma ray spectra of the samples. The intensities of selected gamma lines were used to calculate t...

Assessment Of Natural Radioactivity In The Soils Of The Ohorongo Cement Plant And The Town Of Otavi, Namibia

ABSTRACTThe activity concentrations of the naturally occurring radionuclides 238U, 232Th, and40K in soil samples collected from the Ohorongo Cement plant and the town of Otavi,Namibia have been determined using a High-Purity Germanium (HPGe) detector. Inaddition, an assessment of the radiological hazards due to these natural radionuclidesin the soils of the plant and town was carried out. The plant was divided into threegeographical areas, and fifty soil samples were collected across the area...

Resting Behaviour of Endophilic Anopheline Vectors in Three Ecological Zones of Southern Ghana and its Implications for the use of Entomopathogenic Fungi

ABSTRACTThe aim of this study was to determine the resting behaviour and factors thatinfluence the choice of resting sites by endophilic anopheline mosquitoes in southernGhana. The study was carried out in six villages across three ecological zones ofsouthern Ghana, including: the forest ecological zone (FEZ), the coastal savannahecological zone (CSEZ) and the forest-transition ecological zone (FTEZ). For everymosquito collected, the indoor resting sites was characterised and microclimate at ...

Hydrogeochemical And Isotopic Studies Of Groundwater In Coastal Aquifers Of Ghana: Case Study In The Central Region

ABSTRACTThe major setback in the exploitation of groundwater in the Central Region of Ghana ispoor water qualitydue to high salinity. The source of salinity has not been adequatelyaddressed. The focus of this study was, therefore,to understandthe hydrogeochemicalprocesses occurring in the study area in order to determine the origin of salinity andgroundwater residence time. The methodology involved desk study, fieldwork, andlaboratory work. The desk study comprised review of literature, compi...

Studies Of Rare Earth Elements And Associated Radioactivity In The Coastal Sand Of The Central And Western Regions Of Ghana

ABSTRACTBeach sands are known host of different heavy minerals, which occur mostly as placerdeposits and are of great importance to the electronics, metallurgy, medical, defense,and automobile industries. Typical examples of such heavy minerals are the rareearth-associated minerals (e.g. monazite, bastnaesite, xenotime and euxenite). Someof these rare earth elements-containing ores are known to occur in association withnaturally occurring radioactive uranium (U-238) and thorium (Th-232). Limi...

Design And Production Of A Proton Exchange Membrane Fuel Cell For The Production Of Brown’s Gas

ABSTRACTThe use of petroleum products (fossil fuels) has raised a lot of environmental concerns overthe past years. This is due to the fact that most of the machines and devices manufacturedare engineered to use these conventional fuels which include petrol, diesel and natural gas.However, these fuels substances pollute and deteriorate the quality of the environment.Some of these pollutants include sulphur oxides, nitrogen oxides, particulate matter, andozone.These gases are called greenhouse...

Numerical Simulation of Dispersion of Emissions from Tema Oil Re nery

AbstractThe petrochemical industry is a major contributor of industrial air pollutantswhich are known to have dire consequences on human health andthe environment, neccesitating research into their dispersion and transport.The objective of the study, therefore, is to simulate the dispersion and transportof pollutants emitted during the processing of crude oil by the TemaOil Re nery in the Greater Accra region of Ghana using the CaliforniaPu (CALPUFF) modeling system. This thesis couples the ...

Assessing the Effectiveness of Limestone from Oterkpolu Area in the Eastern region of Ghana as a Suitable Adsorbent for Water Defluoridation

ABSTRACTFluoride-contamination of groundwater [above the World Health Organization (WHO) recommended limit of 1.5 mg/L] in the Upper East and Northern regions of Ghana is a well-known problem. Fluoride is, however, beneficial to humans if present in drinking water at levels between 0.7 – 1.5 mg/L. Although, there are some efficient methods for defluoridation of drinking water using various adsorbents, the magnitude of the problem has made it imperative to develop economically viable water d...

Studies Of The Effects Of Gamma Irradiation On The Microbial Load And Physicochemical Properties Of Ghanaian Honey From The Ashanti, Brong Ahafo And Greater Accra Regions

ABSTRACT Honey is a universal product with a wide usage throughout the life spectrum. It is a substitute for sugar for many people, an energy booster, helps maintain the blood sugar level and research has shown that it has the potential for cancer prevention. The high sugar concentration of honey and its low pH gives honey antimicrobial properties and makes it difficult for microorganisms to grow. However, research has provided evidence of the presence of microbes in honey. The microbes...


1 - 15 Of 59 Results