Research Papers/Topics in Radiation and Protection

Developing and Validating of Predictive Model for Radiofrequency Radiation Emission Within the Vicinity of Fm Stations in Ghana.

ABSTRACT  The rapid growing number of FM stations with their corresponding antennas have led to an increase in the concern of the potential health risks that may arise as a result of exposure to RF radiations. The main objective of this research was to develop and validate a predictive model with real time measured data for FM antennas in Ghana. Theoretical and experimental assessment of radiofrequency emission due to FM antennas has been analysed. The maximum and minimum electric field spat...

Investigations into The Shelf Life and Nutritional Quality of Fresh Tomato Fruit (Solanum Lycopersicon) Following Two Post - Harvest Treatments.

ABSTRACT  Tomato production in Ghana is characterized by a glut and high post – harvest losses during the major season followed by scarcity and high prices during the off season. This is the result or absence of a standard method for preservation of fresh fruits. This research was conducted to determine an effective method for the post - harvest treatment of fresh tomato fruits to enhance shelf life while preserving its physicochemical and nutritional properties. Two experiments were condu...

Risk Assessment of Occupational Radiation Dose at The Teletherapy Facility of the Korle-Bu Teaching Hospital Ghana

ABSTRACT  The National centre for Radiotherapy and Nuclear Medicine at the Korle-bu Teaching Hospital in Ghana uses a Theratron Equinox 100 Cobalt-60 teletherapy machine that was commissioned in 2014 with a source activity of 370.4TBq. The prime objective of this research was to estimate the risk and probability of cancer induction to workers and also to evaluate the level of radiation safety at the facility. Data was collected by means of TLDs and personal dose records available between the...

Computational Hydrodynamic Modelling of the Fate and Impact of Natural Radionuclides in Liquid Effluent Discharges from The Gold Processing Plant at Aboso Goldmines in Damang Tarkwa, Ghana

ABSTRACT Transport of radioactivity in surface water of mine-origin can occur either due to a controlled release from a working mine site (e.g. release of excess stored water) or uncontrolled release (e.g. erosion of material from a site). The radionuclides could concentrate during mining and mineral ore processing and incorporate in water bodies or traditional food stuffs, and thus contribute to the radiation dose received by the public. Eulerian approach to Partial Differential Equations (...

Modelling Radionuclides Transport and Fate in Groundwater Systems: A Case Study of Newmont Akyem Goldmine in Ghana

Abstract It has been established that radionuclides accumulate during mining and mineral ore processing, leaching into water bodies and thus increases naturally occurring radioactive materials (NORM) concentration levels. In this work, theoretical and experimental methods have been used to study radionuclides transport and fate in groundwater systems at the Newmont Akyem Goldmine in the Eastern Region of Ghana. Radiation doses from radionuclides in groundwater have been modeled by considerin...

Comparative Effect of Steam and Gamma Irradiation Sterilization of Sawdust Compost on the Yield, Nutrient and Shelf-Life of Pleurotus Ostreatus (Jacq.Ex.Fr) Kummer Stored In Two Different Pac

ABSTRACT The conventional method of decontamination of the spawn substrate sorghum and compost of ‗wawa‘ (Triplochiton scleroxylon) sawdust by the use of steam sterilization has attendant problems. In this thesis the possibility of using gamma radiation to decontaminate sorghum based spawn substrate and the compost before cultivation of the fruit bodies was determined as well as its effectiveness on selected nutritional, physical and organoleptic properties of the fruit bodies. A survey w...

Dose Reduction In General Radiography While Maintaining Diagnostic Confidence For Selected Examinations In Selected Hospitals In The Ashanti Region, Ghana

ABSTRACT The objective of the study is to explore the potential for dose reduction in the selected Xray facilities for the selected examinations and to ensure that images obtained after the reduction of dose are satisfactory for diagnosis.DAP were measured on a total of 327 patients for chest (PA), skull (PA/LAT), lumbar spine (AP/LAT), abdomen (AP) and pelvis (AP) examinations at COCL, MNDH, TAFH and MMGH. The effective dose incurred by patients per examination was estimated using a PCXMC ve...

Computed Tomography(CT) Radiation Dose in Children: A Survey to Propose Regional Diagnostic Reference Levels in Accra, Ghana

ABSTRACT The aim of this work was to assess the doses delivered to paediatric patients during computed tomography (CT) examinations of the head, chest and abdomen, and establishing regional diagnostic reference levels (RDRLs) for four age groups. The patient data, technique parameters and dose descriptors collected include: age, sex, tube voltage, tube current, rotation time, slice thickness, scan length, volume CT dose index (CTDIvol) and dose length product (DLP). Currently, paediatric CT ...

Indoor Random in Selected Homes in Aburi Municipality : Measurement Uncertainty, Decision Analysis And Remediation Strategy

ABSTRACT The main source of natural internal irradiation of man is radon and its decay products. In this study, the radon concentration levels in selected homes in Aburi of the Akuapim North Municipal Assembly in Eastern Region, Ghana were estimated using time-integrated passive radon detector; LR-115 Type II solid state nuclear track detector (SSNTD) technique. The primary objective of the study was to measure radon levels in 30 selected homes in the Aburi municipality and determine the unc...

Comparative Biology And Reproductive Behaviour Of A Laboratory Adapted Redco Strain Of Anopheles Gambiae Giles (Diptera; Culicidae) And Wild Populations Of The Same Species.

ABSTRACT The sterile insect technique involves mass rearing of male insects for sterility purpose. This heavily relies on male fitness and genetic compatibility of laboratory-adapted male insects and the wild to ensure successful competition with their male counterpart in the wild. Uniform environment in the laboratory as compared to the wild conditions might lead to genetic drift which might lead to reduced sexual competitiveness, fitness, morphological changes or changes in the sexual behav...

A Comparative Study Of Radiofrequency Emissions From Roof Top Mobile Phone Base Station Antennas And Tower Mobile Phone Base Station Antennas Located At Some Selected Cell Sites In Accra, Gha

ABSTRACT RF radiation exposure from antennas mounted on rooftop mobile phone base stations have become a serious issue in recent years due to the rapidly developing technologies in wireless telecommunication. The heightening numbers of base station and their closeness to the general public has led to possible health concerns as a result of exposure to RF radiations. The primary objective of this study was to assess the level of RF radiation emitted from roof top mobile phone base station ant...

Dose Reduction In General Radiography While Maintaining Diagnostic Confidence For Selected Examinations In Selected Hospitals In The Ashanti Region, Ghana

ABSTRACT The objective of the study is to explore the potential for dose reduction in the selected Xray facilities for the selected examinations and to ensure that images obtained after the reduction of dose are satisfactory for diagnosis.DAP were measured on a total of 327 patients for chest (PA), skull (PA/LAT), lumbar spine (AP/LAT), abdomen (AP) and pelvis (AP) examinations at COCL, MNDH, TAFH and MMGH. The effective dose incurred by patients per examination was estimated using a PCXMC ve...

Determination Of Doses And Cancer Risk To Patients Undergoing Digital X-Ray Examinations At The Temale Teaching Hospital

ABSTRACT Entrance surface and effective doses as well as cancer risk to patients for three common radiological examinations were estimated at the radiology department of the Tamale Teaching Hospital. The quality control assessment indicated that the digital xray equipment used, performed self-consistently in line with acceptable performance criteria. The study included eighty-two (82) adult patients undergoing three x-ray imaging modalities; Chest, Abdomen and Pelvis Examinations. From the ...