Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Low Dose Radiation"”.
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Personalised Risk Assessment of Low-dose Radiation Effects on Spermatogenesis
… arisen about the health effects of long-term, low-dose environmental radiation exposure and contamination. From the point of view of radiation microdosimetry, the energy deposition of radiation from low-dose exposure (such as from environmental radiation) is localised along its track, resulting …
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Evaluating the effectiveness of analogies in an infographic on low-dose radiation
… this research is to address misconceptions about Low Dose Radiation (LDR) by using analogies. The nuclear industry has shown that trust is asymmetrical, meaning it is easily lost and hard to regain. This was evident in Saskatchewan, where a public inquiry in 2008 revealed a significant lack of …
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An evaluation of theories concerning the health effects of low-dose radiation exposures
The danger of high, acute doses of radiation is well documented, but the effects of low-dose radiation below 100 mSv is still heavily debated. Four theories concerning the effects of lowdose radiation are presented here: supra-linearity, linear-no-threshold (LNT), threshold, and hormesis. The …
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Radiation and litigation : analyses of the ALARA principle and low dose radiation in the courts, and the future of radiation in court cases
Currently there are a growing number of radiation workers. In order to ensure the safety of the employees, regulations have been established by the federal government and state governments to limit the dose equivalent to radiation workers. The most well known strategy for reducing radiation doses …
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The role of DNA damage associated microRNAs in enhancing the chemotherapeutic responses in triple negative breast cancer (TNBC)
… to a minimum DNA damage in response to a low dose radiation in TNBC cells, new opportunities in reversing the chemoresistant status of this aggressive type of cancer can be achieved. Hence, the main aim of the presented thesis was to investigate the effects of low-dose radiation on tumour …
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Histopathological and Molecular Changes in Intestinal Tissue Following Proton Exposure in Varying Mouse Models
Most people are aware that radiation can have negative health consequences for human beings exposed to the phenomena. These negative outcomes are dependent upon dose, dose rate, the individual’s genetic makeup and other factors. Many people do not know, however, that radiation is present constantly …
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Diagnostic Procedures Using Radiation and Risk of Thyroid Cancer: Causal Association or Detection Bias? An Examination of Population Cancer Trends and Data from the NYC Fire Department
… whose incidence is increasing. Disaster and radiation treatment studies show high doses of radiation can cause TC. Some diagnostic procedures, whose use is increasing, expose individuals to low-dose radiation but can also incidentally detect subclinical TC. Evidence regarding low-dose …
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Low Dose Dosimetry and Radiation Response in Rodent Models
Exposure to ionizing radiation from diagnostic imaging procedures has dramatically increased in the last three decades. Computed tomography is a powerful and invaluable diagnostic imaging tool, but it is essential that the radiation risks be appropriately quantified so that clinicians are in the …
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Effects of Spaceflight on Phagocytic Function and Immune-Neural Interaction
… central nervous system (CNS) and immune system. Low Earth orbit (LEO) spaceflight studies have shown that microgravity changes virtually all immune parameters that have been evaluated. Similarly, ground based studies have shown that low-dose radiation can also significantly impact immune …
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Radiation-induced bystander fibroblasts both reduce and amplify micronuclei induction through the reciprocal bystander effect and the secondary bystander effect
… directly causing DNA damage, the traversal of radiation through cells also induces the bystander effect, which is the biological response of unirradiated cells that are neighboring or sharing medium with the irradiated cells. Although the mechanisms through which irradiated cells send signals …
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Bioastronautics: Biological Modeling of the Neural Response to Space Radiation and its interaction with Alzheimer's Disease Risk Genes
The exotic radiation permeating interplanetary space remains the least understood and perhaps most challenging intrinsic barrier to a sustained human presence beyond Earth. As the coming decade brings the promise of continuous lunar habitation and even the first voyage to another planet, …
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Studying the Effect of Low Doses of Ionization Radiation on Senescence in Human Lung Fibroblasts.
The exposure to high doses of ionizing radiation (>5Gy) is unequivocally associated with increased cancer risk. However, there is substantial experimental evidence showing that in response to low doses of ionizing radiation (LDR: <100mGy), cells and organisms are benefitted with delayed ageing, …
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Standards for epiphyseal union in South African children between the ages of 6 to 24 years using low dose X-ray (lodox)
… The LODOX Statscan system, which emits low dose radiation and full body radiographs in thirteen seconds, was used to assess radiographs of1891 individuals between the ages of 6 - 24 years. Union was classified in four stages ranging from one (non-union) to stage four (complete union). …