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 12 of 12 for “"radiation dosage"”.
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The measurement of beta radiation dosage with photographic emulsions
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1951.
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Utilizing Permanent On-Board Water Storage for Efficient Deep Space Radiation Shielding
… is the protection of astronauts from the radiation environment seen in deep space. The most effective way to defend against radiation is increasing the thickness of the shield, however this is limited by strict mass requirements. In order to increase the thickness of the shield, it is …
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An Analysis of the Influence of Age and Ionizing Radiation on Cognitive Performance
… test results among persons exposed to ionizing radiation. The data for this investigation came from the fourth year of a 1995-98 longitudinal study of subjects exposed to radiation from the 1986 Chernobyl, Ukraine, nuclear power plant accident. Accuracy and efficiency scores from four cognitive …
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Surface plasmon enhanced fluorescence for biological imaging : from visible to short-wave infrared
… offers high spatio-temporal resolution, low radiation dosage exposure, and low cost among all the available imaging modalities, for example, magnetic resonance imaging, computerized tomography and positron emission tomography. Imaging probes of high emissivity and photostability are the key …
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Cone-Beam Computed Tomography and Orthodontics: Awareness Assessment
… of CBCT use, including risk assessment, radiation dose estimation, diagnostic utility, and issues of informed consent. It is incumbent on the profession to understand how practitioners view this technology as it gains popularity and ease of use. Materials and Methods: A 21-question survey …
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Characterization of Mechanical Properties of Gamma Irradiated Additively Manufactured Articles for In-Space Manufacturing
… chapter is focused on the effects of gamma irradiation on mechanical properties of hybrid materials as an in-space 3D printing feedstock to investigate the forthcoming possibilities of this technology for future space exploration missions. 3D printed testing samples were irradiated at …
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Scalable Bayesian Inference in the Era of Deep Learning: From Gaussian Processes to Deep Neural Networks
… tomographic reconstructions while applying less radiation dosage.
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Structure-property relationships of electron beam irradiated monomeric and polymeric systems
… behavior. In this thesis, the basic theories on radiation chemistry were first reviewed. Next, five different studies on the application of EB radiation were discussed. In the first study on the surface modification of the methacrylic acid derivative of the glycidyl ether of bis-phenol A(bis-GMA) …
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Structure-property relationships of electron beam cured systems containing bis-GMA
… of bisphenol-A crosslinked by electron beam irradiation. This material, commonly called bis-GMA, is a viscous liquid at room temperature which crosslinks to form a glassy network when a 3 to 5 mil coating is irradiated with sufficient energy. The major parameters which were systematically …
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C-ARM TOMOGRAPHIC IMAGING TECHNIQUE FOR DETECTION OF KIDNEY STONES
… of the kidney is relatively higher exposure to radiation which is more than regular x-rays. C-arm technique is a new x-ray imaging modality that uses 2D array detector and cone shaped x-ray beam to create 3D information about the scanned object. Both x-ray source and 2D array detector cells …
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Degradation studies on recycled Polyethylene terephthalate
… of the most weathering damaging factors; UV radiation, oxygen, temperature and water. Whatever the application, there is a concern regarding the durability of the products because if its useful lifetime can be estimated in short time, their maintenance and replacement can be planned in …