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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
(Massachusetts Institute of Technology, 2006)
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 ...
Dosimetry of ¹²⁵Iodine protons for in vivo mouse irradiation study
(Massachusetts Institute of Technology, 2006)
The biological effects of acute, high doses of radiation are well understood. However, the effects of chronic, low doses are not as clear. Mice irradiation experiments to study the correlation of biological effects with ...
Analysis of in-core experiment activities for the MIT Research Reactor using the ORIGEN computer code
(Massachusetts Institute of Technology, 2006)
The objective of this study is to devise a method for utilizing the ORIGEN-S computer code to calculate the activation products generated in in-core experimental assemblies at the MIT Research Reactor (MITR-II). ORIGEN-S ...
Gyrokinetic simulations of the nonlinear upshift of the critical density gradient for TEM turbulence in tokamak fusion plasmas
(Massachusetts Institute of Technology, 2006)
The effect of collisionality on a new nonlinear upshift of the critical density gradient for onset of Trapped Electron Mode (TEM) turbulence is investigated in detail. Both linear and nonlinear, high resolution simulations ...
Development and application of a steady state code for supercritical carbon dioxide cycles
(Massachusetts Institute of Technology, 2006)
The supercritical CO2 power conversion system is of interest for advanced nuclear reactor applications because the same efficiencies are obtained as for the most developed of the closed gas-turbine cycles (helium-Brayton), ...
An assessment of carbon sources for the production of synthetic fuels from nuclear hydrogen
(Massachusetts Institute of Technology, 2007)
In the transportation sector, the current dependence on petroleum to satisfy large transportation fuel demand in the US is unsustainable. Oil resources are finite, and causing heavy US reliance on oil imports. Therefore, ...
Upgrade of the neon soft X-ray spectrometer for Alcator C-Mod
(Massachusetts Institute of Technology, 2007)
In order to study plasma rotation, temperature, and impurity density, a Neon Soft X-ray Spectrometer (NeSoXs) was installed on the Alcator C-Mod tokamak. This spectrometer used a spherically bent mica crystal as the ...
Using simulation to estimate probability density functions of bound water molecules with DSI
(Massachusetts Institute of Technology, 2007)
In order to explore the physical basis by which high resolution diffusion imaging derives information about fiber alignment and diameter, we simulated a model diffusion experiment employing a random walk paradigm. A ...
Effects of ionizing radiation on normal and tumor-associated lymphatic vessels
(Massachusetts Institute of Technology, 2007)
Lymphatic vessels play a crucial role in both the pathophysiology of tumors and in the spread cancer cells to lymph nodes. The effects of radiation on these vessels, however, are largely unknown. Here, we seek to describe ...
Human error contribution to nuclear materials-handling events
(Massachusetts Institute of Technology, 2007)
This thesis analyzes a sample of 15 fuel-handling events from the past ten years at commercial nuclear reactors with significant human error contributions in order to detail the contribution of human error to fuel-handling ...