Thesis (Ph.D.). / Title from title page of PDF (viewed 2008/01/30). Written for the Dept. of Epidemiology and Biostatistics. Includes bibliographical references.

Thesis (doctoral)--Universität Köln.

Thesis (doctoral)--Universität zu Köln, 1972. / Includes bibliographical references (p. [viii]-xx).

Thesis (Ph.D.). / Title from title page of PDF (viewed 2008/01/30). Written for the Dept. of Epidemiology and Biostatistics. Includes bibliographical references.

Inaug. _ Diss.: Rechts- und staatswissenschaftliche Fakultät: Zürich: 1975. Bibliogr. p. 9-14.

Inaug.-Diss.: Rechts- und staatswissenschaftliche Fakultät: Zürich: 1976. _ Bibliogr. p. 149-155.

Thesis (Ph. D.)--University of Wisconsin, 1920. / Typewritten t.p. supplied. "An excerpt from the Report of the Health insurance commission of the state of Illinois, 1919."

Thesis (M.S.)--West Virginia University, 2000. / Title from document title page. Document formatted into pages; contains v, 58 p. Vita. Includes abstract. Includes bibliographical references (p. 44-45).

En cas d’accident grave sur un réacteur à eau sous pression, l’évaluation de la quantité d’iode susceptible d’être rejetée dans l’environnement revêt une grande importance du fait de la radiotoxicité et du caractère volatil de cet élément. A ce jour, les connaissances acquises et les modèles utilisés ne permettent pas de rendre compte complètement du comportement de l’iode observé lors d’essais à grande échelle (programme PHEBUS-FP). Ces essais ont mis en évidence le rôle de la chimie hydrothermale de produits de fission (PF) tels que Cs et Mo sur la formation d’iode gazeux dans le circuit primaire. Des expériences de laboratoire dans un montage spécialement conçu reproduisent la chimie de mélanges CsI/MoO3 sous vapeur d’eau entre 1600 et 150°C. Les analyses globales (ICP-MS, DRX) et locales (MEBE-EDX, microspectrométrie Raman) ont permis d’identifier CsI, MoO3,xH2O et Cs2MonO3n+1 (n=1,2,3,5,7) dans les particules d’aérosols submicroniques collectés à 150°C. La formation des molybdates de césium Cs2MonO3n+1 conduit à la présence d’iode en phase gazeuse à 150°C. La modélisation de la chimie et du transport des espèces gazeuses et particulaires du système {I, Cs, Mo, O, H}. dans la ligne expérimentale a été réalisée à l’aide du code de calcul SOPHAEROS. La comparaison des résultats expérimentaux et des résultats des simulations met en avant des écarts, en particulier sur la prévision de la quantité d’iode gazeux présente à 150°C. / Iodine and cesium radio nuclides constitute important fission products (FP) of 235U. If the volatile forms (gas, aerosol) of FP would be released into the environment during a hypothetical severe accident of pressurized water reactor (PWR), a potential health hazard would be the ensue. Understanding their behaviors is an important prerequisite for planning appropriate mitigation measures. Severe reactor accident simulations are conducted in several tests of the international PHEBUS-FP program. The suspected connection existing between FP such as Cs, Mo and I, hydrothermal chemistry and its role on the iodine speciation in the primary circuit of reactor coolant system are highlighted. An experimental setup was developed to study the chemical behavior of CsI/MoO3 mixtures at 1600°C under steam and then during the steam cooling to 150 °C. These hydrothermal conditions are representative of the primary circuit of PWR. The analyses using ICP-MS, powder XRD, MEBE-EDX and Raman microspectrometry identify submicrometric aerosol particles as CsI, MoO3.xH2O and Cs2MonO3n+1 (n=1, 2, 3, 5, 7) according to the starting CsI/MoO3 ratio. The formation of Cs2MonO3n+1 induces the generation of gaseous iodine. This later result is in agreement with PHEBUS-FP experiments. The simulations of vapor phase chemistry and aerosol phenomena of the {I, Cs, Mo, O, H} system in the experimental setup were carried out using the SOPHAEROS code based on the thermodynamic chemical equilibriums. Some discrepancies were observed between experimental and simulated results, particularly for Mo rich particles and the volatile iodine species release.

Although airbags have reduced the incidence of fatal and severe injuries in automobile collisions, they have been shown to increase the risk of less severe injuries. The purpose of this research was to investigate particular occupants and injury types in automobile crashes in order to identify national trends in injury incidence, type, and severity. A statistical analysis was performed in order to determine the effects of airbag deployment on incidence and severity of various injury and occupant types. In addition, a computational modeling study aimed to recreate actual automobile crashes that occurred in order to identify injury mechanisms and occupant kinematics during the crash. The specific studies performed were designed to investigate the effects of frontal airbags on: skin injuries, burn injuries, eye injuries, orbital fractures, severe upper extremity injuries, and pregnant occupant injuries. The statistical analyses revealed several significant findings in injury trends related to occupant exposure to airbag deployment. In particular, occupants in frontal crashes were significantly at a higher risk to sustain a skin injury (p=0.00), a burn injury (p=0.02), a corneal abrasion (p=0.03), and a severe upper extremity injury (p=0.01) when exposed to an airbag deployment, than when not exposed to an airbag deployment. In addition, female occupants were at a statistically higher risk of sustaining an airbag induced skin injury than males (p=0.00). Finally, within a 95% confidence interval, older occupants were at a higher risk for sustaining both airbag induced burn injuries, and severe upper extremity injuries. While occupants in crashes with lower impact velocities were at a higher risk for airbag induced burn injuries, occupants in crashes with higher impact velocities were more likely to sustain a severe upper extremity injury. The airbag increased the incidence of eye injuries for occupants in frontal crashes, however, it also decreased the severity of the associated eye injuries. In particular, occupants who sustained an orbital fracture when exposed to airbag deployment sustained mostly closed, less severe orbital fractures, while occupants not exposed to airbag deployment much more often sustained more severe, open, displaced, or comminuted orbital fractures. While the airbag was shown to increase the risk of some injuries to particular occupants involved in specific crash types, the airbag appears to have provided a beneficial protective effect as it also reduced the severity of all injuries observed. / Master of Science