Sökning: "Gamma irradiation"
Visar resultat 16 - 20 av 37 avhandlingar innehållade orden Gamma irradiation.
16. Factors modifying cellular response to ionizing radiation
Sammanfattning : Many physical factors influence the biological effect of exposure to ionizing radiation, including radiation quality, dose rate and temperature. This thesis focuses on how these factors influence the outcome of exposure and the mechanisms behind the cellular response. LÄS MER
17. The GLAST Satellite Calorimeter
Sammanfattning : The Gamma Ray Large Area Space Telescope (GLAST) is a multi-national satellite mission with aim to study the high-energy gamma ray sky. The main instrument is the Large Area Telescope (LAT) that consists of 16 towers, each housing a silicon strip precision tracker and a CsI(Tl) calorimeter. LÄS MER
18. Short and long-term effects of exposure to low dose and low dose rate of gamma radiation : using in vitro and in vivo models
Sammanfattning : Assessment of human health risks from exposure to ionizing radiation (IR) is mainly based on the extrapolation of results from epidemiological studies on populations exposed to relatively high doses and often at high dose rates (HDR). Risk estimates after exposure to low doses and in particular at low dose rates (LDR) remain controversial due to a lack of epidemiological evidence. LÄS MER
19. Induction and repair of DNA double-strand breaks in human cells exposed to different radiation qualities
Sammanfattning : Radiation therapy is used in attempting to kill tumor cells by inducing DNA double- strand breaks (DSB), the most critical DNA lesions. Recent and planned radiation therapy strategies use high-linear energy transfer (LET) radiation to effectively treat malignant tumors. LÄS MER
20. New approaches to preparation and storage of platelets
Sammanfattning : During the last century, transfusion of blood components has become a prerequisite for treatment in many clinical settings. The availability of plastic bags and methods for centrifugation and separation of blood cells, has enabled processing of whole blood into blood cell components, and made it possible to optimize transfusion therapy, as well as storage conditions. LÄS MER