Sökning: "radiation"
Visar resultat 1 - 5 av 1821 avhandlingar innehållade ordet radiation.
1. The microdosimetric variance-covariance method used for beam quality characterization in radiation protection and radiation therapy
Detta är en avhandling från Stockholm : Medicinsk strålningsfysik (tills m KI)Sammanfattning : Radiation quality is described by the RBE (relative biological effectiveness) that varies with the ionizing ability of the radiation. Microdosimetric quantities describe distributions of energy imparted to small volumes and can be related to RBE. LÄS MER
2. Colorectal cancer and radiation response The role of EGFR, AKT and cancer stem cell markers
Detta är en avhandling från Uppsala : Acta Universitatis UpsaliensisSammanfattning : The primary treatment for colorectal cancer is surgery. Radiotherapy and chemotherapy, sometimes combined, are also frequently used to diminish recurrence risk. In response to radiation exposure, several cellular signaling cascades are activated to repair DNA breaks, prevent apoptosis and to keep the cells proliferating. LÄS MER
3. Optical Studies For Synchrotron Radiation Beamlines
Detta är en avhandling från MAX IV Laboratory, Lund UniversitySammanfattning : Synchrotron radiation sources have greatly contributed to the progress in many fields of science. The development of the storage ring technologies has made possible to obtain very low emittance electron beams, which together with the use of undulators allow guiding a very high photon flux into a very small spot required by the experiments. LÄS MER
4. Modern Computational Physical Chemistry An Introduction to Biomolecular Radiation Damage and Phototoxicity
Detta är en avhandling från Uppsala : Acta Universitatis UpsaliensisSammanfattning : The realm of molecular physical chemistry ranges from the structure of matter and the fundamental atomic and molecular interactions to the macroscopic properties and processes arising from the average microscopic behaviour.Herein, the conventional electrodic problem is recast into the simpler molecular problem of finding the electrochemical, real chemical, and chemical potentials of the species involved in redox half-reactions. LÄS MER
5. Implementation of MRI gel dosimetry in radiation therapy
Detta är en avhandling från Department of Radiation Physics, Lund universitySammanfattning : Gel dosimetry was used together with magnetic resonance imaging (MRI) to measure three-dimensional absorbed dose distributions in radiation therapy. Two different dosimeters were studied: ferrous- and monomer gel, based on the principles of radiation-induced oxidation and polymerisation, respectively. LÄS MER
