Sökning: "radiation"

Visar resultat 1 - 5 av 1696 avhandlingar innehållade ordet radiation.

  1. 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)

    Författare :Jan Erik Lillhök; Stockholms universitet.; [2007]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; ionizing radiation; radiation quality; radiation protection; radiation therapy; microdosimetry; nanodosimetry; variance-covariance method; MEDICINE Physiology and pharmacology Radiological research Radiological physics; MEDICIN Fysiologi och farmakologi Radiologisk forskning Radiofysik; medicinsk strålningsfysik; Medical Radiation Physics;

    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. 2. Colorectal cancer and radiation response The role of EGFR, AKT and cancer stem cell markers

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Sara Häggblad Sahlberg; Uppsala universitet.; [2014]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; colorectal cancer; radiation; AKT; EGFR; cancer stem cells; CD133; CD44; Biomedical Radiation Science; Biomedicinsk strålningsvetenskap; Biology with specialization in Molecular Cell Biology; Biologi med inriktning mot molekylär cellbiologi;

    Sammanfattning : 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. 3. Optical Studies For Synchrotron Radiation Beamlines

    Detta är en avhandling från MAX IV Laboratory, Lund University

    Författare :Walan Grizolli; Lunds universitet.; Lund University.; Lunds universitet.; Lund University.; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Synchrotron Radiation; Optics; X-ray Optics; Beamline; Polarimetry; Coherence; Storage Rings; Diffraction Limited Storage Rings;

    Sammanfattning : Popular Abstract in English Among the large variety of experiments performed in science, a common one is to pass a light beam through a sample, the object to be studied, and to study the outcomes of the light-sample interaction. Many light sources have been used for this purpose, like light bulbs and lasers. LÄS MER

  4. 4. Modern Computational Physical Chemistry An Introduction to Biomolecular Radiation Damage and Phototoxicity

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Jorge Llano; Uppsala universitet.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; statistical mechanics; biophysical chemistry; interface; surface thermodynamics; bioelectrochemistry; ionizing radiation; radiation therapy; condensed matter; computational chemistry; nucleic acids; radiation damage; electrode potential; electronic transport; photochemistry; strand break; photodynamic action; cytostatic; solvation; solvated electron; absolute potential; chemical potential; Biologi; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi;

    Sammanfattning : 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. 5. Implementation of MRI gel dosimetry in radiation therapy

    Detta är en avhandling från Department of Radiation Physics, Lund university

    Författare :Sven Bäck; Lunds universitet.; Lund University.; [1998]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; oncology; Cytology; uncertainty; detector; dosimeter; ferrous ions; gel dosimetry; magnetic resonance imaging; monomers; polymerisation; proton; treatment planning verification; radiation therapy; cancerology; Cytologi; onkologi; cancer;

    Sammanfattning : Popular Abstract in Swedish Gel-dosmätningar för kontroll av strålbehandling av cancertumörer När en patient strålbehandlas avser man att bestråla sjuka områden i kroppen. Det är dock omöjligt att göra detta utan att därmed även till viss del stråla på omkringliggande organ och komplikationer kan då uppstå. LÄS MER