Sökning: "99 Tc"

Hittade 4 avhandlingar innehållade orden 99 Tc.

  1. 1. Analysis of β--emitting radionuclides: 90Sr and 99Tc : applied in spent nuclear fuel research Henrik Ramebäck

    Författare :Henrik Ramebäck; Chalmers tekniska högskola; []
    Nyckelord :diffusion; 99< sub> Tc; apparent diffusivity; ICP-MS; spent nuclear fuel; analysis; 90< sub>Sr; released fraction;

    Sammanfattning : .... LÄS MER

  3. 2. Light treatment in seasonal and nonseasonal depression : diagnostic, clinical and neurendocrine studies

    Författare :Björn-Erik Thalén; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Depression; seasonal; nonseasonal; light treatment; clinical ratings; melatonin; cortisol; ACTH; CRH; dexamethasone suppression testBj rn-Erik Thalen; 1996Printed in Sweden by Repro Print; Stockholm.;

    Sammanfattning : There is a need for evaluation of new treatment modalities in depression. The aims of this thesis were to investigate the effect of 2 hours of daily light treatment for 10 days in patients with a major depression with seasonal or nonseasonal pattern and to study subgroups of depressed patients with respect to clinical, demographic, and neuroendocrine factors, the effect of exposure to bright light, dexamethasone suppression test, CRH stimulation and the hormonal effect of light exposure on healthy controls. LÄS MER

  4. 3. Early events in T cell development

    Författare :Karin Leandersson; Malmö Cancerimmunologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Immunology; pTalpha; gammadelta T cell; alphabeta T cell; development; thymus; thymocyte; serology; transplantation; Immunologi; serologi;

    Sammanfattning : T cells constitute a heterogenous population of lymphocytes. Their unifying property is that they express surface bound antigen-receptors, called T cell receptors (TCRs). The TCR is a heterodimer composed of either TCRalpha and beta chain proteins (alphabeta TCR) or gamma and delta chain proteins (gammadelta TCR). LÄS MER

  5. 4. The Use of Aliquat-336 in a Partitioning and Transmutation Process and a Kinetic Study of the Oxidation of U(IV) to U(VI)

    Författare :Anders Landgren; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; partitioning; quaternary ammonium salts; transmutation; hydrolysis; Aliquat-336; liquid-liquid extraction; kinetics; oxidation; uranium IV ;

    Sammanfattning : Spent nuclear fuel contains several long-lived radionuclides that must be stored in a safe manner for a long time. Transmutation of these radionuclides into short-lived or stable nuclides reduces the necessary storage time by several orders of magnitude. The nuclides most suitable for transmutation are those of the actinides. LÄS MER