Sökning: "Marcus Söderberg"

Hittade 3 avhandlingar innehållade orden Marcus Söderberg.

  1. 1. Image Quality Optimisation and Dose Management in CT, SPECT/CT, and PET/CT

    Författare :Marcus Söderberg; Malmö Medicinsk strålningsfysik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; CT; SPECT; PET; dosimetry; image quality; optimisation; dose reduction; automatic exposure control; contrast medium; phantom; image reconstruction; human observer;

    Sammanfattning : The significant increase in the use of CT, alone or combined with SPECT or PET, has raised concerns about patient radiation exposure and the consequent increased risk of malignancy later in life. The overall objective of this work was to evaluate and optimise different approaches for minimising patient radiation absorbed dose and maintaining or improving image quality in CT, SPECT/CT, and PET/CT. LÄS MER

  3. 2. New Venture, Survival, Growth : Continuance, Termination and Growth of Business Firms and Business Populations in Sweden During the 20th Century

    Författare :Marcus Box; Karl Gratzer; Johan Söderberg; Johan Wiklund; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; firm growth; firm death; firm survival; firm performance; firm populations; business dynamics; cohort method; longitudinal method; business demography; liability of newness; liability of smallness; entrepreneurship; small and medium enterprises; business history; size distribution; ownership; succession; Economic history; Ekonomisk historia; Business studies;

    Sammanfattning : This dissertation focuses on the formation, growth and discontinuance of business populations and firms in Sweden during the 20th century. It addresses some key issues in the domain of economic and social sciences, and in particular entrepreneurship and small business research: if and when firms grow, stagnate and decline, as well as how long firms survive and when they are likely to disband. LÄS MER

  4. 3. Interactions of Prion Proteins and PrP-derived Peptides in Scrapie infection

    Författare :Kajsa Löfgren Söderberg; Astrid Gräslund; Marcus Fändrich; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Spongiform encephalopathy; Creutzfeldt-Jakob disease; Amyloidosis; Neurodegeneration; Cell penetrating peptide; Protein Transduction Domain; Heparan sulfate; Proteoglycan; Glypican; Src family kinase; Fyn; Biochemistry; Biokemi; Biochemistry; biokemi;

    Sammanfattning : Prion diseases are fatal and incurable spongiform encephalopathies that occur amongst mammals. The central pathological event is the misfolding of the cellular prion protein (PrPC) into an amyloid, neurotoxic isoform called scrapie (PrPSc). PrPSc is the main, or sole, constituent of infectious prions. LÄS MER