Sökning: "per alm"

Visar resultat 11 - 13 av 13 avhandlingar innehållade orden per alm.

  1. 11. Radioluminescence : A simple model for fluorescent layers

    Författare :Jan Lindström; Eva Lund; Michael Sandborg; Gudrun Alm-Carlsson; Linköpings universitet; []
    Nyckelord :Extrinsic efficiency; extinction factor; radioluminescence; modelling; Monte Carlo; optical attenuation; optimisation; particle size; phosphor; scintillator; MEDICINE; MEDICIN;

    Sammanfattning : The aim of this thesis is to present a simple model for the radiation to light conversion processes in fluorescent layers as an aid in future developments and applications. Optimisation between sensitivity and spatial resolution for fluorescent layers in digital radiology is a delicate task where the extrinsic efficiency for various phosphors needs to be established for varying parameters. LÄS MER

  3. 12. Call centre work : characteristics, physical, and psychosocial exposure, and health related outcomes

    Författare :Kerstin Norman; Håkan Alm; Ewa Wigaeus Tornqvist; Allan Toomingas; Gunnevi Sundelin; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Callcenter; fysisk och psykosocial exponering; hälsa; Work sciences and ergonomics; Arbetsvetenskap och ergonomi;

    Sammanfattning : Call centres (CCs) are one of the most rapidly growing forms of workplaces in Sweden. The overall aim of this thesis was to describe work characteristics, physical and psychosocial exposures, and health related outcomes, for CC operators in selected CC in Sweden. LÄS MER

  4. 13. Plant colonization of oak plantations - the interactive effects of local environment and land-use history

    Författare :Karin Valtinat; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nitrogen mineralization; Phosphorus; Plant ecology; Växtekologi; Soil acidity; Seed sowing; Dispersal limitation; Species diversity; Indicator species analysis; Functional groups; Succession; Understory vegetation; Land-use history; Temperate forest;

    Sammanfattning : In Europe, only small fragments of deciduous woodlands remain intact and species dependent on this ecosystem have declined. In southern Sweden, a shifting trend during the 20th century, with more afforestations on former arable land, resulted in new oak stands. These new stand are either on former arable fields or on continuously forested land. LÄS MER