Sökning: "Bengt Gustafsson"

Visar resultat 1 - 5 av 21 avhandlingar innehållade orden Bengt Gustafsson.

  1. 1. Chemical Abundance Analysis of Population II Stars : The Summary Includes a Background in General Astronomy

    Författare :Karin Jonsell; Bengt Gustafsson; Bengt Edvardsson; Paul Barklem; Christopher Sneden; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Astronomy; Astronomy; Galactic evolution; Halo; Milky Way; Oxygen; r-element; s-element; Stellar abundances; Astronomi; Astronomy and astrophysics; Astronomi och astrofysik;

    Sammanfattning : We are made of stardust in the sense that most atomic nuclei around us have been formed by stars. Stars synthesise new elements and expel them to the interstellar medium, from which later new generations of stars are born. We can map this chemical evolution by analysing the atmospheric contents of old Galactic halo stars. LÄS MER

  3. 2. Many-body Problems in the Theory of Stellar Collapse and Neutron Stars

    Författare :Emma Olsson; Bengt Gustafsson; Christopher Pethick; Bengt Friman; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Astronomy; neutron stars; core-collapse supernovae; response functions; Fermi liquids; nuclear matter; neutrino interactions; Astronomi; Astronomy and astrophysics; Astronomi och astrofysik;

    Sammanfattning : When modelling the collapse of massive stars leading to supernova explosions and the cooling of neutron stars, understanding the microphysical processes, such as the interaction of neutrinos within a dense medium are of vital importance. The interaction of neutrinos with nucleons (neutrons and protons) is altered by the presence of the medium, compared to the same process with free nucleons. LÄS MER

  4. 3. On the construction and use of model stellar atmospheres for stars of spectral types later than F O

    Författare :Bengt Gustafsson; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  5. 4. Symbolisk organisering : En studie av organisatorisk förändring och meningsproduktion i fyra industriföretag

    Författare :Bengt-Åke Gustafsson; Sociologi; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Sociology of labour; change; Organizational design; symbolism; rhetoric; management of meaning; organizational culture; information; flow-oriented work-organizations.; processes; sociology of enterprise; Arbetslivssociologi; företagssociologi;

    Sammanfattning : The focus of this dissertation is on organizational change in four industrial corporations. A special emphasisis placed upon the symbolic and rhetorical aspects when changing organizations. Main concepts in the study are symbolic management and management of meaning. Two main areas are discussed in the dissertation. LÄS MER

  7. 5. Numerical simulation of kinetic effects in ionospheric plasma

    Författare :Bengt Eliasson; Bertil Gustafsson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Numerical Analysis; Numerisk analys;

    Sammanfattning : In this thesis, we study numerically the one-dimensional Vlasov equation for a plasma consisting of electrons and infinitely heavy ions. This partial differential equation describes the evolution of the distribution function of particles in the two-dimensional phase space (x,v). LÄS MER