Sökning: "ulf danielsson"

Visar resultat 1 - 5 av 16 avhandlingar innehållade orden ulf danielsson.

  1. 1. Spectroscopic study of titanium monohydride and storage ring experiments

    Författare :Mathias Danielsson; Ulf Sassenberg; Mats Larsson; Peder Royen; Olli Launila; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TiH; TiD; transition metal hydride; dissociative recombination; Chemical physics; Kemisk fysik; kemisk fysik; Chemical Physics;

    Sammanfattning : This thesis describes two projects, spectroscopy of the astrophysically relevant molecule TiH and its isotopologue TiD, and the dissociative recombination (DR) reaction of astrophysically and atmospherically relevant molecules. Emphasis in the thesis is on the first project. LÄS MER

  3. 2. Violence exposure among Swedish youth

    Författare :Helena Blom; Ingela Danielsson; Ulf Högberg; Lena Marions; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; violence; adolescent; self-injurious behaviour; suicidal ideation; mental health; reproductive health; youth; obstetrik och gynekologi; Obstetrics and Gynaecology;

    Sammanfattning : BackgroundViolence is a global public health problem and violence among youth is a matter of high priority. Adolescence and young adulthood are important periods for the foundation of future health. LÄS MER

  4. 3. Singular Fluxes in Ten and Eleven Dimensions : Sources, Singularities, Fluxes and Spam

    Författare :Johan Blåbäck; Ulf Danielsson; Niels Obers; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Theoretical Physics; Teoretisk fysik;

    Sammanfattning : The energy content of our present universe is dominated by the dark-energy, or vacuum energy, which provides accelerated cosmic expansion. Dark energy has a possible effective explanation through a positive cosmological constant. LÄS MER

  5. 4. Explorations of University Physics in Abstract Contexts : From de Sitter Space to Learning Space

    Författare :Daniel Domert; Cedric Linder; Ulf Danielsson; Duncan Fraser; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; phenomenography; cosmology; de Sitter space; quantum mechanics; conceptual understanding; epistemology; physics equations; Fysik; Physics; Fysik; Physics with specialization in Physics Education; Fysik med inriktning mot fysikens didaktik;

    Sammanfattning : This is a thesis which contributes to research in two different fields: theoretical physics and physics education research. The common link between these two research areas is that both involve explorations of abstract physics and mathematical representations, but from different perspectives. LÄS MER

  7. 5. New horizons in string theory : bubble babble in search of darkness

    Författare :Suvendu Giri; Ulf Danielsson; Bert Vercnocke; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; String theory; black holes; dark energy; de Sitter; cosmological constant; M-theory; braneworld; anti de Sitter; Theoretical Physics; Teoretisk fysik;

    Sammanfattning : It was discovered nearly two decades ago that we live in an accelerating universe that is dominated by dark energy. Understanding the origin of such an energy has turned out to be a very difficult open question in physics, and calls on the need for a fundamental theory like string theory. LÄS MER