Sökning: "Molecular clouds"

Visar resultat 11 - 15 av 51 avhandlingar innehållade orden Molecular clouds.

  1. 11. Thin water and ice films on minerals : a molecular level study

    Författare :Merve Yeşilbaş; Jean-François Boily; Johannes Messinger; Grégory Lefèvre; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; water; ice; cryosalt; minerals; rocks; atmosphere; Dynamic Vapour Sorption; FTIR; cryo-FESEM; fysikalisk kemi; Physical Chemistry;

    Sammanfattning : Minerals in Earth’s crust and suspended in the atmosphere form water or ice films as thin as a few nanometers to as thick as a few micrometers, and beyond. Mineral-bound water and ice films in terrestrial systems (e.g. LÄS MER

  3. 12. Beyond Köhler theory : Molecular dynamics simulations as a tool for atmospheric science

    Författare :Thomas Hede; Caroline Leck; Veli-Matti Kerminen; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Köhler theory; molecular dynamics; surface tension; aggregate; climate; atmosfärvetenskap och oceanografi; Atmospheric Sciences and Oceanography;

    Sammanfattning : In this thesis, the results from molecular dynamics (MD) simulations of nanoaerosol clusters are discussed. The connecting link of these studies is the Köhler theory, which is the theory of condensational growth and activation of cloud droplets to form clouds. LÄS MER

  4. 13. Bird's-eye view of molecular clouds in the Milky Way

    Författare :Andri Spilker; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Interstellar medium; column density statistics; star formation;

    Sammanfattning : A crucial aspect in interpreting the scaling relations relevant for star formation - the Kennicutt-Schmidt relation and the Larson relations - is how those relations depend on size-scale. This is especially so when comparing relations derived from unresolved, extragalactic data to those derived from resolved, Galactic data. LÄS MER

  5. 14. Observations and modelling of interstellar chemistry : preparatory studies for the Odin satellite

    Författare :Anders Nilsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; interstellar medium; astrochemistry; chemical simulations; molecular clouds;

    Sammanfattning : .... LÄS MER

  7. 15. Examination of Dissociative Recombination Processes of Importance for Astrochemically Evolving Interstellar Clouds

    Författare :Matthias Hamberg; Wolf Geppert; Peder Royen; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Dissociative Recombination Astro Chemistry; Chemical physics; Kemisk fysik; kemisk fysik; Chemical Physics;

    Sammanfattning : Each single moment a myriad of processes is taking place throughout the universe. A great deal of them has been found to be dissociative recombination (DR) reactions. In this thesis the major work described are related to experimental determination of reaction rates and how the reaction products splits up into their final fragments. LÄS MER