Sökning: "numerical bond model"

Visar resultat 21 - 25 av 26 avhandlingar innehållade orden numerical bond model.

  1. 21. Fragmentation of Amino Acids and Microsolvated Peptides and Nucleotides using Electrospray Ionization Tandem Mass Spectrometry

    Författare :Henrik Johansson; Stockholms universitet.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES Physics Atomic and molecular physics; NATURVETENSKAP Fysik Atom- och molekylfysik; fysik; Physics;

    Sammanfattning : This thesis presents three different series of high energy (keV) collision experiments as well as a brief scientific introduction to the field. In the first series, protonated glycine and leucine were collided with carbon dioxide and a beam attenuation method was applied to determine their total fragmentation cross sections. LÄS MER

  2. 22. Photoelectron spectroscopy in the vicinity of a core-ionization threshold

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Stefan Sundin; Uppsala universitet.; [1998]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik; fysik; Physics;

    Sammanfattning : The fundamental interaction between photons and free molecules/atoms has been studied by means of soft x-ray photoelectron spectroscopy. Special interest has been paid to the non-resonant and resonant processes in the vicinity of a core-ionization threshold. LÄS MER

  3. 23. Behaviour of blast-induced damaged zone around underground excavations in hard rock mass

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :David Saiang; Luleå tekniska universitet.; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Civil engineering and architecture - Geoengineering and mining engineering; Samhällsbyggnadsteknik och arkitektur - Geoteknik och gruvteknik; Gruv- och Berganläggningsteknik; Mining and Rock Engineering;

    Sammanfattning : The presence of blast-induced damaged zone around an excavation boundary has been an important concern in rock construction. It is generally believed that the presence of this zone can pose problems related to stability and flow and consequently impair the performance and functionality of the excavation. LÄS MER

  4. 24. Macromolecular design UV-curable thiol-ene networks based on renewable resources

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Mauro Claudino; KTH.; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Plant oils and terpenes are ubiquitous natural renewable compounds. The double bonds contained in most of these monomers can be utilized via the photo-induced free-radical thiol–ene reaction to create novel bio-derived polymer thermosets representing a valuable ‘green’ alternative to petrochemical olefins and resulting synthetic plastic materials. LÄS MER

  5. 25. Thiol−ene Coupling of Renewable Monomers at the forefront of bio-based polymeric materials

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Mauro Claudino; KTH.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Thiol-ene chemistry; monounsaturated fatty-acids; renewable resources; cis trans-isomerization; photopolymerization; networks; polyesters; thermal viscoelastic properties; thin-films; unsaturated macro lactones; coatings;

    Sammanfattning : Plant derived oils bear intrinsic double-bond functionality that can be utilized directly for the thiol–ene reaction. Although terminal unsaturations are far more reactive than internal ones, studies on the reversible addition of thiyl radicals to 1,2-disubstituted alkenes show that this is an important reaction. LÄS MER