Sökning: "numerical bond model"

Visar resultat 16 - 20 av 26 avhandlingar innehållade orden numerical bond model.

  1. 16. Proton-Coupled Electron Transfer from Hydrogen-Bonded Phenols

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Tania Irebo; Uppsala universitet.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Proton-coupled electron transfer; phenol oxidation; hydrogen bonds; artificial photosynthesis; promoting vibrations; proton transfer; laser flash-quench; transient absorption.; NATURAL SCIENCES Chemistry Physical chemistry; NATURVETENSKAP Kemi Fysikalisk kemi; Physical Chemistry; Fysikalisk kemi;

    Sammanfattning : Proton-coupled electron transfer (PCET) is one of the elementary reactions occurring in many chemical and biological systems, such as photosystem II where the oxidation of tyrosine (TyrZ) is coupled to deprotonation of the phenolic proton. This reaction is here modelled by the oxidation of a phenol covalently linked to a Ru(bpy)32+-moitey, which is photo-oxidized by a laser flash-quench method. LÄS MER

  2. 17. Mineral dissolution from molecular to field scale

    Detta är en avhandling från Stockholm : Department of Geological Sciences, Stockholm University

    Författare :Heléne Strandh; Stockholms universitet.; [1999]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Mineralogy; Petrology and Geochemistry; mineralogi; petrologi och geokemi;

    Sammanfattning : Mineral reactivity contributes to the global biogeochemical cycling of elements. CO2is consumed during the chemical weathering of many silicates and during formation of carbonates in the oceans. LÄS MER

  3. 18. Micromechanics of Fiber Networks

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

    Författare :Svetlana Borodulina; KTH.; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Network simulation; Mechanical properties; Fibers; Fiber-to-fiber bonds; Free fiber length; Number of contacts; Contact density; Paper properties; X-ray microtomography; Solid Mechanics; Hållfasthetslära;

    Sammanfattning : The current trends in papermaking involve, but are not limited to, maintaining the dry strength of paper material at a reduced cost. Since any small changes in the process affect several factors at once, it is difficult to relate the exact impact of these changes promptly. LÄS MER

  4. 19. Theoretical prediction of ionisation properties of proteins

    Detta är en avhandling från Stockholm : Karolinska Institutet, Biosciences and Nutrition

    Författare :Assen Koumanov; Karolinska Institutet.; Karolinska Institutet.; [2003]

    Sammanfattning : This work emphasises on elaboration of improved theoretical and computational methods for determination of protonation/deprotonation equilibria in proteins. It also aims to contribute for a better understanding on atomic level of ionisation properties of proteins and their role in structure-functional relationship. LÄS MER

  5. 20. Plate bonding strengthening of existing concrete structures with epoxy bonded plates of steel or fibre reinforced plastics

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Björn Täljsten; Luleå tekniska universitet.; [1994]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structural Engineering; Konstruktionsteknik;

    Sammanfattning : This thesis deals with several aspects of the plate bonding problem, i.e. when steel or fibre reinforced plastics (FRP) plates are bonded to a concrete structure with the use of an epoxy adhesive. Both theoretical work and laboratory tests are presented as well as a full scale test on a strengthened concrete bridge. LÄS MER