Search for dissertations about: "local reactions"

Showing result 1 - 5 of 190 swedish dissertations containing the words local reactions.

  2. 1. Local structure and composition : in additively manufactured bulk metallic glasses and composites

    Author : Inga Katharina Goetz; Jochen M. Schneider; Björgvin Hjörvarsson; Ulf Jansson; Maria Teresa Pérez Prado; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; additive manufacturing; bulk metallic glasses; nanoscale clustering; convective flow; laser nitriding; laser powder bed fusion; metallic glass - ceramic composites; oxygen impurities; mechanical properties; magnetic properties; viscosity; Fysik; Physics;

    Abstract : Additive manufacturing enables the production of complex multi-material geometries and bulk metallic glass parts beyond their critical casting thickness. The local modification of structure, composition, and properties is explored in this thesis with the aim to design novel composite materials and functional gradients. READ MORE

  4. 2. Quantum Chemical Studies of Aromatic Substitution Reactions

    Author : Magnus Liljenberg; Tore Brinck; Leif Eriksson; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Teoretisk kemi och biologi; Theoretical Chemistry and Biology;

    Abstract : In this thesis, density functional theory (DFT) is used to investigate the mechanisms and reactivities of electrophilic and nucleophilic aromatic substitution reactions (SEAr and SNAr respectively). For SEAr, the σ-complex intermediate is preceded by one (halogenation) or two (nitration) π-complex intermediates. READ MORE

  5. 3. Local and global contaminants in Swedish waters : studies on PCBs, DDTs, 4,5,6-trichloroguaiacol and their transformation products in fish and sediments

    Author : Maria Söderström; Åke Bergman; Bert van Bavel; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; PCB; DDT; HCB; trichloroguaiacol; transformation products; dimerisation; bromination; environmental pollutants; eutrophication; lakes; fresh water; baltic sea; monitoring; sediments; fish; phytoplankton; PCB; DDT; HCB; triklorguajakol; omvandlingsprodukter; dimerisering; bromering; miljöföroreningar; eutrofiering; sjöar; sötvatten; östersjön; miljöövervakning; sediment; fisk; fytoplankton; miljökemi; Environmental Chemistry;

    Abstract : This thesis is focused on studies on the environmental fate and methodological improvements for determination of the global contaminants, PCBs and DDTs, and locally discharged phenolics, e.g. 4,5,6-trichloroguaiacol (4,5,6-TCG), and their transformation products. READ MORE

  6. 4. Inflammatory reactions in the gingiva and the periimplant mucosa

    Author : Nicola Zitzmann; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : The purpose of the present series of investigations was to study the tissue response to plaque formation at teeth and implants as well as local mechanisms involved in the regulation of the inflammatory process. The reaction of the periimplant mucosa (PiM) to long-standing plaque accumulation on implant abutments with different surface roughness was analysed in the dog model (Study I). READ MORE

  7. 5. Parental reactions in childhood cancer : distress, risk and resilience

    Author : Eygló Guðmundsdóttir; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Parents of children with cancer encounter an exceptionally difficult life experience. Acute and long-lasting distress adds to the initial traumatic experience of being told that a family member suffers from a potentially fatal illness. READ MORE