Sökning: "christina t"

Visar resultat 1 - 5 av 48 avhandlingar innehållade orden christina t.

  1. 1. Phase-field modeling of stress-induced precipitation and kinetics in engineering metals

    Författare :Claudio F. Nigro; Christina Bjerkén; Ylva Mellbin; Pär A T Olsson; Reinhart Pippan; Malmö universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; phase-field theory; finite element method; corrosion; finite volume method; phase transformation; hydride; hydrogen embrittlement; linear elastic fracture mechanics;

    Sammanfattning : The formation of brittle compounds in metals operating in corrosive environments can be a tremendous source of embrittlement for industrial structures and such phenomenon is commonly enhanced in presence of stresses. To study this type of microstructural change modeling is preferred to experiment to reduce costs and prevent undesirable environmental impacts. LÄS MER

  3. 2. The ups and downs of T cells The role of costimulatory molecules in the modulation of T cell responses

    Författare :Christina Olsson; Institutionen för experimentell medicinsk vetenskap; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Immunologi; transplantation; serology; CD28; costimulation; CD152; IL-2; NF-kB; AP-1; superantigen; Immunology; T cell; serologi;

    Sammanfattning : T cell activation requires the combination of antigen in the context of MHC and costimulatory molecules to induce a functional immune response. For our studies, we primarily utilized superantigens (SAg) that bind MHC class II molecules as first signal. LÄS MER

  4. 3. Lineage stability and effector function of CD4+FOXP3+ regulatory T cells

    Författare :Christina Seitz; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : This work focuses on regulatory T (Treg) cell biology in the context of defining the role of forkhead box protein 3 (FOXP3) isoform expression and Treg mediated suppression via CTLA-4 (cytotoxic T-lymphocyte-associated protein 4). Treg cells are crucial in maintaining immunological tolerance and they in part act by suppressing dendritic cells (DCs). LÄS MER

  5. 4. Anti-citrulline immunity in rheumatoid arthritis : characterization of peptide-HLA interactions and CD4+ T cell responses

    Författare :Christina Gerstner; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Rheumatoid Arthritis (RA) is a complex, systemic autoimmune disorder characterized by chronic inflammation in small joints in hands and feet. It is a common disease that if untreated leads to joint destruction, disability, comorbidities and a reduced lifespan. LÄS MER

  7. 5. Black Truffles of Sweden : Systematics, Population Studies, Ecology and Cultivation of Tuber aestivum syn. T. uncinatum

    Författare :Christina Wedén; Leif Tibell; Eric Danell; James M. Trappe; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Tuber aestivum; Tuber uncinatum; Tuber mesentericum; ITS; spore reticulum; truffle cultivation; island ecology; populations; morphology; ecotype; Quercus robur; Biologi; Biology; Biologi;

    Sammanfattning : Tuber aestivum is an ectomycorrhizal ascomycete with underground fruit bodies. It is an economically important species, but has been regarded as endangered in Sweden. My inventory has increased the number of reported localities from 3 to 31. It has long been debated whether T. LÄS MER