Sökning: "strengthening mechanisms"

Visar resultat 6 - 10 av 59 avhandlingar innehållade orden strengthening mechanisms.

  1. 6. Brain mechanisms in pain regulation

    Författare :Karin B Jensen; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The subjective sensitivity to pain differs greatly between individuals and neuroimaging has contributed to the understanding of the cerebral mechanisms involved in pain regulation. The descending pain inhibitory circuitry is a well defined cerebral network that enables regulation of afferent nociceptive information. LÄS MER

  3. 7. Metabolic disorders : genes and mechanisms

    Författare :Camilla Maffezzini; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Mitochondrial disorders constitute a subgroup of the large family of rare monogenic diseases called Inborn Errors of Metabolism (IEM), but defects in mitochondrial activity have also been reported in more common and complex pathologies. In the present thesis, I validate new disease-causing variants and study the underlying molecular defects in three different cases of IEM. LÄS MER

  4. 8. Thermomechanical Processing of Nickel-Base Alloy 825

    Författare :Munir Al-Saadi; Pär Jönsson; Christopher Hulme-Smith; Göran Engberg; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Alloy 825; Cast and wrought structures; Hot compression test; Microstructural evaluation; Modelling; Yield strength; Strengthening mechanisms; Teknisk materialvetenskap; Materials Science and Engineering;

    Sammanfattning : Alloy 825 material was studied using a Gleeble-3800 thermosimulatorby performing single-hot compression experiments.Optical microscopy and electron backscatter diffraction wereutilized to characterize the microstructure. Dynamicrecrystallization is not considerable in the as-cast alloy anddislocation recovery is deemed to be dominant. LÄS MER

  5. 9. Control of particles codeposition and strengthening mechanisms in nickel based nanocomposite coatings

    Författare :Santiago Pinate; Caterina Zanella; Peter Leisner; Mari Lindström; Jönköping University; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dispersion coatings; nanocomposite; Controlled particles codeposition; Surface treatment; ζ-potentials; Pulse-reverse deposition; Ultrasound agitation; Electrocrystallisation; Microstructure; Strengthening mechanisms; Hardness; Wear; Dispersionsbeläggning; nanokomposit; kontrollerad inkorporering av partiklar; ytbehandling; zeta-potential; bipolär pulsplätering; ultraljudsomrörning; elektrokristallisation; mikrostruktur; härdningsmekanism; hårdhet; nötning;

    Sammanfattning : Surface durability is a key factor in the service life of components. Depending on the aggressiveness of the environment, surface deterioration by wear or corrosion leads to failure of the bulk material and eventually to the loss of functionality of the component. LÄS MER

  7. 10. Strengthening and degradation mechanisms in austenitic stainless steels at elevated temperature

    Författare :Muhammad Farooq; Rolf Sandström; Göran Engberg; KTH; []
    Nyckelord :;

    Sammanfattning : With rapid economic developments and rising living standards, the demand for electricity all over the world is greatly increased. Due to high fuel costs, the steam boilers with higher steam temperature and pressure are needed to decrease the cost of power generation throughout the world extensively. LÄS MER