Sökning: "Cu precipitation"

Visar resultat 1 - 5 av 55 avhandlingar innehållade orden Cu precipitation.

  1. 1. Specific Precipitation of Biomolecules Using Synthetic Polymers

    Författare :Per-Olof Wahlund; Bioteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biotechnology; Polymerteknik; RNA; plasmid DNA; DNA; polyelectrolyte complexes; synthetic polymers; precipitation; affinity precipotation; Bioteknik; Polymer technology; biopolymers;

    Sammanfattning : Purification is a very important stage in biotechnological processes. The traditionally used precipitation techniques are generally nonspecific and thus one or more chromatographic steps are normally required. There is thus a need for new approaches to improve existing techniques. LÄS MER

  3. 2. Radiation Induced Precipitation in Reactor Pressure Vessel Steel Welds

    Författare :Kristina Lindgren; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; precipitation; irradiation damage; low alloy steel; reactor pressure vessel; atom probe tomography;

    Sammanfattning : Radiation induced clustering and precipitation affect the mechanical properties of the reactor pressure vessel (RPV) of a nuclear power plant, i.e. the material becomes embritteled. The combination of low Cu (0. LÄS MER

  4. 3. Understanding the Role of Molybdenum on the Precipitation in PH Stainless Steels

    Författare :MARCUS ANDERSSON; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; silicon; Precipitation; ageing; EFTEM; molybdenum; atom probe.; martensitic PH stainless steel;

    Sammanfattning : The main part of the present work concerns studies of the influence of molybdenum on the microstructure of martensitic PH stainless steels, during ageing at 475°C. A short investigation of the silicon impact has also been conducted. LÄS MER

  5. 4. Modelling of radiation damage and positron annihilation in metallic materials

    Författare :Qigui Yang; Pär Olsson; Bernardo Barbiellini; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Radiation damage; First-principles; Positron annihilation spectroscopy; Cu precipitation; Two-component density functional theory; Tungsten; Transition metals; Kärnenergiteknik; Nuclear Engineering; Physics; Fysik;

    Sammanfattning : The radiation damage is one of the key concerns in the research of materials used in radiation environments. In this thesis, we theoretically investigate the radiation damage phenomenon by focusing on two important topics: the defect production and evolution, and the defect characterization. The first part aims at two aspects. LÄS MER

  7. 5. Crystallisation Processing of Al-base Alloys

    Författare :Carl Jonas Fjellstedt; KTH; []
    Nyckelord :Al-B; Al-Ti-B; Al-Cu; Al-Si; primary precipitation; in-situ composite; lattice defects; microgravity;

    Sammanfattning : .... LÄS MER