Search for dissertations about: "gamma prime"

Showing result 11 - 15 of 19 swedish dissertations containing the words gamma prime.

  2. 11. Aspects of creep-fatigue in gas turbine hot parts

    Author : Magnus Hasselqvist; Gunnar Härkegård; Linköpings universitet; []
    Keywords : creep; fatigue; TMF; gas turbine; modelling; life assessment; ageing; micro-structure; solute drag; back stress; Haynes 230; IN792;

    Abstract : The goal is reliable creep-fatigue lifing methodology for industrial gas turbines.A literature study on high temperature materials used in gas turbines reveals that:• Most testing/modelling work has focused on characterisation and modelling of material response in isothermal standard tests, i.e. creep, tensile and LCF tests. READ MORE

  4. 12. Oxygen Induced High Temperature Crack Growth in Ni-base Superalloys

    Author : Leif Viskari; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Diffusion; Environmental influence; Crack growth; Atom probe tomography; Electron Microscopy; Deformation; Crack tip oxidation; Hold-time fatigue;

    Abstract : Oxygen induced crack growth is a serious concern for the performance of Ni-base superalloys. These alloys are used in gas-turbine engines where they are exposed to hightemperatures, mechanical loads and oxygen-rich environments. READ MORE

  5. 13. Interaction of the genome maintenance proteins of oncogeneic herpesviruses with cellular chromatin

    Author : Muhammad Nouman Mughal; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : The Epstein-Barr virus (EBV) nuclear antigen (EBNA)-1 is the only viral protein expressed in all virus-infected cells and EBV-associated malignancies. Similar to the genome maintenance proteins (GMPs) of other gamma-herpesviruses, EBNA1 binds to both viral and cellular DNA and controls the replication and transcription of the viral genome. READ MORE

  6. 14. Strategies to enhance the potency of HIV-1 DNA vaccines

    Author : David Hallengärd; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Despite 30 years of intense research on HIV/AIDS, we have yet to arrive at a prophylactic vaccine that confers complete protection. This mission is complicated by the virus’s vast genetic variability and its ability to mask the targets for neutralizing antibodies. READ MORE

  7. 15. Variable viral genes as genetic immunogens

    Author : Karl Ljungberg; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Influenza; hemagglutinin; HIV-1; gp160; DNA vaccine; genetic immunization; CpG; GM-CSF; pseudovirus.;

    Abstract : Influenza and HIV-1 are two highly variable viruses that cause extensive morbidity and mortality in many countries. The most cost-effective medical intervention against influenza is vaccination but this has to be repeated annually because of the low antigenicity of the vaccine. READ MORE