Search for dissertations about: "tbc"

Showing result 1 - 5 of 35 swedish dissertations containing the word tbc.

  2. 1. Epidemiological aspects of tuberculosis in Guinea-Bissau, West Africa

    Author : Per Gustafson; Enheten för infektionssjukdomar; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; tuberculin skin test; Infections; Infektioner; survival; mortality; case fatality rate; risk factor; incidence; Guinea-Bissau; Africa; epidemiology; Mycobacterium tuberculosis; HIV-2; HIV-1; HIV; Tbc; Tuberculosis; TB;

    Abstract : Tuberculosis (TB) has plagued the humanity for several thousands of years. The bacteria causing TB is mainly spread from person to person as an aerosol transmission. It is estimated that one third of the world’s population is infected with the disease; about 10% of these will develop active TB during their lifetime. READ MORE

  4. 2. Reduction of heat transfer and heat load in internal combustion engines

    Author : Joop Somhorst; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; efficiency; TBC; thermal barrier coating; surface roughness; engine; heat transfer; emissions; alumina; zirconia;

    Abstract : Thermal insulation of the combustion chamber in an engine has great potential to reduce fuel consumption and CO2 emissions. Research on thermal barrier coatings (TBC) has been performed since the early eighties to address this potential. READ MORE

  5. 3. Failure of thermal barrier coatings under thermal and mechanical fatigue loading : microstructural observations and modelling aspects

    Author : Håkan Brodin; Anette M. Karlsson; Linköpings universitet; []
    Keywords : thermal barrier coating; TBC; delamination; crack initiation; crack propagation; crack growth; oxidation; alumina; spinel; MCrAIY; diffusion; fatigue; modelling; modeling; degradation; TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : Industrial and air-borne gas turbine hot components suffer from creep, oxidation, corrosion and microstructural degradation if not shielded from the hot and aggressive combustion gases. Two major strategies commercially available are adopted; film cooling by pressurised air and application of protective coatings. READ MORE

  6. 4. Mechanical Behaviour of Gas Turbine Coatings

    Author : Mats Eskner; KTH; []
    Keywords : thermal barrier coatings; TBC; small punch test; miniaturised disc bending test; mdbt; spherical indentation; gas turbine coatings; NiAl; NiCoCrAlY; NiCrAlY; mechanical properties;

    Abstract : Coatings are frequently applied on gas turbine components inorder to restrict surface degradation such as corrosion andoxidation of the structural material or to thermally insulatethe structural material against the hot environment, therebyincreasing the efficiency of the turbine. However, in order toobtain accurate lifetime expectancies and performance of thecoatings system it is necessary to have a reliableunderstanding of the mechanical properties and failuremechanisms of the coatings. READ MORE

  7. 5. Mechanical behaviour of NiAl and NiCoCrAlY coatings

    Author : Mats Eskner; KTH; []
    Keywords : coatings; nial; nicocraly; tbc; miniature disc bending test; ductility;

    Abstract : .... READ MORE