Sökning: "John Thomas"

Visar resultat 1 - 5 av 26 avhandlingar innehållade orden John Thomas.

  1. 1. Modelling phase separation in Fe-Cr alloys : A continuum approach

    Författare :Thomas Barkar; John Ågren; Nele Moelans; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Phase separation; spinodal decomposition; nucleation; diffusion; thermodynamics; kinetics; steel; ferritic;

    Sammanfattning : The formation of Cr-rich and Fe-rich domains upon ageing of an initially homogeneous Fe-Cr alloy at elevated temperatures (300-600 ºC) is commonly referred to as phase separation. The behaviour originates from a miscibility gap in the Fe-Cr phase diagram. LÄS MER

  3. 2. Can Lactobacillus Reuteri Prevent Allergic Disease in Early Childhood?

    Författare :Thomas Abrahamsson; Maria Jenmalm; Bengt Björkstén; John Bienenstock; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : Background: An altered microbial exposure may be partly responsible for the increase of allergic diseases in populations with a western lifestyle. Activation of the immune system by microbes early in life is probably required for an accurate maturation of the immune system. LÄS MER

  4. 3. Novel Diagnostics and Computational Methods of Neutron Fluxes in Boiling Water Reactors

    Författare :John Loberg; Michael Österlund; Thomas Smed; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Void; BWR; neutron fluxes; channel bow; MCNP; 2D 3D; Physics; Fysik;

    Sammanfattning : The focus in this thesis is to improve knowledge of the BWR related uncertainties void, channel bow, and control rods. The presence of void determines the moderation of neutrons in BWRs. A high void fraction is less efficient in moderating neutrons than a low one. LÄS MER

  5. 4. Pedagogiska imperativ och sociala nätverk i svensk medborgarbildning 1812−1828

    Författare :Thomas Neidenmark; Annika Ullman; Torkel Jansson; Henrik Edgren; Donald Broady; John Strömberg; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; HUMANIORA; HUMANITIES; Associations; Civic Formation; Collective Biography; Database; Education; Educational Innovators; Enlightenment; Fraternity; Freemasons; History of Education; Networks; Pedagogization; Societies; Education; Pedagogik; History; Historia; pedagogik; Education;

    Sammanfattning : This thesis in the History of Education studies the pedagogization of Swedish society from 1812–1828. These ambitions were promoted by state officials and educational innovators who we­re tightly knit through social networks. LÄS MER

  7. 5. Properties of Ugandan minerals and fireclay refractories

    Författare :John Baptist Kirabira; Stefan Jonsson; Thomas Johansson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; kaolin; clay; Ugandan minerals; fireclay; refractory; powders characterization; beneficiation; ceramics; mullite; Materialvetenskap; Materials science; Teknisk materialvetenskap;

    Sammanfattning : Development of products which can be produced from a country’s natural resources is very important as far as the industrialization of a nation and saving foreign exchange is concerned. Presently, industries in Uganda and the other states in the Lake Victoria region import all refractory-related-consumables, as the demand cannot be met locally. LÄS MER