Sökning: "Staffan Johansson"

Visar resultat 1 - 5 av 30 avhandlingar innehållade orden Staffan Johansson.

  1. 1. Pericellular matrix components and cell adhesion

    Författare :Staffan Johansson; Uppsala universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : .... LÄS MER

  2. 2. A Surface Engineering Approach to Reduction of Frictional Losses of Heavy Duty Diesel Engines

    Författare :Staffan Johansson; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ENGINEERING AND TECHNOLOGY; Cylinder Liner; Tribometer; Wear; Diesel Engine; Lubrication; Design of Experiments; Rig testing; Friction; Piston Ring; Oil consumption;

    Sammanfattning : Reducing emissions is a top priority within heavy duty diesel engine development and research. The aim of the work is to decrease the fuel consumption by decreasing frictional losses of the Power Cylinder Unit.Full scale testing of engine components improvements is time-consuming and costly. LÄS MER

  3. 3. Limonene Hydroperoxides in Allergic Contact Dermatitis. Radical Formation, Sensitizing Capacity and Immunogenic Complex Formation

    Författare :Staffan Johansson; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :allergic contact dermatitis; contact allergy; immunogenic complex; limonene hydroperoxides; local lymph node assay; patch testing; radicals; sensitizing capacity; skin;

    Sammanfattning : Contact allergy to fragrance compounds is an increasing problem in the western countries today. R-Limonene is one of the most common fragrance compounds; it is used in hygiene products and cosmetics as well as in industrial products such as hand cleansers and degreasers. LÄS MER

  4. 4. Surface Engineering Approach to Frictional Optimization

    Författare :Staffan Johansson; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Piston Ring; Lubrication; Rig testing; Tribometer; Design of Experiments; Cylinder Liner; Friction; Oil consumption; Diesel Engine; Wear;

    Sammanfattning : Reducing emissions is a top priority within heavy duty diesel engine development and research. The power cylinder system is a main contributor to emissions and accounts for about 50% of the total frictional losses found in the engine, so is important to optimize. LÄS MER

  5. 5. Högstadieungdomar skriver historia på bloggen : undervisning, literacy och historiemedvetande i ett nytt medielandskap

    Författare :Cecilia Johansson; Lars Petterson; Peter Reinholdsson; Staffan Selander; Umeå universitet; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; blog; history education; historical learning; literacy; historical consciousness; realistic fiction; secondary school; historia med utbildningsvetenskaplig inriktning; history of education; Education and Learning; Utbildning och lärande;

    Sammanfattning : The purpose of this thesis is to study the literacy formed when a class blog is used as a tool for students studying history and explore how this particular literacy is used to generate historical knowledge. The study was conducted during the course of a project in which ninth-grade students contributed entries to a common blog in the form of a diary written by individuals who experienced the Second World War. LÄS MER