Sökning: "Göran Olofsson"

Visar resultat 6 - 10 av 20 avhandlingar innehållade orden Göran Olofsson.

  1. 6. Till ömsesidig nytta : Entreprenörer, framgång och sociala relationer i centrala Jämtland ca. 1810-1850

    Författare :Sven Olofsson; Jan Lindegren; Göran Rydén; Staffan Granér; Uppsala universitet; []
    Nyckelord :Peasant; entrepreneur; businessman; carreer; political elite; social position; social capital; social network; trust; distrust; social relation; family; kin; kinship; symbolic kinship; godparent; friendship; acquaintance; household; farming; peddling; trade; industrialisation; credit; 19th century; Sweden; Rödön court district; agrarian history; economic history; social history; social differentiation; micro perspective; qualitative method.; Historia; History;

    Sammanfattning : The aim of this thesis is to analyse the mutual impact which social relations and entrepreneurship had in relation to the success of four actors in a rural area in northern Sweden at the beginning of the nineteenth century. Many Swedish scholars have studied the process of social differentiation, before the industrial revolution. LÄS MER

  3. 7. Human adenoviruses : new bioassays for antiviral screening and CD46 interaction

    Författare :Emma Andersson; Göran Wadell; Sigvard Olofsson; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Adenovirus; CD46; hemagglutination; antiviral; small molecule; screening; Virology; Virologi;

    Sammanfattning : Adenoviruses are common pathogens all over the world. The majority of the population has at some point been infected with an adenovirus. Although severe disease can occur in otherwise healthy individuals an adenovirus infection is most commonly self limited in these cases. LÄS MER

  4. 8. An experimental investigation of spur gear efficiency and temperature : A comparison between ground and superfinished surfaces

    Författare :Martin Andersson; Ulf Olofsson; Bengt-Göran Rosén; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gears; ground; superfinished; efficiency; temperature; running-in; dip lubrication; spray lubrication; Machine Design; Maskinkonstruktion;

    Sammanfattning : This thesis focuses on reliability when testing gear efficiency and on how gear mesh efficiency can be increased without detrimental effects on the gears. Test equipment commonly used in gear research was analysed to identify important parameters for gear efficiency testing. LÄS MER

  5. 9. A Comparative Investigation of Gear Performance BetweenWrought and Sintered Powder Metallurgical Steel : Utilizing In-situ Surface Profile Measurements to Investigate theInitiation and Evolution of Micropitting and Pitting Damage

    Författare :Edwin Bergstedt; Ulf Olofsson; Bengt-Göran Rosén; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gear testing; Micropitting; Pitting; Efficiency; Surface transformation; Kugghjulstestning; Micropitting; Pitting; Effektivitetsmätning; Yttransformationer; Machine Design; Maskinkonstruktion;

    Sammanfattning : Vehicle electrification is a strong trend that introduces new challenges, such as increased input speed of the transmission and increased power density. Alsothe noise emittance of the gearbox is of increasing importance, as the sound of the gearbox is no longer masked by the internal combustion engine. LÄS MER

  7. 10. Cam Roller Contact : Surfaces and Tribology

    Författare :Frédéric Cabanettes; Bengt-Göran Rosén; Ulf Olofsson; Högskolan i Halmstad; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wear reduction; camshaft; roller; surface topography; relocation; elasto plastic rough contact; elasto hydrodynamic lubrication; Mechanical engineering; Maskinteknik;

    Sammanfattning : The automotive industry and the design of engines are strongly ruled by performance and legislation demands. In the valve train, mechanical components such as camshafts and rollers are defined by specifications including more and more constraints concerning their ability to face wear thus prolonging lifetime. LÄS MER