Sökning: "Henrik Åström"

Visar resultat 1 - 5 av 17 avhandlingar innehållade orden Henrik Åström.

  1. 1. Grease in elastohydrodynamic lubrication

    Författare :Henrik Åström; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Sammanfattning : The rheology of soap thickened greases has been investigated in a cone and plate rheometer and a model that includes base oil viscosity and temperature has been suggested and fitted to the results. With the use of a bouncing ball apparatus, the pressure coefficient of the limiting shear stress of the greases was determined. LÄS MER

  3. 2. Rheological and elastohydrodynamic properties of lithium, lithium complex and sodium soap greases

    Författare :Henrik Åström; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Sammanfattning : .... LÄS MER

  4. 3. Norden, nationen och historien : Perspektiv på föreningarna Nordens historieläroboksrevision 1919-1972

    Författare :Henrik Åström Elmersjö; Daniel Lindmark; Bengt Schüllerqvist; Samuel Edquist; Umeå universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Norden Associations; history; education; 20th century; historical culture; textbook revision; nationalism; myth; identity politics; hegemony; organization; Föreningen Norden; historia; utbildning; 1900-talet; historiekultur; läroboksrevision; nationalism; myt; identitetspolitik; hegemoni; organisation; historia med utbildningsvetenskaplig inriktning; history of education;

    Sammanfattning : This dissertation investigates the negotiation of history within the history textbook revision conducted by the Norden Associations between 1919 and 1972. The thesis combines an examination of the discussions surrounding the revision with an understanding of the organization of the revision process to study the negotiations between representatives of different historical cultures and the conditions within these historical cultures. LÄS MER

  5. 4. Dose Escalation with High Dose Rate Brachytherapy or Protons in Curative Radiotherapy of Prostate Cancer

    Författare :Lennart Åström; Lars Holmberg; Gunilla Enblad; Henrik Grönberg; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Prostate cancer; radiotherapy; brachytherapy; high dose rate; protons; PSA bounce;

    Sammanfattning : The aim of the thesis was to study the outcome and side effects after dose-escalated radiotherapy with high dose rate brachytherapy (HDR-BT) or proton beam therapy (PBT) boost in prostate cancer.The first cohorts of men in Sweden treated with either HDR-BT or PBT in combination with conventional photon beam therapy (2 Gray (Gy) fractions to 50 Gy) were analysed. LÄS MER

  7. 5. Democratic innovations in political systems : towards a systemic approach

    Författare :Magnus Adenskog; Joachim Åström; Jan Olsson; Henrik Serup Christiansen; Örebro universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Democratic innovations; online political participation; political institutions; political trust; political systems;

    Sammanfattning : There are many indicators that the representative democratic system is currently facing serious legitimacy challenges. Two central indicators of these challenges are changing patterns of political participation and a decline in system support. LÄS MER