Sökning: "Lars Börjesson"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Lars Börjesson.

  1. 1. Coupled thermal, metallurgical and mechanical models of multipass welding

    Författare :Lars Börjesson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Datorstödd maskinkonstruktion; Computer Aided Design;

    Sammanfattning : This thesis deals with modelling and simulation of thermo mechanical processes in multipass welding. The aim of the simulations is to predict the residual stresses and/or the deformations that occur after welding. These residual stresses and deformations are caused by the high temperature gradients due to the local heating. LÄS MER

  3. 2. Neuromuscular function in the normal and inflamed colon. An experimental study in rat

    Författare :Lars Börjesson; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; ATP; dextran sulphate sodium; DMPP; enteric nervous system; McN-A-343; nitric oxide; non-adrenergic; rat; second messenger; smooth muscle; VIP;

    Sammanfattning : Neuromuscular function of the longitudinal muscle layer of distal colon was investigated in segments from normal rats and from rats with colitis induced by dextran sulphate sodium (DSS) at 3% for 3 or 7 days or 5% for 7 days. The study was performed in vitro, on spontaneous tone, or after precontraction. LÄS MER

  4. 3. Added value from biomass by broader utilization of fuels and CHP plants

    Författare :Christer Gustavsson; Roger Renström; Lars Nilsson; Pål Börjesson; Karlstads universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biofuels; bioeconomy; pyrolysis; gasification; leaching; Miljö- och energisystem; Environmental and Energy Systems;

    Sammanfattning : The present work, where additional value-creating processes in existing combined heat and power (CHP) structures have been examined, is motivated by a political- and consumer-driven strive towards a bioeconomy and a stagnation for the existing business models in large parts of the CHP sector.The research is based on cases where the integration of flash pyrolysis for co-production of bio-oil, co-gasification for production of fuel gas and synthetic biofuels as well as leaching of extractable fuel components in existing CHP plants have been simulated. LÄS MER

  5. 4. Cardiac function and long-term volume load : Physiological investigations in endurance athletes and in patients operated on for aortic regurgitation

    Författare :Kristofer Hedman; Eva Nylander; Éva Tamás; Lars Brudin; Mats Börjesson; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : Background and aims. The heart is a remarkably adaptable organ, continuously changing its output to match metabolic demands and haemodynamic load. But also in long-term settings, such as in chronic or repeated volume load, there are changes in cardiac dimensions and mass termed cardiac hypertrophy. LÄS MER

  7. 5. Att köra eller inte köra : Hur de äldre, åldrande och bilkörning har diskuterats i svensk transportpolitik

    Författare :Satu Heikkinen; Lars Tornstam; Mats Börjesson; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; ageing; old age; image; representation; gerontology; mobility; transportation; sociology; older drivers; driving licence; traffic safety; policy; discourse analysis; Foucault; archaelogy; categorisation; Sociology; Sociologi;

    Sammanfattning : The objective of this study is to analyse the formation of older and ageing drivers in Swedish transportation policy. Documents from the Swedish Government, the Riksdag and, in a few cases, public authorities and newspapers are analysed. The discourse-analytical framework is inspired by Foucault’s archaeology, which is used as a tool box. LÄS MER