Sökning: "Gunnar Hellström"

Visar resultat 1 - 5 av 15 avhandlingar innehållade orden Gunnar Hellström.

  1. 1. Physiological and pathophysiological cerebrovascular regulation monitored by transcranial doppler

    Författare :Gunnar Hellström; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP;

    Sammanfattning : PHYSIOLOGICAL AND PATHOPHYSIOLOGICAL CEREBROVASCULAR REGULATION MONITORED BY TRANSCRANIAL DOPPLER Thesis by Gunnar Hellström, M D., Department of Clinical Neuroscience, Division of Neurology, Karolinska Hospital and Insbtute, Stocknolm, Sweden Transcranial Doppler ultrasonography (TCD) became available in the middle of the 1980s as a new technique for examinmg cerebral circulation. LÄS MER

  2. 2. Jordbrukspolitik i industrisamhället med tyngdpunkt på 1920- och 1930-talen

    Författare :Gunnar Hellström; Stockholms universitet; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Political science; Statsvetenskap;

    Sammanfattning : .... LÄS MER

  3. 3. Parallel computing of fluid flow through porous media

    Författare :Gunnar Hellström; Luleå tekniska universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

    Sammanfattning : Fluid flow through porous media takes place in a variety of technical areas including ground water flow, flow through embankment dams, paper making, composites manufacturing, filtering, drying and sintering of iron ore pellets. When modelling these kinds of flows it is common practice to use averaging techniques rather than computing the detailed flow field in every single pore. LÄS MER

  4. 4. Internal erosion in embankment dams : fluid flow through and deformation of porous media

    Författare :J. Gunnar I. Hellström; Luleå tekniska universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

    Sammanfattning : A basic understanding of fluid flow through a porous media facilitates a comprehensive understanding of internal erosion in embankment dams. Hence, it is necessary to reveal the detailed seepage flow, the flow-induced forces acting within the porous media and the fluid flow deformation of the porous media. LÄS MER

  5. 5. The clinical perspective on malignancies in renal transplanted patients

    Författare :Vivan Hellström; Tomas Lorant; Gunnar Tufveson; Gunilla Enblad; Per Lindnér; Uppsala universitet; []
    Nyckelord :renal transplantation; malignant tumours;

    Sammanfattning : Post-transplant malignancies cause significant morbidity and mortality. In this thesis we investigated malignancies in renal transplanted patients from a clinical viewpoint. The use of regional tumour registries considerably improved identification of pre- and post-transplant malignancies, which are generally underreported in transplant registries. LÄS MER