Sökning: "wall stress"

Visar resultat 1 - 5 av 187 avhandlingar innehållade orden wall stress.

  1. 1. Regulation of aortic wall mechanics and stress An experimental study in man

    Detta är en avhandling från Institutionen för medicin och hälsa

    Författare :Håkan Åstrand; Linköpings universitet.; Linköpings universitet.; [2008]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Aorta; wall stress; remodeling; IMT; gender; diabetes mellitus; aging; collagen; elastin; MEDICINE Surgery Surgical research Vascular surgery; MEDICIN Kirurgi Kirurgisk forskning Kärlkirurgi;

    Sammanfattning : The abdominal aorta (AA) in man is a vulnerable artery prone to atherosclerosis as well as aneurysmatic dilation. The underlying aortic composition, mechanical properties as well as the mechanisms responsible for age-related changes and vascular disease are however largely unknown. LÄS MER

  2. 2. Effects of deep excavations in soft clay on the immediate sourroundings-Analysis of the possibility to predict deformations and reactions against the retaining system

    Detta är en avhandling från Institutionen för medicin och hälsa

    Författare :Anders Kullingsjö; [2007]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MIT-S1; Sheet pile wall; Soil-structure interaction; Strain; Stress; Ground surface settlement; Finite element method; Case history; Shear test; Shear strength; Pore pressure; Analysis; Constitutive models; Plane strain; Elastoplasticity; Laboratory tests; Factor of safety; Stiffness; e-ADP; Earth pressure; Anisotropy; Soft Clay; Deep excavation; Retaining wall; Shear stress; Deformation;

    Sammanfattning : When excavating in an urban environment, the evaluation of the magnitude and distribution of ground movements is an important part of the design process, since excessive movements can damage adjacent buildings and utilities. In order to minimize movement of the surrounding soil, a retaining wall support system is used for deep excavations to provide lateral support. LÄS MER

  3. 3. Mechanosensing in the vascular wall - the role of cellular microdomains in vascular remodeling

    Detta är en avhandling från Department of Experimental Medical Science, Lund Univeristy

    Författare :Sebastian Albinsson; Lunds universitet.; Lund University.; [2007]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Physiology; tissue culture; Histologi; cytokemi; histokemi; vävnadskultur; cytochemistry; histochemistry; wall stress; shear stress; hypertension; Histology; differentiation; growth; caveolin; smooth muscle; actin; Fysiologi; Cardiovascular system; Kardiovaskulära systemet;

    Sammanfattning : Popular Abstract in Swedish I denna avhandlig undersöks hur mekanisk sträckning påverkar den glatta muskulaturen som omger våra blodkärl. En ökad sträckning av blodkärlen sker till exempel vid högt blodtryck vilket leder till en förändrad struktur av kärlet, så kallad remodellering. LÄS MER

  4. 4. Towards Subject Specific Aortic Wall Shear Stress a combined CFD and MRI approach

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Johan Renner; Linköpings universitet.; Linköpings universitet.; Linköpings universitet.; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Engineering mechanics Fluid mechanics; TEKNIKVETENSKAP Teknisk mekanik Strömningsmekanik;

    Sammanfattning : The cardiovascular system is an important part of the human body since it transports both energy and oxygen to all cells throughout the body. Diseases in this system are often dangerous and cardiovascular diseases are the number one killer in the western world. LÄS MER

  5. 5. On the Modelling of Mechanical Dewatering in Papermaking

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Vinicius Lobosco; KTH.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; paper; modelling; dewatering; forming; wet pressing; fibre network stress; rheology; hysteresis; intra-fibre water; compressibility; structural stress; stress-strain; restricted gels; swelling;

    Sammanfattning : Most of the water fed into a paper machine is removedmechanically in the forming and press sections. One of thefactor which has an important influence on mechanicaldewatering, i.e. in both forming and pressing, is thestress-strain behaviour of the fibre network. LÄS MER