Sökning: "domain V"

Visar resultat 1 - 5 av 239 avhandlingar innehållade orden domain V.

  1. 1. Scattering on the Timoshenko Beam. Direct and Inverse Problems in the Time Domain

    Författare :Dag V. J. Billger; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; integro-differential equations; wave splitting; transient wave propagation; viscoelastic damping; wave propagators; inverse problems; scattering operators; Timoshenko beam; non-uniform beams; imbedding;

    Sammanfattning : This thesis concerns the use of time domain methods for treating direct and inverse scattering problems for flexural waves on beams. The Timoshenko equation is used throughout to describe the behaviour of such waves. LÄS MER

  3. 2. Unraveling the role of NOTCH3 dysfunction in disease and for therapy development : a focus on CADASIL

    Författare :Daniel V Oliveira; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The Notch signaling pathway, including the Notch3 receptor, is involved in many pivotal contexts of cell signaling and cell fate determination processes during development and in adulthood. Different mutations in the NOTCH3 receptor, which is highly expressed in vascular smooth muscle cells (VSMC), are associated with various diseases, including developmental disorders, several forms of cancer, and vascular dementia. LÄS MER

  4. 3. Flutter in sectored turbine vanes

    Författare :Olga V. Chernysheva; KTH; []
    Nyckelord :turbomachinery; aerodynamics; unsteady CFD; design; flutter;

    Sammanfattning : In order to eliminate or reduce vibration problems inturbomachines without a high increase in the complexity of thevibratory behavior, the adjacent airfoils around the wheel areoften mechanically connected together with lacing wires, tip orpart-span shrouds in a number of identical sectors. Although anaerodynamic stabilizing effect of tying airfoils together ingroups on the whole cascade is indicated by numerical andexperimental studies, for some operating conditions suchsectored vane cascade can still remain unstable. LÄS MER

  5. 4. The actinorhizal symbiosis of Datisca glomerata: Search for nodule-specific marker genes

    Författare :Irina V. Demina; Katharina Pawlowski; Franziska Krajinski; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; actinorhizal symbiosis; Datisca glomerata; nodule transcriptome; nodule-specific marker genes; cysteine-rich peptides; auxins and cytokinins; Plant Physiology; växtfysiologi;

    Sammanfattning : The actinorhizal symbiosis is entered by nitrogen-fixing actinobacteria of the genus Frankia and a large group of woody plant species distributed among eight dicot families. The actinorhizal symbiosis, as well as the legume-rhizobia symbiosis, involves the stable intracellular accommodation of the microsymbionts in special organs called root nodules. LÄS MER

  7. 5. The coronal heating problem

    Författare :Boris V. Gudiksen; Göran Scharmer; James Klimchuk; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Solen; Corona; Magneto hydro dynamik; Astronomy and astrophysics; Astronomi och astrofysik;

    Sammanfattning : The heating of the solar corona has been investigated during four of decades and several mechanisms able to produce heating have been proposed. It has until now not been possible to produce quantitative estimates that would establish any of these heating mechanism as the most important in the solar corona. LÄS MER