Sökning: "curvature"

Visar resultat 1 - 5 av 306 avhandlingar innehållade ordet curvature.

  1. 1. A computational approach to curvature sensing in lipid bilayers

    Författare :Federico Elías-Wolff; Alexander Lyubartsev; Max Berkowitz; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; curvature sensing; membrane curvature; cardiolipin; amphipathic helix; symmetric multimers; lipid bilayer; molecular dynamics; Biophysics; biofysik;

    Sammanfattning : Local curvature is a key driving force for spatial organization of cellular membranes, via a phenomenon known as membrane curvature sensing, where the binding energy of membrane associated macromolecules depends on the local membrane shape. However, the microscopic mechanisms of curvature sensing are not well understood. LÄS MER

  2. 2. A structural study into the boundary surface and associated curvature of three-dimensional mesoporous silica crystals

    Författare :Keiichi Miyasaka; Osamu Terasaki; Reinhard Nesper; Stockholms universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; mesoporous crystal; electron crystallography; electrostatic potential map; equi-potential surface; curvature; multiplly-twinned particle; Chemistry; Kemi; Structural Chemistry; strukturkemi;

    Sammanfattning : Since their first discovery in the early 1990s, mesoporous crystals (MCs) have fascinated researchers in various fields because of their interesting structures and their potential uses. Electron crystallography (EC) gives the direct three-dimensional (3D) realization of a crystal as a reconstructed electrostatic potential map (EPM). LÄS MER

  3. 3. Curvature Estimation and Description

    Författare :Håkan Bårman; Linköpings universitet; []

    Sammanfattning : This paper presents a new method for detection and estimation of curvature. The algorithm is implemented in the hierarchical feature pyramid proposed in the GOP concept. Curvature is handled at the second level of the pyramid with a vector field description of the orientation of the image as input. LÄS MER

  4. 4. On vanishing-curvature extensions of Lorentzian metrics

    Författare :Lars Alexandersson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; projective curvature; indefinite metric; maximum principle; set-valued function; indefinite metric;

    Sammanfattning : .... LÄS MER

  5. 5. Semicontraction, Nonpositive Curvature, and Multiplicative Ergodic Theory

    Författare :Anders Karlsson; KTH; []
    Nyckelord :multipplicative ergodic theorems; monexpanding maps; isometry groups; random walks; nonpositive curvature;

    Sammanfattning : .... LÄS MER