Sökning: "diffuse reflection"

Visar resultat 1 - 5 av 17 avhandlingar innehållade orden diffuse reflection.

  1. 1. Diffuse Optical Spectroscopy and Imaging of Turbid Media

    Författare :Can Xu; Lund University.; Lunds universitet.; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; upconverting nanoparticles; luminescence; fluorescence; inverse problem; diffuse reflection spectroscopy; biomedical optics; photon migration; biomedical imaging; gas spectroscopy; medical diagnostics; tomography; Fysicumarkivet A:2013:Xu;

    Sammanfattning : This thesis deals with optical spectroscopy and imaging of complex and strongly scattering turbid media. Focus is mainly placed on three topics, being i) diffuse optical spectroscopy of choroidal tumors, ii) gas spectroscopy in scattering materials using the GASMAS (gas in scattering media absorption spectroscopy) technique, and iii) luminescence diffuse optical imaging and tomography of tissues. LÄS MER

  2. 2. Two Problems on Existence and Approximation Related to the Boltzmann Equation

    Detta är en avhandling från Göteborg : Chalmers University of Technology

    Författare :Vladislav Panferov; Göteborgs universitet.; Gothenburg University.; [1999]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Boltzmann equation; Povzner type models; diffuse reflection; discrete-velocity models; existence for large data; weak compactness; consistency; convergence;

    Sammanfattning : In this thesis, two different types of problems related to the Boltzmann equation of kinetic theory are studied. The first part is devoted to establishing consistency and convergence for discrete-velocity models of the Boltzmann equation. For a new such model, introduced by the author jointly with A. LÄS MER

  3. 3. Some Problems on Iterated Maps and Kinetic Equations

    Detta är en avhandling från Göteborg : Chalmers University of Technology

    Författare :Lennart Falk; Göteborgs universitet.; Gothenburg University.; [2000]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; unimodal map; renormalization; superstable orbit; full family; linear Bolzmann equation; growth rates in Lp; stationary Bolzmann equation; existence and uniqueness; diffuse boundary reflection; convex boundary; measure-valued solution;

    Sammanfattning : .... LÄS MER

  4. 4. Optical spectroscopy and fluorescence imaging for cancer diagnostics

    Detta är en avhandling från Göteborg : Chalmers University of Technology

    Författare :Pontus Svenmarker; Lund University.; Lunds universitet.; [2012]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biomedical optics; Diffuse-reflection spectroscopy; Upconverting nanoparticles; Inverse problem; Fluorescence; Tomography; Imaging; Scattering media; Photon migration; Fysicumarkivet A:2012:Svenmarker;

    Sammanfattning : This work presents optical methods for diagnosing cancer. A complementary method for diagnosing eye cancer was investigated using a technique developed within this work named transscleral optical spectroscopy (TOS). LÄS MER

  5. 5. Seismic Studies of Paleozoic Orogens in SW Iberia and the Middle Urals

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Artem Kashubin; Uppsala universitet.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Reflection seismics; Traveltime tomography; Uralian orogeny; Variscan orogeny; Crustal structure; NATURAL SCIENCES Physics Other physics Geophysics; NATURVETENSKAP Fysik Övrig fysik Geofysik;

    Sammanfattning : Controlled source seismic methods were employed in this study to investigate the reflectivity and velocity structure of two Hercynian orogens – the Uralides and Variscides. Conventional common depth point (CDP) sections from five reflection seismic campaigns and a velocity model obtained from tomographic inversion of wide-angle observations were the main datasets studied from the Middle Urals. LÄS MER