Sökning: "diffuse"

Visar resultat 6 - 10 av 532 avhandlingar innehållade ordet diffuse.

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

   Författare :Can Xu; Atomfysik; []
   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

3. 7. Modelling of Diffuse Brain Injury: Combining Methods to Study Possible Links between Transient Intracranial Pressure and Injury

   Författare :Ulrika Krave; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; animal model; astrocytosis; diffuse axonal injury; neurofilaments; diffuse brain injury; rotational acceleration; closed head trauma; rabbit; finite element analysis; intracranial pressure; injury mechanisms;

   Sammanfattning : The objectives of this research are the study of sagittal rotational acceleration induced diffuse brain injury mechanisms. Such injuries are common in vehicle accidents in particular; the consequences range from mild to severe symptoms and may lead to persistent neurological dysfunction. LÄS MER

4. 8. Model-based Approaches to Diffuse Optical Imaging and Dosimetry

   Författare :Johan Axelsson; Atomfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; photodynamic therapy; diffuse light propagation; fluorescence; imaging; dosimetry; inverse problem;

   Sammanfattning : The work within this thesis investigates Photodynamic therapy and Fluorescence imaging for therapeutics and visualization of deeply embedded lesions. Photodynamic therapy (PDT) is a cancer treatment modality that can eradicate tumors when light, a photosensible drug and oxygen are present. LÄS MER

5. 9. Local structure of perovskite ferroelectric ceramics as revealed by 3D electron diffuse scattering : A walk in between the Bragg peaks

   Författare :Alexandra Neagu; Cheuk-Wai Tai; Gunnar Svensson; Kenji Kaneko; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electron diffraction; Diffuse scattering; Local structural disorder; Perovskite; Ferroelectric ceramics; Transmission electron microscopy; Inorganic Chemistry; oorganisk kemi;

   Sammanfattning : Local structural disorder in crystalline materials plays a crucial role in understanding their properties. The means to study structural disorder is diffuse scattering (DS). LÄS MER

7. 10. Diffuse-Interface Simulations of Capillary Phenomena

   Författare :Walter Villanueva; Gustav Amberg; Steffen Hardt; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; capillary-driven flows; wetting; Cahn-Hilliard Navier-Stokes system; multicomponent and multiphase flows; parallel adaptive computing; Other engineering mechanics; Övrig teknisk mekanik;

   Sammanfattning : Fluid flows mainly driven by capillary forces are presented in this thesis. By means of modeling and simulations, interesting dynamics in capillary-driven flows are revealed such as coalescences, breakups, precursor films, flow instabilities, rapid spreading, rigid body motions, and reactive wetting. LÄS MER