Sökning: "back scattered light"

Hittade 4 avhandlingar innehållade orden back scattered light.

  1. 1. Quantitative cataract measurement with the Scheimpflug technique

    Författare :Wen Qian; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Scheimpflug photography; back scattered light; cataracts; human lens nuclear opacities; aqueous suspension of polystyrene spheres; standard of opacity;

    Sammanfattning : Cataract is the most prevalent blinding eye disease. Scheimpflug photography is an objective method for documentation of lens nuclear opacity. Using the Scheimpflug slit-lamp technique, a photograph, in focus from the anterior surface of the cornea to the posterior surface of the lens, can be obtained. LÄS MER

  3. 2. Multi-Dimensional Quantitative Laser-based Diagnostics - Development and Practial Applications

    Författare :Rikard Wellander; Förbränningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Post injection; Structured illumination; Mie scattering; Dense sprays; Extinction coefficient; Signal attenuation; Laser extinction; Multiple scattering; Scattering measurements; Planar laser induced fluorescence; Time resolved; Imaging through turbulent media; Three-dimensional image acquisition; Diesel particulate filter regeneration; Wall impingent; Biodiesel; LII; Large-bore gas Engine; Pre-chamber ignition; Fysicumarkivet A:2014:Wellander;

    Sammanfattning : Laser based optical diagnostic methods are routinely used in combustion research. Many of the more common approaches are based on illuminating a cross-section of the sample with a thin laser sheet. For example, by targeting an electronic transition in a molecule, its concentration within the plane illuminated by the laser sheet can be deduced. LÄS MER

  4. 3. Laser doppler tissue flowmetry : fiberoptic methods in microvascular research

    Författare :Göran Salerud; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : Laser Doppler flowmetry (LDF) constitutes a method for measuring the flux of blood cells in the microcirculatory bed. Photons are scattered in the moving blood cells, where they undergo a frequency shift according to the Doppler principle. LÄS MER

  5. 4. Characterizing the pancreatic "isletome" : 3D optical imaging to study diabetes

    Författare :Max Hahn; Ulf Ahlgren; András Gorzsás; Leif Carlsson; Alvin C. Powers; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; 3D imaging; fluorescence microscopy; 3D image analysis; technique development; diabetes; Islet of Langerhans; Insulin; β-cell mass; pancreas; anatomy; molecular medicine medical sciences ; molekylär medicin medicinska vetenskaper ; medicinsk biokemi; Medical Biochemistry;

    Sammanfattning : The pancreas is a specialised multipurpose organ, that can be separated into two major compartments: endocrine and exocrine. The exocrine part makes up the majority of the organ volume and functions to secrete digestive enzymes into the small intestine. LÄS MER