Sökning: "digital photography"

Visar resultat 31 - 35 av 61 avhandlingar innehållade orden digital photography.

  1. 31. Screening for diabetic retinopathy : aspects of photographic methods

    Författare :Gunvor von Wendt; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Diabetic retinopathy; diabetic maculopathy; screening; retinal photography; photographic fields; grading scale; inter-observer agreement; inter-method agreement; monochromatic photography; retinal neovascularizations; sight-threatening diabetic retinopathy;

    Sammanfattning : Diabetic retinopathy (DRP) is a major cause of acquired blindness and visual impairment among people of working age as well as those aged 65 years or more. About 3-4% of the population has diabetes mellitus, 35-65% of the diabetic patients have some type of DRP and 10-35% have sight-threatening retinopathy. LÄS MER

  3. 32. Cleft Lip and Palate, Clinical and Methodological Studies

    Författare :Magnus Becker; Malmö Institutionen för kliniska vetenskaper; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; traumatology; cleft lip and palate. growth. weight. morphometry. evaluation. digital photographs. database. register. long-term. surgical. Millard. Langenbeck. Wardill. speech. facial growth; orthopaedics; Surgery; Kirurgi; ortopedi; traumatologi;

    Sammanfattning : Body dimensions of 2,936 newborns with cleft lip/palate (CLP) were compared with 2,031,140 singleton newborns between 1973 to 1992. The risk of cleft development was found to be associated with intra-uterine growth retardation - the more severe the cleft, the stronger the association. LÄS MER

  4. 33. Interaction mechanisms of pulsed laser beams at different wavelengths with matter

    Författare :Olga Yalukova; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Manufacturing Systems Engineering; Produktionsutveckling;

    Sammanfattning : This thesis presents an investigation of the interaction mechanism involved in processing of different engineering materials using pulsed TEA CO2- and Nd:YAG lasers. Several methods were used. Digital Speckle Photography (DSP) or Speckle Correlation was used to detect micro-structural changes in the material surface during laser irradiation. LÄS MER

  5. 34. Optical methods for the study of transparent media

    Författare :Eva-Lena Johansson; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Experimental Mechanics; Experimentell mekanik;

    Sammanfattning : In the fields of combustion and fluid mechanics, temperature-, density- and velocity fields are of interest to measure. Optical methods may be used to study transparent media, even transient events. Flames, gases and liquids are examples on transparent media, often called phase objects. LÄS MER

  7. 35. Combined speckle interferometry and speckle correlation for non-destructive testing

    Författare :Angelica Andersson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Experimental Mechanics; Experimentell mekanik;

    Sammanfattning : When a sample is studied during loading in a tensile test machine, the sample is often exposed to rigid body motions during loading at the same time as it deforms due to tension. Therefore, the small deformation field is hard, or impossible, to measure when it is overlaid by a large motion. LÄS MER