Sökning: "Ray Larsson"

Visar resultat 16 - 20 av 22 uppsatser innehållade orden Ray Larsson.

  1. 16. Realistic Lighting in Autodesk Maya with Mental Ray Area Light

    Kandidat-uppsats, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad

    Författare :Nichlas Larsson; [2012]
    Nyckelord :;

    Sammanfattning : The knowledge on how to create realistic lighting in computer graphics is one part that sets a realistic scene apart from one that can easily be spotted to being made in a computer. There are however many methods to reach realistic results with lighting. LÄS MER

  3. 17. Quantitative Analysis of Bone Tissue Engineering Scaffolds and Skull Bones by means of Synchrotron and Conventional X-ray Computed Microtomography

    Master-uppsats, Teknisk biologi

    Författare :Emanuel Larsson; [2010]
    Nyckelord :X-ray Computed Microtomography; µ-CT; Pore3D; Hydroxyapatite; Bone Scaffolds; Bioglass ceramic scaffolds; Bioactivity; Bioresorption;

    Sammanfattning : The study of internal structure of materials has always been an essential issue in a variety of application fields, from the medical radiology to the materials science. X-ray computed microtomography (with both conventional and synchrotron radiation sources) has a great potential for these purposes because its three-dimensional and non destructive nature as well as the fact that it does not require any sample preparation and it allows to study samples under stress or after consecutive treatments. LÄS MER

  4. 18. Cryogenic Etching of the Electroplating Mold for Improved Zone Plate Lenses

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Daniel Larsson; [2010]
    Nyckelord :etching; plasma etching; zone plate; x-ray; nanofabrication; sidewall passivation; cryo; cryogenic; undercut;

    Sammanfattning : The fabrication of zone plate lenses that are used for focusing X-rays relies on nanofabrication techniques such as e-beam lithography, reactive ion etching, and electroplating. The circular grating-like zone plate pattern can have a smallest half-period, a so-called zone width, of down to 20 nm while it also needs to have a height that is 5 to 10 times the zone width to have good diffraction efficiency. LÄS MER

  5. 19. Textile dyeing in Mali : possibilities for small scale effluent treatment

    Master-uppsats, SLU/Dept. of Soil and Environment

    Författare :Hanna Larsson; [2009]
    Nyckelord :water treatment; textile dyes; artisanal; Mali;

    Sammanfattning : Water treatment is an important issue in Mali, an arid country where the Niger River is the mainrecipient for a large part of the effluents from industrial and small scale activities. Clothes dyed withsynthetic dyestuffs are an important part of the culture in Mali. LÄS MER

  7. 20. Establishing low-energy x-ray fields and determining operational dose equivalent conversion coefficients

    Uppsats för yrkesexamina på grundnivå, Medicinsk strålningsfysik (tills m KI)

    Författare :Ylva Larsson; [2008]
    Nyckelord :low energy x-rays; dose equivalent conversion coefficients; reference radiation fields; x-ray spectra; monte carlo simulation;

    Sammanfattning : Reference radiation fields for x-ray qualities are described by the International Organization of Standards (ISO). This study describes the procedure to establish nine different low energy X-ray qualities at the national metrology laboratory, Swedish Radiation Protection Authority, following the document ISO 4037. LÄS MER