Sökning: "tredimensionell avbildning"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden tredimensionell avbildning.

  1. 1. 2D & 3D phase retrieval for propagation-based X-ray phase-contrast tomography

    Master-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Philip Stjärneblad; [2021]
    Nyckelord :Propagation-based X-ray phase-contrast tomography; PB-PCT; Propagation-based X-ray phase-contrast Imaging; PB-PCI; 2d phase retrieval; 3d phase retrieval; TIE; sinogram consistency; reconstruction artefacts; Science General;

    Sammanfattning : Propagation-based X-ray phase-contrast tomography is a 3d imaging technique that utilizes two-dimensional projections from different angular views $\theta =[0,\pi]$ to reconstruct the 3D object information. The phase-contrast allows for higher feature contrast than conventional transmission tomography, as the phase interference gives rise to a sharp edge contrast. LÄS MER

  3. 2. Sustaining Orientation of Ubiquitin for Single Particle Imaging Using Electric Fields

    Kandidat-uppsats, Uppsala universitet/Kemisk och biomolekylär fysik; Uppsala universitet/Energimaterialens fysik

    Författare :Adi Bijedic; [2021]
    Nyckelord :;

    Sammanfattning : Single-particle imaging, or SPI, is a method used to obtain the three-dimensional structure of particles. Repeatedly aiming X-rays at samples of a particle produces diffraction patterns, which are combined to a best-fit three-dimensional model of the particle. SPI of proteins can be improved by orienting the protein before imaging. LÄS MER

  4. 3. Evolution of the Vascular Pattern in Mammals : Using Synchrotron Imaging to Visualise Hidden 3D Structures

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Jasper Ponstein; [2017]
    Nyckelord :Secondary ossification centres; Mammalia; vascularity; limb-bone evolution; Sekundära ossifieringscentra; däggdjur; vaskuläritet; lembensutveckling;

    Sammanfattning : The morphology and histology of long bones are important tools for understanding tetrapod locomotion and growth. In mammals, the epiphyses of long bones ossify from a secondary centre of ossification. The consensus is that vascular canals are closely tied to the formation of these centres. LÄS MER

  5. 4. Automatic Body Condition Scoring on Dairy Cows of the Swedish red breed

    Master-uppsats, SLU/Dept. of Animal Nutrition and Management

    Författare :Gabriella Eva Foschi Lundmark; [2016]
    Nyckelord :dairy cow management; automatic body condition score; three dimensional; ultrasonography; mjölkkors skötsel; automatisk hullbedömning; tredimensionell avbildning; ultrasonografi;

    Sammanfattning : The objective of this MSc thesis was to investigate parameters reported to be associated with dairy cows’ body condition and its changes. A valid reference of a dairy cow’s body condition was to be suggested and investigated for suitability in the development of a 3D imaging based automatic body condition scoring model. LÄS MER

  7. 5. Mekaniska egenskaper hos mjuka heterogena biomaterial : Tillämpning på polyuretanskum

    Kandidat-uppsats, Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Författare :Adrian Gerstädt; Emil Morgén; [2016]
    Nyckelord :Confocal laser scanning microscopy; Digital Image Correlation; Finite element methods; Polyurethane foam; Young’s modulus; Poisson’s ratio; Matlab; CalFEM; Konfokalmikroskopi; Digital bildkorrelation; Finita elementmetoder; Polyuretanskum; Elasticitetsmodul; Poissons tal; Matlab; CalFEM;

    Sammanfattning : Denna rapport behandlar genomförandet av ett examensarbete på högskolenivå inom maskinteknik vid Högskolan i Borås. Examensarbetet har utförts hos SP Sveriges Tekniska Forskningsinstitut AB, enheterna SP Safety – Mechanical Research i Borås och Göteborg samt Food and Bioscience i Göteborg. LÄS MER