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Found 4 essays matching the above criteria.

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

    University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Author : Philip Stjärneblad; [2021]
    Keywords : 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;

    Abstract : 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. READ MORE

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

    University essay from Uppsala universitet/Kemisk och biomolekylär fysik; Uppsala universitet/Energimaterialens fysik

    Author : Adi Bijedic; [2021]
    Keywords : ;

    Abstract : 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. READ MORE

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

    University essay from Uppsala universitet/Institutionen för geovetenskaper

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

    Abstract : 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. READ MORE

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

    University essay from SLU/Dept. of Animal Nutrition and Management

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

    Abstract : 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. READ MORE