Search for dissertations about: "Björn Johansson"

Showing result 6 - 10 of 68 swedish dissertations containing the words Björn Johansson.

  2. 6. Bone grafts and dental implants in the reconstruction of the severely atrophied, edentulous maxilla

    Author : Björn Johansson; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Surgery; dental implants; maxilla; grafted bone; implant failure; clinical study; computed tomography; cutting torque; Kirurgi; Surgery; Kirurgi; plastikkirurgi; Plastic Surgery;

    Abstract : In two prospective, clinical studies the stability of implants and prosthetic constructions were evaluated after three years of loading. In the first study, the implant and the bridge stability of 39 patients with 1-stage bone grafts, were compared to a reference-group of 37 patients who did not need bone grafts. READ MORE

  4. 7. Computer Vision Using Rich Features - Geometry and Systems

    Author : Björn Johansson; Matematik LTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; imagebased rendering; Computer vision; view synthesis; Mathematics; Matematik;

    Abstract : In this thesis a number of computer vision problems is discussed, in particular we study the problem of view synthesis. The focus is on using complex features to determine the geometry of the scene and the cameras, in contrast to traditional point-based methods. READ MORE

  5. 8. Metabolic Engineering of the Pentose Phosphate Pathway of Xylose Fermenting Saccharomyces cerevisiae

    Author : Björn Johansson; Teknisk mikrobiologi; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kemiteknik och kemisk teknologi; Chemical technology and engineering; xylulokinase; pentose phosphate pathway; genetic engineering; Saccharomyces cerevisiae; xylose; Microbiology; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi;

    Abstract : The aim of the work presented in this thesis is the improvement of xylose fermentation performance of recombinant Saccharomyces cerevisiae strains expressing XYL1 and XYL2 from Pichia stipitis, encoding xylose reductase (XR) and xylitol dehydrogenase (XDH). A recombinant strain of S. READ MORE

  6. 9. Multiscale Curvature Detection in Computer Vision

    Author : Björn Johansson; Gösta Granlund; Linköpings universitet; []
    Keywords : TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : This thesis presents a new method for detection of complex curvatures such as corners, circles, and star patterns. The method is based on a second degree local polynomial model applied to a local orientation description in double angle representation. READ MORE

  7. 10. Senile cardiac amyloidosis

    Author : Björn Johansson; Uppsala universitet; []
    Keywords : MEDICINE; MEDICIN;

    Abstract : .... READ MORE