Sökning: "plane curve"

Visar resultat 11 - 15 av 40 avhandlingar innehållade orden plane curve.

1. 11. Cohomology of arrangements and moduli spaces

   Författare :Olof Bergvall; Carel Faber; Jonas Bergström; Orsola Tommasi; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Algebraic geometry; moduli spaces; cohomology; toric arrangements; equivariant; point counts; finite fields; mixed Hodge structures; Mathematics; matematik;

   Sammanfattning : This thesis mainly concerns the cohomology of the moduli spaces ℳ3[2] and ℳ3,1[2] of genus 3 curves with level 2 structure without respectively with a marked point and some of their natural subspaces. A genus 3 curve which is not hyperelliptic can be realized as a plane quartic and the moduli spaces ?[2] and ?1[2] of plane quartics without respectively with a marked point are given special attention. LÄS MER

3. 12. Epitaxial thin films of group 4 transition metal diborides

   Författare :Claudia Schnitter; Hans Högberg; Johanna Rosén; Paul H. Mayrhofer; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Group 4 transition metal diboride films were deposited epitaxially onto different substrates, typically at 900 °C, using direct-current magnetron sputtering from compound targets of ZrB2, TiB2, and HfB2. Epitaxial ZrB2 has been deposited on Al2O3(0001), 4H-SiC(0001), and Si(100) describing the epitaxial relationships on Si(100) for the first time, where two relationships were observed from pole-figure analysis, namely A) in-plane: ZrB2[001] ∥ Si[110] and ZrB2[110] ∥ Si[110], out-of-plane: ZrB2(100) ∥ Si(100), and B) in-plane: ZrB2[11] ∥ Si[110] and the same rotated 90° around the 102 axis, out-of- plane: ZrB2(102) ∥ Si(100). LÄS MER

4. 13. On the relation between paperboard properties and packaging performance

   Författare :Gustav Marin; Sören Östlund; Mikael Nygårds; Christer Korin; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solid Mechanics; Hållfasthetslära;

   Sammanfattning : Paper-based materials, such as paperboard, are commonly used as packaging materials. Inaddition to the advantage that wood as a raw material is renewable, there are also many otherbenefits of paperboard. LÄS MER

5. 14. Adolescent Idiopathic Scoliosis : Postural Stability, Prognostic factors and Impact of Conservative Treatments on Radiologic, Clinical and Self-Reported Outcomes

   Författare :Marlene Dufvenberg; Allan Abbott; Birgitta Öberg; Paul Gerdhem; Hans Tropp; Josefine Naili; Linköpings universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Idiopathic Scoliosis; Postural stability; Spinal Appearance; Health-Related Quality of Life; Adherence; Physical Activity; Brace; Scoliosis-Specific Exercise; Prognosis; Survival Models;

   Sammanfattning : Background: Adolescent idiopathic scoliosis (AIS) is a three-dimensional distortion of spinal curvature of unknown cause that develops during puberty. If the frontal plane curvature exceeds a Cobb angle of 24°, full-time bracing is recommended to prevent curve progression, negative health consequences or need for surgery. LÄS MER

7. 15. Hierarchical Structuring of Mg2Si1-xSnx Alloys for Lower Thermal Conductivity and Thermal Conductivity as Probe for Structural Characterization

   Författare :Andrey Sizov; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; structural probing; Rietveld refinement; hot disc; spinodal decomposition; magnesium silicide-stannide; Microstructuring; phase separation; X-ray diffraction; thermal conductivity; thermoelectrics;

   Sammanfattning : The thermoelectric effect was discovered nearly 200 years ago, but it started to be utilized for waste heat recovery fairly recently. From the economical point of view, such application requires a cheap and efficient material, which is able to convert heat energy into electricity. LÄS MER