Search for dissertations about: "R3"

Showing result 1 - 5 of 12 swedish dissertations containing the word R3.

  2. 1. Projective Links and Their Invariants

    Author : Maciej Mroczkowski; Oleg Viro; Jozef Przytycki; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Algebra and geometry; Real projective space; skein modules; Homfly polynomial; Kauffman polynomial; descending link diagram; Algebra och geometri; Algebra and geometry; Algebra och geometri;

    Abstract : This thesis consists of two papers about knots and links in the real projective space RP3. We present an algorithm to unknot diagrammatically knots and links in RP3. We extend two classical polynomial invariants of links in R3 to links in RP3. READ MORE

  4. 2. Structure and function of relaxins

    Author : Linda M. Haugaard-Kedström; Johan Rosengren; Torleif Härd; Linnéuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; relaxin; insulin-like peptide; peptide hormone; peptide synthesis and NMR; Organic Chemistry; Organisk kemi;

    Abstract : The relaxin/insulin superfamily is a group of peptide hormones that consists of ten members in human, namely relaxins 1-3, insulin-like peptides (INSL) 3-6, insulin and insulin-like growth factors (IGF) I-II. These peptides have various functions in the body, such as regulating growth, blood glucose levels,  collagen metabolism, germ cell maturation and appetite. READ MORE

  5. 3. Finite Element Methods for Thin Structures with Applications in Solid Mechanics

    Author : Karl Larsson; Mats G Larson; Garth N Wells; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; a priori error estimation; finite element method; discontinuous Galerkin; corotation; Kirchhoff-Love plate; curved beam; biharmonic equation; Mathematics; matematik;

    Abstract : Thin and slender structures are widely occurring both in nature and in human creations. Clever geometries of thin structures can produce strong constructions while requiring a minimal amount of material. READ MORE

  6. 4. High order trapezoidal rule-based quadratures for boundary integral methods on non-parametrized surfaces

    Author : Federico Izzo; Olof Runborg; Robert Krasny; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Matematik; Mathematics;

    Abstract : This thesis is concerned with computational methods for solving boundary integral equations (BIE) on surfaces defined without explicit parametrization, called Implicit Boundary Integral Methods (IBIM). Using implicit methods for describing surfaces, such as the level-set method, can be advantageous for complex geometries and problems where the surface evolves over time. READ MORE

  7. 5. Regulation of Injury Induced Schwann Cell Proliferation Schwann Cell Proliferation

    Author : Åsa Fex Svenningsen; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; estrogen; signal transduction; insulin like growth-factors; Schwann cell; peripheral; nerve regeneration; Djurfysiologi; Animal physiology; progesterone;

    Abstract : The purpose of this study was to investigate injury induced proliferation of Schwann cells with emphasis of the effects of the insulin-like growth factors (IGF-I and IGF-II) and the sex hormones progesterone and estrogen. Proliferation, measured as [3H] thymidine incorporation, was studied in cultured segments of the rat sciatic nerve or through the use of the thymidine analogue bromo- deoxy-uridine (BrdU) in combination with immunocytochemistry. READ MORE