Sökning: "topology"

Visar resultat 1 - 5 av 495 avhandlingar innehållade ordet topology.

  1. 1. The Ins and Outs of Membrane Proteins Topology Studies of Bacterial Membrane Proteins

    Detta är en avhandling från Stockholm : Institutionen för biokemi och biofysik

    Författare :Mikaela Rapp; Gunnar von Heijne; Christopher Tate; [2006]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; membrane protein; topology; dual topology; ODONTOLOGY Biochemistry; ODONTOLOGI Biokemi;

    Sammanfattning : α-helical membrane proteins comprise about a quarter of all proteins in a cell and carry out a wide variety of essential cellular functions. This thesis is focused on topology analyses of bacterial membrane proteins. The topology describes the two-dimensional structural arrangement of a protein relative to the membrane. LÄS MER

  2. 2. Contributions to Pointfree Topology and Apartness Spaces

    Detta är en avhandling från Uppsala : Department of Mathematics

    Författare :Anton Hedin; Erik Palmgren; Viggo Stoltenberg-Hansen; Peter Schuster; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Constructive mathematics; General topology; Pointfree topology; Domain theory; Interval analysis; Apartness spaces; MATHEMATICS Algebra; geometry and mathematical analysis Mathematical logic; MATEMATIK Algebra; geometri och analys Matematisk logik; Mathematical Logic; Matematisk logik;

    Sammanfattning : The work in this thesis contains some contributions to constructive point-free topology and the theory of apartness spaces. The first two papers deal with constructive domain theory using formal topology. LÄS MER

  3. 3. Engineering membrane proteins for production and topology

    Detta är en avhandling från Stockholm : Department of Biochemistry and Biophysics, Stockholm University

    Författare :Stephen Toddo; Daniel Daley; Roslyn Bill; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Membrane protein; Over-expression; Protein production; Codon optimization; Escherichia coli; AraH; NarK; mRNA secondary structure; coding sequence; ribosome binding site; RBS; topology; split-GFP; biokemi; Biochemistry;

    Sammanfattning : The genomes of diverse organisms are predicted to contain 20 – 30% membrane protein encoding genes and more than half of all therapeutics target membrane proteins. However, only 2% of crystal structures deposited in the protein data bank represent integral membrane proteins. LÄS MER

  4. 4. Topology Meets Frustration : Exact Solutions for Topological Surface States on Geometrically Frustrated Lattices

    Detta är en avhandling från Stockholm : Department of Physics, Stockholm University

    Författare :Flore Kunst; Emil Bergholtz; Jack Lidmar; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Theoretical Physics; teoretisk fysik;

    Sammanfattning : One of the main features of topological phases is the presence of robust boundary states that are protected by a topological invariant. Famous examples of such states are the chiral edge states of a Chern insulator, the helical edge states of a two-dimensional Z2 insulator, and the Fermi arcs of Weyl semimetals. LÄS MER

  5. 5. Topology optimization of vehicle structures

    Detta är en avhandling från Linköping : Linköpings universitet

    Författare :Torbjörn Johansen; [2004]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; topology optimization; frame structure; vehicle structure; flexible joint; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : This thesis concerns topology optimization of vehicle structures. Vehicle structures are considered to be composed of beams joined together and the work has been focused on a method for beam topology optimization including joints. LÄS MER