Sökning: "magnesium"

Visar resultat 11 - 15 av 222 avhandlingar innehållade ordet magnesium.

  1. 11. Shaking the EF-Hand. Dynamics and Ion-Binding to Calmodulin and Calbindin D9k

    Författare :Anders Malmendal; Biofysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; magnesium; line shape; ion binding; EF-hand; cooperativity; conformational exchange; chemical shift; calmodulin; calcium; calbindin D9k; allostery; backbone dynamics; NMR; relaxation; Physical chemistry; Fysikalisk kemi;

    Sammanfattning : The work described in this thesis represents a biophysical approach, mainly using nuclear magnetic resonance (NMR) spectroscopy, to investigate the impact of magnesium ions on the EF-hand calcium-binding proteins calmodulin and calbindin D9k, as well as the dynamics of these proteins at low calcium levels. The x-ray structure of magnesium-saturated calbindin D9k shows a magnesium ion in only one of the two ion binding sites. LÄS MER

  3. 12. The social life of a membrane protein; It's complex

    Författare :Isolde Palombo; Daniel Daley; Said Eshaghi; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; membrane proteins; assembly; cofactors; magnesium; Escherichia coli; Biochemistry; biokemi;

    Sammanfattning : Membrane proteins are key players in many biological processes. Since most membrane proteins are assembled into oligomeric complexes it is important to understand how they interact with each other. Unfortunately however, the assembly process (i.e. LÄS MER

  4. 13. Oxygen-Alkali Treatment of Kraft Pulp and Cellobiitol. Model Experiments and Applied Studies of Interest for Oxygen Bleaching

    Författare :Bengt Järrehult; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; selectivity; pH-levels; copper; oxygen delignification; catalytic effects; iron; alkali; cellobiitol; magnesium; yield;

    Sammanfattning : During oxygen delignification of kraft pulp the alkalinity has a decisive influence upon the selectivity, defined as viscosity at a given kappa number. Using 0.2% pulp consistency in order to achieve constant pH-levels a minimum selectivity was reached at pH 13, corresponding to 0.1 M NaOH. LÄS MER

  5. 14. Characteristics of cast magnesium alloys : microstructures, defects and mechanical properties

    Författare :Haiping Cao; Anders Jarfors; Linköpings universitet; []
    Nyckelord :Mg alloys; microstructure; mechanical properties; defects; modelling; segregation bands; hot tear; mould constraint; semi-solid casting.; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Magnesium is the lightest of all structural metals. As such, and combined  with good mechanical and physical properties, it forms the basis for commercial alloys that have found successful use in a wide variety of applications. LÄS MER

  7. 15. Investigation of corrosion properties of metals for degradable implant applications

    Författare :Karin Beaussant Törne; Jonas Weissenrieder; Wolf-Dieter Mueller; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biodegradable; metal; zinc; magnesium; corrosion; electrochemistry; Teknisk materialvetenskap; Materials Science and Engineering;

    Sammanfattning : Nedbrytbara metaller utgör en ny klass av biomaterial med potential attersätta permanenta material i tillfälliga applikationer. Detta för att minskarisken för långvariga biverkningar. LÄS MER