Sökning: "zinc ions"

Visar resultat 21 - 25 av 64 avhandlingar innehållade orden zinc ions.

  1. 21. Electrochemical Biosensors Based on Functionalized Zinc Oxide Nanorods

    Författare :Muhammad Asif; Magnus Willander; Omer Nour; Kim Bolton; Linköpings universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : The semi-conductor zinc oxide (ZnO), a representative of group II-VI has gained substantial interest in the research community due to its novel properties and characteristics. ZnO a direct band gap (3.4eV) semi-conductor has a stable wurtzite structure. LÄS MER

  3. 22. Nanopolysaccharides for adsorption of heavy metal ions from water

    Författare :Peng Liu; Qi Zhou; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Trä och bionanokompositer; Wood and Bionanocomposites;

    Sammanfattning : With population expansion and industrialization, heavy metal has become one of the biggest and most toxic water pollutants, which is a serious problem for human society today. The aim of this work is to explore the potential of nanopolysaccharides including nanocellulose and nanochitin to remove metal ions from contaminated water. LÄS MER

  4. 23. Regulation of Aquaporins by Proteins, Metal ions and Phosphate groups

    Författare :Stefan Kreida; Biokemi och Strukturbiologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; aquaporin-2; aquaporin-0; calmodulin; LIP5; phosphorylation; calcium; zinc; protein-protein interactions; aquaporin regulation; trafficking; gating;

    Sammanfattning : Aquaporins (AQPs) are membrane-bound intrinsic water channels that allow the passive diffusion of water and small solutes across cellular membranes. There are 13 highly conserved isoforms of these channels in human, which differ in specificity, regulation and localisation in cells and tissues. LÄS MER

  5. 24. Quantified In Situ Analysis of Initial Atmospheric Corrosion : Surface heterogeneity, galvanic effects and corrosion product distribution on zinc, brass and Galvalume

    Författare :Ping Qiu; Christofer Leygraf; Béatrice Hannoyer; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Atmospheric corrosion; Zinc; Brass; Galvalume; In Situ; Quantification.; Materials science; Teknisk materialvetenskap;

    Sammanfattning : The interaction of the surface of a pure metal or an alloy with the surrounding atmosphere occurs in a highly complex interfacial regime. During atmospheric corrosion this interfacial regime involves the metal surface, often covered by a naturally formed oxide layer of a few nanometers thickness; an aqueous adlayer, typically with a thickness of a few to a few tens of nanometers, and the atmosphere from which airborne particles, oxygen, and gaseous pollutants dissolve into the adlayer and influence the atmospheric corrosion process. LÄS MER

  7. 25. Towards simulating fully charged protein-DNA systems in water : Zif268-DNA as a test case

    Författare :Git Roxström; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Molecular Dynamics simulation; Zif268; zinc fingers; GROMOS; linkers; recognition sites; Fysik; Physics; Fysik; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : In this thesis, we develop a computing strategy to simulate fully charged protein-DNA systems with a general force field (GROMOS87). The ions neutralizing the phosphates (P-ions) are submitted to global symmetry constraints. A model exhibiting ionic-atmosphere effects on mobile P-ions was implemented via very weak restraint forces. LÄS MER