Sökning: "Cations"

Visar resultat 21 - 25 av 248 avhandlingar innehållade ordet Cations.

  1. 21. Regulation of NMDA receptor properties by amino acids and cations : a biochemical and electrophysiological study

    Författare :Yun Liu; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :NMDA receptor; Glutamate; Glycine; [3H]MK-801 binding; Magnesium; Calcium; Tris; Potassium; Sodium; Proton; Xenopus oocytes; Spinal cord; Cerebral cortex; Receptor binding; Electrophysiology;

    Sammanfattning : NMDA receptors are glutamate-regulated ion channels that are permeable to Ca2+, Na+ and K+ and are sensitive to voltage-dependent Mg2+-block. To investigate the modulatory effects of amino acids and cations on NMDA receptors and the possible regional differences in the pharmacology of NMDA receptors, I used mainly two techniques in this thesis: electrophysiological analysis of expressed NMDA receptors in Xenopusoocytes and biochemical receptor binding using [3H]MK-801 in membrane preparations from the rat cerebral cortex and spinal cord. LÄS MER

  3. 22. Exploring N-alicyclic quaternary ammonium functional polymers as hydroxide exchange membranes

    Författare :Joel Olsson; Centrum för analys och syntes; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrolyte membrane; Anion exchange membranes; Anion exchange membrane fuel cells; Structure-property relationship; Quaternary ammonium cations; Alkaline stability; Synthesis; Characterization;

    Sammanfattning : As the global power generation is shifted toward renewable and intermittent sources, the importance of fuel cells and other energy storage and conversion devices is continually increasing. However, many of these technologies are still under development and further research is necessary before they can be implemented. LÄS MER

  4. 23. Conformational and Dynamical Aspects of Conjugated Polymers and Oligomers of Interest for Photoluminescence

    Författare :Mette Grage; Kemisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; femtosecond spectroscopy; conformations; anisotropy; excitation transfer; oligothiophene radical cations; MEH-PPV; Conjugated polymers; polythiophene; resonance Raman spectroscopy.; Chemistry; Kemi; Physics; Fysik;

    Sammanfattning : Transient absorption laser spectroscopy and resonance Raman spectrscopy have been used to study conjugated polymers and oligomers. To extract more information the measurements have been compared to computer simulations and calculations. LÄS MER

  5. 24. Chemical study of coexisting rock-forming silicates : a thermodynamic approach to crystal chemistry, distribution of cations and their relation in mix-crystals

    Författare :Surendra Kumar Saxena; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  7. 25. Lone-pair cations and alkaline earth spacers: A synthetic strategy for low dimensional magnetic compounds

    Författare :Rie Takagi; Stockholms universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER