Sökning: "ion solution"

Visar resultat 1 - 5 av 236 avhandlingar innehållade orden ion solution.

  1. 1. Characterizing ions in solution by NMR methods

    Författare :Marianne Giesecke; István Furó; Peter Griffiths; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; electrophoretic NMR; diffusion NMR; NMR imaging; ion pairing; ion association; polyethylene oxide; metal-ion complex; Li ion batteries; electrolyte characterization; Kemi; Chemistry;

    Sammanfattning : NMR experiments performed under the effect of electric fields, either continuous or pulsed, can provide quantitative parameters related to ion association and ion transport in solution.  Electrophoretic NMR (eNMR) is based on a diffusion pulse-sequence with electric fields applied in the form of pulses. LÄS MER

  2. 2. Ions interacting with macromolecules NMR studies in solution

    Detta är en avhandling från KTH Royal Institute of Technology

    Författare :Yuan Fang; Istvan Furo; Monika Schönhoff; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; electrophoretic NMR; diffusion NMR; specific ion effects; Hofmeister; ion binding; Kemi; Chemistry;

    Sammanfattning : Specific ion effects, identified for more than hundred years, play an important role in a wide range of phenomena and applications. Several mechanisms such as direct ion interaction with molecules have been suggested to explain these effects, but quantitative experimental evidence remains scarce. LÄS MER

  3. 3. Classical and Car-Parrinello Molecular Dynamics Simulations of Polyvalent Metal Ions in Water

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Sami Amira; Kersti Hermansson; Imre Bako; [2005]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Inorganic chemistry; Car-Parrinello molecular dynamics simulations; ab initio calculations; ion; copper; aluminium; metal ion; water; aqueous solution; solvation; Oorganisk kemi; NATURAL SCIENCES Chemistry Inorganic chemistry; NATURVETENSKAP Kemi Oorganisk kemi;

    Sammanfattning : The aqueous solvation of metal ions is one of the long-standing and complex problems in chemistry, with implications for and applications in a broad range of biochemical and electrochemical systems, where water is the all-pervasive medium.This thesis describes computer simulations of Al3+(aq), Fe2+(aq), Fe3+(aq) and Cu2+(aq). LÄS MER

  4. 4. Studies of individual pancreatic -cells : Electrophysiological analysis of rhythmic behaviour and development of new techniques

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Staffan Dryselius; [1999]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cell biology; Diabetes; pancreatic beta-cells; insulin release; signal transduction; cytoplasmic calcium; oscillations; patch clamp; ATP-regulated potassium channels; voltage-dependent calcium channels; metabolism; calcium ion; strontium ion; manganese ion; wavelets; de-noising; pattern recognition; superfusion; solution changes; microscopic labelling; Cellbiologi; MEDICINE Morphology; cell biology; pathology Cell biology; MEDICIN Morfologi; cellbiologi; patologi Cellbiologi; medicinsk cellbiologi; Medical Cell Biology;

    Sammanfattning : The insulin concentration in blood varies periodically, which is believed to prevent down-regulation of the hormone receptors. Loss of the regular insulin oscillations is considered to be an early sign of developing diabetes. LÄS MER

  5. 5. Ion Tracks for Micro- and Nanofabrication From Single Channels to Superhydrophobic Surfaces

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Reimar Spohr; Lars Westerberg; Lars Montelius; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ion track; single ion; real time; phase detection; conductometric cell; conductometry; electro replication; microtechnology; nanotechnology; surfactant; self organization; GMR; magnetic; sensor technology; hydrophobic; tilted texture.; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik; Materialvetenskap; Materials Science;

    Sammanfattning : A method is described for preset-count irradiations between 1 and 100 ions singling-out individual ions from an ion beam with more than a billion ions arriving per second. The ion tracks are etched in a conductometric system with real-time evaluation of the acquired data. The etch process can be interrupted when reaching a preset channel diameter. LÄS MER