Sökning: "ionic current"

Visar resultat 26 - 30 av 98 avhandlingar innehållade orden ionic current.

  1. 26. Ion channels and intrinsic membrane properties of locomotor network neurons in the lamprey spinal cord

    Författare :Di Wang; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Ion channels; calcium activated non-selective cation current ICAN ; L-type LVA calcium channels Cav 1.3 ; calcium channels; calcium imaging; NMDA; postinhibitory rebound PIR ; lamprey; central pattern generator CPG ; locomotion;

    Sammanfattning : NMDA-receptor dependent membrane potential oscillations and postinhibitory rebound are examples of intrinsic membrane properties of many neurons of rhythm-generating networks, and are considered to play major roles in the operation of the spinal locomotor network of the lamprey vertebrate model. A significant feature of many lamprey spinal cord neurons is their ability to generate pacemaker-like membrane potential oscillations in the presence of the glutamate agonist NMDA. LÄS MER

  3. 27. Charged Particle Transport: As Information Source about Ion Conductors, Dielectric Materials, and Drug Delivery Systems

    Författare :Göran Frenning; Jan Swenson; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Materialvetenskap; Materials science; Teknisk materialvetenskap; Engineering Science; teknisk fysik med inriktning mot fasta tillståndets fysik;

    Sammanfattning : This thesis treats charged particle transport, mostly in solid materials but also, to some extent, in aqueous media. Three major types of materials have been investigated; dielectric materials, ion conductors, and drug-delivery systems. LÄS MER

  4. 28. Charge Transport in Transition Metal Oxide Thin Films and Electrochromic Devices

    Författare :AnnaKarin Jonsson; Bengt-Erik Mellander; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering physics; Teknisk fysik; Engineering physics; Teknisk fysik; Solid State Physics; Fasta tillståndets fysik;

    Sammanfattning : Thin film devices for windows, mirrors, space applications and other purposes, have become an essential part of modern technology. A great advantage with a thin film device is the small amount of material used and the compact volume of the device. LÄS MER

  5. 29. Drug Diffusion and Nano Excipient Formation Studied by Electrodynamic Methods

    Författare :Ulrika Brohede; Maria Strømme; Göran Frenning; Hans Leuenberger; Uppsala universitet; []
    Nyckelord :Functional materials; drug release; electrodynamic methods; diffusion; Funktionella material;

    Sammanfattning : New smart drugs demand new smart drug delivery systems and also new smart analysis methods for the drug delivery process and material characterization. This thesis contributes to the field by introducing a new electrodynamic approach for studying the drug diffusion proc-esses as well as the formation of a new type of drug delivery systems, the so called mesoporous nano excipients. LÄS MER

  7. 30. In-line application of electric fields in capillary separation systems

    Författare :Björn Eriksson; Lars Blomberg; Magnus Andersson; Miroslav Macka; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; capillary separation; conductivity; in-line; electric field assisted liquid chromatography; Analytical chemistry; Analytisk kemi; Kemi; Chemistry;

    Sammanfattning : The magnitude of an electric field possible to apply in a capillary separation system is limited, because a high electric field causes a too high current through the capillary. Application of the electric field in-line will give an increased conductivity in the column, further increasing the risk of too high currents. LÄS MER