Sökning: "A-current"

Visar resultat 1 - 5 av 183 avhandlingar innehållade ordet A-current.

  1. 1. Applying the Pump and Leak Hypothesis. An experimental and theoretical investigation of the principles of ion regulation and excitability in the crustacean stretch receptor neuron

    Författare :Sten Theander; Människan i rörelse: hälsa och rehabilitering; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neurology; neuropsychology; lobster; stretch receptor neuron; leak current; Q-current; K-Cl cotransporter; A-current; mathematical model; excitability; GABA channel; neurophysiology; ion regulation; neuropsykologi; Neurologi; neurofysiologi;

    Sammanfattning : An invertebrate nerve cell preparation, the lobster stretch receptor neuron, was investigated with respect to maintenance of its resting voltage, intracellular ion concentrations and excitability using voltage clamp technique and ion-selective microelectrodes. It was found that the resting voltage (-65 mV) of microelectrode impaled cells is caused by (a) a homogenous population of K+ channels which we denoted as leak channels (b) an electrogenic and voltage-dependent Na-K pump current and (c) an inward microelectrode-induced "impalement" current carried mainly by Na+. LÄS MER

  2. 2. Beam Mode : Modelling optical systematics in the search for CMB B-mode polarisation

    Författare :Alexandre E. Adler; Jon Gudmundsson; Katherine Freese; Daniel Mortlock; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Physics; fysik;

    Sammanfattning : In this thesis, I describe several advances in the modelling of microwave telescopes.In particular, my collaborators and I have examined two potential sources of systematic error. The first concerns the non-idealities of a half-wave plate, which we have integrated into the beamconv software. LÄS MER

  3. 3. Applications of Computational Thermodynamics and Kinetics on Transformations in Stainless Steels

    Författare :Sten Wessman; Malin Selleby; Staffan Hertzman; Bosse Sundman; Hannu Hänninen; KTH; []
    Nyckelord :Stainless Steels; Duplex; Ferrite; Austenite; Computational Thermodynamics; Thermo-Calc; Dictra;

    Sammanfattning : Stainless steels are high-alloyed, usually with multiple components and often also dual matrix phases, as for duplex stainless steels. This make predictions and calculations of alloying effects on equilibria and transformations complicated. LÄS MER

  4. 4. Våld i nära relationer bland familjer som söker barn- och ungdomspsykiatrisk öppenvård. Förekomst och behandlares erfarenheter med att identifiera våldet

    Författare :Ole Hultmann; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; domestic violence DV ; intimate partner violence IPV ; child psychiatry; prevalence; routine questions; obstacles;

    Sammanfattning : The aim of the study was 1) to investigate the prevalence of intimate partner violence (IPV) among mothers visiting a Child and Adolescent Psychiatric unit (CAP) together with their child and 2) to explore clinicians´ experiences of routinely asking about IPV in a CAP with a standardized questionnaire. During one year, the prevalence of IPV was explored by clinicians routinely asking the mothers of the patients verbally if they had been subjected to IPV in a current or former relationship. LÄS MER

  5. 5. Residue currents on singular varieties

    Författare :Richard Lärkäng; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :weakly holomorphic functions; duality theorem; Coleff-Herrera products; Bochner-Martinelli currents; residue currents; singular varieties; analytic spaces; local analytic geometry; residue currents;

    Sammanfattning : This thesis concerns various aspects of the theory of residue currents. Particularly, we study residue currents on singular varieties and duality theorems for such currents. On a singular variety, there are various notions of holomorphic functions. LÄS MER