Sökning: "ion channel"

Visar resultat 1 - 5 av 206 avhandlingar innehållade orden ion channel.

  1. 1. Ion channel control of phasic insulin secretion

    Författare :Xingjun Jing; Diabetes - öpatofysiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; phasic insulin secretion; Diabetes; pancreatic β-cells; ClC chloride channel; exocytosis; CaV channel;

    Sammanfattning : Glucose-stimulated insulin secretion exhibits a biphasic pattern. The mechanism underling biphasic insulin secretion is not fully understood, but consensus exists that an elevation in [Ca2+]i is required for both first- and second-phase insulin secretion. LÄS MER

  3. 2. A Solution Exchange Platform for Exposure of Cells to Chemical Waves

    Författare :Jessica Olofsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; waveform synthesis; solution exchange; cell signalling; patch clamp; receptor; high through-put; microfluidics; microfabrication; channel; chemical oscillations; ion channel; poly dimethylsiloxane ; drug discovery;

    Sammanfattning : This thesis presents the development, characterization and suggested applications of a platform for controlling the chemical environment around a cell or a cell constituent. The platform is unique in its capability to combine rapid solution switching with precise timing and access to a manifold of solution environments. LÄS MER

  4. 3. Performance and Security Analysis for GPU-Based Applications

    Författare :Adrian Horga; Petru Ion Eles; Zebo Peng; Ahmed Rezine; Sudipta Chattopadhyay; Nicola Bombieri; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Graphics Processing Units (GPUs) are becoming more and more prevalent in general-purpose computing. GPUs are used in areas from embedded systems to super-computing. LÄS MER

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

    Författare :Reimar Spohr; Lars Westerberg; Lars Montelius; Uppsala universitet; []
    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.; Physics; 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

  7. 5. Conformational Changes during Potassium-Channel Gating

    Författare :Jakob Renhorn; Fredrik Elinder; David Engblom; Stephan Pless; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; ion-channel; electrophysiology; neuron; Jonkanal; neurologi; elektrofysiologi; neuron; aktionspotential;

    Sammanfattning : Voltage-gated ion channels have a paramount importance in many physiological processes such as cell-to-cell communication, action potential-propagation, and cell motility. Voltage-gated ion channels are characterized by their ability to sense membrane voltage and to greatly change channel activity in response to small changes in the voltage. LÄS MER