Sökning: "K channels"

Visar resultat 16 - 20 av 146 avhandlingar innehållade orden K channels.

  1. 16. Role of water channels in kidney and lung

    Författare :Yanhong Li; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Aquaporins (AQPs) are membrane proteins that function as water channels facilitating a rapid and regulated transport of water across cell membranes. AQPs in kidney and lung play pivotal roles for the regulation of water homeostasis. LÄS MER

  3. 17. 60 GHz Wireless Propagation Channels: Characterization, Modeling and Evaluation

    Författare :Carl Gustafson; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; 60 GHz; mm-wave; IEEE 802.11ad; IEEE802.15.3c; Channel measurements; Channel modeling; propagation; MIMO; Beamforming; Spatial Multiplexing;

    Sammanfattning : To be able to connect wirelessly to the internet is nowadays a part of everyday life and the number of wireless devices accessing wireless networks worldwide are increasing rapidly. However, with the increasing number of wireless devices and applications and the amount available bandwidth, spectrum shortage is an issue. LÄS MER

  4. 18. Vasodilator actions of EDHF and anandamide

    Författare :David Andersson; Avdelningen för klinisk kemi och farmakologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; vanilloid receptors; afferent neurons; anandamide; cannabinoids; potassium channels; hyperpolarization; vasodilation; Vascular endothelium; arteries; airways; Pharmacological sciences; pharmacognosy; pharmacy; toxicology; Farmakologi; farmakognosi; farmaci; toxikologi;

    Sammanfattning : Vasodilator responses to endothelium-derived hyperpolarizing factor (EDHF) and anandamide in isolated arteries were investigated. A combination of the potassium channel blockers charybdotoxin and apamin inhibits EDHF-mediated relaxations. LÄS MER

  5. 19. Molecular aspects on voltage-sensor movement

    Författare :Amir Broomand; Fredrik Elinder; Guiscard Seebohm; Linköpings universitet; []
    Nyckelord :Potassium channels; voltage-gated; chemistry; metabolism; physiology; patch-clamp techniques; oocytes; MEDICINE; MEDICIN;

    Sammanfattning : Voltage-gated ion channels are fundamental for electrical signaling in living cells. They are composed of four subunits, each holding six transmembrane helices, S1-S6. Each subunit contains a voltage-sensor domain, S1-S4, and a pore domain, S5-S6. LÄS MER

  7. 20. Performance Analysis of Massive MIMO in Non-Ideal Settings

    Författare :Nikolaos Kolomvakis; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; massive MIMO; sparse channels; Achievable rate; IQ imbalance;

    Sammanfattning : Recent years have witnessed an unprecedented explosion in mobile data traffic, due to the expansion of numerous types of wireless devices, which have enabled a plethora of data-hungry applications. Novel techniques, such as massive multiple-input multiple-output (MIMO) systems, represent potential candidates to support these formidable demands. LÄS MER