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  • Gallenblase  (1)
  • Josephson tunneling  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 260 (1968), S. 269-274 
    ISSN: 1432-1912
    Keywords: Substance P ; Physalaemin ; Gall Bladder ; Pancreatic Secretion ; Substanz P ; Physalämin ; Gallenblase ; Pankreas-Sekretion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung 1. Substanz P-Extrakt aus Hirn (4150 E/mg Protein) und das Physalämin-ähnliche Peptid Pro-Asp(NH2)-Lys-Phe-Tyr-Gly-Leu-Eti-NH2 kontrahieren beim Hund die Gallenblase und stimulieren die Pancreas-Sekretion. Die Sekretion von Lebergalle bleibt konstant oder nimmt ab. Die Wirkung des Substanz P-Extraktes wird durch Inkubation mit Chymotrypsin zerstört. 2. Roher Substanz P-Extrakt aus Darm (22 E/mg Protein) wirkt wesentlich stärker als Hirnextrakt, wahrscheinlich wegen seines zusätzlichen Gehaltes an Sekretin und/oder Cholecystokinin. 3. Substanz P ist auch in diesen Wirkungen dem Physalämin und seinen Abkömmlingen sehr ähnlich.
    Notes: Summary 1. Substance P-extract from brain (4150 u/mg protein) and the physalaemin-like peptide Pro-Asp(NH2)-Lys-Phe-Tyr-Gly-Leu-Eti-NH2 contract the gall bladder and stimulate pancreatic secretion in the dog. Hepatic bile flow remains constant or is decreased. The activity of the substance P-extract is destroyed by incubation with chymotrypsin. 2. Crude substance P-extract from the intestine (22 u/mg protein) is much more effective than brain extract, probably because of its additional content of secretin and/or cholecystokinin. 3. In these actions, as in others, a close similarity between substance P and physalaemin derivatives is evident.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of superconductivity 12 (1999), S. 783-787 
    ISSN: 1572-9605
    Keywords: Josephson tunneling ; mesoscopic systems ; quantum dissipative systems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract We study exact self-duality in the model of a Brownian particle in a washboard (WB) potential which describes a Josephson junction (JJ) coupled to an environment, for arbitrary temperature and arbitrary form of the spectral density of the environment. To this end we introduce the quantum dissipative Villain model (QDVM), which models tunneling of a degree of freedom coupled to a linear quantum environment through an infinite set of states. We derive general exact mappings on various dual discrete representations (one-dimensional Coulomb gases or surface-roughening models) which are exactly self-dual. Then we show how the QDVM maps exactly onto the WB model and use duality relations to calculate the leading terms of the total impedance of a JJ circuit, for general frequency dependence of the spectral density of the environment and arbitrary temperature.
    Type of Medium: Electronic Resource
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