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  • 1995-1999  (3)
  • 1965-1969
  • myocardial ischemia  (2)
  • 74.72.Yg  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Linear low-temperature dependence of the surface impedance of a Ba0.6K0.4BiO3 single crystal (1996)
    Springer
    JETP letters 64 (1996), S. 832-838 
    Details
    ISSN: 1090-6487
    Keywords: 84.37.+q ; 74.72.Yg ; 74.72.Bk ; 74.72.Hs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The temperature dependences of the real part R s and the imaginary part X s of the surface impedance Z s =R s +iX s of the superconductor Ba0.6K0.4BiO3 (T c ≃30 K) are measured at a frequency of 9.4 GHz. Its temperature dependence Z s (T) and that of the complex conductivity σ s (T) can be described on the basis of a two-fluid model under two assumptions: The density of superconducting carriers increases linearly, and the relaxation time increases as a power law (∝1/T 5), with decreasing temperature T〈T c . This model also describes well the curves Z s (T) and σs (T) recently measured for YBa2Cu3O6.95 and Bi2Sr2CaCu2O8 single crystals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.567255
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of opioid peptides on the development of ischemic cardiac arrhythmias under conditions of partial sympathetic denervation and laser irradiation (1999)
    Springer
    Bulletin of experimental biology and medicine 127 (1999), S. 338-340 
    Details
    ISSN: 1573-8221
    Keywords: myocardial ischemia ; cardiac arrhythmias ; opioid receptors ; laser irradiation ; sympathetic regulation of the heart
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The effects of intravenous administration of different opioid peptides on the development of ischemic cardiac arrhythmias under conditions of intraatrial laser irradiation (λ=632.8 nm) were studied in cats with transected cardiac branches of the right stellate ganglion and preserved sympathetic innervation of the ischemized area. Ischemia was caused by occlusion of the circumflex branch of the left coronary artery. It was found that the protective effects of dalargin were most powerful when sympathetic influences on the ischemic area were intestified by laser irradiation. Under these conditions DAGO showed more pronounced antiarrhythmic effects than DSLET.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02433374
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Implication of sympathetic innervation of the heart in antiarrhythmic action of intra-atrial laser irradiation (1998)
    Springer
    Bulletin of experimental biology and medicine 126 (1998), S. 1106-1109 
    Details
    ISSN: 1573-8221
    Keywords: myocardial ischemia ; cardiac arrhythmias ; ventricular fibrillation ; laser irradiation ; sympathetic cardiac regulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The role of sympathetic nervous system in the antiarrhythmic effect of intra-atrial laser irradiation (λ=632.8 nm) during myocardial ischemia was studied in acute experiments on Nembutal-anesthetized cats. Laser irradiation applied after bilateral, dextral, or sinistral transection of cardiac branches of stellate ganglia increased the number of ischemic rhythm disturbances that developed after occlusion of the circumflex branch of the left coronary artery. The maximum increase in the number of arrhythmias was observed after dextral transection, the occurrence of ventricular fibrillation being 100%. Bilateral transection provoked a larger number of ischemic rhythm disturbances than the sinistral transection. It is probable that the development of the antiarrhythmic effect of laser irradiation requires sustained sympathetic activity targeted at the nonischemic regions in the myocardium that could play a stabilizing role during local ischemic damage to the heart.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02447246
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    Paper (German National Licenses)
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