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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    International journal of thermophysics 21 (2000), S. 1373-1405 
    ISSN: 1572-9567
    Keywords: associating fluids, critical state ; crossover theory ; equation of state ; enthalpies ; heat capacities ; n-alkanols ; thermodynamic properties ; speed of sound ; vapor–liquid equilibrium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In this work we have developed a new equation of state (EOS) for propan-1-ol on the basis of the crossover modification (CR) of the statistical-associating-fluid-theory (SAFT) EOS recently developed and applied to n-alkanes. The CR SAFT EOS reproduces the nonanalytical scaling laws in the asymptotic critical region and reduces to the analytical-classical SAFT EOS far away from the critical point. Unlike the previous crossover EOS, the new CR SAFT EOS is based on the parametric sine model for the universal crossover function and is able to represent analytically connected van der Waals loops in the metastable fluid region. The CR SAFT EOS contains 10 system-dependent parameters and allows an accurate representation of the thermodynamic properties of propan-1-ol over a wide range thermodynamic states including the asymptotic singular behavior in the nearest vicinity of the critical point. The EOS was tested against experimental isochoric and isobaric specific heats, speed of sound, PVT, and VLE data in and beyond the critical region. In the one-phase region, the CR SAFT equation represents the experimental values of pressure with an average absolute deviation (AAD) of less than 1% in the critical and supercritical regions and the liquid densities with an AAD of about 1%. A corresponding states principle is used for the extension of the new CR SAFT EOS for propan-1-ol to higher n-alkanols.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of experimental biology and medicine 129 (2000), S. 420-422 
    ISSN: 1573-8221
    Keywords: akatinol ; central spinal pain syndrome ; penicillin ; spinal dorsal horns ; evoked potentials
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract On the model of central spinal pain syndrome in rats induced by application of penicillin to the dorsal surface of the lumbar spinal cord, akatinol injected intraperitoneally at the peak of syndrome or applied locally simultaneously with penicillin produced a dose-dependent analgesic effect. Intraperitoneal injection of akatinol at the peak of pain syndrome inhibited neuronal activity in spinal dorsal horn: the amplitude of total evoked neuronal response significantly decreased and the duration of action potentials returned to normal. It is concluded that activation of NDMA receptors plays a significant role in the development of central spinal pain syndrome, in particular spontaneous pain attacks, hyperalgesia, and tactile allodynia. Akatinol can be an essential component of the complex pathogenetic therapy of central pains.
    Type of Medium: Electronic Resource
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