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  • 1
    Electronic Resource
    Electronic Resource
    Extrapineal melatonin and its role in the neuroendocrine regulation of homeostasis (1999)
    Springer
    Bulletin of experimental biology and medicine 127 (1999), S. 329-334 
    Details
    ISSN: 1573-8221
    Keywords: melatonin ; extrapineal synthesis ; diffuse neuroendocrine system ; tumor growth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The hormone of melatonin is the main regulator of biological rhythms. It was first found in the pineal gland in 1958. Melatonin is involved in the regulation of many vital physiological processes: maturation and development of genitalias, metabolism of pigments and free radicals, immune response, mood and sleep, and cell proliferation and differentiation. The pineal gland is not the only organ synthesizing melatonin. Extrapineal melatonin is widely dis-tributed in humans and animals. Melatonin-producing cells are found in the gastrointestinal and respiratory tracts, pancreas, adrenal and thyroid glands, thymus, cerebellum, urogenital system, placenta, and other organs. Melatonin is intensely synthesized in non-endocrine cells: mast cells, natural killers, eosinophilic leukocytes, platelets, and endotheliocytes. Such a wide distribution of melatonin reflects its key role as an intercellular neuroendocrine regulator and coordinator of many complex and interrelated biological processes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02433372
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Regulating Effect of Epithalone on Gastric Endocrine Cells in Pinealectomized Rats (2000)
    Springer
    Bulletin of experimental biology and medicine 130 (2000), S. 1169-1171 
    Details
    ISSN: 1573-8221
    Keywords: pinealectomy ; stomach ; endocrine cells ; epithalone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Endocrine cells in the stomach of pinealectomized rats after injection of epithalone (pineal gland peptide) were studied by immunohistochemical tests, morphometry, and image analysis microscopic images. A functional relationship was found between the pineal gland and stomach, which is regulated by peptides produced by the pineal gland.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1017579917837
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Polyclonal antimetallothionein antibodies: Isolation, specificity, and immunospecific staining on histological specimens (1998)
    Springer
    Bulletin of experimental biology and medicine 125 (1998), S. 633-636 
    Details
    ISSN: 1573-8221
    Keywords: metallothioneins ; polycloncal antibodies ; specificity ; immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Highly specific polyclonal rabbit antimetallothionein antibodies are isolated and characterized. The possibility of using these antibodies in immunohistochenical assay was verified on normal and tumor mammary tissues, the common metallothionein-positive models.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02445261
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Autoradiographic and immunohistochemical analysis of3H-melatonin distribution in endocrine and nonendocrine organs (1990)
    Springer
    Bulletin of experimental biology and medicine 110 (1990), S. 1443-1447 
    Details
    ISSN: 1573-8221
    Keywords: 3H-melatonin ; autoradiography ; immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00842314
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Dynamics of catalytic oxidation of CO on Pt with account for exodiffusional retardation (1994)
    Springer
    Combustion, explosion and shock waves 29 (1994), S. 719-723 
    Details
    ISSN: 1573-8345
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract We study for the first time the process of dynamic oxidation of CO on a spherical Pt catalyzer with account for the influence of exodiffusion. In contrast to the case when exodiffusional retardation is neglected and there exists only a single basic form of the catalyzer phase plane, in the present work (thanks to account for the influence of exodiffusion), we find four additional regimes of catalyzer operation. These additional regimes make it possible to explain the discontinuous nature of the dependence of the steady-state reaction rate on the mixture pressure and the reagent concentrations. It is established that the time dependence of the reaction rate upon catalyzer transition to the stationary state may be nonmonotonic and influenced by the initial state of the catalyzer and the dimensionless governing parameters. It is shown that (depending on the values of the external governing parameters) there may exist six, five, four, and two stationary states, which are singular points of the “saddle” or “nodal” type in the phase plane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00786855
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Steady and unsteady co oxidation on platinum with allowance for external diffusion retardation (1996)
    Springer
    Combustion, explosion and shock waves 32 (1996), S. 641-648 
    Details
    ISSN: 1573-8345
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A mathematical model for catalytic oxidation of CO on a spherical platinum catalyst with allowance for the influence of gas diffusion is developed and studied. The model explains the origin of the effects of bifurcation and oscillation of a steady reaction rate. The model is based on the four-stage catalytic Elley-Ridley mechanism. In contrast to the case where gas diffusion retardation is ignored and only one basic form of catalyst phase plane exists, owing to the consideration of the effect of gas diffusion, we found two additional regimes of catalyst operation. These additional regimes make it possible to explain the origin of the effects of bifurcation and oscillation of the steady reaction rate by which the reaction rate for a steady-state surface is meant. When the surface concentrations of adsorbing reagents or free catalytic sites vary in the course of the reaction, the regime of catalyst operation is called unsteady. The reaction rate when the catalyst reaches a steady state is determined for all possible regimes of catalyst operation. Based on analysis of the results obtained, we give some practical recommendations on an increase in the reaction rate. The hysteresis of the reaction rate is explained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02111565
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    Paper (German National Licenses)
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