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  • 1
    Electronic Resource
    Electronic Resource
    Synergism of atrial pressure and adrenergic stimulation for ANF release in the rat
    Amsterdam : Elsevier
    Regulatory Peptides 34 (1991), S. 55-60 
    Details
    ISSN: 0167-0115
    Keywords: Atrial natriuretic factor (ANF) ; Atrial pressure ; Phenylephrine
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0167-0115(91)90224-5
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Atrial natriuretic factor in the impulse-conduction system of rat cardiac ventricles (1989)
    Springer
    Cell & tissue research 256 (1989), S. 309-325 
    Details
    ISSN: 1432-0878
    Keywords: Atrial natriuretic factor (ANF) ; Ventricular conduction system ; Rat (Sprague-Dawley)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A complex network of atrial natriuretic factor-producing cells has been delineated by biochemical and morphological techniques in the rat ventricular myocardium. The chordae tendineae spuriae (CTS; false tendons) contain ANF mRNA and the ANF propeptide (Asn 1-Tyr 126) as assessed by Northern blot analysis, high-pressure liquid chromatography and immunohisto- and -cytochemistry, using three different affinity-purified antibodies: monoclonal and polyclonal antibodies against C-terminal ANF (Arg 101-Tyr 126) and polyclonal antibodies against N-terminal ANF (Asp 11-Ala 37). Two types of cells harboring ANF-containing secretory granules constitute the CTS: the majority (Purkinje type I) have ultrastructural similarities with both atrial and classical Purkinje fibers. Purkinje type-II fibers resemble working ventricular cardiocytes. Both cell types harbor a large paranuclear Golgi complex. The subendocardial Purkinje network is also made up of these two cell types. In this location, Purkinje type-I fibers form cable-like structures while Purkinje type-II fibers are either located beneath the former or abut directly on the endocardium. The latter are not separated from adjacent working ventricular cardiocytes by connective tissue septa. Coronary arteries and arterioles, as in birds, are surrounded by a cushion of Purkinje type-II fibers which blend with the surrounding myocardium. These results indicate that, in the rat, the entire intraventricular conduction system is constituted of endocrine cells producing ANF.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00218888
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    A thermodynamic analysis on the coincidence of extrema conditions in the sorption equilibrium for ternary polymer systems (1993)
    Springer
    Colloid & polymer science 271 (1993), S. 646-651 
    Details
    ISSN: 1435-1536
    Keywords: Ternary polymer systems ; thermodynamic analysis ; cosolvency ; cononsolvency ; sorption equilibrium ; coincidence of extrema conditions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Flory-Huggins theory of polymer solutions has been used to express the condition of extrema values in the total sorption, as well as the inversion point in the preferential adsorption parameters for termary polymer systems. Two approaches have been followed, the first considers the binary and ternary interaction parameters independent of polymer concentration and solvent composition. In the second one, this dependence has been introduced. Our attention is focused on the volume fraction of solvent mixture dependence of the above parameters, in order to confirm or not the coincidence between the extrema values and the inversion point. Several cosolvent and cononsolvent ternary polymer systems, have been used to test the validity of the equations obtained. Also, it has been verified, from an experimental point of view, that in cosolvent ternary polymer systems there is coincidence in both compositions while in cononsolvent ternary polymer systems, such coincidence does not appear.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00652826
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  • 4
    Electronic Resource
    Electronic Resource
    Prediction of maxima and minima in the curve of total sorption parameter in ternary polymer systems. Influence of ternary interaction parameter (1993)
    Springer
    Colloid & polymer science 271 (1993), S. 372-379 
    Details
    ISSN: 1435-1536
    Keywords: Ternary polymer systems ; extrema thermodynamic behavior ; total sorption parameter ; Flory-Huggins theory
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Flory-Huggins theory modified by Pouchly has been applied to predict maxima and minima in the curve of total sorption in ternary polymer systems formed by a polymer and two liquids. In this work, different diagrams based on experimental magnitudes easily obtained such as the difference in affinities of liquids, solvents and non solvents, and the solvent molar volume ratio. Total sorption parameter has been considered to be the decisive magnitude to define extrema conditions in both cosolvent and cononsolvent ternary polymer systems. The theoretical prediction is not altered by the inclusion of ternary interactions. Different examples of ternary systems dealing with vinyl polymers and polydimethyl siloxane have been used to test the above formalism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00657418
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