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  • 1
    Electronic Resource
    Electronic Resource
    Studies on the chemical properties of the acetylcholine receptor site of the frog neuromuscular junction (1970)
    Springer
    The journal of membrane biology 2 (1970), S. 119-126 
    Details
    ISSN: 1432-1424
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary The effect of a water-soluble carbodiimide has been used to study the nature of the presumed anionic part of the acetylcholine (ACh) receptor at the frog neuromuscular junction. The ACh sensitivity has been measured by the moving fluid electrode method and by recording end plate potentials with microelectrodes. The carbodiimide blocked ACh sensitivity without marked effect on the membrane resistance or potential difference. The conditions of reversibility of the block and the results obtained with phospholipids suggest that a carboxyl group is important in the combination of ACh with the receptor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01869855
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Turbulent newtonian flow in annuli (1961)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 7 (1961), S. 41-45 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In recent years there have been quite a few experimental studies on turbulent flow in annuli. In this paper a Prandtl mixing-length approach is applied to give a friction factor vs. Reynolds number expression for annuli [see Equation (22) and Table 1]; this expression describes tube flow and slit flow as special cases. No new adjustable constants appear in the final result other than those determined earlier for tube flow. The final expression is found to predict friction factors within the accuracy of the existing experimental data. The mixing-length friction-factor expression is thus substantially more accurate than the usual hydraulic-radius procedure and of comparable accuracy to other recent annulus friction-factor treatments.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690070112
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Tube flow of non-Newtonian polymer solutions: PART I. Laminar flow and rheological models (1964)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 10 (1964), S. 878-881 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A correlation of turbulent tube-flow friction factors for non-Newtonian polymer solutions, based upon the fluid property τ1/2; defined in Part I, has been found to represent data taken on seven solutions of Natrosol hydroxyethylcellulose in ½- and 1-in, I.D. smooth tubes, with an average accuracy of 10.8%. Also, for these seven solutions, this correlation gives somewhat more accurate predictions of the point of transition into turbulent flow than are made by the Ryan-Johnson stability theory.The correlation must be considered only provisional, however, because it does not simplify to the limiting case of extremely dilute solutions. Plausible extensions based on models of steady-flow non-Newtonian viscosity behavior, and other possible correlation schemes utilizing viscoelastic fluid properties, are briefly discussed.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690100619
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Tube flow of non-Newtonian polymer solutions: Part II. Turbulent flow (1964)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 10 (1964), S. 881-884 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A correlation of turbulent tube-flow friction factors for non-Newtonian polymer solutions, based upon the fluid property τ1/2 defined in Part I, has been found to represent data taken on seven solutions of Natrosol hydroxyethylcellulose in ½- and 1-in, I.D. smooth tubes, with an average accuracy of 10.8%. Also, for these seven solutions, this correlation gives somewhat more accurate predictions of the point of transition into turbulent flow than are made by the Ryan-Johnson stability theory.The correlation must be considered only provisional, however, because it does not simplify to the limiting case of extremely dilute solutions. Plausible extensions based on models of steady-flow non-Newtonian viscosity behavior, and other possible correlation schemes utilizing viscoelastic fluid properties, are briefly discussed.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690100620
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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