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  • hydrochloric acid  (2)
  • ACOUSTICS  (1)
  • amezinium  (1)
  • 5'-O-demethyl-8-O-methyl-dioncophylline A
  • entropy
  • 1990-1994  (2)
  • 1980-1984  (2)
Collection
Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Conductivity of electrolytes and their mixtures: The aqueous HCl-MgCl2 system at low concentrations (1992)
    Springer
    Journal of solution chemistry 21 (1992), S. 383-396 
    Details
    ISSN: 1572-8927
    Keywords: Electrolytic conductance ; hydrochloric acid ; ionic mobility ; magnesium chloride ; and mixture effect
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The Onsager-Fuoss-Chen theory of conductance for mixtures has been explored and compared with experimental results for the system HCl−MgCl2−H2O from 5×10−5 to 0.02 mol-kg−1 of water. In the theory, the higher order term O(ka) which involves the ion size parameter has been replaced by a linear term with an empirical constant. The theory including the additional linear term agrees well with the experimental results. The mixture effect on the equivalent conductance is small, but on the individual ionic mobilities is substantial.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00647861
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Investigation of the interaction of HCl and three amino acids, HEPES, MOPSO and glycine, by EMF measurements (1992)
    Springer
    Journal of solution chemistry 21 (1992), S. 311-321 
    Details
    ISSN: 1572-8927
    Keywords: Activity coefficient ; amino acid ; EMF ; first dissociation constant ; HEPES ; glycine ; MOPSO ; ionic interaction ; hydrochloric acid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Ionic interaction in the three systems Hcl-HEPES (N-2-hydroxyethylpiperazine-N′-2-ethanesulfonic acid), HCl-MOPSO (3-(N-Morpholino)-2-hydroxypropanesulfonic acid), and HCl-glycine have been studied in terms of their mutual influence on the respective activity coefficients of each component. Activity coefficients for each component of the three systems are calculated from emf measurements of solutions containing HCl and the amino acid in a H2/solution/AgCl,Ag cell at 25°C. The first dissociation constant of HEPES at 25°C has also been determined using emf and pH titration measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00647854
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Comparison of impedance cardiography and echocardiography for measurement of stroke volume (1982)
    Springer
    European journal of clinical pharmacology 23 (1982), S. 475-477 
    Details
    ISSN: 1432-1041
    Keywords: stroke volume measurement ; impedance cardiography ; amezinium ; echocardiography ; comparative measurement ; tilting
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The relationship between stroke volume (SV) measured simultaneously by impedance cardiography (SV1) and echocardiography (SVE) has been analyzed. Change in stroke volume in 6 healthy volunteers was induced by passive head-up tilting (80°) and by oral administration of the sympathomimetic drug amezinium. A correlation ofr=0.83 (p j 0.01) was found between SVI and SVE calculated by the equation: SVE=16.0+(0.528×SVI). Though stroke volume is overestimated by impedance cardiography, the method may be useful for the clinical pharmacologist interested in a simple non-invasive tool to estimate stroke volume and change in it.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00637491
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    Paper (German National Licenses)
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  • 4
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    On eigensolutions for discontinuous liners in a duct containing uniform mean flow (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Sound attenuation in a rectangular acoustically lined duct containing uniform mean flow is analytically investigated using the generalized Wiener-Hopf technique. Uniqueness of the solution is enforced for lined sections of the finite axial extent by imposing edge conditions at the liner interface. Possible edge conditions are considered, including the Kutta condition, and the causal solution corresponding to edge conditions is considered the best choice. Solution methods such as the mode matching and singularity methods imply differing edge conditions, and results show that power attenuation is insensitive to the imposed edge conditions, although significant differences are observed for the reflection coefficient. The amplitude of the exponentially increasing instability mode in the lined section must be set to zero as a first approximation to the nonlinear situation, and results indicate that measurements of the reflection factor can be used to make a more definite decision about physically appropriate edge conditions.
    Keywords: ACOUSTICS
    Type: AIAA PAPER 81-2017 , Aeroacoustics Conference; Oct 05, 1981 - Oct 07, 1981; Palo Alto, CA
    Format: text
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