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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 23 (1982), S. 475-477 
    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
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 20 (1980), S. 0 
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Bei Flughafer wurde der Emfluß verschiedener Applikationsorte zwischen Spitze und Basis des Sprosses auf die Penetration und Translokation von 14C-Diclofop-methyl untersucht. Die Penetration liegt an der Basis der Blattspreitc am 1. Blatt um 64% und am 2. Blatt um 95% höher als an der Spitze des jeweiligen Blattes. Die Translokation von 14C-Diclofop-mcthyl in basipeitaler Richtung ist begrenzt. Daher ist die Menge an 14C-Diclofop-methyl an der Sproßbasis, dem Hauptwirkort, um so höher, je näher das Herbizid zur Sproßhasis appliziert wird. Hinsichtlich einer möglichst optimalen Verteilung von 14C-Didofop-methyl in der Pflanze erwies sich die Applikation an die Basis del Blattsprciten als am günstigsten. Dies beruht u.a. darauf daß es bei diesem Applikationsort zu einem Einlaufen der Herbizidlösung in die Blattscheidc und infolgedessen zu einem mechanischen basipetalen Vordringen innerhalb dieser in den Bereich der mcristematischen Gewehe der Sproßbasis kommt. Als Konsequenz daraus ergibt sich die Forderung nach einer möglichst gezielten Deponierung von Diclofop-methyl in den Bereich der Sproßbasis.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 71 (1984), S. 473-474 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 40 (1980), S. 249-256 
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A model representing a two- or a three-dimensional array of classical harmonic chains withnonlinear coupling between them is investigated. Physically real systems to which this model applies are discussed. The model exhibits soliton-like nonlinear modes. The influence of these nonlinear modes on the static and the dynamic correlation functions is calculated by generalizing techniques developed for strictly one-dimensional systems. In the static correlation functions these modes lead to minor quantitative changes only. In certain dynamic correlation functions, however, a central peak is found to occur due to the nonlinear modes. The total weight and the width of this peak are calculated for a real spin system.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    European archives of psychiatry and clinical neuroscience 231 (1982), S. 149-154 
    ISSN: 1433-8491
    Keywords: Visual evoked potentials ; Stimulus luminance ; Multiple sclerosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Nachdem psychophysische Experimente nahelegen, daß schon nach geringen Leuchtdichteänderungen die interokulären Latenzdifferenzen bei MS-Patienten beträchtlich zunehmen, untersuchten wir den Einfluß von Leuchtdichteänderungen auf die diagnostische Trefferrate der VEP bei der Multiplen Sklerose. Über einen Bereich von drei logarithmischen Einheiten brachten Leuchtdichteänderungen keine Zunahme der diagnostischen Ausbeute. Auch die Regressionskoeffizienten der Funktion VEP-Latenz gegen Leuchtdichte unterschieden sich bei MS-Kranken nicht von denen bei Gesunden. Da bei abnehmender Leuchtdichte die Trefferquote der VEP sogar deutlich abnimmt, muß diese Variable in der Klinik beachtet werden.
    Notes: Summary In view of the fact that with psychophysical methods monocular luminance changes may increase the detection rate of pathological interocularlatency differences in MS patients, we studied the influence of stimulus luminance on the detection rate of MS using checkerboard visual evoked potentials. Decrements of stimulus luminance covering a range of three log units were unable to increase the detection rate of VEP. Regression coefficients of the luminance-latency functions did not differ in MS patients and normals. Contrary to the hypothesis tested, the diagnostic significance of VEP decreases with decreasing stimulus intensity.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of solution chemistry 10 (1981), S. 419-430 
    ISSN: 1572-8927
    Keywords: Nuclear magnetic relaxation ; hydrogen bonding ; liquid association ; phenol ; carbon tetrachloride
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The system phenol-CCl4 was studied by measuring proton and deuteron magnetic relaxation rates and self-diffusion coefficients at 25°C. From these data intermolecular relaxation rates have been calculated. By means of an association parameter A, association of phenol molecules with respect to various parts of the molecule has been established. Closest distances of approach between protons and configurations of maximum occurrence probabilities are reported.
    Type of Medium: Electronic Resource
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