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  • Springer  (12)
  • Wiley-Blackwell  (10)
  • 1965-1969  (18)
  • 1955-1959  (4)
  • 1
    Electronic Resource
    Electronic Resource
    Regulation of host and symbiont population size inParamecium bursaria (1969)
    Springer
    Cellular and molecular life sciences 25 (1969), S. 664-666 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Es hat sich gezeigt, dass eine nahe Wechselbeziehung zwischen der Vermehrungsgeschwindigkeit der symbiotischenChloralla-Bevölkerung imParamecium bursaria und der Vermehrungsgeschwindigkeit des Wirts besteht, wenn man diese Kultur der Lichteinwirkung aussetzt. Die durchschnittliche (mittlere) Anzahl von Algenzellen pro Protozoenzelle ist in Massenkulturen von Lichtstärke und Einwirkungszeit unabhängig.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01896584
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  • 2
    Electronic Resource
    Electronic Resource
    Morphine antagonistic effect of chlordiazepoxide (Librium®) (1969)
    Springer
    Cellular and molecular life sciences 25 (1969), S. 381-381 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Die morphinantagonistische Wirkung von Chlordiazepoxid (Librium®) wurde untersucht. Die Dosis-Wirkungs-Kurve zeigt 2 ansteigende Phasen mit einer intermediären, absinkenden Phase. Verschiedene Möglichkeiten zur Erklärung dieses Phänomens werden diskutiert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01899932
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  • 3
    Electronic Resource
    Electronic Resource
    Epitaxie von Eis (I) auf anorganischen Trägerkristallen (1957)
    Springer
    Naturwissenschaften 44 (1957), S. 231-231 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00595787
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  • 4
    Electronic Resource
    Electronic Resource
    Theorie zur digitalen Berechnung des asynchronen Betriebsverhaltens von Drehfeldmaschinen mit anisotropem Läufer (1968)
    Springer
    Electrical engineering 52 (1968), S. 163-175 
    Details
    ISSN: 1432-0487
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Description / Table of Contents: Contents The most general case of a rotating-field-machine with anisotropic rotor is the synchronous machine with salient poles, damper cage and — during asynchronous starting — shortcircuited field winding. For calculating the asynchronous performance of this machine, from which only the design datas but not measurement results are known, usually certain assumptions of the damper current distribution are made. Those assumptions are dropped in this treatment. A system of voltage equations is derived regarding each damper mesh. The parameters necessary for calculation are defined with respect to the individual machine geometry. The system of equations can only be matched on a digital computer. A computer programs is given.
    Notes: Übersicht Den allgemeinsten Fall einer Drehfeldmaschine mit anisotropem Läufer stellt die Synchronmaschine mit ausgeprägten Polen, Dämpferkäfig und — während des Anlaufs — kurzgeschlossener Erregerwicklung dar. Zur Vorausberechnung des asynchronen Betriebsverhaltens dicser Maschine, von der lediglich die Entwursdaten aber noch keine Meßergebnisse bekannt sind, werden üblicherweise bestimmte Annahmen über die Dämpferstromverteilung gemacht. Davon wird in der vorliegenden Arbeit abgeschen. Es wird ein System von Spannungsgleichungen angegeben, das jede cinzelne Dämpfermasche berücksichtigt. Dabei ergeben sich die zur Berechnung erforderlichen Kennwerte aus der Ableitung mit engem Bezug auf die jeweilige Maschinengeometrie. Das Gleichungssystem kann nur auf digitalem Wege gelöst werden. Ein Rechenprogramm wird mitgeteilt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01574950
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  • 5
    Electronic Resource
    Electronic Resource
    The occurrence of nerve growth factor in teleost fishes (1968)
    Springer
    Cellular and molecular life sciences 24 (1968), S. 736-737 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Résumé Le «nerve growth factor» a été découvert dans les axes spinaux de quelques poissons lors d'un essai biologique, in vitro, provoquant la croissance de fibres nerveuses des ganglia spinaux des embryons de poulet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02138349
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  • 6
    Electronic Resource
    Electronic Resource
    The Avena geo-curvature test (1968)
    Springer
    Planta 84 (1968), S. 1-10 
    Details
    ISSN: 1432-2048
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The Avena geo-curvature test is a bioassay for auxin-type growth regulators. Etiolated oat coleoptiles are used and the test is conducted in special perspex trays under diffuse daylight. The coleoptiles, with the primary leaves intact, are arranged in grooves on the trays in 4 series of 6 coleoptiles each, and cut to a size of 10 mm. The test substance is applied on an agar strip covering only the lower halves of the apical cut surfaces of each series. After a 4-hour stay in the dark in moist Petri dishes the coleoptile cylinders are shadowgraphed on a 35-mm photographic film. The curvatures are measured from an enlarged projection (10 times natural size) of the shadowgraphs. The lowest IAA concentration which can be determined is around 30 to 60 μg/l, i.e. about 1 to 2 ng IAA. The concentration response curves follow a logarithmic course up to 1,000 μg/l. The standard error of the mean in a test series comprising 6 coleoptiles is on an average ± 7%. The simple and quick procedures make it possible for a worker to test 60 to 80 fractions a day.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00384817
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  • 7
    Electronic Resource
    Electronic Resource
    Über ein Di-imid der schwefligen Säure (1956)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 68 (1956), S. 678-678 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19560682106
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  • 8
    Electronic Resource
    Electronic Resource
    Reaktionen des Hexachlordibenzyls II (1966)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 49 (1966), S. 2490-2492 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1, 1, 2, 2-Tetrachloro-1, 2-bis-(4-chlorophenyl)-ethane (hexachlorodibenzyl) heated with 4-chlorobenzoic acid or benzoic acid undergoes pyrolytic cleavage yielding the corresponding benzoylchlorides and trans-tetrachlorostilbene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19660490811
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  • 9
    Electronic Resource
    Electronic Resource
    3,6,9,10-Tetrahalogenphenanthrene. Eine neue Cycloarylierungsreaktion von DDT-Derivaten (1968)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 51 (1968), S. 1572-1581 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A simple synthesis of tetrachlorophenanthrene starting from DDT has been realized. 1,1,1,2-tetrachloro-2,2-bis-(4-chlorophenyl)-ethane (I) and its rearranged product 1,1,2,2-tetrachloro-1,2-bis-(4-chlorophenyl)-ethane (V) and other analogs substituted by halogen in the para-position undergo a cycliarylation yielding 3,6,9,10-tetrahalogenophenanthrenes. Partial dechlorination of this tetrachlorophenanthrene yields 3,6-dichlorophenanthrene. Oxidation gives 3,6-dichloro-9,10-phenanthrenequinone, and chlorosulfonation leads to 3,6,9,10-tetrachloro-2,7-bis-(chlorosulfonyl)-phenanthrene. The mechanism of this cyclization reaction in presence of LEWIS acids is discussed and compared with the cyclization of DDT derivatives to yield fluorenones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19680510710
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  • 10
    Electronic Resource
    Electronic Resource
    5,5′-Disubstituierte Diphensäure-Derivate (1968)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 51 (1968), S. 1582-1587 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 5,5′-Dichloro-2,2′-biphenyldicarboxylic acid is readily accessible by oxidation of 3,6-dichloro-9, 10-phenanthrenequinone, which in turn has been prepared earlier starting from DDT. Various substitutions and transformations of the 5, 5′-dichloro-2, 2′-biphenyldicarboxylic acid and derivatives are reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19680510711
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