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  • 1
    Electronic Resource
    Electronic Resource
    A NORMATIVE THEORY OF REPRESENTATIVE DEMOCRACY (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 219 (1973), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1973.tb41384.x
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  • 2
    Electronic Resource
    Electronic Resource
    The influence of the hypophysis upon the calorigenic action of catecholamines (1972)
    Springer
    Cellular and molecular life sciences 28 (1972), S. 476-477 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Durch Hypophysektomie wird die kalorigene Wirkung von Noradrenalin bei 23–28 sowie 63 Tage alten Ratten fast vollständig aufgehoben, während die Wirkung von 2,4-Dinitrophenol kaum beeinflusst wird.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02008351
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  • 3
    Electronic Resource
    Electronic Resource
    Heavy Lysozymuria after X-Irradiation of the Spleen in Human Chronic Myelocytic Leukaemia (1972)
    [s.l.] : Nature Publishing Group
    Nature 235 (1972), S. 274-275 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Twenty-four hour samples of urine were collected and the lysozyme activity was estimated by a slight modification of the method of Osserman and Lawlor1. The normal range of activity was from 0?2 µg ml?1. The urine of patients suffering from chronic lymphocytic and acute lymphoblastic ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/235274b0
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  • 4
    Electronic Resource
    Electronic Resource
    Chemotaxis in brown algae (1972)
    Springer
    Naturwissenschaften 59 (1972), S. 166-166 
    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/BF00637358
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  • 5
    Electronic Resource
    Electronic Resource
    On glivenko-cantelli convergence (1970)
    Springer
    Probability theory and related fields 16 (1970), S. 195-210 
    Details
    ISSN: 1432-2064
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00534596
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  • 6
    Electronic Resource
    Electronic Resource
    A study of branching ratios of cross sections in the charge symmetric reactions10B(d,p)11B and10B(d, n)11C (1973)
    Springer
    The European physical journal 264 (1973), S. 201-210 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It is shown that the investigation of cross section branching ratios of (d,p) and (d, n) reactions which lead to isobaric analogue states in the residual nuclei may provide some information about reaction mechanism in the low energy region. For the (d, p) and (d, n) reactions on10B the calculation of integrated cross sections by use of DWBA shows that the branching ratio is not so sensitive to the choice of the optical model parameters than angular distribution and absolute cross section. Under the assumption of statistical compound nucleus model the calculated values of branching ratios deviates from those predicted by DWBA, such that the reaction modes can be distinguished. The experimental result is compared with the calculations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01396276
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  • 7
    Electronic Resource
    Electronic Resource
    Observation of argon lines at normal pressure in the vacuum ultraviolet (1972)
    Springer
    Space science reviews 13 (1972), S. 563-564 
    Details
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00213484
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  • 8
    Electronic Resource
    Electronic Resource
    Zur Korrosion verzinkter Eisenwerkstoffe durch natürliche Brauchwässer (1973)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 24 (1973), S. 282-286 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Corrosion of galvanized ferrous materials by natural watersLaboratory and field test with galvanized irons do not reveal clear interrelations between water quality and corrosion. Likewise it is not possible on the basis of potential measurements to make any statement with respect to the formation of protective layers. It is for this reason that some doubt may be expressed as to the applicability of the test method according to DIN 50 930, the more so as the formation of ZnCO3 could be shown to take place in some few cases only.
    Notes: Laboratoriums- und Feldversuche mit verzinktem Eisen zeigen keine eindeutigen Zusammenhänge zwischen Wasserbeschaffenheit und Korrosion. Ebenso ist es nicht möglich, aufgrund von Potentialmessungen Aussagen über die Schutzschichtbildung zu machen. Aus diesem Grunde kann auch die Anwendbarkeit der Untersuchungsmethode nach DIN 50 930 in Zweifel gezogen werden, zumal nur in Einzelfällen die Bildung von ZrCO3 eindeutig nachgewiesen werden konnte.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19730240405
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  • 9
    Electronic Resource
    Electronic Resource
    Zur Bildung von gewinkelten Leiterpolymeren in Polyacrylnitril-FasernHerrn Professor Dr. FRANZ PATAT zum 65. Geburtstag gewidmet (1971)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 144 (1971), S. 117-133 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The process of cyclization of copolymer-free polyacrylonitrile (PAN) at thermal treatment between 200 and 300°C in air is studied by measuring the elongation-shrinkage behaviour of polymer fibres under tensile stress. It was found that solely the shrinkage which occurs above 235°C is caused chemically, whilst the fibres are stretched by plastic deformation up to 235°C. The shrinkage above 235°C is explained as a consequence of cyclization reactions of PAN leading to polymers with angled partial ladder structure. The maximum shrinkage of about 25%, obtained experimentally without tensile stress, is in agreement with conclusions drawn on molecular models. These models are based on differing ratios of inter- and intramolecular addition reactions between the nitrile groups of PAN. The remaining elongation attainable after thermal treatment up to 300°C is determined by the reaction conditions until cyclization sets in, and was increased up to 40% using endless copolymer-free PAN fibres.
    Notes: Der Verlauf der Cyclisierung von copolymerfreiem Polyacrylnitril (PAN) bei thermischer Behandlung zwischen 200 und 300°C an Luft wird durch Messung des Dehnungs-Schrumpfungs-Verhaltens von Polymerfäden unter Zugbeanspruchung studiert. Es wurde gefunden, daß nur die oberhalb 235°C eintretende Schrumpfung chemisch bedingt ist, während die Fasern bis 235°C durch plastische Verformung gedehnt werden. Die Schrumpfung oberhalb 235°C wird als eine Folge der Cyclisierungsreaktionen des PAN zu Polymeren mit gewinkelter partieller Leiterstruktur erklärt. Die experimentell ohne Zugbeanspruchung gefundene maximale Schrumpfung von ca. 25% steht in übereinstimmung mit überlegungen an Molekülmodellen, bei denen unterschiedliche Verhältnisse von inter- und intramolekularen Additionsreaktionen zwischen den Nitrilgruppen zugrunde gelegt werden. Die erreichbare bleibende Dehnung nach der thermischen Behandlung bis oberhalb 300°C wird von den Reaktionsbedingungen bis zur einsetzenden Cyclisierung bestimmt und konnte an endlosen copolymerfreien PAN-Fäden bis zu 40% gesteigert werden.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1971.021440110
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  • 10
    Electronic Resource
    Electronic Resource
    Über ternäre Thalliumchalkogenide mit Thalliumselenidstruktur (1973)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 398 (1973), S. 207-220 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Ternary Thallium Chalcogenides with Thallium Selenide Structure.By means of single crystal investigations, it has been confirmed that the compounds TlGaTe2, TIInSe2, and TIInTe2 crystallize in the TISe type (B37). As an univalent cation thallium is surrounded by eight chalcogen atoms. Gallium and indium are trivalent with tetrahedral coordination and covalent bonds. The interatomic distances as well as coordination and bonding resulting from them are discussed.
    Notes: Mit Hilfe von röntgenographischen Einkristalluntersuchungen wurde bestätigt, daß die Verbindungen TlGaTe2, TlInSe2 und TlInTe2 im TISe-Typ (B37) kristallisieren. Thallium ist darin als 1wertiges Kation von acht Chalkogenatomen umgeben, Gallium und Indium liegen 3wertig mit tetraedrischer Koordination und kovalenter Bindung vor. Dio interatomaren Abstände sowie die sich daraus ergebenden Koordinations- und Bindungsverhältnisse werden diskutiert.
    Additional Material: 8 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19733980215
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