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  • Springer  (105)
  • American Meteorological Society (AMS)
  • 1985-1989  (65)
  • 1975-1979  (33)
  • 1955-1959  (7)
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  • 1
    ISSN: 1439-0361
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Summary A spell of frost of 30 days in February/March 1986 caused a high mortality (5–6%) among wintering Oystercatchers on Texel, NL. Anatomical deformations were found in 67% of the frost victims, especially on bill and legs. 60,7% of the frost victims were younger than 1 year and only 8,3% were adults. The mean weight of the 86 victims was about 36% less than the mean normal winter-weights.
    Notes: Zusammenfassung Nach einer 30tägigen Frostperiode im Februar/März 1986 konnten auf der niederländischen Wattenmeerinsel Texel 86 tote Austernfischer untersucht werden. 67% aller Totfunde wiesen Deformationen an Schnäbeln und Beinen auf. 60,7% waren Vögel im ersten Lebensjahr. Der Anteil adulter betrug 8,3%. Die Totfunde wiesen ein Untergewicht von 36% auf. Insgesamt dürften 5–6% des Winterbestandes auf Texel dem Frost zum Opfer gefallen sein.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 256 (1978), S. 161-166 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Summary The system Na4(VO3)4-NaCl-H20 is taken as an example for ultracentrifugal measurements at sedimentation equilibrium to determine the molar mass and the valency of a polymer electrolyte in a ternary system when interactions exist between the polymer and the supporting electrolyte. The experimental apparent molar mass is obtained by extrapolation to zero value of concentration of both the polymeric and supporting electrolyte. It is possible to correlate the quantity (alnyPX z /amBX)mPXz at the point m PX z = 0 mole kg-1 with the apparent valency zapp of the polymeric anion.z app is related to the stoichiometric valency by the equationz app = z =a.Z. Thus the dissociation constant can be calculated for complete dissociation of the polymer electrolyte. The dependence of zapp and (aln y PX z /a m BX ) m PX z = 0 on concentration of the supporting electrolyte called for in the correlation is verified experimentally.
    Notes: Zusammenfassung Am Beispiel des Systems Na4(VO3)4-NaCl-H2O wird untersucht, in welcher Weise Ultrazentrifugenmessungen im Sedimentationsgleichgewicht durchgeführt werden müssen, um die molare Masse und die Ladungszahl von Polymerelektrolyten in ternären Systemen unter der Bedingung von nicht vernachlässigbaren Wechselwirkungen zwischen Polymerund Fremdelektrolyt zu bestimmen. Es erweist sich, daß die experimentellen scheinbaren molaren Massen nicht nur auf die Polymerkonzentration Null extrapoliert werden müssen, sondern auch auf die Fremdelektrolytkonzentration Null. Es gelingt, die Ableitung (alnyPXz/amBx)mPXz an der StellemPXz = 0 mol kg-1 mit einer scheinbaren mittleren Ladungszahlz app des Polymeranions zu korrelieren. Zwischen dieser und der stöchiometrischen Ladungszahlz des Polymeranions besteht die Beziehungz app = Z =az, so daß die Dissoziationskonstante des Polymerelektrolyten für die summarische Dissoziation berechnet werden kann. Die aus dieser Korrelation folgenden Abhängigkeiten der scheinbaren mittleren Ladungszahlen und der Ableitung (alnypx z /amBX)Mpx z = 0 von der Konzentration des Fremdelektrolyten werden experimentell bestätigt.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 291 (1979), S. 353-365 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The photodisintegration of the stable Lithium isotopes has been investigated by spectroscopy of the emitted charged particles using the Giessen bremsstrahlung facility. Protons, deuterons, tritons,3He and alpha particles were detected and identified up to 20MeV particle energy. Angular distributions were measured using γ-ray energies up toE γ =50 MeV. They are compared with theoretical predictions and with other experiments. A remarkable low (γ, t)-cross section was found for both isotopes in disagreement to previous measurements using virtual photons. Coincidence measurements between the emitted particles were performed in order to study the manybody-breakups of7Li.
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 38 (1988), S. 1-1 
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 44 (1988), S. 40-42 
    ISSN: 1420-9071
    Keywords: TRH ; TRH analogues ; thermogenesis ; brown adipose tissue
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Acute or chronic injection of RX 77368 (a TRH analogue; 1 mg/kg s.c.) stimulated oxygen consumption (VO2) and brown adipose tissue activity in the rat, and decreased weight gain Other TRH analogues (CG 3509, RGH 2202) and TRH itself also stimulated VO2. These thermogenic actions are probably mediated centrally by stimulation of sympathetic outflow to brown fat.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 33 (1977), S. 1066-1068 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Vinblastine did not affect the basal secretion of enzymes from the rat pancreas, but it potentiates the secretory response to dibutyryl cyclic AMP. This potentiation is confirmed by the observation of numerous pictures of exocytosis at the apical part of the acinar cell. Dibutyryl cyclic GMP by itself, or associated with vinblastine, failed to modify the spontaneous release of enzymes or the secretion induced by dibutyryl cyclic AMP.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 32 (1976), S. 1276-1277 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The C and G chromosome banding patterns and the AgAS positive sites (NOR regions) of cultured lung cells of the Eastern mole (Scalopus aquaticus) are presented. A distinctive secondary constriction is found on a pair of autosomes instead of on the X-chromosome as previously believed. The presence of a heterochromatic heteromorphism is noted and a large amount of constitutive heterochromatin is present in the karyotype.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Archiv der Mathematik 47 (1986), S. 408-409 
    ISSN: 1420-8938
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal for general philosophy of science 16 (1985), S. 304-314 
    ISSN: 1572-8587
    Source: Springer Online Journal Archives 1860-2000
    Topics: Philosophy , Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Summary The method of citation analysis has been elaborated by E. Garfield for the purpose of documentation of scientific literature. The data accumulated in “Citation Indices” can also be used as an empirical basis for certain investigations in the field of science of science. Techniques of citation analysis (e.g. the calculation of citation rates or the co-citation-analysis) permit measurements of information activities of scientists. We refuse overdrawn interpretations of the results of citation analyses, for instance the indication of “scientific quality” or of “thematico-technical relations between ideas, problems etc.”.
    Type of Medium: Electronic Resource
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  • 10
    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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