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  • Springer  (4)
  • 1980-1984  (4)
  • 1945-1949
  • 1
    Electronic Resource
    Electronic Resource
    Effects of a bone resorptive factor from human cancer ascites fluid on rat bone cell calcium and cyclic AMP (1980)
    Springer
    Calcified tissue international 30 (1980), S. 191-197 
    Details
    ISSN: 1432-0827
    Keywords: Bone cells ; Cyclic AMP ; Calcium ; Ascites fluid resorptive protein
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary The effects of a bone resorptive protein isolated from human cancer ascites fluid on bone cell calcium and cyclic AMP were studied with fetal rat cells. The osteoclast-activating factor increased bone cell calcium uptake at 37°C and 4°C with no direct effects on calcium efflux. Concentrations of the resorptive factor that increased in vitro bone resorption and cell calcium uptake had no effect on cyclic AMP. The effects of the protein on calcium uptake were not specific for bone cells, and large increases were also observed in isolated fetal rat skin cells. These studies suggest that increases in the permeability of the cell membrane to calcium are involved in the mechanism of action of the ascites fluid resorptive protein.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02408627
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  • 2
    Electronic Resource
    Electronic Resource
    Competition between strong and de-coupling in odd-odd mass nuclei (1981)
    Springer
    The European physical journal 299 (1981), S. 55-62 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Competition of strong and decoupling is studied systematically for odd-odd mass nuclei as a function of the position of the Fermi surfacesε F (π) andε F (υ) and the deformationsβ andγ. As an example we use80Br. For a prolate deformation the odd proton likes to decouple while the odd neutron couples strongly. This favours a ground state angular momentum of 5 to 6. The strong coupling is described by the admixture of ad 5/2 nucleon. Only for the neutrons the admixture is so appreciably that it affects the spectrum and improves the agreement between theory and experiment for80Br.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01415742
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  • 3
    Electronic Resource
    Electronic Resource
    An angular momentum projected quasiparticle approach to rotational states in nuclei (1981)
    Springer
    The European physical journal 300 (1981), S. 77-84 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An attempt is made to take into account single particle degrees of freedom in angular momentum projected HFB-calculations via the explicit inclusion of two quasiparticle states. For this purpose a formalism is used which, though being rather general, nevertheless is rather suitable for numerical applications even in realistic model spaces. As a first test the method is applied in thei 13/2-shell, where exact shell model solutions are available. Though using only a rather truncated quasiparticle space we obtain almost perfect agreement with these exact solutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01412617
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  • 4
    Electronic Resource
    Electronic Resource
    Chaetogaster limnaei K.E. v. Baer. Ein Problem in der Labor-Wasserschneckenzucht für die Trematodenforschung (1981)
    Springer
    Parasitology research 65 (1981), S. 261-270 
    Details
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Ein aufPlanorbis planorbis gefundener Oligochaet wurde alsChaetogaster limnaei K.E. v. Baer identifiziert. Es erwies sich, daß Schnecke und Oligochaet in einer gewissen Symbiose leben. Bei Infektionsversuchen verschlangChaetogaster Pansenegelmirazidien und schützte damit den Wirt wirkungsvoll vor einer massiven Invasion, weiterhin fraß er schwärmende Zerkarien und beeinträchtigte so den Lebenszyklus des Trematoden.Chaetogaster limnaei läßt sich von Versuchschnecken entfernen, wenn diese 8 h lang bei +32° C–34° C Wassertemperatur gehalten werden.
    Notes: Summary An oligochaet found onPlanorbis planorbis was identified asChaetogaster limnaei K.E. v. Baer. Snail and oligochaet apparently lived in a relationship of symbiosis.Chaetogaster ingested miracidia of the stomach flukeParamphistomum cervi, thus protecting the host effectively from massive invasion; further moreChaetogaster influenced the life cycle of the trematode by ingesting swarming cercariae.Chaetogaster limnaei can easily be removed by keeping the snails for 8 h at +32–34° C water temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00926719
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