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  • Air-hydrate  (1)
  • adrenalectomy  (1)
  • Chemistry
  • Springer  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Further evidence for the dissociation of digoxin-like immunoreactivity from Na+, K+-ATPase inhibitory activity (1990)
    Springer
    Cellular and molecular life sciences 46 (1990), S. 1041-1043 
    Details
    ISSN: 1420-9071
    Keywords: Endogenous digitalis-like factor ; digoxin-like immunoreactivity ; Na+, K+-ATPase inhibitor ; adrenalectomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The effects of adrenalectomy or nephrectomy, carried out one hour previously, on the levels of endogenous digitalis-like factors were determined in rat plasma. Factors were assayed by digoxin-like immunoreactivity and direct Na+, K+-ATPase inhibitory activity. Digoxin-like immunoreactivity significantly decreased one hour after bilateral ablation of adrenals, while Na+, K+-ATPase inhibitory activity remained unaltered. There were no changes in either activity one hour after bilateral nephrectomy. These results suggest that digoxin-like immunoreactivity may be derived from the adrenal gland or under adrenal control and the major substances detected by digoxin-like immunoreactivity and direct Na+, K+-ATPase inhibitory activity may be different.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01940667
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  • 2
    Electronic Resource
    Electronic Resource
    The crystallographic structure of the natural air-hydrate in Greenland dye-3 deep ice core (1990)
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 8 (1990), S. 17-24 
    Details
    ISSN: 1573-1111
    Keywords: Air-hydrate ; clathrate ; ice core ; guest molecule
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract We have carried out X-ray diffraction studies on single crystals of natural air-hydrate in deep ice cores recovered at Dye-3 Greenland. Integrated intensities for 470 diffracting planes were measured by an automated four-circle diffractometer. The space group determined is cubicFd3m and the lattice constant is 17.21(3) Å. These results indicate that the crystallographic structure is the Stackelberg's structure II, in contrast to the previously anticipated structure. This finding agrees with the recent results on the synthetic air-hydrate by Davidsonet al. It was also found by difference Fourier synthesis for guest molecules that electron density in a 16-hedral cage has multiple maxima displaced from the center of the cage while that in the 12-hedron was approximately spherical.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01131284
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    Paper (German National Licenses)
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