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  • 1975-1979  (3)
  • 1
    Electronic Resource
    Electronic Resource
    The closest packing of equal spheres on a spherical surface (1977)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 33 (1977), S. 98-100 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A table is given of putative solutions to the Fejes problem: to find the maximum value of the smallest angular distance between any two of N points movable on the surface of a sphere. Values of N run without omission up to 27 with six sporadic cases thereafter. Some applications of this system as a model are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739477000205
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Random packing of equal spheres (reply) (1975)
    [s.l.] : Nature Publishing Group
    Nature 256 (1975), S. 522-522 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] GOTOH AND FINNEY REPLY-We are aware of the numerical closeness of 2/n and 0.6366, but until now had no good nonnumerological reason for asserting its significance. We are grateful to Gamba for pointing out the possible use of integral geometry, and will follow up the The average volume of the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/256522a0
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Triple isotope scintiphotography for differentiating between renal cysts and renal tumors (1976)
    Springer
    International urology and nephrology 8 (1976), S. 11-16 
    Details
    ISSN: 1573-2584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract As a routine diagnostic approach to patients who present hematuria or abnormal findings in X-ray films such as intravenous pyelograms, the cases are submitted to serial scintiphotography every two minutes after the intravenous administration of 250 μCi of131I-Hippuran and to renography with PHO/GAMMA Scintillation Camera (Nuclear-Chicago). When scintiphotography with131I-Hippuran reveals filling defect in the kidney region, scintiphotography with 150 μCi of203Hg-chlormerodrin and renal blood flow scintiphotography after antecubital intravenous injection of 10 mCi of99mTc are carried out. The present report concerns 8 cases of renal tumor and 5 cases of renal cyst confirmed by X-ray examinations and surgical operation. The scintiphotography revealed decreased uptake of131I-Hippuran and203Hg-chlormerodrin in both tumor and cyst sites, exhibiting round or band-shaped filling defects. On the other hand, renal blood flow scintiphotography with99mTc demonstrated the cyst as a filling defect but failed to visualize most of tumors. Accordingly, these techniques are available for differential diagnosis of the two lesions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02081986
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    Paper (German National Licenses)
    Fulltext
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