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  • 1
    Electronic Resource
    Electronic Resource
    Solid-phase synthesis of triple-helical collagen-model peptides (1996)
    Springer
    International journal of peptide research and therapeutics 3 (1996), S. 3-16 
    Details
    ISSN: 1573-3904
    Keywords: Cell adhesion ; Collagen ; Peptide amphiphiles ; Triple-helical peptides
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The triple-helical conformation of collagen has been proposed to be important for mediation of cellular activities, such as adhesion and activation, extracellular matrix assembly, and enzyme function. We have developed synthetic protocols that allow for the study of biological activities of specific collagen sequences in triple-helical conformation. These methods primarily involve solid-phase assembly and covalent linkage of three peptide chains. The resultant triple-helical peptides have sufficient thermal stabilities to permit structural and biological characterization under physiological conditions. The present article critically reviews the various approaches for constructing synthetic triple-helices.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00131080
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    Paper (German National Licenses)
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  • 2
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    Solar microwave millisecond spike at 2.84 GHz (1986)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: Using the high time resolution of 1 ms, the data of solar microwave millisecond spike (MMS) event was recorded more than two hundred times at the frequency of 2.84 GHz at Beijing (Peking) Observatory since May 1981. A preliminary analysis was made. It can be seen from the data that the MMS-events have a variety of the fast activities such as the dispersed and isolated spikes, the clusters of the crowded spikes, the weak spikes superimposed on the noise background, and the phenomena of absorption. The marked differences from that observed with lower time resolution are presented. Using the data, a valuable statistical analysis was made. There are close correlations between MMS-events and hard X-ray bursts, and fast drifting bursts. The MMS events are highly dependent on the type of active regions and the magnetic field configuration. It seems to be crucial to find out the accurate positions on the active region where the MMS-events happen and to make co-operative observations at different bands during the special period when specific active regions appear on the solar disk.
    Keywords: SOLAR PHYSICS
    Type: NASA. Goddard Space Flight Center Rapid Fluctuations in Solar Flares; p 237-247
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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