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  • 1
    Electronic Resource
    Electronic Resource
    Soluble P-selectin and the postoperative course following cardiopulmonary bypass in children (2001)
    Oxford UK : Blackwell Science Ltd
    Pediatric anesthesia 11 (2001), S. 0 
    Details
    ISSN: 1460-9592
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background: Cytokine-inducible leucocyte-endothelial adhesion molecules were shown to affect the postoperative inflammatory response following cardiopulmonary bypass (CPB). Soluble P-selectin (sP-selectin) is one of these molecules. We investigated the correlation between plasma sP-selectin levels and the intra- and postoperative course in children undergoing CPB. Methods: Serial blood samples of 13 patients were collected preoperatively upon initiation of CPB and seven times postoperatively. Plasma was recovered immediately and frozen at – 70°C until use. Circulating soluble selectin molecules were measured with a sandwich enzyme-linked immunoabsorbent assay technique. Results: The significant post-CPB changes in sP-selectins plasma levels were associated with patient characteristics, operative variables and postoperative course. sP-selectin levels correlated significantly with surgery time, aortic cross-clamping time and inotropic support, as well as with the postoperative Pediatric Risk of Mortality score, hypotension and tachycardia. Conclusions: A relation between CPB-induced mediators and both early and late clinical effects is suggested. The up-regulation and expression of sP-selectin indicate neutrophil activation as a possible mechanism for the increase, and inhibiting it may reduce the inflammatory response associated with CPB.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1460-9592.2001.00663.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Gamma-ray and hard X-ray imaging of solar flares (1988)
    Springer
    Solar physics 118 (1988), S. 269-290 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We discuss the scientific and technical aspects of high-resolution γ-ray and X-ray imaging of solar flares. The scientific necessity for imaging observations of solar flares and the implications of future observations for the study of solar flare electrons and ions are considered. Performance parameters for a future hard X-ray and γ-ray imager are then summarized. We briefly survey techniques for high-energy photon imaging including direct collimation imaging, coded apertures, and modulation collimators. We then discuss in detail the technique of Fourier-transform imaging. The basic formalism is presented, followed by a discussion of several practical aspects of the technique. We conclude our discussion of imaging techniques with a description of the options for detectors and grid fabrication. Several planned future high-energy imagers are described including the Solar-A hard X-ray imager, the balloon-borne GRID γ-ray imager, and the Pinhole/Occulter Facility.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00148596
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Old pulsars in the low-density globular clusters MI3 and M53 (1991)
    [s.l.] : Nature Publishing Group
    Nature 349 (1991), S. 47-49 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We discovered the pulsars during a survey of globular clusters with the Arecibo 305-m radio telescope6'7. The observations were conducted at a centre frequency of 430 MHz and bandwidth of 10 MHz using the observatory's digital correlator in a manner identical to that described in ref. 8. The data ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/349047a0
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  • 4
    Electronic Resource
    Electronic Resource
    Discovery of two radio pulsars in the globular cluster M15 (1990)
    [s.l.] : Nature Publishing Group
    Nature 346 (1990), S. 42-44 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The initial observations were made using the 305-m Arecibo radio telescope at a central frequency of 430 MHz and a 10-MHz receiver bandwidth. The data were sampled at an effective rate of 1.974kHz using the Arecibo 40-MHz three-level correlation spectrometer in a manner identical to that used in ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/346042a0
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    Paper (German National Licenses)
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