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  • 1
    Electronic Resource
    Electronic Resource
    The Hubble Space Telescope and Other Initiatives (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 571 (1989), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1989.tb50536.x
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  • 2
    Electronic Resource
    Electronic Resource
    THE EVOLUTION OF X-RAY CLUSTERS OF GALAXIES (2002)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 40 (2002), S. 539-577 
    Details
    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Notes: Abstract Considerable progress has been made over the past decade in the study of the evolutionary trends of the population of galaxy clusters in the Universe. In this review we focus on observations in the X-ray band. X-ray surveys with the ROSAT satellite, supplemented by follow-up studies with ASCA and Beppo-SAX, have allowed an assessment of the evolution of the space density of clusters out to z= 1 and the evolution of the physical properties of the intracluster medium out to z= 0.5. With the advent of Chandra and Newton-XMM and their unprecedented sensitivity and angular resolution, these studies have been extended beyond redshift unity and have revealed the complexity of the thermodynamical structure of clusters. The properties of the intracluster gas are significantly affected by nongravitational processes including star formation and Active Galactic Nuclei (AGN) activity. Convincing evidence has emerged for modest evolution of both the bulk of the X-ray cluster population and their thermodynamical properties since redshift unity. Such an observational scenario is consistent with hierarchical models of structure formation in a flat low-density universe with Omegam= 0.3 and sigma8= 0.7-0.8 for the normalization of the power spectrum. Basic methodologies for construction of X-ray-selected cluster samples are reviewed, and implications of cluster evolution for cosmological models are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.astro.40.120401.150547
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  • 3
    Electronic Resource
    Electronic Resource
    Bargaining with science (1974)
    [s.l.] : Nature Publishing Group
    Nature 249 (1974), S. 790-791 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] PRESIDENT Nixon returned from his triumphal tour of the Middle East last week armed with a clutch of promises and agreements which once again underline the importance of American science and technology as instruments of foreign policy. During his five-nation spectacular, he dangled the prize of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/249790a0
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  • 4
    Electronic Resource
    Electronic Resource
    Dear Russell… Dear Dixie … (1974)
    [s.l.] : Nature Publishing Group
    Nature 249 (1974), S. 686-686 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A COUPLE of months ago, the Atomic Energy Commission (AEC) received a rude shock from a sister agency in the federal government when the Environmental Protection Agency published a blistering critique of some of the AEC's key justifications for pushing ahead at breakneck speed with the breeder ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/249686a0
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  • 5
    Electronic Resource
    Electronic Resource
    Academy exposes a sham (1974)
    [s.l.] : Nature Publishing Group
    Nature 248 (1974), S. 633-633 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] FOR years now, spokesmen for the Nixon administration have been touting the line that federal research and development expenditure are gradually being focused on programmes which will benefit society and help solve "critical domestic problems" in the United States. Such sentiments reached their ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/248633a0
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  • 6
    Electronic Resource
    Electronic Resource
    Rio Blanco draws a blank (1974)
    [s.l.] : Nature Publishing Group
    Nature 248 (1974), S. 543-543 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A CONTROVERSIAL scheme to explode a string of nuclear devices underneath the Colorado Rockies to extract vast deposits of natural gas has run into a critical snag. A key test of the technique, a 90-kiloton blast called Rio Blanco which was set off last year amid a storm of protest, has turned out ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/248543a0
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  • 7
    Electronic Resource
    Electronic Resource
    Ford spells out the energy choices (1974)
    [s.l.] : Nature Publishing Group
    Nature 248 (1974), S. 546-546 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] LATE LAST year, when Arab countries suddenly shut off oil supplies to the United States, the Nixon Administration and the United States Congress reacted predictably by espousing a pell-mell drive to make the United States independent of foreign suppliers of energy so that the country would not get ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/248546a0
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  • 8
    Electronic Resource
    Electronic Resource
    Cancer research runs into trouble (1974)
    [s.l.] : Nature Publishing Group
    Nature 248 (1974), S. 465-466 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A COMMITTEE of biomedical scientists has delivered a stinging attack on a prominent and highly controversial cancer research programme supported by the US National Cancer Institute. The committee's criticisms and complaints cut deep into the philosophy underlying much of the loudly proclaimed ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/248465b0
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  • 9
    Electronic Resource
    Electronic Resource
    AEC case for fast breeders (1974)
    [s.l.] : Nature Publishing Group
    Nature 248 (1974), S. 372-373 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN June last year, the US Court of Appeals in Washington dealt a potentially severe blow to the United States fast breeder reactor programme-the great white hope for meeting the country's energy meeds by the end of this century. The court ordered the US Atomic Energy Commission (AEC) to obey the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/248372a0
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  • 10
    Electronic Resource
    Electronic Resource
    FDA halts scheme to combat anaemia (1974)
    [s.l.] : Nature Publishing Group
    Nature 247 (1974), S. 498-499 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A CONTROVERSIAL scheme to provide what amounts to preventive medicine through supermarkets and grocery stores has been called off at the last moment by the US Food and Drug Administration (FDA). The scheme involves adding large helpings of iron to most of the bread baked and sold in the United ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/247498a0
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