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  • 1
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    Solid phase synthesis (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-04-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Merrifield, B -- New York, N.Y. -- Science. 1986 Apr 18;232(4748):341-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3961484" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Chemical Phenomena ; Chemistry ; In Vitro Techniques ; Methods ; Nucleotides/*chemical synthesis ; Peptide Fragments/metabolism ; Peptides/*chemical synthesis ; Ribonuclease, Pancreatic/chemical synthesis/metabolism ; Structure-Activity Relationship
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Caught in the act: cluster 'k+a' galaxies as a link between spirals and S0s (2014)
    Oxford University Press
    Details
    Publication Date: 2014-01-29
    Description: We use integral field spectroscopy of 13 disc galaxies in the cluster AC114 at z ~ 0.31 in an attempt to disentangle the physical processes responsible for the transformation of spiral galaxies in clusters. Our sample is selected to display a dominant young stellar population, as indicated by strong H absorption lines in their integrated spectra. Most of our galaxies lack the [O ii ]3727 emission line, and hence ongoing star formation. They therefore possess ‘k+a’ spectra, indicative of a recent truncation of star formation, possibly preceded by a starburst. Discy ‘k+a’ galaxies are a promising candidate for the intermediate stage of the transformation from star-forming spiral galaxies to passive S0s. Our observations allow us to study the spatial distributions and the kinematics of the different stellar populations within the galaxies. We used three different indicators to evaluate the presence of a young population: the equivalent width of H, the luminosity-weighted fraction of A stars, and the fraction of the galaxy light attributable to simple stellar populations with ages between 0.5 and 1.5 Gyr. We find a mixture of behaviours, but are able to show that in most of the galaxies the last episode of star formation occurred in an extended disc, similar to preceding generations of stars, though somewhat more centrally concentrated. We thus exclude nuclear starbursts and violent gravitational interactions as causes of the star formation truncation. Gentler mechanisms, such as ram-pressure stripping or weak galaxy–galaxy interactions, appear to be responsible for ending star formation in these intermediate-redshift cluster disc galaxies.
    Print ISSN: 0035-8711
    Electronic ISSN: 1365-2966
    Topics: Physics
    Published by Oxford University Press
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  • 3
    Electronic Resource
    Electronic Resource
    The overriding importance of R&D as it relates to industrial competitiveness
    Amsterdam : Elsevier
    Journal of Engineering and Technology Management 6 (1989), S. 71-79 
    Details
    ISSN: 0923-4748
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Technology , Economics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0923-4748(89)90015-5
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    Paper (German National Licenses)
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