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  • 1990-1994  (2)
  • 1935-1939
  • 32.90.+a  (1)
  • Chemotaxonomy  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Measurement of the transverse Doppler shift using a stored relativistic7Li+ ion beam (1992)
    Springer
    The European physical journal 342 (1992), S. 455-461 
    Details
    ISSN: 1434-601X
    Keywords: 03.30.+p ; 29.20.Dh ; 32.90.+a
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have performed for the first time precision spectroscopy on a coasting fast7Li+ ion beam in a storage ring. The ion beam moving with 6.4% speed of light was first electron cooled and then merged with two counterpropagating laser beams acting on two different hyperfine transitions sharing a common upper level (λ-system). One laser was frequency locked to thea 3 127J2 hfs frequency component established as a secondary frequency standard at 514 nm. The second laser was tuned over theλ-resonance, which was recorded relative to127J2 hfs components. This experiment is sensitive to the time dilation in fast moving frames and will lead to new limits for the verification of special relatively. The present status of the experiment and perspectives in accuracy are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294956
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  • 2
    Electronic Resource
    Electronic Resource
    Phytochemical and morphological support for the existence of two species inMonoclea (Hepaticae) (1992)
    Springer
    Plant systematics and evolution 180 (1992), S. 115-135 
    Details
    ISSN: 1615-6110
    Keywords: Hepaticae ; Monocleales ; Monoclea ; Chemotaxonomy ; flavonoids ; bisbibenzyls ; terpenoids ; morphology ; sporophyte ; antheridial receptacle ; geographical variation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Recognition of two different species in the liverwort genusMonoclea Hook. (monotypic orderMonocleales), viz.M. forsteri Hook. in New Zealand andM. gottschei Lindb. in the New World, is supported by characteristics of the sporophyte, antheridial receptacle and secondary metabolites.M. gottschei produces the greatest variety of flavonoids and the largest amount of bisbibenzyls ever encountered in a liverwort. In contrast,M. forsteri is poor in secondary metabolites. Two allopatric subspecies are recognized inM. gottschei, based on characteristics of the antheridial receptacle: subsp.gottschei in Chile (Valdivian region, Juan Fernandez Is.) and subsp.elongata Gradst. & Mues, subsp. nova, in tropical America. The exclusive occurrence inMonoclea of glucuronide and galacturonide flavone glycosides and the fact that capsule dehiscence may take place before full elongation of the seta are new arguments in support of the placement ofMonocleales in theMarchantiidae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00940401
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    Paper (German National Licenses)
    Fulltext
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