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  • G + C content  (1)
  • PACS. 33.50.-j Fluorescence and phosphorescence; radiationless transitions, quenching (intersystem crossing, internal conversion) – 78.40.-q Absorption and reflection spectra: visible and ultraviolet – 61.48.+c Fullerenes and fullerene-related materials  (1)
  • 1
    ISSN: 1432-1432
    Keywords: Aphid ; 28S rRNA ; Secondary structure model ; G + C content ; Variable region ; Divergent evolution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Determination of the entire nucleotide sequence of the aphid 28S ribosomal RNA gene (28S rDNA) revealed that it is 4,147 by in length with a G + C content of 60.3%. Based on the nucleotide sequence, we constructed a presumed secondary-structure model of the aphid 28S rRNA which indicated that the aphid 28S rRNA is characterized by the length and high G + C content of its variable regions. The G + C content of the aphid's variable regions was much higher than that of the entire sequence of the 28S rRNA, which formed a striking contrast to those ofDrosophila with the G + C content much lower than the entire 28S molecule. In this respect, the aphid 28S rRNA somewhat resembled those of vertebrates. This is the third report of a complete large-subunit rRNA sequence from an arthropod, and the first 28S rRNA sequence for a nondipterous insect.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 18 (2002), S. 69-75 
    ISSN: 1434-6079
    Keywords: PACS. 33.50.-j Fluorescence and phosphorescence; radiationless transitions, quenching (intersystem crossing, internal conversion) – 78.40.-q Absorption and reflection spectra: visible and ultraviolet – 61.48.+c Fullerenes and fullerene-related materials
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: While the intercalation of C60 and the formation of C 60 - in the supercages of NaX and NaY are confirmed by using 129Xe NMR and ESR, the photophysical properties of C60 and C 60 - are characterized by monitoring transient reflectance spectra and kinetics, fluorescence kinetics, and diffuse reflectance spectra. C 60 - is considerably more abundant in NaY than in NaX. This difference is explained in terms of polarity difference between two zeolites. Both C60 and C 60 - have remarkably elongated excited-state lifetimes due to their collision-free environment in zeolitic nanocavities although C 60 - has much shorter lifetimes than C60. C 60 - , in particular, shows intense absorption and emission due to its reduced symmetry in zeolites.
    Type of Medium: Electronic Resource
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