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We present experimental and theoretical evidence for an excited-state deactivation mechanism specific to hydrogen-bonded aromatic dimers, which may account, in part, for the photostability of the Watson-Crick base pairs in DNA. Femtosecond time-resolved mass spectroscopy of 2-aminopyridine clusters reveals an excited-state lifetime of 65 +/- 10 picoseconds(More)
92 One of poorly studied aspects of trophism of soill inhabiting invertebrates is the evaluation of nitrogen sources and the role of microorganisms in their nutrii tion, particularly in groups specializing in consuming plant food. The most widespread view is that the main food source of soil phytovores and saprovores is soil microorganisms, which is proved(More)
The spatial distribution of Elateridae larvae in the Lower Irtysh valley has been analyzed. The larvae analyzed belonged to 19 Elateridae species inhabiting soils of the floodplain and the river terrace. It has been pointed out that the larvae of Paraphotistus nigricornis, Agriotes lineatus, Limonius parallelus, and Aplotarsus incanus are most tolerant to(More)
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