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1.
Afraimovich É. L. Vodyannikov V. V. Voyeikov S. V. Perevalova N. P. Yakovets A. F. 《Radiophysics and Quantum Electronics》2002,45(10):741-757
Using the COPHASE method and the GPS interferometry method for travelling ionospheric disturbances, we analyze in detail the spatio-temporal properties of travelling wave packets (TWP) of total electron content (TEC) disturbances. The analysis is performed on the example of a clearest TWP manifestation observed in California, USA, in October 18, 2001, using the GLOBDET technique, developed at the Institute of Solar-Terrestrial Physics of the Siberian Branch of RAS for global detection and monitoring of natural and technogenic ionospheric disturbances on the basis of TEC variations retrieved from the global network of GPS receivers. In the time domain, TWPs are quasi-periodic TEC oscillations of duration about 1 h, period of 10–20 min, and amplitude exceeding that of the background TEC fluctuations by at least one order of magnitude. The velocity and direction of TWP motion are similar to those of mid-latitude mesoscale travelling ionospheric disturbances, as obtained earlier from the analysis of phase parameters of HF radio signals and the signals of geostationary satellites and discrete space radio sources. 相似文献
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D.A. Lemenovskii S.A. Konde E.G. Perevalova 《Journal of organometallic chemistry》1982,226(3):223-227
The properties of (η5:η5-C5H4C5H4)(C5H5)2Nb2(μ-NC6H5)2 (I) have been investigated. Reaction of I with acids (HCl, H2SO4 and CX3COOH) includes diprotonation to form the dication, [(η5:η5-C5H4C5H4)(C5H5)2Nb2? (μ-NC6H5)2H2]2+ (II). The process is reversible and the initial neutral compound I may be recovered under the action of a base. The protonated compound II may lose NC6H5 ligands as C6H5NH3+; the paramagnetic product of the dissociation (C5H4C5H4)(C5H5)2Nb2Cl4 (III) has been isolated. 相似文献
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E. V. Konovalova O. B. Perevalova N. A. Koneva K. V. Ivanov E. V. Kozlov 《Bulletin of the Russian Academy of Sciences: Physics》2014,78(8):807-810
The rearrangement of the grain structure of Ni3Fe alloy upon an A1 → L12 phase transition is studied via transmission electron microscopy in combination with the electron backscatter diffraction. It is established that the formation of fresh grain boundaries of general and special types occurs, with the proportion of special-type grain boundaries in the grain boundary ensemble growing. The spectrum of the special grain boundaries changes, due to an increase of the proportion of grain boundaries Σ3 and Σ9. This strengthens the texture of the long-range ordered alloy. 相似文献
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A. N. Nesmeyanov É. G. Perevalova L. P. Yut'eva L. N. Kakurina 《Russian Chemical Bulletin》1964,13(10):1802-1804
Conclusions Amides and nitriles of 1,2-, 1,3-, and 1.1'-methyl- and ethylfetrocenecarboxylic acids were produced.Translated from Izvestiya Akademii Nauk SSSR, Seria Khimicheskaya, No. 10, pp. 1897–1899, October, 1964 相似文献
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M. G. Voronkov É. N. Deryagina V. I. Perevalova 《Chemistry of Heterocyclic Compounds》1980,16(3):225-226
The reaction of tetrachloroethylene with hydrogen sulfide at 450–500 °C leads to the formation of tetrachlorothiophene as
the principal product, along with hexachlorobutadiene, the yield of which increases as the reaction temperature is raised.
Communication 15 from the series “High-Temperature Organic Synthesis.” See [1] for communication 14.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 310–311, March, 1980. 相似文献