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1.
2.
Sevim Akyuz Meric Bakiler Liljana Andreeva Biljana Minceva-Sukarova 《Journal of inclusion phenomena and macrocyclic chemistry》2004,48(1-2):25-29
Hofmann-type modified clathrate hosts containing 2- or 3-chloropyridine molecules attached to metal (II) tetracyanocadmate frame, with a given formula: M(Clpy)2Cd(CN)4 where M = Mn, Ni or Cd; Clpy = 2- or 3-chloropyridine, have been synthesised for the first time. Their FT-IR spectra are reported in the 400–4000 cm-1 region. All the vibrational modes of coordinated Clpy are characterised. The spectral features of the compounds studied are found to be similar to each other indicating that they have analogous structures. The coordination effect on the Clpy modes is analyzed. 相似文献
3.
O. V. Andreeva V. G. Bespalov A. L. Pyait V. N. Sizov A. S. Cherkasov 《Optics and Spectroscopy》2004,96(2):149-156
The results of a complex investigation of the recording of dynamic holograms by pulsed radiation with a duration of 20 ns and 300 ps in fullerene-containing media based on porous glasses and polymethyl methacrylate matrices are reported. Spectral analysis of these media in the range 300–700 nm was performed. The efficiency of hologram recording was found to relate with the occurrence of a band at 330 nm in the absorption spectrum of a medium. It is shown that dynamic holograms can be recorded in the fullerene-containing media by nanosecond and picosecond pulses. In the latter case, holograms arise mainly due to a change in the electronic polarizability of fullerene molecules, which is almost inertialess. The results obtained can be used in the development of ultrafast switching devices based on dynamic holograms. 相似文献
4.
V. A. Ozhiganov A. P. Kotov L. P. Andreeva L. P. Zelenin P. V. Gel'd 《Russian Physics Journal》1991,34(5):418-421
The effect of composition and temperature on the properties of the alloy PdV-20 doped with nickel was investigated. It was established that the microhardness, electroresistivity, and the normal elasticity modulus depend nonmonotonically on the content of nickel, and also that these quantities are affected significantly by the past thermal history of the samples. The results' are discussed, taking into account the nature of their intrinsic short-range order structure.Translated from Izvestiya Vysshikh. Uchebnykh Zavedenii, Fizika, No. 5, pp. 42–46, May, 1991. 相似文献
5.
The problems of choosing the optimal mathematical model for a prescribed range of parameters of a pulsed action are discussed.
A preliminary analysis performed by similarity and dimensional-analysis methods using interpolation equations of state of
the matter shows that the complete system of equations of gasdynamics can be simplified by dropping individual terms which
are not important in a given parameter range. The results of an analysis are presented in the form of nomograms, which also
make it possible to identify the class of fast and energy-intensive gasdynamic processes more accurately than at an intuitive
level.
Zh. Tekh. Fiz. 68, 44–47 (May 1998) 相似文献
6.
7.
L. S. Andreeva A. A. Andrianov V. E. Bel'skii M. F. Vavilova É. A. Gurylev K. V. Nikonorov 《Russian Chemical Bulletin》1971,20(10):2219-2221
Conclusions The hydrolysis of chloroacetophos in water includes the parallel cleavage of acetic acid, hydrochloric acid and methanol. The ratio of the products, formed in the parallel steps, was determined, and we also determined the total rate constant for the hydrolysis of chloroacetophos.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 10, pp. 2336–2338, October, 1971. 相似文献
8.
Summary The transesterification of some dialkyl alkylphosphonates with diethylene glycol, 1,6-hexanediol, and 1,20eicosanediol was investigated. 相似文献
9.
Conclusions The cyclic sulfites of the 3, 4- and 3,4-caranediols were synthesized as mixtures of two isomers that differ in the relative position of the S=O and 10-CH3 groups.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1670–1671, July, 1976. 相似文献
10.
É. A. Zvezdina O. M. Golyanskaya I. M. Andreeva A. N. Popova E. A. Medyantseva G. N. Dorofeenko 《Chemistry of Heterocyclic Compounds》1982,18(4):340-343
2-Substituted 3,5,7-triaryl-1,2-oxazepinium perchlorates were obtained by the reaction of 2,4,6-triarylpyrylium salts in dimethylformamide with nitrones and N-arylhydroxylamines. The products are the first representatives of seven-membered cations with eight electrons.See [1] for Communication 9.Deceased.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 457–460, April, 1982. 相似文献