Zobrazeno 1 - 8
of 8
pro vyhledávání: '"T. N. Vereshchagina"'
Autor:
V. S. Fedotovskii, T. N. Vereshchagina
Publikováno v:
Acoustical Physics. 61:148-151
The hydrodynamic dissipative processes that accompany strain oscillations of a dispersive medium with solid spherical inclusions are considered. Based on a simple cell model, the dependence is obtained for the energy dissipation rate, which determine
Autor:
V. S. Fedotovskii, T. N. Vereshchagina
Publikováno v:
Acoustical Physics. 55:735-740
Presented is a theory of a new type of resonant dispersion of sound in a gas-liquid bubble media based on the use of effective dynamic density. We show that because of spheroidal-translational oscillations of the bubbles the dynamic density of the ga
Autor:
E. F. Shibanova, T. N. Vereshchagina, V. V. Makarskii, O. A. Zasyadko, Yu. L. Frolov, M. G. Voronkov, L. V. Sherstyannikova, Nina N. Chipanina, V. A. Lopyrev
Publikováno v:
Chemistry of Heterocyclic Compounds. 13:569-572
3-Chloro- and 3-amino-1,2,4-triazole derivatives were subjected to a theoretical study by means of quantum-chemical calculation by the Pariser-Parr-Pople method. The experimentally observed electron transitions were assigned. The Cl atom and the NH2
Autor:
T. N. Vereshchagina, O. A. Zasyadko, L. V. Sherstyannikova, Nina N. Chipanina, M. G. Voronkov, Yu. L. Frolov, V. V. Makarskii, V. A. Lopyrev, E. F. Shibanova
Publikováno v:
Chemistry of Heterocyclic Compounds. 13:441-443
The manifestation of acid-base interactions in the electronic absorption spectra of 32 1,2,4-triazole derivatives was studied. Ionization of the heteroring does not have a substantial effect on the energies of the electron transitions of 3-chloro-5-s
Autor:
M. G. VORONKOV, V. A. LOPYREV, N. N. CHIPANINA, V. V. KAKARSKII, O. A. ZASYADKO, L. V. SHERSTYANNIKOVA, E. F. SHIBANOVA, T. N. VERESHCHAGINA, YU. L. FROLOV
Publikováno v:
Chemischer Informationsdienst. 8
Autor:
T. N. Vereshchagina, V. A. Lopyrev
Publikováno v:
Chemischer Informationsdienst. Organische Chemie. 2
Autor:
T. N. Vereshchagina, V. A. Lopyrev
Publikováno v:
Chemistry of Heterocyclic Compounds. 6:1582-1583
It is shown that a mixture of 1,2,4-triazole-3,5-dicarboxylic acid and 3-methyl-1,2,4-triazole-5-carboxylic acid is formed by oxidation of 3,5-dimethyl-1,2,4-triazole with insufficient oxidizing agent. Some derivatives of 3-methyl-1,2,4-triazole-5-ca
Publikováno v:
Chemistry of Heterocyclic Compounds. 5:681-682
By oxidation of 3,5-dimethyl-1,2,4-triazole the monopotassium salt of 1,2,4-triazole-3,5-dicarboxylic acid was obtained. The mononitryl of 1,2,4-triazole-3,5-dicarboxylic acid was isolated during the reaction between 3-diazo-1,2,4-triazole-5-carboxyl