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1.
M. A. Abdrakhmanov 《Journal of Mathematical Sciences》1995,75(6):1987-2001
For the linear equation L
u=0 in which L is a product of a 2b1-parabolic operator and a 2b2r-elliptic operator (b1, b2, and r are integers), we obtain L2-estimates for solutions of model boundary value problems, namely, for the Cauchy problem and the half-space problem. Bibliography:
5 titles.
Translated fromZapiski Nauchnykh Seminarov POMI, Vol. 197, pp. 4–27, 1992.
Translated by N. A. Karazeeva. 相似文献
2.
G. Kh. Khisamutdinov V. L. Korolev I. Z. Kondyukov I. Sh. Abdrakhmanov S. P. Smirnov A. A. Fainzilberg 《Russian Chemical Bulletin》1993,42(9):1559-1561
The procedures for the synthesis ofN-polynitromethyl derivatives of benzo[1,2-d;4,5d]ditriazole-4,8-dione are described. Some chemical properties of the compounds obtained are investigated.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1623–1625, September, 1993. 相似文献
3.
B. S. Fedorov N. I. Golovina L. S. Barinova V. V. Arakcheeva G. V. Lagodzinskaya M. V. Loginova R. F. Trofimova V. Z. Laishev V. F. Lazarev S. P. Smirnov I. Sh. Abdrakhmanov A. I. Firkin L. O. Atovmyan 《Russian Chemical Bulletin》1992,41(12):2185-2188
1,1,4,4-Tetranitrobutane-2,3-diol reacts with formaldehyde, forming 2,2-dinitropropane-1,3-diol or a cyclic ether — 4,4-dinitro-2,3-dihydroxytetrahydrofuran — as a function of the reaction conditions.Institute of Chemical Physics, Chernogolovka, Russian Academy of Sciences, 142432 Chernogolovka. Translated fromIzvestiya Akademii Nauk, Seriya Khimicheskaya, No. 12, pp. 2755–2759, December, 1992. 相似文献
4.
D. I. D'yachenko A. G. Mustafin V. V. Shereshovets N. N. Kabal'nova V. P. Kazakov I. B. Abdrakhmanov G. A. Tolstikov 《Russian Chemical Bulletin》1998,47(8):1611-1612
An unusual direction of the reaction of 2-(cyclopent-2-enyl)aniline hydrochloride with dimethyldioxirane was found: the formation
of two isomeric products,viz., 3- and 6-chloro-2-(cyclopent-2-enyl)anilines, was observed.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1654–1655, August, 1998. 相似文献
5.
Krivonogov V. P. Kozlova G. G. Sivkova G. A. Spirikhin L. V. Abdrakhmanov I. B. Murinov Yu. I. Tolstikov G. A. 《Russian Journal of Organic Chemistry》2003,39(2):257-260
A reaction was studied of previously unknown 1,3-bis(2-hydroxy-3-chloropropyl)uracil, 1,3-bis(2- hydroxy-3-chloropropyl)-6-methyluracil, and 1,3-bis(2-hydroxy-3-chloropropyl)-5-fluorouracil with 1,3-bis[3-(3-methyl-2H-5-pyrazolon-1-yl)-2-hydroxypropyl]-6-methyluracil. 相似文献
6.
Krivonogov V. P. Sivkova G. A. Belaya E. A. Greben'kova N. V. Kozlova G. G. Abdrakhmanov I. B. Spirikhin L. V. Mannapova R. T. 《Russian Journal of Organic Chemistry》2003,39(5):723-726
Reactions of 1,3-bis(3-chloro-2-hydroxypropyl)uracil, 1,3-bis(3-chloro-2-hydroxypropyl)-6-methyluracil, 1,3-bis(3-chloro-2-hydroxypropyl)-5-hydroxy-6-methyluracil, and 1,3-bis(3-chloro-2-hydroxypropyl)-5-fluorouracil with 2-amino-4-methylthiobutanoic acid (methionine) were studied for the first time. 相似文献
7.
Krivonogov V. P. Kozlova G. G. Belaya E. A. Spirikhin L. V. Abdrakhmanov I. B. 《Russian Journal of General Chemistry》2004,74(5):763-766
Alkylation of 6-methyluracil, 5-hydroxy-6-methyluracil, and 6-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-ylammonium sulfate with isopropyl and ethyl chloroacetates afforded previously unknown alkyl 2-(6-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-1-yl)acetates, alkyl 2-(1-alkoxycarbonylmethyl-6-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-3-yl)acetates, 1,3-bis(alkoxycarbonylmethyl)-6-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-ylammonium sulfates, and alkyl 2-[1,3-bis(alkoxycarbonylmethyl)-6-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yloxy]acetates. 相似文献
8.
Gataullin R. R. Afonkin I. S. Fatykhov A. A. Spirikhin L. V. Tal"vinskii E. V. Abdrakhmanov I. B. 《Russian Chemical Bulletin》2001,50(4):659-664
Electrophilic addition of HCl or Br2 to N-acyl-2-(alk-2-enyl)anilines is accompanied by intramolecular cyclization of these amides to give 3,1-benzooxazine hydrochlorides or hydrobromides in high yields. 相似文献
9.
Gataullin R. R. Afon"kin I. S. Fatykhov A. A. Spirikhin L. V. Abdrakhmanov I. B. 《Russian Chemical Bulletin》2001,50(12):2466-2467
The reaction of 6-(cyclopent-1-enyl)-N-ethoxycarbonyl-2-methylaniline with Br2 or its reaction with NH3 followed by the reaction with Br2 afforded 2"-bromo-8-methylspiro(4H-3,1-benzooxazine-4,1"-cyclopentan)-2(1H)-one and 2-amino-2"-bromo-8-methylspiro(4H-3,1-benzooxazine-4,1"-cyclopentane), respectively. 相似文献
10.
G. L. Sharipov R. Kh. Gainetdinov A. M. Abdrakhmanov 《Russian Chemical Bulletin》2008,57(9):1831-1836
The ultrasonic (20 kHz) multibubble sonoluminescence spectra of aqueous air- or argon-saturated solutions of CeCl3, TbCl3, and DyCl3 were obtained. Saturation with argon leads to the intensity redistribution in the spectrum of the continuum with an increase
in its short-wavelength part and increases the intensity of the characteristic emission of Ce3+ and Tb3+ due to the enhancement of the sonophotoluminescence intensity, i.e., the re-emission of the absorbed part of the continuum by these ions. The Ce3+, Tb3+, and Dy3+ ions quench the OH* emission at 310 nm with a qualitative correlation between the degree of quenching and the standard redox
potentials of the pairs LnIV/LnIII.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1797–1802, September, 2008. 相似文献