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991.
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Summary The arylhydrazones formed from -dicarbonyl compounds under the conditions of the azo-coupling reaction have a chelate structure with an intramolecular hydrogen bond attached to one of the carbonyl groups. 相似文献
995.
Jahn A Vreeland WN Gaitan M Locascio LE 《Journal of the American Chemical Society》2004,126(9):2674-2675
Traditional liposome preparation methods are based on mixing of bulk phases, leading to inhomogeneous chemical and/or mechanical conditions during formation; hence liposomes are often polydisperse in size and lamellarity. Here we show the formation of liposomes that encapsulate reagents in a continuous two-phase flow microfluidic network with precision control of size from 100 to 300 nm by manipulation of liquid flow rates. We demonstrate that by creating a solvent-aqueous interfacial region in a microfluidic format that is homogeneous and controllable on the length scale of a liposome, we can facilitate the fine control of liposome size and polydispersity. 相似文献
996.
Smirnov Yu. N. Komarov B. A. Kushch P. P. Ponomareva T. I. Lantsov V. M. 《Russian Journal of Applied Chemistry》2002,75(2):265-275
To control the structural contributions of the polycondensation and polymerization curing of epoxy resins, the curing kinetics of the composites diepoxide-tertiary amine and diepoxide-(primary + tertiary) amines is studied by the isothermal calorimetry. 相似文献
997.
Korchevina N. A. Sukhomazova E. N. Deryagina E. N. 《Russian Journal of Organic Chemistry》2003,39(5):752-752
Russian Journal of Organic Chemistry - 相似文献
998.
Russian Journal of General Chemistry - 相似文献
999.
This paper concerns with three series of experiments about dimethylsulfide gas phase oxidation, carried out at increasing NOx level (< 20 ppb, 1 ppm, 10 ppm) to show the relation between the amounts of nitrogen oxides and the molar yields of sulfur containing products. DMSO, DMSO2, HCHO, HCOOH and SO2 were found as main reaction products. From these experiments and from preceding studies, a sensitive decrease in the quantity of total sulfur products in aerosol phase is underlined. This result derives from the reaction of NOx with CH3S(O)O2 and CH3S(O)OO radicals, which leads to stable intermediates as methylsulphonylperoxynitrate, MSPN, with a characteristic PAN-like structure. 相似文献
1000.
A. P. Yaroshenko M. V. Savos’kin V. I. Shologon R. D. Mysyk A. N. Magazinskii 《Russian Journal of Applied Chemistry》2006,79(1):163-165
The possibility of obtaining residual graphite nitrate by water treatment of graphite nitrate and its subsequent drying was studied. The expansion coefficients were determined in the temperature range 500–900°C with a step of 100°C for the samples obtained. 相似文献