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排序方式: 共有398条查询结果,搜索用时 218 毫秒
1.
G. T. Vigant A. B. Énglin N. N. Zakharova I. V. Klimyuk 《Chemistry and Technology of Fuels and Oils》1991,27(5):244-248
Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 5, 11–13, May, 1991. 相似文献
2.
3.
A method has been developed for assay of deoxynivalenol (DON) and its metabolite desepoxideoxynivalenol (DOM-1) in animal excrements with the use of reversed-phase high-performance liquid chromatography with UV-detection (218 nm). The method includes purification in the mini-column with activated carbon and aluminium oxide. The detection limit was 50 ng/g, relative standard deviation--0.05-0.1, the degree of toxin isolation--76-89%. DON isolated from Fusarium macroceras, strain 579a, cultivated in rice under laboratory conditions, and DOM-1 obtained as a result of DON incubation with the contents of the beef first stomach, were used in the study. The structure of toxins isolated has been proved by the mass-spectrometry method. The method developed by the authors was used in the study of DON metabolism in vivo in monkeys. 相似文献
4.
G. F. Egorov D. I. Danilin E. V. Zakharova E. N. Darskaya A. A. Zubkov 《Atomic Energy》2002,93(1):595-600
The kinetics of radiation, thermal, and radiation–thermal decomposition of a mixture of nitric and acetic acids in water solutions of sodium nitrate is investigated under homogeneous conditions and with a solid phase introduced in the form of sandstone. The experimental data are used to calculate the temperature dependences of the rate of radiation, thermal, and radiation–thermal decomposition of the acids. The results obtained make it possible to calculate the dynamics of decomposition of acids for the conditions of deep burial of liquid radioactive wastes. 相似文献
5.
T. A. Bykhovskaya K. P. Zakharova T. T. Karpova O. L. Masanov A. A. Orlova O. M. Khimchenko 《Atomic Energy》1995,79(3):606-608
Main Science Center of the Russian Federation, A. A. Bochvara All-Russia Scientific-Research Institute of Standardization
in Machine Engineering. Atomnaya énergiya, Vol. 79, No. 3, pp. 197–200, September, 1995. 相似文献
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It was shown that in going from the mesomorphic γ-modification of PA-6 to the stable α-form, formation of intermediate structures
can play an important role. It was found that the formation of the polymorphous α-modification in conditions of heat treatment
at 180°C takes place due to the amorphous regions of the polymer.
__________
Translated from Khimicheskie Volokna, No. 6, pp. 15–17, November–December, 2007. 相似文献
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9.
Yu. G. Bykov T. P. Zakharova E. V. Monastyrskaya A. V. Fishgoit A. M. Dushkin A. G. Demidov 《Metal Science and Heat Treatment》2006,48(1-2):41-43
The mechanical properties of single crystals of alloy ZhS32 at a temperature of 1150–1250°C and deformation rates of 3 × 10−5, 10−4, and 10−3 sec−1 are studied. The characteristics of true ductility in tests for long-term strength in a temperature range of 1150–1250°C
are determined.
__________
Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 1, pp. 38–40, January, 2006. 相似文献
10.
E. V. Ishchenko S. V. Gaidai A. A. Byeda T. M. Zakharova A. G. Dyachenko E. V. Prilutskiy 《Journal of Superhard Materials》2017,39(5):336-342
Physicochemical characteristics of carbon nanotubes synthesized on Co2O3 and oxide Cu–Co–Fe catalysts on their base applied in the CO oxidation reaction have been investigated. It is shown that the deposition technology of the active mass, which, according to the X-ray phase analysis, is a mixture of the Cu2(OH)3NO3 and CuO phases, strongly influences the activity of the Cu–Co–Fe/CNT catalysts. The greatest amount of the Cu2(OH)3NO3 phase is observed in the catalysts produced by a single deposition of the active component on carbon nanotubes, which according to the thermodesorption mass spectroscopy, contributes to the formation of active centers with the lower activation energy of the CO2 desorption and the reaction of the CO oxidation proceeds at a considerably lower temperatures. The TEMdata indicate that at the step-by-step deposition of the active mass in the surface layer the formation of the massive agglomerates, which are inhomogeneously located on the disordered structures of nanotubes, and this unfavourably affects the catalytic properties of Cu–Co–Fe/CNT catalysts. 相似文献