Zobrazeno 1 - 10
of 13
pro vyhledávání: '"N M, KUZ'MIN A"'
Publikováno v:
Astrophysical Bulletin. 65:256-268
We analyze beats of slow magneto-acoustic and Rossby waves propagating in different directions as a possible mechanism of the formation of the magnetic cyclicity of the Sun. The dispersion law derived in terms of linear magnetohydrodynamics unambiguo
Publikováno v:
Astronomy Reports. 51:985-993
We present the results of numerical simulations of radiating nodes in jets outflowing from young stellar objects. The development of the fundamental and first reflection harmonics of the jet during the essentially non-linear stage is considered. We h
Publikováno v:
Journal of Analytical Chemistry. 55:378-383
Xerogels were prepared on the basis of silicon dioxide and doped with phosphomolybdic heteropoly acid, its ammonium salt, and the Vavele reagent. Reactions of modified xerogels with hydrazines, ascorbic acid, hydroquinone, iodide ion, and iron(II) an
Publikováno v:
Journal of Analytical Chemistry. 55:182-187
The effect of microwave and ultraviolet radiation and ultrasonic treatment on the reaction of chromium(III) with Chrome Azurol S, Arsenazo I, Alizarin, and Thoron was studied in the batch and flow modes. It was found that the reaction of chromium wit
Autor:
N. M. Kuz'min, A.V. Zhigulev, R. E. Nosov, Yu. A. Zolotov, Stanislava G. Dmitrienko, L.V. Goncharova
Publikováno v:
Analytica Chimica Acta. 373:131-138
An analytical procedure for the determination of ascorbic acid based on the reduction of molybdosilicic heteropolyacid immobilized on polyurethane foam by ascorbic acid in a microwave oven is developed. A blue-colored product of reduction of molybdos
Publikováno v:
Fresenius' Journal of Analytical Chemistry. 357:853-859
Indicator tubes have been proposed for the determination of heavy metals in solutions. Preparation procedures for indicator powders based on noncovalent modifications of reversed-phased silica gel sorbents by analytical reagents have been developed.
Publikováno v:
Fresenius' Journal of Analytical Chemistry. 357:946-949
A flow system including an on-line coated capillary column for the determination of traces of metal ions in natural waters is proposed, employing a manifold of flow microwave sample processing. This method eliminates the noise caused by the organic m
Publikováno v:
Mendeleev Communications. 8:95-96
A study of the ruthenium(IV) and (III) species in HCl solution under microwave irradiation shows a decrease in hydrolysis time, depolymerisation and reduction of ruthenium(IV) to ruthenium(III) by an order of magnitude, as compared with conventional
Autor:
Yuri A. Zolotov, Andrei A. Formanovsky, N. M. Kuz'min, Irina V. Kubrakova, T. F. Kudinova, Grigori Tsysin
Publikováno v:
The Analyst. 119:2477
A rapid and sensitive method for the differential determination of CrIII and CrVI in river water is described. Chromium species can be separated by sorption on a polymeric Detata sorbent containing conformationally flexible aminocarboxylic groups. Pr
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 32:1851-1857
1. A study has been made of the mass spectra of 20 methoxy-substituted methyl esters of benzenecarboxylic acids. 2. In the mass spectra, a number of intense peaks were observed from rearranged ions: (M-H20)+, (M-CHO)+, (M-CH3OH)+, and (M-CH5O)+. 3. T