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21.
V. V. Privezentsev E. P. Kirilenko A. N. Goryachev A. A. Batrakov 《Semiconductors》2017,51(2):178-183
The results of studies of the surface layer of silicon and the formation of precipitates in Czochralski n-Si (100) samples implanted with 64Zn+ ions with an energy of 50 keV and a dose of 5 × 1016 cm–2 at room temperature and then oxidized at temperatures from 400 to 900°C are reported. The surface is visualized using an electron microscope, while visualization of the surface layer is conducted via profiling in depth by elemental mapping using Auger electron spectroscopy. The distribution of impurity ions in silicon is analyzed using a time-of-flight secondary-ion mass spectrometer. Using X-ray photoelectron spectroscopy, the chemical state of atoms of the silicon matrix and zinc and oxygen impurity atoms is studied, and the phase composition of the implanted and annealed samples is refined. After the implantation of zinc, two maxima of the zinc concentration, one at the wafer surface and the other at a depth of 70 nm, are observed. In this case, nanoparticles of the Zn metal phase and ZnO phase, about 10 nm in dimensions, are formed at the surface and in the surface layer. After annealing in oxygen, the ZnO · Zn2SiO4 and Zn · ZnO phases are detected near the surface and at a depth of 50 nm, respectively. 相似文献
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O V Stepanets V S Karpov V M Komarevsky A P Borisov I T Farrahov G Y Solov'eva L A Pilipets G F Batrakov T A Chudinovskyh 《The Analyst》1992,117(4):813-816
Results of a study on the distribution of the man-made radionuclides 137Cs and 90Sr in the surface waters of several European seas are presented. Based on an analysis of the ratio of these two radionuclides, an attempt was made to isolate the 'Chernobyl water' and to estimate the contribution of 'Chernobyl radioactivity' to the total radioactivity in the waters of the seas investigated. 相似文献
24.
V. P. Afanas’ev M. V. Afanas’ev A. A. Batrakov W. Bohmeyer D. Naujoks A. V. Lubenchenko A. Markin 《Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques》2011,5(1):70-74
Methods for measuring the layer-by-layer profiles of hydrogen in structural materials based on interpretation of the energy
spectra of electrons reflected within a given spatial angle are discussed. Elastically reflected spectroscopy makes it possible
to determine the hydrogen isotope content, but its implementation requires an energy resolution on the order of 1 eV. In the
experimental implementation of the method based on analysis of the domelike part of the spectrum of reflected electrons, the
required energy resolution of an analyzer is about 1%. Such a level of resolution makes it possible to measure the spectrum
for several seconds. The possibilities of this method are illustrated with the use of hydrocarbon coatings. 相似文献
25.
A.?L.?Klyuev Z.?A.?RotenbergEmail author V.?V.?Batrakov 《Russian Journal of Electrochemistry》2005,41(1):87-90
Frequency dependences of impedance of a passive iron electrode in 0.5 M Na2SO4 solutions with and without 0.01 M K4[Fe(CN)6] are obtained by a pulsed method and the Fourier transform. At 1–1000 Hz, the results in 0.5 M Na2SO4 satisfactorily agree with our previous results obtained by a lock-in method. With the [Fe(CN)6]4- ions present, the impedance decreases faster at lower frequencies. The impedance of the oxide film/solution interface relaxes longer the film impedance. These conclusions are similar to those obtained earlier.Translated from Elektrokhimiya, Vol. 41, No. 1, 2005, pp. 97–101.Original Russian Text Copyright © 2005 by Klyuev, Rotenberg, Batrakov.To the Centennial of B.N. Kabanov. 相似文献
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The influence of hydrogen sulfide (10–100 mg/1) on the Armco iron anodic dissolution in an aerated 0.17 M Na2SO4 solution is investigated. During a potentiostatic anodic polarization, the hydrogen sulfide introduction makes the current
increase stepwise. The magnitude of the increase depends on the duration of preliminary anodic polarization, electrode potential,
and hydrogen sulfide concentration. The anodic metal dissolution activation by hydrogen sulfide is explained by chemical conversion
of the oxide-hydroxide passivating film into iron sulfide that is generated at the metal surface in the form of a porous film
and does not hinder the electrode dissolution.
Dedicated to the ninetieth anniversary of Ya.M. Kolotyrkin’s birth. 相似文献
28.
S. G. Batrakov M. M. Shub B. V. Rozynov L. D. Bergel'son 《Chemistry of Natural Compounds》1975,10(1):1-7
Conclusions From the cell lipids ofActinomyces globisporus 1131 a lipo amino acid has been isolated which is a N2-[L-(3-acyloxy)acyl]-L-ornithine. The configurations of all the asymmetric centers in an ornithino lipid have been established for the first time.M. M. Shemyakin Institute of the Chemistry of Natural Compounds, Academy of Sciences of the USSR. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 3–10, January–February, 1974. 相似文献
29.
S. G. Batrakov E. F. Il'ina B. V. Rozynov L. D. Bergel'son 《Russian Chemical Bulletin》1975,24(1):85-91
Conclusions The fragmentation under electron impact of the molecular ions of synthetic methyl esters of 1,2-di-O-acyl-3-O-(2',3',4'-tri-O-acetyl--D-glucopyranuronosyl)-L-glycerides was studied. Mass spectrometry of such compounds gives extensive information on their structure.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 1, pp. 94–102, January, 1975. 相似文献
30.
K. Yu. Gordeev V. N. Filarin S. V. Bondarenko M. A. Kirpichenok N. A. Gordeeva I. I. Grandberg S. G. Batrakov 《Chemistry of Natural Compounds》1990,26(2):143-147
The Antarctic krillEuphausia superba Dana contains about 5% of its natural weight of extractable lipids, more than half of which are in the form of phospholipids — phosphatidylcholine (33–36% of the sum of the lipids), phosphatidylethanolamine (15–17%), lysophosphatidylcholine (3–4%), and others (2–3%) — while among the phosphorus-free components triacylglycerols predominate (32–35%). In the first two phospholipids the dominating fatty acid residue is the arachidonic acid residue (more than 40% of the sum of the acyl residues) and the amounts of residues of eicosapentaenoic acid (C20 : 5w3) are about 13 and 28%, respectively. A simple procedure for isolating the phosphatidylcholine and phosphatidylethanolamine is proposed. For the analysis of the fatty acid a new method was used, consisting of the HPLC of their (7-diethylaminocoumarin-4-yl)hydrazides, with fluorometric detection.Scientific Research Laboratory of Biologically Active Substances of Hydrobionts, USSR Ministry of Health, Moscow. K. A. Timiryazev Moscow Agricultural Academy. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 181–187, March–April, 1990. 相似文献