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V. V. Kuznetsov L. M. Skibina I. N. Loskutnikova Yu. E. Alekseev 《Protection of Metals》2001,37(1):31-34
It is shown that the strongest deceleration of the electrodeposition of cadmium in inhibited media is observed in the domain of loosening the structure of a mixed solvent (0.45 x
2 0.25) when the molecular adsorption of organic solvent on Cd is maximum. The process is maximally facilitated in the domain of ordering the acetonitrile's (AN) structure (0.9 x
2 0.75), where perchlorate anions dominate at the cathode surface. Crown-ester exhibits maximum inhibition effect under the conditions of preferential adsorption of its molecules, i.e., in the domain of the prevalence of the nonaqueous component in the mixture (x
2 0.95). 相似文献
14.
Aleksandra A. Ageeva Ilya M. Magin Alexander B. Doktorov Victor F. Plyusnin Polina S. Kuznetsova Alexander A. Stepanov Alexander A. Alekseev Nikolay E. Polyakov Tatyana V. Leshina 《International journal of molecular sciences》2021,22(12)
The study of the L- and D-amino acid properties in proteins and peptides has attracted considerable attention in recent years, as the replacement of even one L-amino acid by its D-analogue due to aging of the body is resulted in a number of pathological conditions, including Alzheimer’s and Parkinson’s diseases. A recent trend is using short model systems to study the peculiarities of proteins with D-amino acids. In this report, the comparison of the excited states quenching of L- and D-tryptophan (Trp) in a model donor–acceptor dyad with (R)- and (S)-ketoprofen (KP-Trp) was carried out by photochemically induced dynamic nuclear polarization (CIDNP) and fluorescence spectroscopy. Quenching of the Trp excited states, which occurs via two mechanisms: prevailing resonance energy transfer (RET) and electron transfer (ET), indeed demonstrates some peculiarities for all three studied configurations of the dyad: (R,S)-, (S,R)-, and (S,S)-. Thus, the ET efficiency is identical for (S,R)- and (R,S)-enantiomers, while RET differs by 1.6 times. For (S,S)-, the CIDNP coefficient is almost an order of magnitude greater than for (R,S)- and (S,R)-. To understand the source of this difference, hyperpolarization of (S,S)-and (R,S)- has been calculated using theory involving the electron dipole–dipole interaction in the secular equation. 相似文献
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S. E. Lysenko O. V. Ovechkina A. S. Alekseev L. S. Zhuravlev O. Yu. Vasilev Y. V. Makhnev I. Yu. Dubov K. A. Tarov 《Power Technology and Engineering (formerly Hydrotechnical Construction)》2020,54(1):84-88
The technology, flow diagram, and results of combined cleaning of deposits from the internal heating surfaces (tubes) of high-pressure heaters are describe 相似文献
18.
D. S. Alekseev E. I. Badu A. E. Gorodetsky V. V. Dubarenko A. Yu. Kuchmin I. L. Tarasova 《Mathematical Models and Computer Simulations》2009,1(6):757-767
The apparatus and functioning of the ciliary apparatus of ciliated epithelial cells and nasal mucosa is described. A model
is suggested for the ciliary apparatus as a system of solid bodies with forces. This model and the results of computer modeling
are mathematically described 相似文献
19.
A. D. Alekseev K. A. Bronnikov N. I. Kolosnitsyn V. N. Mel'nikov A. G. Radynov 《Measurement Techniques》1994,37(1):1-5
A simulation is described for measuring the newtonian gravitational constant G in the SEE space experiment. Two methods are examined for estimating G: the two-point method and the integral one. When the two-point method is used, to provide an error not more than G/G 1·10
–6 requires path measurements to be performed with an error of not more than 1·10–8 m=/50 ( is the green line wavelength). In the integral method, the same error in estimating G is attained with an error of measurement different by two orders of magnitude, 1·10–6 m.Translated from Izmeritel'naya Tekhnika, No. 1, pp. 3–5, January, 1994. 相似文献
20.
N.?M.?BarbinEmail author A.?M.?Kobelev D.?I.?Terent’ev S.?G.?Alekseev 《Radiochemistry》2017,59(5):507-511
The behavior of actinides (U, Am, Pu) in the course of combustion of radioactive graphite in steam was studied by thermodynamic modeling. Thermodynamic modeling was performed using TERRA program in the temperature interval from 373 to 3273 K to determine the possible composition of volatile actinide species formed in the course of graphite utilization by heating in steam. The modeling shows that the actinides at high temperatures are present in the following forms: U, as UO3 and UO2 vapors and as UO3 – and UO2 + ions; Am, as Am vapor; and Pu, as PuO2 and PuO vapors and as ionized PuO+. The main reactions within separate phases and at the interface were revealed, and their equilibrium constants were determined. 相似文献