Zobrazeno 1 - 10
of 44
pro vyhledávání: '"N. D. Stepina"'
Autor:
Aleksey M. Tikhonov, N. D. Stepina, A. D. Nuzhdin, N. F. Bunkin, V. E. Asadchikov, Boris S. Roshchin, Vladimir Volkov, Yu. O. Volkov
Publikováno v:
Physics of Wave Phenomena. 29:131-135
An X-ray reflectivity analysis has shown that the composition of liquid substrates affects the structure of deposited Nafion (Teflon copolymer) films. A model of Nafion monomer, developed based on small-angle X-ray scattering data, is used to interpr
Permeation of Nanoparticles into Pulmonary Surfactant Monolayer: In Situ X-ray Standing Wave Studies
Autor:
A. V. Rogachev, N. N. Novikova, M. V. Kovalchuk, Yu. N. Malakhova, O. V. Konovalov, N. D. Stepina, E. A. Shlyapnikova, I. L. Kanev, Yu. M. Shlyapnikov, S. N. Yakunin
Publikováno v:
Langmuir : the ACS journal of surfaces and colloids. 38(12)
High-resolution X-ray techniques were applied to examine the effects of gold nanoparticles (size5 nm) on natural pulmonary surfactant and pure DPPC monolayers preliminarily formed on water subphase in a Langmuir trough. Hydrophobic and hydrophilic na
Autor:
Oleg Konovalov, E. M. Pashaev, Sergey N. Yakunin, A. V. Rogachev, M. A. Chuev, N. D. Stepina, G. V. Prutskov, N. N. Novikova
Publikováno v:
Crystallography Reports. 65:772-778
A theoretical formalism for quantitative description of X-ray diffraction from Langmuir monolayers under conditions of total external reflection has been developed. The proposed approach, based on the distorted-wave approximation, allows to consider
Autor:
N. D. Stepina, Sergey N. Yakunin, A. V. Rogachev, N. N. Novikova, Vadim V. Tarasov, Mikhail V. Kovalchuk, Alexey Belov, Svetlana Gelperina, Joerg Kreuter, Oleg Konovalov, Olga Maksimenko
Publikováno v:
BioNanoScience. 10:618-624
The effect of anticancer antibiotic doxorubicin on structural organization of anionic lipid monolayers has been studied. X-ray reflectivity and grazing incidence diffraction techniques were applied to monitor the changes in 2D structure and electron
Autor:
M. A. Kremennaya, E. A. Yur’eva, N. D. Stepina, O. V. Kosmachevskaya, M. V. Kovalchuk, A. V. Rogachev, Sergey N. Yakunin, Galina Yalovega, A. F. Topunov, N. N. Novikova
Publikováno v:
Crystallography Reports. 64:952-957
XANES spectra of protein films (hemoglobin and alkaline phosphatase) formed on the surface of a liquid subphase in a Langmuir trough have been obtained experimentally. The potential of X-ray absorption spectroscopy in the total external reflection ge
Autor:
A. V. Rogachev, Igor L. Kanev, Yu. M. Shlyapnikov, Mikhail V. Kovalchuk, Sergey N. Yakunin, Elena A. Shlyapnikova, N. N. Novikova, N. D. Stepina, Victor N. Morozov
Publikováno v:
Crystallography Reports. 63:228-233
An X-ray study of the interaction of Langmuir monolayers with nanoparticles under the conditions when nanoparticles arrive at the monolayer from the side of the air medium has been performed for the first time. Measurements by the X-ray standing-wave
Autor:
A. V. Rogachev, E. A. Yurieva, T. V. Bukreeva, M. V. Kovalchuk, N. D. Stepina, N. N. Kolobylina, Sergey N. Yakunin, Alexander L. Vasiliev, I. V. Marchenko, N. N. Novikova
Publikováno v:
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. 11:685-693
X-ray studies of dipalmitoylphosphatidylcholine (DPPC) single layers on the surface of a liquid provide detailed information on the interaction of metal particles with a single layer upon an increase in the surface pressure up to the collapse. Two co
Autor:
Sergey N. Yakunin, N. D. Stepina, Galina Yalovega, Mikhail V. Kovalchuk, A. F. Topunov, A. V. Rogachev, O. V. Kosmachevskaya, N. N. Novikova, Oleg Konovalov, E. A. Yurieva
Publikováno v:
The journal of physical chemistry. B. 123(40)
X-ray studies revealed the considerable enhancement of metal-binding properties in human hemoglobin under exposure to mild damaging factors (in the presence of 0.09 M urea or upon heating for 30 min at 50 °C). Changes in the element composition of t
Autor:
Sergey N. Yakunin, Mikhail V. Kovalchuk, Olga S. Ivanova, N. D. Stepina, Oleg Konovalov, I. V. Marchenko, Tatiana Bukreeva, A. V. Rogachev, N. N. Novikova, Alexander E. Baranchikov, E. A. Yurieva, Vladimir Ivanov
Publikováno v:
Crystallography Reports. 61:857-865
The processes of structural rearrangement in a model membrane, i.e., an arachic acid monolayer formed on a colloidal solution of cerium dioxide or magnetite, are studied in situ in real time by the methods of X-ray standing waves and 2D diffraction.
Autor:
V. P. Sklizkova, N. D. Stepina, Radmir V. Gainutdinov, A. L. Tolstikhina, N. A. Kalinina, V. V. Kudryavtsev
Publikováno v:
Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques. 7:811-818
The structure of Langmuir-Blodgett (LB) films formed from solutions of comblike N,N-dimethylhexadecylammonium polyamic-acid salt on the basis of the dianhydride of 3,3′,4,4′-diphenyl-tetracarboxylic acid and o-tolidine is studied by the AFM metho