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    Zobov, V. E.
    Reversible and Irreversible propagation of quantum information and its manifestation in multiple-quantum NMR spectra in solids / V. E. Zobov, A. A. Lundin // J. Exp. Theor. Phys. - 2020. - Vol. 131, Is. 2. - P. 273-279, DOI 10.1134/S1063776120060096. - Cited References: 33. - This work was supported by the Ministry of Science and Higher Education of the Russian Federation within the State Task 0082-2019-0001 (State Registration Number AAAA-A19-119012890064-7) . - ISSN 1063-7761. - ISSN 1090-6509
Рубрики:
DYNAMICS
   LOCALIZATION
   SIMULATIONS
   COHERENCES
Аннотация: On the basis of the earlier developed statistical theory of the growth of the effective size of correlated clusters (the number of correlated spins), an expression for the shape of the multiple-quantum (MQ) NMR spectrum is obtained that takes into account the loss of coherence in a spin system due, for example, to the controlled intervention of the experimenter. It is shown that the scrambling and decoherence processes in the MQ spectrum of the multiparticle system of a solid are not separated, unlike the corresponding spectra of some large isolated molecules [27] in a solution. The relations obtained allow one to extract the necessary information about the above processes (scrambling and decoherence) from the dependence of the MQ spectra on experimental parameters.

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Публикация на русском языке Зобов, Владимир Евгеньевич. Обратимое и необратимое распространение квантовой информации и проявление его в спектрах многоквантового ЯМР в твердом теле [Текст] / В. Е. Зобов, А. А. Лундин // Журн. эксперим. и теор. физ. - 2020. - Т. 158 Вып. 2. - С. 300-308

Держатели документа:
RAS, Fed Res Ctr, Kirensky Inst Phys, KSC,SB, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Semenov Inst Chem Phys, Moscow 117977, Russia.

Доп.точки доступа:
Lundin, A. A.; Зобов, Владимир Евгеньевич; Ministry of Science and Higher Education of the Russian Federation [0082-2019-0001, AAAA-A19-119012890064-7]
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Short-term culture of monocytes as an in vitro evaluation system for bionanomaterials designated for medical use / E. I. Shishatskaya [et al.] // Food Chem. Toxicol. - 2016. - Vol. 96. - P. 302-308, DOI 10.1016/j.fct.2016.08.025. - Cited References: 46 . - ISSN 0278-6915

РУБ Food Science & Technology + Toxicology
Рубрики:
MAGNETIC NANOPARTICLES
   CELLULAR REDUCTION
   PROTEIN CORONA
   CELLS
   MECHANOTRANSDUCTION
   NANOMATERIALS
   LOCALIZATION
   BIOMATERIALS
   CYTOSKELETON
   ACTIVATION
Кл.слова (ненормированные):
Biocompatible biopolymers -- Polyhydroxyalkanoates -- Nanomaterials -- Nanodiamonds -- Fullerenes -- Bio-nanomaterials -- Monocytes
Аннотация: We studied the feasibility of using a short-term culture of monocytes, isolated from peripheral donor blood, to assess the biological activity of different types of bionanomaterials (BNM): biodegradable polimeric particles, fiber and film substrates of micro- and nano-dimensions, fullerenes (F) and nanodiamonds (ND), which are either currently in use and/or potentially applicable in medicine. Additionally, the effect of creating a protein corona on ND and F particles was investigated. The cellular reduction of (4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) is a well-established tool for assessing the viability/metabolic activity of cells. The scanning electron microscopy assay can detect fine changes in cell morphology. In the present study BNM have been shown to affect; in a size, chemical composition and morphological characteristics-dependent manner, the ability of monocytes to reduce MTT as well as their morphology. Moreover, the specific effects of ND and F on MTT reduction and cell morphology were exhibited in a dose-dependent manner and sensitive to the formation of surface protein corona. Our results suggest that short-term culture of monocytes is a sensitive model system for assessing the biological effects of BMPs in vitro. © 2016 Elsevier Ltd

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Держатели документа:
Siberian Federal University, Svobodnuy Av. 79, Krasnoyarsk, Russian Federation
Laboratory of Anatomy, Histology, Embryology, School of Medicine, University of Crete, Heraklion, Greece
Institute of Physics, Russian Academy of Science, Siberian Division, Akademgorodok, 50, Build. 38, Krasnoyarsk, Russian Federation
Laboratory of Toxicology, Medical School, University of Crete, Heraklion, Greece

Доп.точки доступа:
Shishatskaya, E. I.; Шишацкая, Екатерина Игоревна; Nikitovic, D.; Shabanov, A. V.; Шабанов, Александр Васильевич; Tzanakakis, G. N.; Tsatsakis, A. M.; Menzianova, N. G.
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    Grigoriev, P. D.
    Slow in-plane magnetoresistance oscillations in multiband quasi-two-dimensional metals / P. D. Grigoriev, M. M. Korshunov, T. I. Mogilyuk // J. Supercond. Nov. Magn. - 2016. - Vol. 29, Is. 4. - P. 1127-1132, DOI 10.1007/s10948-016-3373-x. - Cited References:73. - We are grateful to V.M. Pudalov, I. A. Nekrasov, and S.G. Ovchinnikov for useful discussions. We acknowledge the partial support by RFBR (Grants 16-02-00522 and 16-02-00098) and the President Grant for Government Support of the Leading Scientific Schools of the Russian Federation (NSh-2886.2014.2). . - ISSN 1557-1939. - ISSN 1557-1947
   Перевод заглавия: Медленные внутриплоскостные осцилляции магнетосопротивления в многозонных квазидвумерных металлах

РУБ Physics, Applied + Physics, Condensed Matter
Рубрики:
High-temperature superconductivity
   High magnetic-fields
   Iron-based materials
   Conductors
   Localization
   Weak
Кл.слова (ненормированные):
Fermi surface -- Quantum oscillations -- Fe-based superconductors -- Slow -- oscillations -- Magnetoresistance
Аннотация: Slow oscillations (SlO) of magnetoresistance is a convenient tool to measure electronic structure parameters in quasi-two-dimensional metals. We study the possibility to apply this method to multi-band conductors, e.g., to iron-based high-temperature superconducting materials. We show that SlO can be used to measure the interlayer transfer integral in multi-band conductors similar to single-band metals. In addition, the SlO allow to measure and compare the effective masses or the electron scattering rates in various bands.

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Держатели документа:
LD Landau Theoret Phys Inst, Chernogolovka 142432, Russia.
Inst Laue Langevin, 71 Ave Martyrs, F-38000 Grenoble, France.
Natl Univ Sci & Technol MISiS, Moscow 119049, Russia.
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia.
Natl Res Ctr, Kurchatov Inst, Moscow, Russia.

Доп.точки доступа:
Korshunov, M. M.; Коршунов, Максим Михайлович; Mogilyuk, T. I.; RFBR [16-02-00522, 16-02-00098]; Leading Scientific Schools of the Russian Federation [NSh-2886.2014.2]
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Kolovsky, A. R.
Cyclotron-Bloch dynamics of a quantum particle in a two-dimensional lattice. II. Arbitrary electric field directions / A. R. Kolovsky, I. Chesnokov, G. Mantica // Phys. Rev. E. - 2012. - Vol. 86, Is. 4. - Ст. 41146, DOI 10.1103/PhysRevE.86.041146. - Cited References: 15. - We thank Jean Bellissard and Italo Guarneri for illuminating comments on the nature of the energy spectrum for irrational beta. Computations for this work have been performed on the CSN4 cluster of INFN in Pisa. G. M. acknowledges the support of MIUR-PRIN project "Nonlinearity and Disorder in Classical and Quantum Transport Processes." . - ISSN 1539-3755

РУБ Physics, Fluids & Plasmas + Physics, Mathematical
Рубрики:
MAGNETIC-FIELDS
LOCALIZATION
Аннотация: We study the quantum dynamics of a charged particle in a two-dimensional lattice, subject to constant and homogeneous electric and magnetic fields. We find that different regimes characterize these motions, depending on a combination of conditions, corresponding to weak and strong electric field intensities, rational or irrational directions of the electric field with respect to the lattice, and small or large values of the magnetic (Peierls) phase.

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Держатели документа:
[Kolovsky, Andrey R.] LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
[Kolovsky, Andrey R.
Chesnokov, Ilya] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Mantica, Giorgio] Univ Insubria, Ctr Nonlinear & Complex Syst, Dept Sci & High Technol, I-22100 Como, Italy
[Mantica, Giorgio] INFN Sez Milano, Milan, Italy
[Mantica, Giorgio] CNISM Unita Como, Como, Italy

Доп.точки доступа:
Chesnokov, I. Yu.; Mantica, G.; Коловский, Андрей Радиевич
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Ignatchenko, V. A.
High-Frequency Susceptibility of a Superlattice with 2D Inhomogeneities / V. A. Ignatchenko, Y. I. Mankov, D. S. Tsikalov // J. Exp. Theor. Phys. - 2008. - Vol. 107, Is. 4. - P. 603-611, DOI 10.1134/S1063776108100075. - Cited References: 26. - This work was supported in part by grant no. 3818.2008.3 from the President of Russia in accordance with the program supporting leading scientific schools. . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
SPIN-WAVE SUSCEPTIBILITY
   PERIODIC MULTILAYERS
   LOCALIZATION
   SYSTEMS
   SPECTRUM
   DISORDER
   MEDIA
Кл.слова (ненормированные):
Energy conservation -- Energy gap -- Energy management -- Frequency bands -- Gallium alloys -- Green's function -- Probability density function -- Three dimensional -- Band gaps -- Energy conservation laws -- Green functions -- High frequencies -- Imaginary parts -- Magnon crystals -- Scattered waves -- Superlattice layers -- Wave spectrums -- Phase interfaces
Аннотация: We investigate the high-frequency susceptibility (Green function) of an initially sinusoidal 1D superlattice with 2D phase inhomogeneities that model the deformations of the interfaces between the superlattice layers. For waves propagating along the superlattice axis ( the geometry of a photon or magnon crystal), we have found a peculiar behavior of the imaginary part of the Green function that consists in a significant difference between the peaks corresponding to the edges of the band gap in the wave spectrum. The peak corresponding to the lower-frequency band edge remains essentially unchanged as the root-mean-square fluctuation of the 2D inhomogeneities. 2 increases, while the peak corresponding to the higher-frequency band edge broaden and decreases sharply in height until its complete disappearance with increasing gamma(2). This behavior of the peaks corresponds to a band gap closure mechanism that differs from the traditional one characteristic of 1D and 3D inhomogeneities. These effects can be explained by a peculiarity of the energy conservation laws for the incident and scattered waves for 2D inhomogeneities in a 1D superlattice.

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Держатели документа:
[Ignatchenko, V. A.
Mankov, Yu. I.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Mankov, Yu. I.
Tsikalov, D. S.] Siberian Fed Univ, Krasnoyarsk 660062, Russia
ИФ СО РАН
L.V. Kirenskii Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Krasnoyarsk 660062, Russian Federation

Доп.точки доступа:
Mankov, Y. I.; Tsikalov, D. S.; Цикалов, Денис Сергеевич; Игнатченко, Вальтер Алексеевич
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Ignatchenko, V. A.
Partial restoration of the wave spectrum of a superlattice due to cross correlations between one- and three-dimensional inhomogeneities / V. A. Ignatchenko, Y. I. Mankov // Phys. Rev. B. - 2007. - Vol. 75, Is. 23. - Ст. 235422, DOI 10.1103/PhysRevB.75.235422. - Cited References: 32 . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
ELASTIC MEDIUM THEORY
   PERIODIC MULTILAYERS
   SPIN-WAVES
   LOCALIZATION
   SYSTEMS
   SUSCEPTIBILITY
   DISORDER
   MEDIA
Аннотация: Effects of cross correlations between one-dimensional (1D) and three-dimensional (3D) random inhomogeneities on the wave spectrum in sinusoidal superlattices are studied theoretically. The situation when the gap in the spectrum (the forbidden zone) at the first Brillouin zone boundary of the superlattice is closed under the action of the 1D inhomogeneities is considered. The phenomenon of the partial opening of this gap is found when the 3D inhomogeneities cross correlated with the 1D inhomogeneities add to the superlattice. The appearance of the logarithmic resonance in the center of the forbidden zone under the action of the cross correlations is shown. The physical nature of the effects in the wave spectrum of the superlattice that are caused by the cross correlations and the relation of these effects with the asymptotic properties of the correlation function of inhomogeneities are discussed.

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Держатели документа:
SB RAS, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
L. V. Kirensky Institute of Physics, SB RAS, 660036 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Mankov, Y. I.; Игнатченко, Вальтер Алексеевич
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Spectroscopic studies of fractal aggregates of silver nanospheres undergoing local restructuring / S. V. Karpov [et al.] // J. Chem. Phys. - 2006. - Vol. 125, Is. 11. - Ст. 111101, DOI 10.1063/1.2229202. - Cited References: 30 . - ISSN 0021-9606

РУБ Physics, Atomic, Molecular & Chemical
Рубрики:
ENHANCED RAMAN-SCATTERING
   SMALL-PARTICLE COMPOSITES
   OPTICAL-PROPERTIES
   DISORDERED CLUSTERS
   NONLINEAR OPTICS
   LOCALIZATION
   NANOPARTICLES
   EIGENMODES
   BOUNDS
Кл.слова (ненормированные):
Large-scale fractal geometry -- Nonlinear optical responses -- Restructuring -- Silver nanospheres -- Aggregates -- Colloids -- Electromagnetic fields -- Fractals -- Nonlinear optics -- Sampling -- Spectroscopic analysis -- Silver
Аннотация: We present an experimental spectroscopic study of large random colloidal aggregates of silver nanoparticles undergoing local restructuring. We argue that such well-known phenomena as strong fluctuation of local electromagnetic fields, appearance of "hot spots" and enhancement of nonlinear optical responses depend on the local structure on the scales of several nanosphere diameters, rather than the large-scale fractal geometry of the sample. (c) 2006 American Institute of Physics.

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Krasnoyarsk State Tech Univ, Dept Phys & Engn, Krasnoyarsk 660028, Russia
Univ Penn, Dept Radiol, Philadelphia, PA 19104 USA
Univ Penn, Dept Bioengn, Philadelphia, PA 19104 USA
ИФ СО РАН
L. V. Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk 660036, Russian Federation
Department of Physics and Engineering, Krasnoyarsk State Technical University, Krasnoyarsk 660028, Russian Federation
Departments of Radiology and Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, United States

Доп.точки доступа:
Karpov, S. V.; Карпов, Сергей Васильевич; Gerasimov, V. S.; Герасимов, Валерий Сергеевич; Isaev, I. L.; Исаев, Иван Леонидович; Markel, V. A.
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Ignatchenko, V. A.
Effects of cross correlations between 1D and 3D inhomogeneities on the high-frequency susceptibility of superlattices / V. A. Ignatchenko, Y. I. Mankov // J. Exp. Theor. Phys. - 2006. - Vol. 102, Is. 4. - P. 625-635, DOI 10.1134/S106377610604011X. - Cited References: 29 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
ELASTIC MEDIUM THEORY
   3-DIMENSIONAL INHOMOGENEITIES
   PERIODIC MULTILAYERS
   SPIN-WAVES
   LOCALIZATION
   SPECTRUM
   SYSTEMS
   MEDIA
   DISORDER
Кл.слова (ненормированные):
Correlation methods -- Damping -- Function evaluation -- Wave equations -- Brillouin zone -- Distribution function -- Random variables -- Superlattices
Аннотация: Cross Correlations between components of a mixture of one-dimensional (I D) and three-diniensional (3D) inhomogenetics are described by introducing a distribution function taking into account correlations between absolute values of two random variables in the absence of correlations between the variables themselves. This distribution function is used for derivation and analysis of the superlattice correlation function containing a mixture of cross-correlated 1D and 3D in homogeneitics. The effect of such inhomogeneities on the high-frequency susceptibility at the edge of the first Brillouin zone of the superlattice is investigated. It is shown that positive cross correlations partly suppress the effect of a mixture of 1D and 3D inhomogeneities on the wave spectrum: the gap at the boundary of the Brillouin zone increases, and wave damping decreases as compared to the effect produced by a mixture of 1D and 3D inhomogeneities in the absence of cross correlations. Negative cross correlations lead to the opposite effect: the gap decreases and wave damping increases. Cross correlations also lead to the emergence of new resonance effects: a narrow dip or a narrow peak at the center of the band gap (depending on the sign of the correlation factor).

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Держатели документа:
Russian Acad Sci, Kirenskii Inst Phys, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Mankov, Y. I.; Игнатченко, Вальтер Алексеевич
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10.

Ignatchenko, V. A.
Effect of the correlation properties of one- and three-dimensional inhomogeneities on the high-frequency magnetic susceptibility of sinusoidal superlattices / V. A. Ignatchenko, Y. I. Mankov // Phys. Solid State. - 2005. - Vol. 47, Is. 3. - P. 587-594, DOI 10.1134/1.1884725. - Cited References: 29 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
PERIODIC MULTILAYERS
   WAVE SPECTRUM
   SPIN-WAVES
   LOCALIZATION
   SYSTEMS
   DISORDER
Аннотация: The effect of one-(1D) and three-dimensional (3D) inhomogeneities on the high-frequency magnetic susceptibility at the boundary of the first Brillouin zone of a ferromagnetic superlattice is studied. The study is performed with an earlier developed method of random spatial modulation (RSM) of the superlattice period. In this method, structural inhomogeneities are described in terms of the random-phase model, in which the phase depends on three coordinates in the general case. The frequency spacing Delta v(m) between two peaks in the imaginary part of the averaged Green's function, which characterizes the gap width in the frequency spectrum at the boundary of the Brillouin zone, is calculated as a function of both the root-mean-square fluctuations gamma(i) and the correlation wavenumbers eta(i) of phase inhomogeneities (i = 1 and 3 for 1D and 3D inhomogeneities, respectively). The function Delta v(m)(gamma(1), eta(1)) for 1D inhomogeneities is shown to be symmetric with respect to inter- changing the variables gamma(1)(2) and eta(1), whereas the function Delta v(m)(gamma(3), eta(3)) for 3D inhomogeneities is strongly asym- metric with respect to interchanging gamma(3)(2) eta(3). This effect is associated with the difference in form between the correlation functions of 1D and 3D inhomogeneities and can be used to determine the dimensionality of inhomogeneities from the results of spectral studies of such superlattices. (c) 2005 Pleiades Publishing, Inc.

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Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Akademgorodok, 660036, Russian Federation

Доп.точки доступа:
Mankov, Y. I.; Игнатченко, Вальтер Алексеевич
}
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