Moscow, Russia

A. N. Kosygin Moscow State Textile University was formed as Moscow State Textile Institute in 1919. It is one of the oldest and institutes for higher studies in textiles in Russia.In 1981, the institute was named in honor of Soviet Premier Alexei Kosygin, who died the previous year and whose profession was in the textile industry. The institute was upgraded to "Academy" in 1990. It was renamed to A. N. Kosygin Moscow State Textile Academy.Nine years later, the Academy was approved as University and renamed as the A. N. Kosygin Moscow State Textile University in 1999.The university has its own complex. It comprises 8 different korpuc at the center of the city of Moscow, Russia. The teaching staff at the university is above 560, 110 out of them are Ph.D. and Professors.The university has the followings major departments:Technology and Production ManagementChemical Technology and EcologyWeaving, Information TechnologyAutomation and EnergyEconomics and ManagementFashion DesigningThe university offers specialization, masters and bachelors in 18 different categories. University has 41 departments, where it offer studies to almost 6700 students. The university has 110 laboratories and 100 auditoriums. The university has its own sports hall, club and three hostels.The University has served as a center of education for students from Russia and from all over the world. Many students from China, Pakistan, Morocco, Iran, Ghana and India have completed their higher education at the university. The university has a one-room mosque which was built by Muslim students of the university in the hostel at Shablovskaya. The 7th floor of the university hostel is assigned to foreign students. Wikipedia.


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Sacepe B.,Joseph Fourier University | Sacepe B.,Weizmann Institute of Science | Sacepe B.,CNRS Neel Institute | Dubouchet T.,Joseph Fourier University | And 6 more authors.
Nature Physics | Year: 2011

The most profound effect of disorder on electronic systems is the localization of the electrons transforming an otherwise metallic system into an insulator. If the metal is also a superconductor then, at low temperatures, disorder can induce a pronounced transition from a superconducting into an insulating state. An outstanding question is whether the route to insulating behaviour proceeds through the direct localization of Cooper pairs or, alternatively, by a two-step process in which the Cooper pairing is first destroyed followed by the standard localization of single electrons. Here we address this question by studying the local superconducting gap of a highly disordered amorphous superconductor by means of scanning tunnelling spectroscopy. Our measurements reveal that, in the vicinity of the superconductor-insulator transition, the coherence peaks in the one-particle density of states disappear whereas the superconducting gap remains intact, indicating the presence of localized Cooper pairs. Our results provide the first direct evidence that the superconductor-insulator transition in some homogeneously disordered materials is driven by Cooper-pair localization. © 2011 Macmillan Publishers Limited. All rights reserved.


Dmitriev D.V.,Moscow State Textile University | Krivnov V.Ya.,Moscow State Textile University
Physical Review B - Condensed Matter and Materials Physics | Year: 2012

Low-temperature magnetic properties of both classical and quantum dimerized ferromagnetic spin chains are studied. It is shown that at low temperatures the classical dimerized model reduces to the classical uniform model with the effective exchange integral J 0=J(1-δ2), where δ is the dimerization parameter. The partition function and spin correlation function are calculated by means of mapping to the continuum limit, which is justified at low temperatures. The quantum model is studied using the Dyson-Maleev representation of the spin operators. It is shown that in the long-wavelength limit the Hamiltonian of the quantum dimerized chain reduces to that of the uniform ferromagnetic chain with the effective exchange integral J 0=J(1-δ2). This fact implies that the known equivalence of the low-temperature magnetic properties of classical and quantum ferromagnetic chains remains for the dimerized chains. The considered model is generalized to include the next-neighbor antiferromagnetic interaction. © 2012 American Physical Society.


Nikolay T.,Korea Advanced Institute of Science and Technology | Larina L.,Korea Advanced Institute of Science and Technology | Shevaleevskiy O.,Moscow State Textile University | Ahn B.T.,Korea Advanced Institute of Science and Technology
Energy and Environmental Science | Year: 2011

To improve the conversion efficiency of dye-sensitized solar cells (DSSCs) it is necessary to understand the electronic structure of the TiO 2-dye-electrolyte interface in detail. A sturdy junction at the interface can be provided by modifying the electronic structure of the TiO 2 electrode with Nb doping. The Nb-doped TiO2 was prepared by a sol-gel method followed by a hydrothermal treatment; the Nb content was varied from 0.5 to 3.0 mol%. The X-ray photoelectron spectroscopy showed that the Fermi level of TiO2 electrode shifted away from the conduction band minimum (CBM) when the Nb content is low (≤1.5 mol%) and shifted toward the CBM when the Nb content is high (≥2.5 mol%). The shift of Fermi level with low Nb doping was due to the passivation of the oxygen vacancies at the TiO2 nanoparticle surface. Intraband states were formed when dopant content was 1.5 and 2.5 mol%. We have found that the photovoltaic parameters of DSSCs based on doped TiO2 sensitized with a cis-[Ru(dcbpyH) 2(NCS)2](NBu4)2, N719 dye, are closely related to the electronic structure of the Nb-doped TiO2 electrode. The changes of short circuit current and open circuit voltage of DSSCs were explained in relation to the electronic structure of the TiO 2 electrode. The best efficiency of 8.0% was demonstrated by DSSCs with 2.5 mol% Nb-doped TiO2. © 2011 The Royal Society of Chemistry.


Manevitch L.I.,Moscow State Textile University | Smirnov V.V.,Moscow State Textile University
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics | Year: 2010

We demonstrate that the modulation instability of the zone-boundary mode in a finite (periodic) Fermi-Pasta-Ulam chain is the necessary but not sufficient condition for the efficient energy transfer by localized excitations. This transfer results from the exclusion of complete energy exchange between spatially different parts of the chain, and the excitation level corresponding to that turns out to be twice more than threshold of zone-boundary mode's instability. To obtain this result one needs in far going extension of the beating concept to a wide class of finite oscillatory chains. In turn, such an extension leads to description of energy exchange and transition to energy localization and transfer in terms of effective particles and limiting phase trajectories. The effective particles appear naturally when the frequency spectrum crowding ensures the resonance interaction between zone-boundary and two nearby nonlinear normal modes, but there are no additional resonances. We show that the limiting phase trajectories corresponding to the most intensive energy exchange between effective particles can be considered as an alternative to nonlinear normal modes, which describe the stationary process. © 2010 The American Physical Society.


Bogdanov L.V.,Moscow State Textile University
Journal of Physics A: Mathematical and Theoretical | Year: 2010

Using the Lax-Sato formulation of the Manakov-Santini hierarchy, we introduce a class of reductions such that the zero-order reduction of this class corresponds to the dKP hierarchy, and the first-order reduction gives the hierarchy associated with the interpolating system introduced by Dunajski. We present the Lax-Sato form of a reduced hierarchy for the interpolating system and also for the reduction of arbitrary order. Similar to the dKP hierarchy, the Lax-Sato equations for L (the Lax function) split from the Lax-Sato equations for M (the Orlov function) due to the reduction, and the reduced hierarchy for an arbitrary order of reduction is defined by Lax-Sato equations for L only. A characterization of the class of reductions in terms of the dressing data is given. We also consider a waterbag reduction of the interpolating system hierarchy, which defines (1+1)-dimensional systems of hydrodynamic type. © 2010 IOP Publishing Ltd.


Dmitriev D.V.,Moscow State Textile University | Krivnov V.Y.,Moscow State Textile University
Physical Review B - Condensed Matter and Materials Physics | Year: 2010

We study the classical anisotropic ferromagnetic spin chain with frustration. The behavior of soliton and kink solutions in the vicinity of the ground-state phase transition from the ferromagnetic to the spiral phase is studied. The dependence of the soliton energy on small anisotropy parameter is established using scaling estimates and numerical minimization of the energy functional. Conditions of the existence of the solitons are determined. It is shown that solitons survive in the spiral phase though with some restrictions on their size. A comparison of the energies of the classical solitons and the bound magnon complexes in the quantum model shows the functional similarity between them. The influence of the finite-size effects on the soliton states is studied and it is shown that the localized solitons originate from the uniform state when the system size exceeds some critical value depending on the anisotropy. © 2010 The American Physical Society.


Dmitriev D.V.,Moscow State Textile University | Krivnov V.Ya.,Moscow State Textile University
Physical Review B - Condensed Matter and Materials Physics | Year: 2010

Low-temperature thermodynamics of the classical frustrated ferromagnetic spin chain near the ferromagnet-helimagnet transition point is studied by means of mapping to the continuum limit. The calculation of the partition function and spin-correlation function is reduced to quantum problem of a particle in potential well. It is shown that exactly at the transition point the correlation length behaves as T-1/3 and the magnetic susceptibility diverges as T-4/3 in the low-temperature limit. Corresponding numerical factors for the correlation length and the susceptibility is calculated. It is shown that the low-temperature susceptibility in the helical phase near the transition point has a maximum at some temperature. Such behavior as well as the location and the magnitude of the maximum as a function of deviation from the transition point are in agreement with that observed in several materials described by the quantum s=1/2 version of this model. © 2010 The American Physical Society.


Semenov S.N.,Moscow State Textile University
EPL | Year: 2012

The material transport equations derived by non-equilibrium thermodynamics are used to describe the material transport in binary non-isothermal molecular systems. The chemical potentials of the components used in the equations are calculated using statistical mechanics. As the material transport equations contain chemical potentials at constant pressure, the local pressure distribution necessary in calculations is obtained using the condition of the local thermodynamic equilibrium around the selected molecular particle. The Laplace contribution to the local pressure distribution within the layer of the liquid around the particle is accounted. The calculations yield the results equivalent to previous approaches and add new terms to the Soret coefficient, which are related to the difference in the translational and rotational thermal motion between the molecules. The kinetic contribution to thermodiffusion explains the isotope thermodiffusion effect, the role of the molecular symmetry, and the sign change in thermodiffusion observed in binary systems. The proposed theory describes thermodiffusion in binary molecular systems with a limited miscibility. © 2012 Europhysics Letters Association.


Ruban V.P.,Moscow State Textile University
European Physical Journal: Special Topics | Year: 2010

The recently suggested theoretical model for highly nonlinear potential long-crested water waves is discussed, where weak three-dimensional effects are included as small corrections to exact two-dimensional equations written in terms of the conformal variables [V. P. Ruban, Phys. Rev. E 71, 055303(R) (2005)]. Some numerical results based on this theory are presented, which describe spontaneous formation of rogue waves on the deep water for different initial conditions. In particular, the given numerical examples describe: (i) nonlinear stage of the modulational instability, (ii) breathing rogue wave in a random wave field, and (iii) freak wave in a weakly crossing sea state. © 2010 EDP Sciences and Springer.


Fomin A.I.,Moscow State Textile University
Russian Journal of Mathematical Physics | Year: 2012

Linear differential operators with complex-valued infinitely differentiable coefficients, linear homogeneous systems of differential equations, and modules over algebras of scalar linear differential operators are considered. Linear differential changes of variables and homomorphisms of special quotient modules (differential homomorphisms) generated by these changes are studied. In terms of differential homomorphisms, relationships between Maxwell equations and equations of electromagnetic potential and between Dirac equations and the Klein-Gordon system of independent equations are described. It is proved that all ordinary nondegenerate linear homogeneous differential equations of some common order and the homogeneous normal systems of the same common order are differentially isomorphic. © 2012 Pleiades Publishing, Ltd.

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