107 research outputs found
Erratum: a synonymous variant in GCK gene as a cause of gestational diabetes mellitus (diabetes mellitus. 2019;22(2). Doi: 10.14341/dm9938)
No full textAn erratum on «A synonymous variant in GCK gene as a cause of gestational diabetes mellitus» by Natalya A. Zubkova, Petr M. Rubtsov, Liudmila I. Ibragimova, Nina A. Makretskaya, Evgeny V. Vasiliev, Vasily M. Petrov, Anatoly N. Tiulpakov (2019). Diabetes mellitus. 22(2). doi: 10.14341/DM9938An error was made in the list of authors: Fatima F. Burumkulova was not indicated as author of this article. The correct list of authors: Natalya A. Zubkova, Petr M. Rubtsov, Fatima F. Burumkulova, Liudmila I. Ibragimova, Nina A. Makretskaya, Evgeny V. Vasiliev, Vasily M. Petrov, Anatoly N. Tiulpakov.The editorial board apologize for this error and state that this does not change the scientific conclusions of the article in any way.The original article has been updated
Quantum many-body adiabaticity, topological Thouless pump and driven impurity in a one-dimensional quantum fluid
No full textThe quantum adiabatic theorem states that a driven system can be kept arbitrarily close to the instantaneous eigenstate of its Hamiltonian if the latter varies in time slowly enough. When it comes to applying the adiabatic theorem in practice, the key question to be answered is how slow slowly enough is. This question can be an intricate one, especially for many-body systems, where the limits of slow driving and large system size may not commute. Recently we have shown how the quantum adiabaticity in many-body systems is related to the generalized orthogonality catastrophe [arXiv 1611.00663, to appear in Phys. Rev. Lett.]. We have proven a rigorous inequality relating these two phenomena and applied it to establish conditions for the quantized transport in the topological Thouless pump. In the present contribution we (i) review these developments and (ii) apply the inequality to establish the conditions for adiabaticity in a one-dimensional system consisting of a quantum fluid and an impurity particle pulled through the fluid by an external force. The latter analysis is vital for the correct quantitative description of the phenomenon of quasi-Bloch oscillations in a one-dimensional translation invariant impurity-fluid system.</p
Viruses and civilizations. The new impact of biocataclysms on the evolution of sociocultural models and civilization projects
No full textThe article considers the situation associated with the coronavirus pandemic in Russia and in the world as a whole and its possible consequences for the economy, politics, and sociocultural processes. The author analyzes the publications that have appeared recently and focused on questions about what the world expects after the end of the pandemic. In the reviews of the topic “The World after the Pandemiс” some optical defects typical of technocratic positivism were revealed. The reduction of levels of psychohistory and psychoideology leads to an underestimation of the scale of the disaster and the breakdown of communication between the regulator and the population. The “historical size” of events of this kind is set by the great plague epidemics in their influence on the way out of the Middle Ages into the Modern civilization. Such comparability confirms the appeal to images of emptiness in art and philosophy. The symbolism of “life on pause” speaks about the scale and possible irreversibility of changes, at least in local civilizations. Thus, the coronacrisis undermines the foundations of the resource society and the “civilization of oil” – the basis of the Russian political ethnonarcissism. A closed circuit with positive feedback is formed, its swing is fraught with landslide changes and risks with unacceptable damage. Tough clashes with reality strike at the regimes of simulation, political postmodernism in general. Ideas about “political eschatology” and plurality of interpretations of the concept of civilization allow us to discuss the prospects of transformation of the civilizational project in Russia
ACTIVE INTERMEDIATES IN THE CHAIN OXIDATION OF DICHLOROSILANE
No full text D. Sameith, J.P. Monch, H.J. Tiller et al. Chem.Phys.Lett, 128, 483, (1986) V.V. Azatyan, A.S. Lukashev, S.S. Nagorny et al. Kinel Catal., 34, 404, (1993) V.P. Karpov, N.M. Rubtsov O.T. Ryzhkov et al. Chem.Phys.Reports, 17, 73, (1998)Author Institution: Russia, Institute for Structural Macrokinetics RAS, Moscow regionDichlorosilylenes have been detected in the branching chain reaction of the oxidation of dichlorosilane with for the first time. The emission spectra of rarified flame were recorded under static and flow conditions over the pressure range Torr and over the following intervals : in the range 220-280 nm in the range ; the continious emission caused by the blackbody radiation from the solid particles over 400nm. The intensive absorption in the range of 210-260 nm has been also observed under static conditions. The simultaneous recording of the mentioned intermediates as well as conductivity (revealed ) during the single ignition has been performed. The peaks of the signals are staggered in time. The first peak in time is (coincident with SiO), the second is the absorption peak, the third is the visible emission coincident with conductivity peak. 10\% additives (to fuel) of have a decreasing effect only on the absorption, visible emission and conductivity. It means that the absorbing intermediates contain Si-O bonds since has influence mainly on aerosol
Modal analysis of additive manufactured carbon fiber reinforced polymer composite: Experiment and modeling
No full textMechanical strength of multicomponent reinforced composite structures at different temperatures
No full textTribological dry sliding behavior of chopped carbon fiber reinforced polyetheretherketone
No full textManin Matrices for Quadratic Algebras
No full textWe give a general definition of Manin matrices for arbitrary quadratic algebras in terms of idempotents. We establish their main properties and give their interpretation in terms of category theory. The notion of minors is generalised for a general Manin matrix. We give some examples of Manin matrices, their relations with Lax operators, and obtain the formulae for some minors. In particular, we consider Manin matrices of the types , , and introduced by A. Molev and their relation with Brauer algebras. Infinite-dimensional Manin matrices and their connection with Lax operators are also considered.The author is grateful to A. Chervov, V. Rubtsov, An. Kirillov, A. Isaev, and A. Molev for useful discussions and advice. The author would like to thank anonymous referees for their attentive reading and numerous useful comments and remarks
Two stage decoherence of optical phonons in long oligomers
No full textIntramolecular energy transport is generally responsible for chemical energy
balance in molecular systems. The transport is fast and efficient if energy is
transferred by optical phonons in periodic oligomers, but its efficiently is
limited by decoherence emerging due to anharmonic interactions with acoustic
phonons. We show that in the most common case of the optical phonon band being
narrower than the acoustic bands decoherence takes place in two stages. The
faster stage involves optical phonon multiple forward scattering due to
absorption and emission of transverse acoustic phonons, i. e. collective
bending modes with a quadratic spectrum; the transport remains ballistic and
the speed can be altered. The subsequent slower stage involves phonon
backscattering in multiphonon processes involving two or more acostic phonons
resulting is a switch to diffusive transport. If the initially excited optical
phonon possesses a relatively small group velocity, then its equilibration in
the first stage is accompanied by its acceleration due to its transitions to
states propagating faster. This theoretical expectation is consistent with the
recent measurements of optical phonon transport in alkane chains, accelerating
with increasing the chain length.Comment: 21 page, 10 figure
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