2,029 research outputs found
Next-to-next-to-leading order evolution of polarized parton densities in the Larin scheme
No full textIn many calculations involving polarized twist-2 parton densities to higher order in the strong coupling constant one uses the Larin scheme to describe chiral effects in dimensional regularization. Upon forming observables, the scheme dependence cancels. Still one needs a corresponding regularization scheme to compute the contributing building blocks, like massless and massive Wilson coefficients, as well as the massive three-loop operator matrix elements used in the variable flavor number scheme. These are matched to the evolved parton distribution functions in the Larin scheme. Starting with suitable input distributions we provide the solution of scale evolution of the different polarized parton distribution functions in Bjorken x space for a wide range of virtualities Q2 in the Larin scheme, at next-to-leading, at next-to-next-to-leading order for the first time. We also illustrate the deviation between the parton distributions in the Larin and MS¯ schemes numerically
Next-to-Next-to-Leading Order Evolution of Polarized Parton Densities in the Larin Scheme
No full textIn many calculations involving polarized twist-2 parton densities to higher
order in the strong coupling constant one uses the Larin scheme to describe
chiral effects in dimensional regularization. Upon forming observables, the
scheme dependence cancels. Still one needs a corresponding regularization
scheme to compute the contributing building blocks, like massless and massive
Wilson coefficients, as well as the massive 3-loop operator matrix elements
used in the variable flavor number scheme. These are matched to the evolved
parton distribution functions in the Larin scheme. Starting with suitable input
distributions we provide the solution of scale evolution of the different
polarized parton distribution functions in Bjorken space for a wide range
of virtualities in the Larin scheme, at next-to-leading, and to
next-to-next-to-leading order for the first time. We also illustrate the
deviation between the parton distributions in the Larin and
schemes numerically.Comment: 13 pages Latex, 9 Figures, ancillary file
Combinatorial Chemistry Review
No full textThe Combinatorial Chemistry Review website was created by Dr. Oleg Larin at the M. V. Lomonosov Moscow State Academy of Fine Chemical Technology "to provide a basic introduction to the field of combinatorial chemistry describing the development of major techniques and some applications." After reading an introduction discussing the goals, principles, and applications of combinatorial synthesis, users can find more in-depth descriptions and educational figures of the polymers and linkers related to the solid phase combinatorial chemistry. The comprehensive website supplies a discussion of the methods, a helpful glossary of terms, and more
ANALYSIS OF THE FREQUENCY SHIFTS IN IR SPECTRA OF CO ADSORBED ON THE A ZEOLITE
No full text1. A.V. Larin, E. Cohen de Lara, J. Chem. Phys. 101, 8130, (1994). 2. A. V. Larin, chem. Phys. Lett. 232, 383, (1995).Author Institution: Moscow State University, Leninskie Gori, B-234, 119899, Moscosw, RussiaThe zeolite A models are found via a fitting of vibrational frequency shift and a band splitting in IR spectra of adsorbed on the same zeolite. The different models distinguish in the oxygen charges of the different crystallographic sites, charge of Cation. Two peak positions are found in accordance with experimental CO spectra. The peak position changes are discussed due to an effective molecular size variations for the models found. The respective comparison will be presented. Appications to CO molecule of a simplified method of the frequency shift calculation1 earily proposed for molecule will be given. A discussion of an influence of the CO internuclear potential choice on the frequency shift estimation will be presented as it was given for
Measuring Prefrontal Hemodynamic Responses Using Functional Near-Infrared Spectroscopy During Mobility for a Child With Motor Impairment
No full textAbstract
Date Presented 3/31/2017
This study used functional near-infrared spectroscopy (fNIRS) to identify changes in cognitive workload in a child with motor impairment during experiences with robot-assisted mobility. The study provides preliminary support for using fNIRS to measure cognitive workload in novel motor tasks.
Primary Author and Speaker: Kelly Cusick
Additional Authors and Speakers: Alexandra DiStasi, Stephanie Holowinski, Olivia Fitzpatrick
Contributing Authors: Megan Davis, Melody H. Wallace, Sharon A. Stansfield, Carole Dennis, Hélène M. Larin, Nancy Rader, Judith Pena-Shaff</jats:p
Multiscale computer simulation of polymer nanocomposites based on thermoplastics
No full textA literature review is presented on a multiscale approach to the simulation of nanocomposites based on thermoplastic polymers that includes calculations using quantum-chemical methods and molecular dynamics simulations with the use of full-atomic and mesoscopic models. Common problems arising during the multiscale simulation of thermoplastic nanocomposites and the ways to solve them are discussed. The results of studies of the structural, thermal, and mechanical properties of thermoplastic nanocomposites obtained via the simulation with consideration for the detailed chemical structures of components are given
Mechanical Properties of a Polymer at the Interface Structurally Ordered by Graphene
No full textIn this study, for the first time, molecular dynamics simulations helped identifying the substantial mechanical properties changes of a crystallizable polyimide related to the ordering of the polymer chains along the graphene surface. It is demonstrated that graphene-induced polymer ordering at the nanofiller-polymer interface leads to mechanical properties exceeding those of the unfilled amorphous polymer. Moreover, simulation results confirm that the mechanical properties anisotropy is related to the polymer ordering anisotropy induced by graphene-polymer interactions. (Graph Presented)
О лексикографическом методе изучения идиостиля (материалы одноязычных и двуязычных словарей писателя)
No full textThe author presents an overview of bibliography dealing with Polish and Russian writer’s dictionaries. He shows a concept of lexicographic research on idiostyles proposed by B.A. Larin. He also discusses the issues of creating monolingual and bilingual writer’s language dictionaries
Magnetoelastic behavior of glass-covered amorphous ferromagnetic microwire
No full textParticular aspects concerning the magnetoelastic behavior of an Fe-rich glass-covered amorphous ferromagnetic microwire (diameter about 20 μm) are reported about its as-prepared state as well as after various heating treatments. The main feature of such behavior is that related with the bistable behavior exhibited by this microwire. Magnetization process takes place by a single and large Barkhausen jump at a given applied field. For the as-prepared material, the value of this switching field (H* ≈ 112 Am-1) is about one order of magnitude larger than that reported for Fe-rich amorphous wires with diameter of about 125 μm (H* ≈ 8 Am-1). The effect of the thermal treatment as well as the stress dependence of H* for as-obtained and treated microwire are also reported and discussed in terms of the stress distribution within the microwire.Manuscript received September 10, 1994; revised January 10, 1996. This work was supported in part by the Spanish CICYT under Project MAT95/0273, MAT93/0437, and MAT93/0691 and by Excma Diputación Foral de Guipúzcoa. J. González and N. Murillo are with the Departamento de Física de Materiales, Facultad de Química, Universidad del Pais Vasco, 20080 San Sebastián, Spain. V. Larin is with “Amotec” S.R.L., Kishinev, 277038, Rep. Moldova. J. M. Barandiarán is with the Departamento de Electricidad y Electrónica, Universidad del Pais Vasco, 48080 Bilbao, Spain. M. Vázquez and A. Hernando are with the Instituto de Magnetismo Aplicado RENFE-UCM, 28230 Las Rozas, Madrid, Spain. Publisher Item Identifier S 0018-9464(97)00672-9.Peer reviewe
British Economists, Mercantilism and International Trade (XVII – XVIII Centuries)
No full textPart of "Discussion: Great Britain and Latin-american Independance War" M. Bain, N. Ivanov , V. Kazakov , E. Larin and I. SelivanovaPeer reviewe
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