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Fibroin - chitosan polyelectrolyte complexes are studied by X-ray diffraction, IR spectroscopy, and scanning calorimetry. Mechanical characteristics and the swellability of the blend films at various pHs are examined.__________Translated from Zhurnal Prikladnoi Khimii, Vol. 78, No. 3, 2005, pp. 493–497.Original Russian Text Copyright © 2005 by Sashina, Novoselov. 相似文献
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Physics of Atomic Nuclei - A model of a neural-network-like quantum-mechanical system is considered. The role of neurons is played by quantum-mechanical particles which evolve under the action of... 相似文献
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A. S. Novoselov A. M. Rodin S. Motycak A. V. Podshibyakin L. Krupa A. V. Belozerov V. Yu. Vedeneyev A. V. Gulyaev A. V. Gulyaeva J. Kliman V. S. Salamatin S. V. Stepantsov E. V. Chernysheva S. A. Yukhimchuk A. B. Komarov D. Kamas 《Physics of Particles and Nuclei Letters》2016,13(5):595-597
The results of the development and the general information about the data acquisition system which was recently created at the MASHA setup (Flerov laboratory of nuclear reactions at Joint institute for nuclear research) are presented. The main difference from the previous system is that we use a new modern platform, National Instruments PXI with XIA multichannel high-speed digitizers (250 MHz 12 bit 16 channels). At this moment system has 448 spectrometric channels. The software and its features for the data acquisition and analysis are also described. The new DAQ system expands precision measuring capabilities of alpha decays and spontaneous fission at the focal plane position-sensitive silicon strip detector which, in turn, increases the capabilities of the setup in such a field as low-yield registration of elements. 相似文献
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S. V. Troshenkova E. S. Sashina N. P. Novoselov K. -F. Arndt 《Russian Journal of General Chemistry》2010,80(3):501-506
Diluted solutions of cellulose and hydroxypropylcellulose in 1-ethyl-3-methylimidazolium acetate were studied by the method
of static light scattering. Mean molecular masses and the size of the particles of the studied polymers in solution, as well
as the values of the second virial coefficient are reported. 相似文献
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N. P. Novoselov E. S. Sashina A. P. Kuznetsova V. E. Petrenko 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2007,81(10):1706-1708
The literature data and our quantum-chemical electron density distribution calculations were compared with experiment for the N-methylmorpholine-N-oxide molecule 相似文献
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Cristian E. Lacey Alex G. Novoselov Michael E. Mueller 《Proceedings of the Combustion Institute》2021,38(2):2673-2680
Reduced-order manifold approaches to turbulent combustion modeling traditionally involve precomputation of manifold solutions and pretabulation of the thermochemical database versus a small number of manifold variables. However, additional manifold variables are required as the complexity of turbulent combustion processes increases through consideration of, for example, multi-modal, non-adiabatic, or non-isobaric combustion, or combustion featuring multiple and/or inhomogeneous inlets. This increase in the number of manifold variables comes with an increase in the computational cost of precomputing a greater number of manifold solutions, most of which are never actually utilized in a CFD calculation. The memory required to store the pretabulated high-dimensional thermochemical database also increases, practically limiting the complexity of manifold-based combustion models. In this work, a new In-Situ Adaptive Manifolds (ISAM) approach is developed that overcomes this limitation by combining ‘on-the-fly’ calculation of manifold solutions with In-Situ Adaptive Tabulation (ISAT), enabling the use of more complex manifold-based turbulent combustion models. The performance of ISAM is evaluated via LES of turbulent nonpremixed jet flames with both hydrogen and hydrocarbon fuels. A performance assessment indicates that the computational overhead associated with ISAM compared to pretabulation ranges from negligible up to a factor of two, with most of this overhead associated with convolution of the thermochemical state against a presumed subfilter PDF. In addition, the memory requirements of ISAM are more than two orders of magnitude less than conventional tabulation. These results demonstrate the potential for ISAM to accommodate significantly more complex manifold-based combustion models. 相似文献
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Luican A Li G Reina A Kong J Nair RR Novoselov KS Geim AK Andrei EY 《Physical review letters》2011,106(12):126802
We report high magnetic field scanning tunneling microscopy and Landau level spectroscopy of twisted graphene layers grown by chemical vapor deposition. For twist angles exceeding ~3° the low energy carriers exhibit Landau level spectra characteristic of massless Dirac fermions. Above 20° the layers effectively decouple and the electronic properties are indistinguishable from those in single-layer graphene, while for smaller angles we observe a slowdown of the carrier velocity which is strongly angle dependent. At the smallest angles the spectra are dominated by twist-induced van Hove singularities and the Dirac fermions eventually become localized. An unexpected electron-hole asymmetry is observed which is substantially larger than the asymmetry in either single or untwisted bilayer graphene. 相似文献