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71.
Sublattice-Spin Coherent Contribution to the Conductivity of Graphene Within Quasiclassical Approach
The charge carriers in graphene are characterised by an additional quantum degree of freedom—sublattice index—which, in turn,
is entangled with the quasiparticle momentum. We propose a quasiclassical model which describes kinetics of such particles.
Solving accordingly modified Boltzmann kinetic equation we found a way how to distinguish between samples with the domination
of short and long range scatterers from the conductivity measurements. The model proposed explains recent transport experiments
with chemically doped as well as suspended graphene. 相似文献
72.
Sorokin V. N. Tsyplikhin A. I. 《Journal of Communications Technology and Electronics》2010,55(12):1561-1574
Journal of Communications Technology and Electronics - The speaker verification is based on variations in formant frequencies at stationary fragments and transient processes of vowels, the spectral... 相似文献
73.
74.
75.
V. M. Poplavksii A. D. Efanov A. V. Zhukov S. G. Kalyakin A. P. Sorokin Yu. S. Yuriev 《Atomic Energy》2010,108(4):296-302
Thermohydraulic studies of reactor facilities with fast reactors are complex experimentally and computationally. Extensive
experimental data are obtained on the velocity and temperature profiles, hydrodynamic resistance and heat emission, initial
heat section, and interchannel mixing of the coolant in the fuel assemblies. These are used to develop engineering methods
of performing thermohydraulic calculations of fuel assemblies as well as computational compute codes. The particulars of the
hydrodynamics and heat transfer in intermediate heat exchangers and steam generators of reactor facilities with fast reactors
are studied. This has made it possible to validate their thermohydraulic characteristics. 相似文献
76.
A. P. Stepovik E. Yu. Shamaev D. V. Khmel’nitskii M. M. Armanov A. A. Kondrat’ev I. A. Sorokin E. V. Zavolokov 《Journal of Communications Technology and Electronics》2018,63(3):264-269
Effect of the number of ultrashort ultrabroadband pulses with a repetition rate of 1 kHz on malfunctioning of microcontroller in radio transparent housing is studied when the device is irradiated using pulse trains at a pulse duration of about 10–10 s and radiation frequencies ranging from 1 to 30 GHz. The radiation is received by internal conducting stripes that connect the electronic circuit and external outputs. The malfunction probability is determined by the number of pulses in the pulse train, pulse number, and electric field strength. It is shown that malfunctioning is predominantly caused by the leading pulses in the pulse train. 相似文献
77.
Modern computerized automation systems for thermal power engineering and prospects for their future development 总被引:1,自引:0,他引:1
O. V. Serdyukov R. V. Nestulya S. A. Kulagin A. N. Skvortsov A. I. Timoshin A. A. Doroshkin I. V. Sorokin 《Thermal Engineering》2010,57(10):880-884
The possibility of using the Ethernet network as a network for the lower (controller) level of a computerized automation system
is considered. A new term “distributed (multicore) control environment” is introduced. The architecture of an Ethernet-based
distributed control environment is described and an example of its implementation in the Tornado-N computerized automation
system is given. 相似文献
78.
Kholdeeva Oxana A. Ivanchikova Irina D. Maksimchuk Nataliya V. Melgunov Maxim S. Chang Jong-San Guidotti Matteo Shutilov Alexei A. Zaikovskii Vladimir I. 《Topics in Catalysis》2014,57(17):1377-1384
Catalytic properties of Ti-containing porous solids were compared in the oxidation of 2,3,6-trimethylphenol (TMP) with H2O2 to produce 2,3,5-trimethyl-1,4-benzoquinone (TMBQ, vitamin E key intermediate). Mesoporous titanium–silicates with di(oligo)nuclear Ti centers, metal–organic framework MIL-125 and amorphous TiO2 demonstrated 100 % selectivity toward TMBQ. Titanium–silicates prepared by evaporation-induced self-assembly revealed superior performance in terms of product yield and catalyst reusability.
相似文献79.
Three-layer flow membrane system on a microchip for investigation of molecular transport 总被引:3,自引:0,他引:3
Surmeian M Slyadnev MN Hisamoto H Hibara A Uchiyama K Kitamori T 《Analytical chemistry》2002,74(9):2014-2020
A stable three-layer flow system, water/organic solvent/water, has been successfully applied for the first time in a microchannel to get rapid transport through an organic liquid membrane. In the continuous laminar flow region, the analyte (methyl red) was rapidly extracted across the microchannel from the donor to the acceptor phase through the organic solvent phase (cyclohexane). Thermal lens microscopy was used to monitor the process. The thickness of the organic phase, sandwiched by the two aqueous phases, was approximately 64 microm, and it was considered as a thin liquid organic membrane. Permeability studies showed the effects of molecular diffusion, layer thickness, and organic solvent-water partition coefficient on the molecular transport. In the microchip, complete equilibration was achieved in several seconds, in contrast to a conventionally used apparatus, where it takes tens of minutes. The thickness of the organic and aqueous boundary layers was defined as equal to the microchannel dimensions, and the organic solvent-water partition coefficient was determined on a microchip using the liquid/liquid extraction system. Experimental data on molecular transport across the organic membrane were in agreement with the calculated permeability based on the three-compartment water/organic solvent/water model. This kind of experiment can be performed only in a microspace, and the system can be considered as a potential biological membrane for future in vitro study of drug transport. 相似文献
80.
We present a correction to the paper, “Approximation algorithms for shop scheduling problems with minsum objective” (Journal of Scheduling 2002; 5:287–305) by Queyranne and Sviridenko. This correction provides a correct derivation of its 2eρ approximation result.
Wenhua Li and Jinjiang Yuan: Project supported by NNSFC (Grant 10371112) and NSFHN (Grant 0411011200).
Maurice Queyranne: Supported by research grants from NSERC, the Natural Sciences and Engineering Research Council of Canada. 相似文献