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21.
V. M. Chernov M. V. Leont’eva-Smirnova E. M. Mozhanov N. S. Nikolaeva A. N. Tyumentsev N. A. Polekhina I. Yu. Litovchenko E. G. Astafurova 《Technical Physics》2016,61(2):209-214
The structure of EK-181 (RUSFER-EK-181, low-activation) and ChS-139 12% Cr ferritic–martensitic steels is investigated and their mechanical properties are tested after long-term (13500 h) aging at 450 and 620°C. The microstructure of the steels exhibits a high thermal stability, which provides the retention of their initial short-term mechanical properties at test temperatures. 相似文献
22.
It is shown that the occurrence of metallic conductivity in polymers is due to their electrification. In particular, the current density depends on the electron work function of metallic electrodes which are in contact with the polymer. 相似文献
23.
V. I. Kodolov I. N. Shabanova L. G. Makarova N. V. Khokhryakov A. P. Kuznetsov O. A. Nikolaeva J. Kerene G. I. Yakovlev 《Journal of Structural Chemistry》2001,42(2):215-219
This paper deals with X-ray photoelectron and electron microscopy studies of the structure of carbon–metal-containing micro- and nanotubulenes. Ab initio quantum-chemical calculations were performed to analyze the possibility and mechanism of tubulene formation. 相似文献
24.
Yu. V. Patrushev O. A. Nikolaeva V. N. Sidelnikov 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2010,84(5):871-875
A method for preparing a multicapillary column with a porous layer based on the styrene-divinylbenzene copolymer has been
developed. The column makes it possible to quickly separate C1–C4 hydrocarbons and oxygen-containing compounds. The main chromatographic properties of the columns were studied. 相似文献
25.
S. V. Saikova S. A. Vorob’ev R. B. Nikolaeva Yu. L. Mikhlin 《Russian Journal of General Chemistry》2010,80(6):1122-1127
Optimal conditions were found for the preparation of copper nanoparticles in aqueous solution via reduction of copper(II) ions with hydrazine hydrate. The effects of ligand environment of copper(II) in the initial solution (hydrate, ammonia, citrate, and glycine complexes), concentration, pH, surfactants, temperature, and mode of heating were examined. The obtained colloidal systems were studied by optical spectroscopy, X-ray photoelectron spectroscopy, X-ray powder diffraction, and atomic force microscopy. The examined colloids were found to contain generally spherical copper nanoparticles with a diameter of about 10 nm, which were coated with a copper(I) or copper(II) oxide and hydroxide film. 相似文献
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A method for preparation of divinylbenzene-styrene copolymer porous layer on the inner wall of a fused silica capillary was developed. Capillary gas chromatography was used to investigate the sorption capacity of copolymer film toward substances of various classes. 相似文献
28.
The theoretical investigation of the hyper-Raman scattering by 2LO phonons is carried when the doubled energy of incident photons lies near the band gap of a semiconductor. The scattering process is considered, taking into account the Wannier excitons as intermediate states. 相似文献
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The problem of two-layer heavy inviscid fluid flow past a vortex in the presence of a semi-infinite plate on the interface when the fluids have different densities and velocities at infinity is solved in the linear approximation. The forces exerted on the vortex and the plate and the shape of the interface are determined as functions of the location of the vortex, its intensity, the Froude number, the free-stream density ratio and the velocities. 相似文献