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1.
A. M. Badalyan M. S. Polyakov V. V. Kaichev V. A. Nadolinnyi I. K. Igumenov 《Inorganic Materials》2013,49(8):775-780
Stable heterogeneous synthesis products in combined synthesis-transport processes for the growth of thin copper films have been studied by ESR, X-ray photoelectron, and IR spectroscopies. The results demonstrate that the synthesized volatile compounds condensed on solid surfaces have the form of formate-like metal complexes of copper(I). We have identified the mechanisms underlying the formation of volatile monomeric metal complexes on the surface of copper-containing precursor particles and the mechanism of the thermal decomposition of metal complexes on a heated substrate. 相似文献
2.
V. G. Badalyan E. G. Bazulin A. Kh. Vopilkin D. V. Grebennikov D. S. Tikhonov 《Russian Journal of Nondestructive Testing》2000,36(1):45-50
Utilization of super-resolution techniques in processing reflected signals in ultrasonic testing has proved to be useful with
a view to improve expert estimates of defect dimensions and shapes with the help of theAvgur holographic facility. In particular, the improvements in the image quality mostly due to athree-fold increase in the beam coordinate resolution has allowed more accurate determination of defect dimensions and more reliable
classification of defects.A lower intensity of the speckle noise due to the broader frequency band can also be considered as a favorable feature of the extrapolation techniques. The signal-to-noise
ratio in the images of flaws in materials with an intense structural noise isa factor of about 1.7 higher when super-resolution techniques are used. The paper describes some results of practical utilization of super-resolution
techniques in estimating dimensions of flaws detected in welded joints of DU-300 pipelines (an effective diameter of 300 mm)
of nuclear power plants. 相似文献
3.
The history of development of acoustic holography in Russia is outlined. Examples of its efficient applications are given. 相似文献
4.
Plasma Deposition and Properties of Silicon Carbonitride Films 总被引:1,自引:0,他引:1
T. P. Smirnova A. M. Badalyan V. O. Borisov V. V. Kaichev L. F. Bakhturova V. N. Kichai V. I. Rakhlin B. A. Shainyan 《Inorganic Materials》2005,41(7):706-712
A variety of advanced analytical techniques were used to characterize silicon carbonitride films grown from new volatile nitrogen-rich silyl derivatives of asymmetrical dimethylhydrazine: (CH3)2HSiNHN(CH3)2 (DMDMSH) and Me2Si(NHNMe2)2 (bisDMHDMS). The results demonstrate that the films contain only Si-C, Si-N, and C(sp
3)-N bonds, in relative amounts that depend on the molecular structure of the precursor and deposition conditions. The Si-C/[Si-N + C(sp
3)-N] ratio is considerably larger in the films grown from DMDMSH. The data obtained by a variety of spectroscopic techniques provide solid evidence that some of the films contain C(sp
3)-N bonds, characteristic of superhard materials, and that the films have a complex, framework structure, rather than being a mixture of Si3N4, SiC, and C3N4. The structure of the films depends on the N : Si ratio in the precursor: at N : Si = 2, the films are amorphous and contain nanocrystalline inclusions with a tetragonal structure; at N : Si = 4, the films are purely amorphous. The ability to control the chemical composition and structure of deposits allowed us to produce films with various physicochemical and electrical properties.__________Translated from Neorganicheskie Materialy, Vol. 41, No. 7, 2005, pp. 808–815.Original Russian Text Copyright © 2005 by Smirnova, Badalyan, Borisov, Kaichev, Bakhturova, Kichai, Rakhlin, Shainyan. 相似文献
5.
Second-harmonic generation in a double-quantum-well nanostructure is analyzed. Optimization of the structure design from the viewpoint of attaining the highest intensity of the second-harmonic wave at the output is considered. Relationships between the quantum-well parameters in a structure satisfying the double-resonance condition are established. The dependence of the optical characteristics of the system on the quantum-well parameters is studied and the problem of optimization of the second-harmonic intensity is solved. It is demonstrated that the highest conversion efficiency is attained under the conditions where the second-harmonic generation coefficient is maximum. 相似文献
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7.
Azzedine Boukerche Anahit Martirosyan Richard Pazzi 《Mobile Networks and Applications》2008,13(6):614-626
The ambient intelligence paradigm is built upon Ubiquitous Computing (UC), in which the computing devices are embedded in
the environment with the purpose of enhancing the human experience at home, workplace/office, learning, health care etc. The
UC applications aim at providing services to the users anywhere, anytime in an unobtrusive, seemingly invisible way. Wireless
sensor networks (WSNs) have great potential for UC applications and are envisioned to revolutionize them. This paper presents
a clustering routing protocol for event-driven, query-based and periodic WSNs. The protocol aims at optimizing energy dissipation
in the network as well as providing network’s fault tolerance and connectivity. Message propagation is accomplished by using
short distance transmissions by employing nearest neighbor nodes between neighboring clusters. Moreover, the algorithm proposes
using an energy efficient approach by alternating the nodes responsible for inter-cluster communication inside one cluster.
The algorithm also aims at even energy dissipation among the nodes in the network by alternating the possible routes to the
Sink. This helps to balance the load on sensor nodes and increases the network lifetime, while avoiding congested links at
the same time. We discuss the implementation of our protocol, present its proof of correctness as well as the performance
evaluation through an extensive set of simulation experiments.
This work is partially sponsored by Grants from the NSERC, Canada Research Chairs Program, ORNEC, the Ontario Distinguished
Researcher Award and the EAR Award. 相似文献
8.
R. A. Babunts A. G. Badalyan N. G. Romanov A. S. Gurin D. O. Tolmachev P. G. Baranov 《Technical Physics Letters》2012,38(10):887-890
To perform optical detection of high-frequency magnetic resonance (ODMR) and cyclotron resonance (ODCR) with a spatial resolution, we have proposed a noncavity scheme of an ODMR-ODCR spectrometer using a quasi-optical microwave channel. The efficiency of this scheme for obtaining information on the spin properties of ZnO quantum dots and CdMnTe quantum wells and on the effective masses of carriers in crystalline silicon films with a spatial resolution within a focused laser beam is illustrated. 相似文献
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10.
R. G. Badalyan S. R. Meschyan 《Power Technology and Engineering (formerly Hydrotechnical Construction)》1976,10(7):667-672
1. | The method of testing twin specimens can be used for determining the parameters of compressive vibrational creep. |
2. | The process of compressive vibrational creep in the case of variable vibration amplitudes is approximated best by the strengthening theory. This process can be approximated satisfactorily also by the aging and hereditary creep theories. |