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71.
A. Nikolic Lj. Petrov Dj. Koruga S. Mihajlovic 《Fullerenes, Nanotubes and Carbon Nanostructures》2005,13(1):53-59
Magnetic behavior of C60 thin films in the Earth's magnetic field under polarization light influence is presented. Transformation of magnetic field for two fullerene thin films of different thickness is investigated. Two proton magnetometers were used for these measurements. Samples of 30 nm and 250 nm thickness illustrate a significant change of magnetic field intensity under the influence of polarization light, in range from 3.4 to 12.9 nT, for 200 measurement data per sample. 相似文献
72.
V. V. Petrov A. A. Kryuchin S. M. Shanoylo V. I. Sidorenko 《Cybernetics and Systems Analysis》2003,39(5):777-782
Potentialities of the methods of information processing, distribution, and storage are analyzed. Directions are defined in which optical information media characteristics can be improved. Possibility of using optical media for a long-term storage of digital information is considered. 相似文献
73.
Petrov S. I. Kaidash A. P. Krasovitskii D. M. Sokolov I. A. Pogorel’skii Yu. V. Chalyi V. P. Shkurko A. P. Stepanov M. V. Pavlenko M. V. Baranov D. A. 《Technical Physics Letters》2004,30(7):580-582
Technical Physics Letters - InGaN/GaN heterostructures have been grown by molecular beam epitaxy (MBE) using ammonia as a source of nitrogen. The influence of the growth temperature and rate on the... 相似文献
74.
Extraction of U(VI) from perchlorate solutions with diantipyrylmethane derivatives in chloroform and dichloroethane is studied. The composition of extractable complexes is [UO2L2](ClO4)2. The extraction constants are estimated. The maximal extractive power is shown by diantipyrylmethane in dichloroethane. Introduction of substituents at the methylene carbon of the extractant molecule makes the extraction worse. 相似文献
75.
Anton Glushchenko Vladislav Petrov Konstantin Lastochkin 《International Journal of Adaptive Control and Signal Processing》2021,35(6):1120-1137
The scope of this research is a problem of parameters identification of a linear time-invariant plant, which (1) input signal is not frequency-rich, (2) is subjected to initial conditions and external disturbances. The memory regressor extension (MRE) scheme, in which a specially derived differential equation is used as a filter, is applied to solve the above-stated problem. Such a filter allows us to obtain a bounded regressor value, for which a condition of the initial excitation (IE) is met. Using the MRE scheme, the recursive least-squares method with the forgetting factor is used to derive an adaptation law. The following properties have been proved for the proposed approach. If the IE condition is met, then: (1) the parameter error of identification is bounded and converges to zero exponentially (if there are no external disturbances) or to a set (in the case of them) with an adjustable rate, (2) the parameters adaptation rate is a finite value. The above-mentioned properties are mathematically proved and demonstrated via simulation experiments. 相似文献
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A. P. Mikhailov A. P. Petrov O. G. Proncheva N. A. Marevtseva 《Mathematical Models and Computer Simulations》2017,9(5):580-586
A model of information warfare in a society when one of the parties periodically destabilizes the system by a short-term jump-wise increase in the intensity of the propaganda in the media is analyzed. The model has the form of two nonlinear ordinary differential equations with a periodic discontinuous right-hand side. The asymptotical solution to the periodic solutions are constructed for the case of low-intensity dissemination of information through interpersonal communication. The transient regime is investigated numerically. 相似文献
80.
Double‐layered hydrogels of super‐macroporous poly(2‐hydroxyethyl methacrylate) (PHEMA) cryogel core and poly(ethylene oxide) (PEO) hydrogel outer layer for encapsulation of the enzyme urease were constructed. The enzyme was entrapped into the pores of PHEMA cryogel by soaking and then the core was covered with a PEO layer. The leaking of urease from the core was prevented when the density of the PEO network was increased by incorporation of the crosslinking agent, poly(ethylene glycol) diacrylate. The hybrid system exhibited a nearly constant enzyme activity with time and maintained its structural integrity after several reactions of hydrolysis of urea. The potential of double‐layered hydrogels containing urease for establishment of water pollution with copper was investigated as well. Copyright © 2011 Society of Chemical Industry 相似文献