Using numerical experiment one-dimensional unsteady processes of heterogeneous combustion in porous object under free convection in horizontal case have been investigated and compared with vertical case. It is shown t...
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Using numerical experiment one-dimensional unsteady processes of heterogeneous combustion in porous object under free convection in horizontal case have been investigated and compared with vertical case. It is shown that in the case of the horizontal porous object the oxidizer supply, which is the result of natural convection, is not sufficient for the appearance of stable wave of heterogeneous combustion. In contrast to the vertical position of the object, there are no long-lived combustion waves in the horizontal case, which completely burns down the solid combustible material. When the ignition zone is on the border of the object, the combustion wave near the vicinity of the boundary burns the oxygen and becomes extinct. When the ignition zone is in the center of the porous object, two combustion waves arise which may move very slowly, burn oxygen and become extinct.
One important way to control the technical condition of the high-voltage power equipment element is the monitoring and interpretation of electromagnetic radiation. Analysis of the spectra of emitted high-voltage equip...
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One important way to control the technical condition of the high-voltage power equipment element is the monitoring and interpretation of electromagnetic radiation. Analysis of the spectra of emitted high-voltage equipment EMR provides information on which determines the intensity discharge processes occurring in insulation and other structural elements of high voltage equipment under the operating voltage without interfering with the process.
The study of optical properties of AlO, SiO, TiO, and Zn O nanoparticles in weak optical fields is presented. We found that some nanoparticles have unique optical nonlinearity: The values of portions to nanoparticle r...
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The study of optical properties of AlO, SiO, TiO, and Zn O nanoparticles in weak optical fields is presented. We found that some nanoparticles have unique optical nonlinearity: The values of portions to nanoparticle refractive index and absorption coefficient increase to maxima, and then decrease to zero when the radiation intensity changes from 1 to 500 W/cm2. We estimated electron energy structures of nanoparticles and experimentally determined that such nonlinearity is directly related to peculiarities of the energy structure. We obtained a good fitting of theoretical results to the experimental ones（e.g. absorbance spectra of nanoparticles;the dependence of nanoparticle refractive index and absorption coefficient on radiation intensity）.
In this paper we propose an original functional method which allows us to determine the effect of different deviations of nano-object shape on quantum characteristics of particles localized inside the nano-object. Thi...
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In this paper we propose an original functional method which allows us to determine the effect of different deviations of nano-object shape on quantum characteristics of particles localized inside the nano-object. This method is ideologically similar to the perturbation theory, but the perturbation of the surface shape, rather than potential, is used. The results of analysis the quantumsize states of particles inside the nano-object with deformed sphere shape showed that the probability density of particle location is more sensitive to shape perturbations than surface energy spectrum and quantum states density are.
Si/Ca2Si/Si(111) and Si/Ca3Si4/Si(111) heterostructures have been formed by procedure of layer-by-layer deposition of Ca at 130 °C or 500 °C on previously formed layer of amorphous Si or on a polycrystalline...
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In this paper we propose an original functional method which allows us to determine the effect of different deviations of nano-object shape on quantum characteristics of particles localized inside the nano-object. Thi...
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Mg2Si layers were grown on silicon by RDE at 150 °C and by SPE at 160 °C, and they were covered by silicon cap grown by MBE at 150-180 °C. The silicide layers and the silicon cap were investigated by in...
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The study of optical properties of Al2O3, SiO2, TiO2, and ZnO nanoparticles in weak optical fields is presented. We found that some nanoparticles have unique optical nonlinearity: The values of portions to nanoparticl...
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In this paper the method of identification of underwater vehicle (UV) mathematical model parameters is offered. This method allows providing the limited set of UV onboard sensors and has acceptable complexity for usin...
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In this paper the method of identification of underwater vehicle (UV) mathematical model parameters is offered. This method allows providing the limited set of UV onboard sensors and has acceptable complexity for using on UV onboard computer.
In this paper, an approach for development of program-verifier whereby it is carried out a check of mission for autonomous underwater vehicle (AUV) is proposed. The approach is consisted in substitution of standard li...
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In this paper, an approach for development of program-verifier whereby it is carried out a check of mission for autonomous underwater vehicle (AUV) is proposed. The approach is consisted in substitution of standard libraries, in which described access to all resources of AUV, on libraries which carry out transmit of commands and parameters of these commands to external program-verifier. The program-verifier considerably facilitate localization of logical error in mission and show state of AUV and its on-board equipments when commands execution of mission.
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