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На этой странице приведены все страницы сервера ,которые мы индексируем. Показаны документы 961 - 980 из 2727011.

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961. Abstract
... Impulsive Fracture of Solids Induced by Propagation-Enhanced Nonlinear Elastic Surface Waves . A.M.Lomonosov (General Physics Institute, Moscow, Russia); P.Hess (Institute of Chemical Physics, University of Heidelberg, Heidelberg, Germany) . ... In contrast to nonlinear sound waves in fluids nonlinear surface acoustic waves (SAWs) can generate steep shock fronts with stress magnitudes that grow with propagation distance. ... This effect is explained theoretically and described quantitatively. ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/ImpulsiveFractureofSolidsInducedbyPropagationEnhancedNonlinearElasticSurfaceWaves.htm -- 6.7 Кб -- 10.07.2002
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962. AUTHOR : In'kov V
. AUTHOR : In'kov V. 1. ааа Opto-Acoustic Response From Absorbed Particle in Liquid . V.In'kov, I.M.Pelivanov (Faculty of Physics, Moscow State University, Moscow, Russia); A.A.Karabutov (International Laser Center, Moscow State University, Moscow, Russia) .
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/In'kovV.htm -- 5.8 Кб -- 10.07.2002
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963. Abstract (Invited)
... Industrial Application of Power Ultrasonics . ... Novel technical means such as laser, plasma, electromagnetic fields and fluxes of high-energy particles extend substantially the possibilities of active influence on physicochemical processes. Intense elastic vibrations of ultrasonic frequency range provide a means for an active control of the processes of heat and mass transfer in various substances, the structure of solids, and the processes of the interaction between contacting materials. ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/IndustrialApplicationofPowerUltrasonics.htm -- 7.8 Кб -- 10.07.2002
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964. Abstract
... Influence of Cavitation and Thermoacoustic Processes on Biological Tissue Destruction Under Action of Laser Pulses with Regular Temporal Structure . ... One can suppose that proper temporal structure of laser pulses allows to increase the efficiency of heat removal due to speeding-up of tissue removal and to reduce the area of thermal injury. ... The energy and temporal structure of pulses, and acoustic wave generated by radiation in the tissue were controlled. ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/InfluenceofCavitationandThermoacousticProcessesonBiologicalTissueDestructionUnderActionofLaserPulseswithRegularTemporalStructure.htm -- 6.9 Кб -- 10.07.2002
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965. Abstract
... Influence of Elastic Nonlinearity of the Earth.S Crust on Regional and Teleseismic Waves Generated by Underground Nuclear Explosions . ... The analysis is based on the evolution equation derived earlier [Ionov A.M., Sirotkin V.K. About asymptotic behaviour of acoustic signal radiated by a spherical source in a nonlinear absorbing medium. ... It is shown that the overall influence of the crustal elastic nonlinearity near the source can increase the P-wave amplitude at the most twice. ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/InfluenceofElasticNonlinearityoftheEarthSCrustonRegionalandTeleseismicWavesGeneratedbyUndergroundNuclearExplosions.htm -- 7.3 Кб -- 10.07.2002
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966. Abstract
... Influence of Internal Structure of Polycrystalline Copper on Its Nonlinear Elastic and Acoustic Properties . A.I.Korobov, A.N.Ekonomov (Department of Acoustics, Faculty of Physics, Moscow State University, Moscow, Russia) . ... During elastic and plastic deformation (with application of unloading and subsequent loading) the complex research (static, quasistatic and dynamic methods) of mechanical and acoustic properties of copper wires with various initial internal structure is performed. ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/InfluenceofInternalStructureofPolycrystallineCopperonItsNonlinearElasticandAcousticProperties.htm -- 6.6 Кб -- 10.07.2002
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967. Abstract
... 1.5 kHz into a load and change in the displacement amplitude of a radiator in the range 5 - 15 mm was investigated. In the experiments a change in the magnitude of cavitation region and the level of cavitation noise in the frequency range 10 - 400 kHz depending on the displacement amplitude of a radiator were estimated. ... With an increase in the viscosity of liquid, the level of cavitation noise at fixed values of the displacement amplitude rises. ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/InfluenceofLiquidViscosityonPeculiaritiesofCavitationDevelopment.htm -- 6.7 Кб -- 10.07.2002
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968. Abstract
... Influence of Low Frequency Acoustic Field on Evaporation of Water Pellicles and Single Drops in Capillaries . ... In our report we've considered one of the ways low frequency acoustic waves influence the permeability of porous medium, connected with stimulating of the evaporation processes of water films and single props. ... Dynamics of the evaporation of a single drop under the influence of a low frequency acoustic field on the porous medium has been considered separately. ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/InfluenceofLowFrequencyAcousticFieldonEvaporationofWaterPelliclesandSingleDropsinCapillaries.htm -- 7.8 Кб -- 10.07.2002
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969. Abstract
... Influence of a Sound Field Parameters on Drops Dispersion at Liquids Acoustic Atomization . ... The attempt of theoretical explanation of these results with the help of the theory of a single initial drop static instability resulting in the drop flattening in a film and the subsequent dynamical instability of the film (modification of a Faraday effect) giving rise the fragmentation is given. ... According to the theory the size of fragments is proportional to depth of a film. ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/InfluenceofaSoundFieldParametersonDropsDispersionatLiquidsAcousticAtomization.htm -- 7.0 Кб -- 10.07.2002
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970. Abstract
... Influence of the Direct Wave on Bubbles in Electrohydraulic Lithotripters: in-Vitro Observations . ... In shock-wave lithotripsy, or SWL, an acoustic pulse is used to destroy kidney stones. ... Although the direct wave is much smaller in amplitude than the focused wave, it remains sufficiently large to affect bubble dynamics at the lithotripter focus in vitro. ... Phys. Fluids 14, 913-921 (2002)], we have examined the influence of the direct wave on bubbles at the lithotripter focus. ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/InfluenceoftheDirectWaveonBubblesinElectrohydraulicLithotriptersinVitroObservations.htm -- 7.0 Кб -- 10.07.2002
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971. Abstract
... Influences of a Boundary Layer on Nonlinear Standing Waves in Closed Cylindrical Resonators . ... The paper deals with study of a boundary layer influence on nonlinear standing waves in closed   cylindrical resonators.The boundary layer causes low-frequency attenuation, dispersion and   diffraction of standing waves. ... In this case we can describe nonlinear standing plane waves by   the inhomogenous generalized Burgers equation (GBE). ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/InfluencesofaBoundaryLayeronNonlinearStandingWavesinClosedCylindricalResonators.htm -- 6.7 Кб -- 10.07.2002
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972. Abstract
... Influencing of Effects of Sounding Nonlinearity on Characteristics of a Wave Field of the Power Vibrator . ... Major perspectives for investigation here introduces a vibroseismic method of sounding of the Earth with the help of regular seismic oscillations, generated with the help of power vibrational sources. Such sources are mounted on a daylight area of the Earth and raise in medium monochromatic oscillations or oscillations of increasing frequency in a given band.. ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/InfluencingofEffectsofSoundingNonlinearityonCharacteristicsofaWaveFieldofthePowerVibrator.htm -- 6.9 Кб -- 10.07.2002
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973. Abstract (Invited)
... Infrasound Generation at Sea Surface Wave Blockage . ... Two counter-traveling gravity-capillary waves of the same frequency, forming a standing wave on the surface, give rise to a sound wave traveling away from the sea surface [M. S. Longuet-Higgins, 1950; L. M. Brekhovskikh, 1966]. In general, nonlinear interaction of surface gravity-capillary waves propagating in opposite directions may result in radiation of a sound wave that propagates from the surface of the ocean. ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/InfrasoundGenerationatSeaSurfaceWaveBlockage.htm -- 6.9 Кб -- 10.07.2002
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974. Abstract
... Initiation of Destructive Strike Acoustic Wave in the Liquid of the Big Volume at the Temperature Near to Boiling Point . ... Let, in the closed reservoir not completely filled by liquid at the temperature near to boiling point, the pressure decreases quickly. Here, the temperature of liquid boiling decreases also quickly and if it is less than original liquid temperature, the part of the internal energy will be expended for vapor formation. ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/InitiationofDestructiveStrikeAcousticWaveintheLiquidoftheBigVolumeattheTemperatureNeartoBoilingPoint.htm -- 7.0 Кб -- 10.07.2002
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975. Abstract (Invited)
... Interaction of Acoustic and Temperature Fields in Thermoacoustics . M.Bruneau, P.Lotton, V.E.Gusev (Laboratoire d'Acoustique de l'Universite du Maine, UMR CNRS 6613, Universite du Maine, Le Mans, France) . ... Interaction between acoustic and thermal waves is the physical origin of thermoacoustic phenomena. This interaction leads to thermoacoustic instability in the prime-movers   and to heat transport from cold to hot in thermoacoustic refrigerators. ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/InteractionofAcousticandTemperatureFieldsinThermoacoustics.htm -- 7.1 Кб -- 10.07.2002
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976. Abstract
... Interaction of Radial and Forward Pulses of Cavitation Bubbles . ... At fast collapse the effective transmitting of radial energy into forward one takes place. ... So, if heat exchange, lose of sphericity, interaction with other bubbles and flows of liquid are taken into consideration additionally, in the field of progressive sound waves Tmax <= 1000 K. While one observes smooth forward motion of cavitation bubbles, they jump for every fast collapse and stay immovably during remaining time. ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/InteractionofRadialandForwardPulsesofCavitationBubbles.htm -- 6.8 Кб -- 10.07.2002
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977. Abstract
... Interference of Two Co-Generated Frequency Modulated Parametric Array Signals . ... These effects include the interference of the output of the matchfilters of the difference frequency signals of two parametric arrays generated simultaneously by the same transducer. a) One of the two parametric arrays is forward linear frequency modulated ; the other is backward linear frequency modulated , and the central frequencies of the modulating signals for the two parametric ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/InterferenceofTwoCoGeneratedFrequencyModulatedParametricArraySignals.htm -- 6.5 Кб -- 10.07.2002
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978. Abstract
... Invariant Equations for (1+1) Linear Parabolic Equations . ... Semi-invariants for linear parabolic equations in two independent variables and one dependent variable under linear changes of the dependent variable have been investigated in [1]. The joint invariant equation for   (1+1) linear parabolic equations for reduction to the classical heat equation has also been deduced in [2]. We further study reduction for these type of equations   under equivalence transformations. ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/InvariantEquationsforLinearParabolicEquations.htm -- 6.8 Кб -- 10.07.2002
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979. Abstract
... Invariant Representation of Equations with a Small Parameter . ... Methods of integrating differential equations by using their symmetry group properties are based on the theorem on invariant representation of these equations. ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/InvariantRepresentationofEquationswithaSmallParameter.htm -- 6.4 Кб -- 10.07.2002
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980. Abstract
... Invariants for Generalised Burgers Equations . ... Recently, one of the authors (NHI) adopted the infinitesimal method for calculating invariants of families of differential equations using the equivalence groups. ... Here, we use the above method for calculating invariants of the family of generalised Burgers equations which has applications in acoustic phenomena and furthermore has been used to model turbulence and certain steady state viscous flows. ...
[ Сохраненная копия ]  Ссылки http://acs366.phys.msu.su/isna16/Abstracts/InvariantsforGeneralisedBurgersEquations.htm -- 6.9 Кб -- 10.07.2002
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