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441. Abstract
... Nonlinear Seismology: Experimental Structure . O.B.Khavroshkin, V.V.Tsyplakov (Schmidt United Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia) . ... Let's present a first stage of experimental search, investigation and analysis of nonlinear seismic effects, processes and medium as formative structure of nonlinear seismology. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearSeismologyExperimentalStructure.htm -- 7.5 Кб -- 10.07.2002
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442. Abstract
... Nonlinear Sound Wave Propagation in 2-D Hysteretic Medium . ... Numerous experimental and theoretical researches show hysteresis of mesoscale structures essentially changes nonlinear properties of the media. ... Computer simulation of finite amplitude sound wave propagation in 2-D medium with random mesoscale hysteresis has been done. It is shown that hysteresis process leads to 2-D fractal formation in the medium structure under cyclic sound excitation. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearSoundWavePropagationinDHystereticMedium.htm -- 6.3 Кб -- 10.07.2002
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443. Abstract
... Nonlinear Sound Wave Propagation in Water Solutions of D-Glucose . G.I.Maksimochkin (Laboratory of Molecular Acoustics, Moscow State Academy of Instruments Engineering and Computer Science, Moscow, Russia) . ... Results of experimental investigations of nonlinear wave propagation in water solutions of D-glucose in a range of frequencies 1,5-150 MGz, concentration 0,01; 0,025 and 0,05 m.s., pressure 0,1-200 MPa and temperatures 293 - 363 K are presented. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearSoundWavePropagationinWaterSolutionsofDGlucose.htm -- 6.3 Кб -- 10.07.2002
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444. Abstract
... Nonlinear Stability of Roll Waves . A.Boudlal (USTL-Lab. ... e-mail: Abdelaziz.Boudlal@univ-lille1.fr . The stability of finite amplitude roll waves that may develop at a liquid free surface in inclined open channels of arbitrary cross-section is studied. In the frame of shallow water theory with turbulent friction the modulation equations for wave series are derived and a nonlinear stability criterion is obtained. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearStabilityofRollWaves.htm -- 6.0 Кб -- 10.07.2002
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445. Abstract
... Nonlinear Standing Waves in a Layer Excited by the Periodic Motion of Its Boundary . B.Enflo (Department of Mechanics, Kungl. ... A new analytical approach is developed for the description of standing waves caused by arbitrary periodic vibration of a boundary. ... The maximal "amplitude" values of the particle velocity and the energy of a standing wave are calculated. ... The standing wave profiles are described by Mathieu functions, and the energy characteristics by their eigenvalues. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearStandingWavesinaLayerExcitedbythePeriodicMotionofItsBoundary.htm -- 7.1 Кб -- 10.07.2002
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446. Abstract (Invited)
... Nonlinear Models of Waves in Granulated Partially Wet Media . ... The effect discovered recently means that relatively weak waves of low frequency can change stability of small drops in flows through porous space. ... The simplest explanation is connected with solid friction at the grain contacts and crack edges emitting high frequency waves at any deformation of the material matrix. ... Their roles and effects are changing with gas saturation and depend also on the form of gas presence. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearModelsofWavesinGranulatedPartiallyWetMedia.htm -- 7.5 Кб -- 10.07.2002
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447. Abstract
... Nonlinear Modulation of Rayleigh Waves in a Layered Elastic Half Space . ... In this work the propagation of small but finite amplitude Rayleigh waves in an elastic half-space covered by a different elastic layer of uniform and finite thickness is considered. ... Then the nonlinear self modulation of a group of Rayleigh waves centered around a wave number and a frequency is considered. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearModulationofRayleighWavesinaLayeredElasticHalfSpace.htm -- 6.9 Кб -- 10.07.2002
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448. Abstract (Invited)
... Nonlinear Phenomena in Bubbly Liquids . ... In particular in a result of experimental studies of intensity dynamics of laser beam scattering the idea about two-phase state of real liq-uids was formulated. Using the conservation laws of gas dynamics and assumption that nonline-arity of processes is mainly determined by the bubble dynamics the two-phase mathematical model for average pressure and volumetric concentration of gas phase was suggested. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearPhenomenainBubblyLiquids.htm -- 7.9 Кб -- 10.07.2002
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449. Abstract
... Nonlinear Propagation of Two-Component Waves . ... Steady-state solutions in the form of coupled kinks were found and investigated. ... It was shown, that stationary amplitudes of coupled kinks can be not monotone increasing functions. ... The domains of coupled kinks were found. ... The dynamics of coupled shock waves formation under input harmonic perturbation has been discussed. ... The period bisection was observed with coupled waves excitation by input second component. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearPropagationofTwoComponentWaves.htm -- 6.7 Кб -- 10.07.2002
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450. Abstract
... Nonlinear Properties of Damaged Objects: Application to Crack Detection . ... Nonlinear properties have been experimentally evaluated for a number of thick glass plates being damaged by a thermal shock. ... More damage leads to higher nonlinearity. Nonlinearity of strongly damaged plates increased by the factor 300 compared to the intact ones. High nonlinearity in cracked samples has been confirmed by a strong manifestation of frequency-up and frequency-down conversion phenomena. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearPropertiesofDamagedObjectsApplicationtoCrackDetection.htm -- 6.7 Кб -- 10.07.2002
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451. Abstract (Invited)
... Nonlinear Properties of Magnonic and Magnonic-Phononic Crystals . ... Drawing an analogy with photonic crystals possessing a photonic band, namely the frequency range where the wave propagation is forbidden, such magnetic media can be named magnonic ? and magnonic-phononic crystals. ... Such magnonic crystals in a microwave frequency range can be a challenge for photonic crystals operating at the visual light frequency band. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearPropertiesofMagnonicandMagnonicPhononicCrystals.htm -- 7.3 Кб -- 10.07.2002
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452. Abstract
... Nonlinear Ion Acoustic Waves in a Magnetic Plasma . ... These waves are described ? by well known and sufficiently complicated nonlinear system of the three equations for the three desired function - the ions flow velocity, the electron (ion) density and the electrical field potential. ... As a result we find for all three desired functions quasi-monochromatic wave motions with a ? general phase. In the frame of these motions explicit approximate formulae for all desired functions are constructed. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearIonAcousticWavesinaMagneticPlasma.htm -- 7.0 Кб -- 10.07.2002
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453. Abstract
... Nonlinear Magneto-Acoustic Phenomena Near Spin-Reorientation Instability . V.Preobrazhensky (Wave Research Center of Prokhorov General Physics Institute RAS and Institut d'Electronique et de Micro-Electronique du Nord (IEMN-DOAE-UMR CNRS 8520)-Ecole Centrale de Lille, Lille, France); P.Pernod (Institut d'Electronique et de Micro-Electronique du Nord (IEMN-DOAE-UMR CNRS 8520), Ecole Centrale de Lille, Villeneuve d'Ascq, France) . ... Journ. Magn. ... 173(1998); 185. 127(1998). ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearMagnetoAcousticPhenomenaNearSpinReorientationInstability.htm -- 7.6 Кб -- 10.07.2002
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454. Abstract
... Nonlinear Magnetoacoustics of Rare-Earth Orthoferrites . B.Zon, D.L.Dorofeev, A.A.Krivchenkova, G.V.Pakhomov (Physical Department, Voronezh State University, Voronezh, Russia) . ... Nonlinear acoustic effects in the crystals of rare-earth orthoferrites are investigated. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearMagnetoacousticsofRareEarthOrthoferrites.htm -- 6.3 Кб -- 10.07.2002
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455. Abstract (Invited)
... Nonlinearity Parameter Measurement and Characterization of Microstructural States in Solids . ... Novel harmonic generation measurement techniques have been developed to obtain in-situ nonlinearity parameters of metallic materials. ... Experimental arrangements are discussed and experimental results are directly compared with values predicted from theoretical calculations of the microstructural contributions in aluminum single crystals, aluminum alloys, and stainless steels. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearityParameterMeasurementandCharacterizationofMicrostructuralStatesinSolids.htm -- 6.4 Кб -- 10.07.2002
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456. Abstract
... Nonlinearity and Slow Dynamics in Rocks: Response to Changes of Temperature and Humidity . J.TenCate, T.J.Shankland (Los Alamos National Laboratory, Los Alamos, NM, USA) . ... As revealed by longitudinal bar resonance experiments, materials such as rocks and concrete show a wide range of nonlinear elastic behavior. We have examined the time-dependent changes of linear and nonlinear elastic properties of rocks in response to changes in relative humidity (RH) and temperature. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearityandSlowDynamicsinRocksResponsetoChangesofTemperatureandHumidity.htm -- 6.8 Кб -- 10.07.2002
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457. Abstract
... Nonlinearity of Sound Wave Propagation and Stimulated Brillouin Scattering Process . A.I.Erokhin (Nonlinear Optics and Light Scattering Laboratory, Lebedev Physical Institute, Moscow, Russia) . ... Hypersound intensity in SBS process usually exceeds some kW/cm2 and is naturally expected to reveal nonlinear features. ... It causes the atypical acoustic nonlinearity appearance. ... New experimental approaches for investigation of intense hypersound propagation in liquids have been tried. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearityofSoundWavePropagationandStimulatedBrillouinScatteringProcess.htm -- 6.8 Кб -- 10.07.2002
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458. Abstract
... Nonlinear FDTD-Modeling of Ultrasound Thermotherapy Including Temperature Dependent Tissue Parameters . ... It strongly depends on the counteracting processes of nonlinear ultrasound propagation and tissue attenuation. ... The temperature dependence of tissue parameters is taken into account for the complete model. ... Furthermore it is demonstrated that the temperature dependence of tissue parameters can not be neglected for accurate predictions of the required heating time. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearFDTDModelingofUltrasoundThermotherapyIncludingTemperatureDependentTissueParameters.htm -- 7.0 Кб -- 10.07.2002
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459. Abstract
... Nonlinear Gas Oscillation and Streaming Motion in a Closed Tube with Varying Cross Section . ... The nonlinear resonant gas oscillation and acoustic streaming motion in a closed tube with varying cross section filled with an ideal gas are numerically studied. The resonant gas oscillation is excited by a piston at one end of the tube, which oscillates harmonically at the fundamental resonant frequency of linear quasi-one-dimensional wave motion. ... Section : 7 ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearGasOscillationandStreamingMotioninaClosedTubewithVaryingCrossSection.htm -- 6.8 Кб -- 10.07.2002
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460. Abstract
... Nonlinear Generation and Propagation of Lamb Waves . ... Some interesting features of the physics of the second harmonics of Lamb waves are given. ... The formation process of the second harmonics with cumulative growth effects and the corresponding solutions are presented. It is found that the phases of partial waves of the second harmonics are proportional to the propagation distance for the case in which the phase velocities of fundamental and duple frequency Lamb modes are approximately equal. ...
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Ссылки http://acs366.phys.msu.su/isna16/Abstracts/NonlinearGenerationandPropagationofLambWaves.htm -- 6.9 Кб -- 10.07.2002
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