2. Nonlinear Acoustics in Solid State Physics
Interaction of elastic waves. Nonlinear acousto-electronics, magneto-acoustics, and NA of crystals. Nonlinear phenomena accompanying high-intensity wave propagation in solids.

3. Nonlinearity of Media and Structures, Nonlinear Testing
Nonlinear properties of solids with inhomogeneities. Nonlinearities of structures. Nonlinear nondestructive evaluation and testing of industrial products, materials, buildings and geological structures.

4. Nonlinear Acoustics of Fluids and Multi-Phase Media, Cavitation Phenomena
Nonlinear properties of fluids, polymers, composites and multi-phase media. Nonlinear wave propagation in such media. Acoustic cavitation, sonoluminescence, sonochemistry.

5. Nonlinear Acoustics in Medicine and Biology
Nonlinear waves in biological tissues. NA methods in the diagnostics, therapy and surgery. Tissue harmonic imaging, bubble harmonic imaging, HIFU, and lithotripsy. Interaction of high-intensity waves with biological systems.

6. Nonlinear Acoustics of the Atmosphere, the Ocean, and the Earth
Nonlinear wave propagation through inhomogeneous geophysical media. Nonlinear phenomena in the atmosphere, the ocean and the Earth. Sonic booms, acoustics of explosions, and earthquakes.

7. Nonlinear Acoustics and Flows, Instabilities, Turbulence, and Thermoacoustics
Interaction of sound with gas-dynamic flows and generation of sound. Hydrodynamic instabilities and acoustic fields. Sound, jets, vortexes and turbulence. Heat exchange stimulated by sound.

8. Nonlinear Noise and Chaos
Statistical nonlinear acoustics. High-intensity noise and waves in randomly inhomogeneous media. Dynamic chaos in acoustical systems. Fractals in Nonlinear Acoustics.

9. Nonlinear Acoustics and Optics
Interactions of sound and light. Acousto-optics and opto-acoustics. Related nonlinear phenomena in acoustics and optics: self-focusing, stimulated scattering, selective dispersion and absorption phenomena.

10. Nonlinear Acoustics and Time Reversal Phenomena
Nonlinear processes in generation of phase conjugated waves. Nonlinear time reversed waves in homogeneous and inhomogeneous media. Applications of time reversed Nonlinear Acoustics. Numerical methods and studies of nonlinear time reversal processes.

11. Devices and Industrial Applications of Nonlinear Acoustics
Nonlinear Acoustic phenomena used in devices, instruments and technologies. Ideas, progress and perspectives.

12. Modern Group Analysis (MOGRAN 9)
New theoretical developments and applications of Lie group analysis to nonlinear mathematical models in natural and engineering sciences.