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Your search keyword '"Ostrovsky, L."' showing total 258 results
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258 results on '"Ostrovsky, L."'

55. Robotic radical trachelectomy with sentinel lymph node mapping using ICG in early cervical cancer - a brief report.

Author

Avnon, T., Gortzak-Uzan, L., Ostrovsky, L., Michaan, N., Raz, Y., and Grisaru, D.

Abstract

Objective: To describe the implementation of robotic radical trachelectomy with sentinel lymph node mapping utilizing indocyanine green (ICG) in patients with early cervical cancer. Materials and Methods: This retrospective analysis studied six cases of robotic assisted laparoscopy with the use of the da Vinci-Firefly fluorescence imaging to detect sentinel lymph nodes. Results: Six patients with cervical cancer clinical Stages IA2 to IB1were included. All patients underwent fertility preserving surgery in which complete tumor resection with free pathological margins was confirmed by final pathology (including an obese patient with a BMI of > 40). There were no major surgical complications. Conclusion: Robotic radical trachelectomy with sentinel lymph node mapping using ICG is an effective and safe method to treat early cervical cancer. [ABSTRACT FROM AUTHOR]

Published
2018
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88. Dynamics of Strongly Nonlinear Kinks and Solitons in a Two-Layer Fluid.

Author

Gorshkov, K., Ostrovsky, L. A., and Soustova, I.

Subjects
*SOLITONS, *NONLINEAR theories, *PERTURBATION theory, *FLUID dynamics, *KORTEWEG-de Vries equation, *COMPUTER simulation, *MATHEMATICAL models
Abstract

Perturbation theory is developed for interaction of strongly nonlinear solitary waves close to the limiting, tabletop solitons (Π-solitons). The method is based on representing each soliton as a compound of two kinks so that the interaction of N solitons is treated as the interaction of 2 N kinks. As an example the Miyata-Choi-Camassa equations for a two-layer fluid is considered. Equations for kink coordinates are obtained and analyzed. Some nontrivial features of two-soliton interaction characteristic of the strongly nonlinear case are established. [ABSTRACT FROM AUTHOR]

Published
2011
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91. Nonlinear acoustic phenomena due to bubble drift in a gas-liquid mixture.

Author

Kobelev, Yu. A. and Ostrovsky, L. A.

Abstract

Nonlinear acoustic effects associated with collective dynamics of bubbles in a liquid are considered in this article. The mechanism of nonlinearity is caused by the variation of the bubble concentration in space due to bubble drift under the effect of radiation pressure and hydrodynamic (Bjerknes) forces (the latter may result in bubble coalescence). First, the individual behavior of a bubble or a pair of bubbles in an acoustic field is considered. Second, kinetic equations for the bubble distribution function in an acoustic field are derived, and, third, different effects of sound propagation are discussed. They include some steady-state and transient ''envelope waves'' propagating together with ''concentration waves.'' A simple model of ''nonlinear transparency'' in acoustics, which is in qualitative agreement with experimental results, is touched upon. A harmonic wave in a medium with homogeneous bubble distribution is shown to be unstable, and may possibly result in such effects as wave front conjugation, self-focusing of sound, and, probably, the formation of bubble groups. [ABSTRACT FROM AUTHOR]

Published
1989
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100. NEW SCHEMES OF OCEAN ACOUSTIC TOMOGRAPHY.

Author

SHANG, E. C., VORONOVICH, A. G., WANG, Y. Y., NAUGOLNYKH, K., and OSTROVSKY, L.

Subjects
OCEAN tomography, OCEAN dynamics, MESOSCALE eddies
Published
2004

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