Results 71 to 80 of about 1,897 (169)

Subharmonic behavior of phospholipid-coated ultrasound contrast agent microbubbles.

, 2010
International audienceCoated microbubbles, unlike tissue are able to scatter sound subharmonically. Therefore, the subharmonic behavior of coated microbubbles can be used to enhance the contrast in ultrasound contrast imaging.
Michel Versluis, Versluis, M, Benjamin Dollet, Dollet, Benjamin, Sijl, J., Sijl, J, Lohse, D., Overvelde, M.L.J., de Jong, N., Valeria Garbin, Versluis, M., Nico de Jong, Lohse, D, Jeroen Sijl, Sijl, Jeroen, Jong, Nico, Garbin, V., Garbin, Valeria, Overvelde, Marlies, Versluis, Michel, Dollet, B., Marlies Overvelde, Overvelde, M, Rozendal, Timo, Rozendal, T, Detlef Lohse, Dollet, B, Timo Rozendal, Lohse, Detlef, Versluis, M.; id_orcid, de Jong, Nico, Rozendal, T., Garbin, V, deJong, Nico   +33 more
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Experimental investigation of the subharmonic emission from microbubbles using linear and nonlinear frequency modulated signals [PDF]

, 2010
In medical ultrasound imaging, coded excitation is widely used to increase signal to noise ratio (SNR) and penetration without increasing the peak pressure level by using longer pulse durations.
Steven Freear, Freear, S, Harput, S, Muhammad Arif, Sevan Harput, Arif, M   +5 more
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Hessian measures in the class of m-convex (m - cv) functions

Қарағанды университетінің хабаршысы. Математика сериясы
The theory of m-convex (m − cv) functions is a new direction in the real geometry. In this work, by using the connection m − cv functions with strongly m-subharmonic (shm) functions and using well-known and rich properties of shm functions, we show a ...
M.B. Ismoilov, R.A. Sharipov
doaj   +1 more source

QUASI-NEARLY SUBHARMONIC FUNCTIONS AND CONFORMAL MAPPINGS

, 2014
If ϕ is a conformal mapping and u is a quasi-nearly subharmonic function, then u ◦ ϕ is quasi-nearly subharmonic.
Vesna Kojić
core  

Trace of Multiplication Operator Restricted to Invariant Subspaces of some Weighted Bergman Space

Cumhuriyet Science Journal
Let ω be a logarithmically subharmonic weight that is radial and reproducing for the origin, and L_a^2 (D,ωdA) be the weighted Bergman space. Let f be a bounded holomorphic function on the open unit disc, I be a z-invariant subspace of L_a^2 (D,ωdA), and
Faruk Yılmaz
doaj   +1 more source

Analysis of the cavitating flow induced by an ultrasonic horn – Numerical 3D simulation for the analysis of vapour structures and the assessment of erosion-sensitive areas

EPJ Web of Conferences, 2014
This paper reports the outcome of a numerical study of ultrasonic cavitation using a CFD flow algorithm based on a compressible density-based finite volume method with a low-Machnumber consistent flux function and an explicit time integration [15; 18] in
Mottyll Stephan, Müller Saskia, Niederhofer Philipp, Hussong Jeanette, Huth Stephan, Skoda Romuald   +5 more
doaj   +1 more source

Positive Lyapunov exponent of discrete analytic Jacobi operator

Electronic Journal of Differential Equations, 2017
In this article, we study the Lyapunov exponent of discrete analytic Jacobi operator with a family of some mappings on the torus. By applying the theory of subharmonic functions, we prove that the Lyapunov exponent is positive, if the coupling number ...
Kai Tao
doaj  

ON PLURIHARMONICITY CRITERIA OF HARMONIC AND \(\mathcal M\)-HARMONIC FUNCTIONS IN THE ARBITRARY BALL OF \({\mathbb C}^{n}\)

Ural Mathematical Journal
This paper introduces the concept of \({\mathcal M}\)-harmonic function in an arbitrary ball  of  \({\mathbb C}^{n}\) and proves some criteria for pluriharmonicity of harmonic functions in this ball.
Mokhira D. Vaisova
doaj   +1 more source

Minimal subharmonic functions and related integral representations

, 2023
A Choquet-type integral representation result for non-negative subharmonic functions of a one-dimensional regular diffusion is established. The representation allows in particular an integral equation for strictly positive subharmonic functions that is ...
Çetin, Umut
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Dynamic manipulation of the subharmonic scattering of phospholipid-coated microbubbles [PDF]

, 2011
In this paper, the influence of a dynamic variation in the ambient pressure on the subharmonic response of phospholipid-coated microbubbles was investigated.
Calle, Samuel, Marielle Defontaine, Faez, T. (Telli), Renaud, G, Defontaine, M. (Marielle), de Jong, N., Calle, S, Jong, N. (Nico) de, Telli Faez, Nico de Jong, Faez, T, Guillaume Renaud, Samuel Calle, Renaud, G. (G.), Calle, S. (Samuel), Renaud, Guillaume, Defontaine, M, Faez, Telli, Defontaine, Marielle, Jong, Nico   +19 more
core   +1 more source