Results 261 to 270 of about 45,052 (312)
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Ultrasonic Waves and Electrochemistry. III. An Electrokinetic Effect Produced by Ultrasonic Waves
The Journal of the Acoustical Society of America, 1953If a wire covered with a fiber or a porous coating is submerged in a dilute electrolytic solution and irradiated with ultrasonic waves, an alternating potential of the same frequency is produced on the wire relative to the bulk of the surrounding solution.
Harry Dietrick +3 more
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The Journal of the Acoustical Society of America, 1953
The applications of ultrasonic waves in electrochemistry are discussed in terms of (1) the effects of ultrasonic waves on electrode processes, (2) electrokinetic phenomena involving ultrasonic waves, and (3) the use of ultrasonic waves as a tool in the study of the structure of electrolytic solutions.
Ernest Yeager, Frank Hovorka
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The applications of ultrasonic waves in electrochemistry are discussed in terms of (1) the effects of ultrasonic waves on electrode processes, (2) electrokinetic phenomena involving ultrasonic waves, and (3) the use of ultrasonic waves as a tool in the study of the structure of electrolytic solutions.
Ernest Yeager, Frank Hovorka
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The Journal of the Acoustical Society of America, 1984
An ultrasonic wave probe comprises an ultrasonic wave transmitting vibrator and a pair of ultrasonic wave receiving vibrators in order to measure blood flow velocity. The receiving vibrators are adapted to receive reflected waves of an ultrasonic wave which is emitted from the transmitting vibrator and reflected from a measured point at different ...
Mitio Ohno +5 more
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An ultrasonic wave probe comprises an ultrasonic wave transmitting vibrator and a pair of ultrasonic wave receiving vibrators in order to measure blood flow velocity. The receiving vibrators are adapted to receive reflected waves of an ultrasonic wave which is emitted from the transmitting vibrator and reflected from a measured point at different ...
Mitio Ohno +5 more
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Ultrasonic wave interferometers
The Journal of the Acoustical Society of America, 1995An acoustic or ultrasonic device includes two ultrasonic energy transmission paths having substantially identical transmission characteristics for a neutral condition of the device. One or both of the transmission paths include path altering structure(s) or coating(s) for changing the transmission characteristics of one or both of the paths in response
Allen H. Meitzler, Edward N. Sickafus
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Ultrasonic guided waves in bone
The Journal of the Acoustical Society of America, 2008Recent progress in quantitative ultrasound (QUS) has shown increasing interest towards measuring long bones by ultrasonic guided waves. This technology is widely used in the field of non-destructive testing and evaluation of different waveguide structures.
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Contemporary Physics, 1969
Abstract This paper begins with a general discussion of wave propagation in a fluid followed by an account of the accompanying attenuation and relaxation effects. The attenuation and relaxation effects due to viscosity, heat conduction and molecular processes are then discussed in some detail.
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Abstract This paper begins with a general discussion of wave propagation in a fluid followed by an account of the accompanying attenuation and relaxation effects. The attenuation and relaxation effects due to viscosity, heat conduction and molecular processes are then discussed in some detail.
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On Scattering of Ultrasonic Waves
2003We report investigations regarding the possibility for improving ultrasonic imaging by an analysis of pulse deformations. Starting with a stochastic solution of the lossy wave equation, we present a general approach for perturbing stochastic processes on Lie groups by a Poisson process. Applications to radiation transport are indicated.
Peter Mathé +1 more
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Generation of ultrasonic replica wave packets
Physical Review B, 1985Conduction electrons on closed orbits in pure copper single crystals at low temperatures can interact with an ultrasonic wave packet to produce replicas of the wave packet nearby. Measurements of the ratio of replica amplitude to primary amplitude for magnetic fields between 50 and 260 G are reported.
, Kost, , Gavenda
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Ultrasonic waves: their interferometric measurement and display
Applied Optics, 1976A system for the measurement and visualization of small displacements has been developed that features high sensitivity and acoustic-wavelength-limited resolution over apertures as large as 15 cm at frequencies up to 10 MH(z). Acoustic-wave displacement amplitudes as small as 0.07 A are measured by interferometrically detecting the motion of a thin ...
R, Mezrich, D, Vilkomerson, K, Etzold
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Ultrasonic Wave Propagation in Heterogeneous Media
AIP Conference Proceedings, 2010Piezoelectric ultrasonic transducers typically employ composite structures to improve their transmission and reception sensitivities. The geometry of the composite is regular with one dominant length scale and, since these are resonant devices, this dictates the central operating frequency of the device. In order to construct a wide bandwidth device it
Anthony J. Mulholland +3 more
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