Results 271 to 280 of about 241,409 (296)

Hydraulic Transients: A Seismic Source in Volcanoes and Glaciers

Science, 1979
A source for certain low-frequency seismic waves is postulated in terms of the water hammer effect. The time-dependent displacement of a water-filled subglacial conduit is analyzed to demonstrate the nature of the source. Preliminary energy calculations and the observation of hydraulically generated seismic radiation from a dam indicate the ...
W S, Lawrence, A, Qamar
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The Burst and Transient Source Experiment

Space Programs and Technologies Conference and Exhibit, 1993
The Burst and Transient Source Experiment (BATSE) is one of four experiments 011 the Compton Gamma Ray Observatory (GRO), which was launclied into a 450-!a orbit on April 5, 1991. BATSE was designed primarily for the study of gamma-ray bursts, unexplained flashes of celestial g a m m a r ys tliat last from a fraction of a second to over 100 secouds and
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Response of plates to transient sources

Journal of Sound and Vibration, 1974
A method of treating the response of an infinite plate to a transient load, under plane strain conditions, is proposed. The final solution is given in the form of an infinite series of integrals. Each term of the series is readily evaluated by Cagniard's technique and only a finite number of terms are required to determine the state of stresses for any
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Acoustic intensity measurements of transient noise sources

The Journal of the Acoustical Society of America, 1980
The theoretical background to the measurement of sound energy flow generated by transient sources, such as impact machines, will be presented. Various means of implementing the estimation process will be discussed and reference will be made to the problems of field measurement.
F. J. Fahy, S. J. Elliott
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Switching Transients Using Injection of Sources

2021
This chapter presents another methodology for the study of transient phenomena caused by the opening or closing of one or more switches, in circuits that are or are not operating in a steady-state, before switching. It is a technique applicable, preferably, to linear circuits and invariant over time, and whose principle is to simulate the closing of a ...
José Carlos Goulart de Siqueira, Benedito Donizeti Bonatto   +1 more
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Energy materials for transient power sources

MRS Bulletin, 2020
Abstract
Jia, Xiaoteng, Wang, Caiyun, Lee, Chong Yong, Yu, Changchun, Wallace, Gordon G   +4 more
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Transient Acoustical Sources in an Idealized Jet

The Journal of the Acoustical Society of America, 1972
The transmission of acoustic disturbances from the interior of the jet through the mean velocity profile and into the farfield is studied in detail. The noise generator is taken to be a sequence of transient acoustical point sources traveling with the local fluid in the idealized jet.
E. W. Graham, B. B. Graham
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A Transient Magnetic Dipole Source in a Dissipative Medium

Journal of Applied Physics, 1953
The solution is given for the electric field of a small current-carrying loop which is immersed in a dissipative medium and is energized by a step-function current. Approximate expressions for the magnetic fields are also derived. The propagation of an electromagnetic pulse in sea water is then discussed.
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Parametric acoustic sources of transient signals

The Journal of the Acoustical Society of America, 1979
A theoretical treatment is formulated for transient, or broadband, parametric acoustic sources, i.e., parametric sources using an arbitrarily modulated primary carrier signal. This treatment makes use of previously calculated characteristics for steady-state, or narrow-band, parametric sources. The theory does not include saturation effects.
Peter Mello, Mark B. Moffett
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Transient waves generated by a source on a circle

Journal of Physics A: Mathematical and General, 1994
Summary: The solutions of the inhomogeneous wave equation are obtained. The source is distributed on a circle at rest or moving with a constant velocity. The wavefunction is found as a series of transient modes by means of incomplete separation of variables, the Riemann formula, and the integrals containing three Bessel functions.
Borisov, Victor V., Simonenko, Irina I.
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