Results 271 to 280 of about 315,886 (312)
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The Painleve test for the drift-wave equation
Plasma Physics and Controlled Fusion, 1991When making a formal Laurent expansion for the solution of the one-dimensional drift-wave equation it is found that a compatibility condition is not satisfied. Thus the drift-wave equation does not pass the Painleve test.
He, K., Salat, A.
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LANDSTREAMERS AND SURFACE WAVES: TESTING AND RESULTS
19th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems, 2006Surface wave data acquisition by landstreamer with flat baseplates produces nearly identical dispersion curves to that from planted geophones. Dependence on geophone frequency and good coupling is negligible and repeatability is fair. ‘Pseudo’ 2D profiling using 1D inversion at high shot density produces accurate subsurface images. However, ‘pushing’ a
Adam O'Neill +2 more
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Design and Test of a Submillimeter-Wave Backward Wave Oscillator
AIP Conference Proceedings, 2006Calabazas Creek Research, Inc. is funded by the National Aeronautics and Space Administration to develop submillimeter‐wave backward wave oscillators (BWOs) for spectroscopy of planetary atmospheres, nebulas, and comets. Recently, applications related to detection of biological, chemical, and explosive agents have been identified.
R.L. Ives +9 more
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Latest Tests of a Submillimeter-Wave Backward Wave Oscillator
2006 Joint 31st International Conference on Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006A 600-700 GHz BWO is currently being rebuilt for testing. Previous tests identified problems with the cathode and materials used in the structure. These were addressed and the BWO is now being assembled for testing in July 2006. The modifications to the design are described and test results will be presented.
R. L. Ives +6 more
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Latest Test of a Submillimeter-Wave Backward Wave Oscillator
2006 IEEE International Vacuum Electronics Conference held Jointly with 2006 IEEE International Vacuum Electron Sources, 2006A 600-700 GHz backward wave oscillator is under development for the National Aeronautics and Space Administration for molecular spectroscopy. Previous tests identified problems with the cathode and magnetics circuit, which were corrected in the most recent version.
L. Ives +8 more
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1987
Several independent efforts have been undertaken in recent years to test whether long waves can be identified in time series from various countries on industrial production or on national product. Various methods have been applied to analyze long waves in empirical data.
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Several independent efforts have been undertaken in recent years to test whether long waves can be identified in time series from various countries on industrial production or on national product. Various methods have been applied to analyze long waves in empirical data.
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Tests of continuum distorted waves
Radiation Physics and Chemistry, 2005Abstract Continuum distorted waves have proved useful for the computation of one-electron ion-atom collision processes. Despite this success, approximations based on these functions have not proved reliable for ionization processes involving electron collisions.
J.H. Macek, S. Jones
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Model Testing in Multidirectional Waves
Marine Technology and SNAME News, 1983Capabilities for generating waves in model basins have advanced from unidirectional regular waves to unidirectional random waves and recently in several facilities to multidirectional regular and random waves. The history of this development is reviewed briefly. The motivation for conducting model tests in multidirectional waves is discussed along with
F. N. Biewer, J. T. Dillingham
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Test wave coexisting with a large amplitude electron plasma wave
The Physics of Fluids, 1973When a small test wave is launched near the frequency of a large amplitude electron plasma wave, the behavior of the test wave is determined by the nonlinear dynamics of the electrons that are trapped by the large amplitude wave. Consequently, the amplitude of the test wave oscillates coherently with the trapping oscillations in the amplitude of the ...
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DISPERSANT TESTS IN A WAVE BASIN
International Oil Spill Conference Proceedings, 1985ABSTRACT Using dispersants to mitigate oil spills has remained controversial, despite considerable testing, in both the laboratory and the field. One of the major concerns, which has not been satisfactorily resolved, is how effective various dispersants are on different oils over a range of environmental conditions.
M. R. MacNeill +4 more
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