Results 241 to 250 of about 359,409 (274)

Identifying Out-of-Voxel Echoes in Edited MRS With Phase Cycle Inversion. [PDF]

Magn Reson Med
Shams Z, Gad A, Gudmundson AT, Murali-Manohar S, Davies-Jenkins CW, Simegn GL, Simicic D, Song Y, Yedavalli V, Zöllner HJ, Oeltzschner G, Senapati DK, Schnitzler A, Barker PB, Edden RAE.   +14 more
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Non-Invasive Regional Neurochemical Profiling of Zebrafish Brain Using Localized Magnetic Resonance Spectroscopy at 28.2 T. [PDF]

Molecules
Singer R, Hu W, Liu L, de Groot HJM, Spaink HP, Alia A.   +5 more
europepmc   +1 more source

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Shot-noise suppression in resonant tunneling

Physical Review B, 1995
Substantial shot-noise suppression has been observed in a series of asymmetric double-barrier resonant-tunneling diodes. The suppression is only seeen in the voltage range where the peak resonant-tunneling transmission coefficient is near unity and where there is a large charge buildup in the quantum well; in other voltage ranges, full shot noise is ...
Liu, H.C., Li, Jianmeng, Aers, G.C., Leavens, C.R., Buchanan, M., Wasilewski, Z.R.   +5 more
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Adaptive stabilization and resonance suppression

International Journal of Control, 1990
Control systems can drift into instability or, less catastrophically, exhibit resonance behaviour. One role for adaptive controllers is to learn sufficient information concerning the dominant closed-loop system mode so as to apply effective feedback to dampen these modes. In such situations the adaptive loop augments the fixed controller feedback loop.
ANDREW J. TELFORD, JOHN B. MOORE
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Active suppression of acoustic resonance

The Journal of the Acoustical Society of America, 1987
The minimization of acoustic potential energy has been proposed as a method of actively controlling a harmonic reverberant sound field. In this paper an analysis of plane waves in a finite length duct provides insight into the physical mechanisms of this method and allows comparison with two other methods, the acoustical virtual earth and the absorbing
Curtis, A. R.D., Nelson, P. A., Elliott, S. J., Bullmore, A. J.   +3 more
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Surface-suppressed electron resonance spectroscopies

The Journal of Chemical Physics, 1986
Surface-suppressed electron resonance spectroscopies (SSERS) refers to the phenomenon in which stable paramagnetic radicals adsorbed on clean (noble) metal surfaces have their ESR signal suppressed. This phenomenon is studied in some detail by ultra-high-vacuum ESR (UHV-ESR) and cyclotron resonance from microwave-induced secondary electron emissions ...
P. Glenn Barkley, Joseph P. Hornak, Jack H. Freed   +2 more
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Fibers with resonant mode suppression

SPIE Proceedings, 2007
Noise can limit the power in a fiber amplifier by competing with the signal for gain. Disributed filtering offers a way of overcoming current high-power limitations by selectively removing noise before it is amplified. Resonant mode suppression is a flexible strategy for wavelength filtering as well as suppression of unwanted transverse modes. An Yb-
J. M. Fini, M. D. Mermelstein, M. F. Yan, R. T. Bise, A. D. Yablon, P. W. Wisk, M. J. Andrejco   +6 more
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