Results 261 to 270 of about 1,480,448 (310)

Thermal petiole wounding triggers trap closure in <i>Dionaea muscipula</i>. [PDF]

Plant Signal Behav
Bergstrom N, Helfrich P.
europepmc   +1 more source

Metabolite-Specific Reproducibility of Cerebral ³¹P-MRS at 3 T: Implications for Clinical Research. [PDF]

NMR Biomed
Svensen M, Dölle C, Brakedal B, Berven H, Brekke N, Craven AR, Sheard EV, Hjellbrekke A, Skjeie V, Seland JG, Tzoulis C, Riemer F.   +11 more
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Acoustic Amplitude Ratio Logging

Journal of Petroleum Technology, 1964
Abstract A calibration system is obtained that permits correlation of amplitude data from borehole to borehole regardless of composition of hole fluid, hole diameter, or other both-derived parameters. Two-receiver attenuation logging provides better interpretation of acoustic cement bond logs because of this calibration system.
W.L. Anderson, G.A. Riddle
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Maturation of the electroretinogram in children: stability of the amplitude ratio

Electroencephalography and Clinical Neurophysiology/Evoked Potentials Section, 1996
We report the method and results of mesopic electroretinogram (ERG) recording by corneal electrode in 75 children aged from 0 to 15 years. This method gives an overall evaluation of the electrical activity of the retina in a rapid and acceptable manner, in the awake state and without sedation. The a- and b-waves were present at birth.
R, Flores-Guevara, F, Renault, C, Ostré, P, Richard   +3 more
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A graph for calculating amplitude ratios

Journal of Electrocardiology, 1978
Summary A simple graph, making possible an instant read-out of Q/R and S/R amplitude ratios, is presented.
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Direct Measuring the Amplitude Ratios of Weakly Coupled Resonators Employing Automatic Amplitude Control

IEEE Transactions on Instrumentation and Measurement, 2021
Since the eigenstate-modulated weakly coupled resonators (WCRs) characterize the detected signals by measuring the amplitude ratios of weakly coupled resonant units, the convenient and accurate extraction of amplitude ratios becomes critical for high-performance applications of all mode-localized sensors.
Xin Guo 0011, Bo Yang 0019, Cheng Li 0019, Zhuoyue Liang, Yongchang Jiang   +4 more
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A Maximal Afterpulse Amplitude-to-Main Pulse Amplitude Ratio in a Photomultiplier Tube

Instruments and Experimental Techniques, 2002
An amplitude dependence of afterpulses caused by an ion feedback on the main pulse amplitudes in a photomultiplier tube is studied. It has been found that a maximal afterpulse amplitude-to-maximal main pulse amplitude ratio is inversely proportional to the main pulse amplitude.
V. A. Morozov, N. V. Morozova
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Degradation of signal-to-noise ratio due to amplitude distortion

IEEE Transactions on Information Theory, 1989
The effect of filtering on the signal-to-noise ratio (SNR) of a coherently demodulated band-limited signal is determined in the presence of worst-case amplitude ripple. The problem is formulated as an optimization in the Hilbert space L/sub 2/. The form of the worst-case amplitude ripple is specified, and the degradation in the SNR is derived in closed
Ramin Sadr, Mehrdad Shahshahani, William J. Hurd   +2 more
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BAEP amplitudes and amplitude ratios: relation to click polarity, rate, age and sex

Electroencephalography and Clinical Neurophysiology, 1991
BAEP amplitudes and amplitude ratios in 47 healthy subjects aged 4-58 years have been investigated with respect to the simultaneous influence of stimulus polarity, rate, sex and age. The sex effect (larger amplitudes in women than in men) seemed to be most pronounced for wave IV-V amplitude, while the age effects (decreasing amplitudes with age) seem ...
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Universality in surface growth: Scaling functions and amplitude ratios

Physical Review A, 1992
A scaling analysis of a variety of nonlinear equations for surface growth is presented. It predicts the existence of universal scaling functions and amplitude ratios for the surface width w(L,t) on length scale L at time t and for the height-difference correlation function G(x,t).
, Amar, , Family
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