نتایج جستجو برای: peak wave period
تعداد نتایج: 819965 فیلتر نتایج به سال:
detection of the R-wave and dZ/dt-min peaks does not adequately reflect the actual PEP across a wide range of laboratory and ambulatory conditions. Abstract The current study evaluates the validity of the PEP computed from a fixed value for the Q-wave onset to R-wave peak (QR) interval and an R-wave peak to B-point (RB) interval that is estimated from the R-peak to dZ/dt-min peak (ISTI) interva...
A field experimental study of the spectral balance of the source terms for wind-generated waves in finite-depth water was carried out in Lake George, Australia. The measurements were made from a shore-connected platform at varying water depths from 1.2 m down to 20 cm. Wind conditions and the geometry of the lake were such that fetch-limited conditions with fetches ranging from approximately 10...
Background: Certain types of the early repolarization (ER) phenomenon, previously considered to be benign, have been reported to be associated with ventricular fibrillation (VF), both in population-based studies and in the myocardial infarction (MI) settings. Objective: Our aim was to analyse whether QRS widening and appearance of Jwave-pattern in experimental MI settings is predictive of VF. M...
We propose a coupled-mode theory for resonant diffraction gratings with varying period. consider diffractive structures, in which the reciprocal lattice vector, quantity inversely proportional to period, varies linearly direction of periodicity. It is shown that optical properties such structure essentially depend on period change rate. On basis comparison results rigorous numerical simulations...
BACKGROUND To investigate flow in the ductus venosus at 11-13 + 6 weeks of gestation in women with normal pregnancies in the Taiwanese population. METHODS Two hundred and fifty-two normal singleton pregnancies with gestational ages ranging from 11 to 13 + 6 weeks were examined in this study. The pulsatility index for veins (PIV), resistance index (RI), peak velocity during ventricular systole...
We evaluated the characteristics of left ventricular diastolic hemodynamics in hypertrophic cardiomyopathy (HCM) by measuring left ventricular inflow (LVIF) and pulmonary venous flow (PVF) velocities in 62 patients with asymmetric septal hypertrophy and 34 normal controls. The patients were divided into four groups according to the LVIF pattern and left ventricular end-diastolic pressure (LVEDP...
ERGs were recorded under darkand light-adapted conditions from the corneal surface of C57BL/6J wild type mice, BALB/c wild type mice, 129/SvJ wild type mice and Large mice. The analytic steps for b-wave parameter measurement were to (a) use a low pass filter to eliminate the oscillatory potentials (Ops), (b) to detect the b-wave maximum, (c) to measure b-wave amplitude from the minimum of the u...
This study attempts to investigate the influence of dynamic soil properties uncertainties on ground response analysis via a case site. For this purpose, nonlinear time-domain and in parameters are coupled simultaneously using coded program MATLAB. To take full advantage real data, two investigation boreholes drilled The is performed deterministically then extended stochastic context order into ...
A new precision peak detector/full-wave rectifier of input sinusoidal signals, based on usage of dual-output current conveyors, is presented in this paper. The circuit gives a DC output voltage that is the peak input voltage over a wide frequency range, with a very low ripple voltage and low harmonic distortion. The proposed circuits use an all-pass filter as a 90 ̊ phase shifter of the processe...
ED P RO OF Abstract We examine the magnetospheric wave power in the Pc3–Pc5 range in terms of its growth and decay characteristics and its distribution in L shell in response to the interplanetary plasma bulk velocity, VSW. We use linear and nonlinear (rank-order) correlation and filtering methods to quantify the effective coupling of the wave power to VSW variations. These methods are applied ...
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