PURPOSE To evaluate the anthropometric characteristics of morbidity and mortality of premature newborns (NB) of hypertensive mothers according to the presence or absence of flow (DZ) or reverse (DR) diastolic flow in the dopplervelocimetry of the umbilical artery. METHODS A prospective study was conducted on preterm newborns of pregnant women with hypertension between 25 and 33 weeks of gesta...

We report on the dynamics and structure of the turbulent velocity field in a high-Rayleigh-number (Ra = 5.9 x 10(8))thermal convection cell with an aspect ratio of 4. Spectral density functions (measured with laser Doppler velocimetry) indicated the existence of a large-scale periodic component. The long-time mean flow field (measured with particle image velocimetry) revealed that the large-sca...

We suggest an approach to probing intermittency corrections to the Kolmogorov law in turbulent flows based on the autoregressive moving-average modeling of turbulent time series. We introduce an index Υ that measures the distance from a Kolmogorov-Obukhov model in the autoregressive moving-average model space. Applying our analysis to particle image velocimetry and laser Doppler velocimetry mea...

The recent explosive increase in the use of  uidic microelectromechanical systems (MEMS) has subsequently driven the development of  uidic measurement techniques capable of measuring velocities at length scales small enough to be of use in characterizing and optimizing these new devices. Recently, several techniques have demonstrated spatial resolutions smaller than 1001mbut larger than 101m....