Optical-flow (OF) velocimetry is based on extracting velocity information from two-dimensional scalar images and represents an unseeded alternative to particle-image velocimetry in turbulent flows. The performance of the technique is examined by direct comparison with simultaneous particle-image velocimetry in both an isothermal turbulent flow and a turbulent flame by use of acetone-OH laser-in...

OBJECTIVES To evaluate placental volume and vascular indices in pregnancies with severe fetal growth restriction and determine their correlations to normal reference ranges and Doppler velocimetry results of uterine and umbilical arteries. METHODS Twenty-seven fetuses with estimated weights below the 3rd percentile for gestational age were evaluated. Placental volume and vascular indices, inc...

Soap film flows that have attracted the attention of researchers since the mid-Eighties appear to present a convenient model for laboratory studies of 2D hydrodynamics including turbulence. However, two important issues associated with turbulence in soap films have not been resolved until recently. First, are there conditions under which direct evidence of enstrophy cascade can be presented? Se...

BACKGROUND AND AIMS Topical glucocorticoid formulations are widely used for effective treatment and control of a variety of dermatoses. Mometasone furoate is a newer corticoid that has high potency but low systemic toxicity. Pharmaceutical factors are known to significantly influence potency and systemic absorption of topically applied glucocorticoids. We studied the potency of "Elocon", a topi...

STUDY QUESTION Can uterine scar healing after laparoscopic intracapsular myomectomy (LIM) be adequately monitored by traditional two-dimensional (2D) ultrasound (US) and Doppler velocimetry? SUMMARY ANSWER The myometrial area of the scar after LIM can be followed by 2D US and Doppler velocimetry. WHAT IS KNOWN ALREADY Apart from post-surgical adhesions, the main concern linked to laparoscop...

Human beings spend most of their lifetime indoors. Monitoring indoor airflow in buildings is a matter of health safety, and energy savings. Regarding health safety it is proven that exposure to aerosol pollution like walls and painting material residues, gasses emitted through cooking and heating with biomass fuel, or agricultural residues can result in aggravated health damages for the occupan...

This work presents an analysis of the inner boundary secondary flow (i.e., corner vortex flow) in entrance region a rectangular slit channel for long-chain-branched polyethylene melt evaluated using particle tracking and stress-induced birefringence measurements. Further, flow-induced technique was used to investigate effects temperature shear rate on size entry flow. Obtained results trends we...

velocity vector fields by ultrasound particle imaging velocimetry: in vitro comparison with optical flow velocimetry. blood flow patterns in normal subjects: a quantitative analysis by three-dimensional magnetic resonance velocity mapping. A new echo-cardiographic method for identifying vortex flow in the left ventricle: numerical validation.dimensional intraventricular flow mapping by digital ...