Practice Problems: Using a few scenarios of a person hearing a train at a train station, practice this complex formula. The cues of using the observer's velocities or sound source will be in italics. Example 1: While sitting on a bench, a train passes by a man. If the train blows a...
The Doppler Effect is a well-known phenomenon in which the motion of the source of a sound in relation to a receiver causes an apparent change in the frequency of the sound that can be measured. From: Journal of Membrane Science, 2017 ...
The possibility of predicting and monitoring fetuses with intrauterine growth restriction by Doppler velocimetry of the umbilical artery has led to the establishment of this method in daily clinical practice. However, the fetal aorta is also very important for the evaluation of high-risk fetuses in ...
Moreover, oblique incidence problems are also studied in practice, which can be used for relieving multipath effect. In the microwave experiment, we fabricate the intelligent spatiotemporal metasurfaces and demonstrate the potential to fulfill Doppler-offset beamforming under oblique incidence....
Moreover, oblique incidence problems are also studied in practice, which can be used for relieving multipath effect. In the microwave experiment, we fabricate the intelligent spatiotemporal metasurfaces and demonstrate the potential to fulfill Doppler-offset beamforming under oblique incidence. 展开 ...
In the last 2 decades, MCA and CPR Doppler measurements have evolved and gradually become more integrated into the clinical practice [28]. Given that 80% of fetal cerebral blood carried by it, in addition of being easily accessible by ultrasound, MCA has become the gold standard vessel for ...
Very and extremely preterm infants frequently have brain injury-related long-term neurodevelopmental problems. Altered perfusion, for example, seen in the context of a hemodynamically significant patent ductus arteriosus (PDA), has been linked to injury
The SonoScape S60 adopts the intelligent Wis+ platform to help ultrasound professionals acquire and interpret ultrasound images more efficiently and precisely. It is a premium system that keeps your practice at the forefront of ultrasound examinations and ...
The Doppler frequency shift almost has no effect on satellite communications. Since the height of the satellite makes the coverage very broad, almost no handover is needed. However, blind spots exist in its coverage area where there are tall city buildings, rugged mountains, and tunnels. In ...
The techniques require considerable practice, patience, and skill. Because of such marked operator dependence, transcranial Doppler is not universally recommended. View chapterExplore book Diagnostic Strategies in Neonates, Children, and Young Adults with Stroke Deborah K. Sokol, Hema Patel, in Stroke ...