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The radiated noise (as the signal) emitted by a moving sound source arrives at a stationary single hydrophone via a direct path and the surface-reflected path. The difference in the time delay of arrival of the direct path and surface-reflected path, referred to as the D-SR time delay, provides an instantaneous estimate of the motion parameter of a radial moving source in the reliable acoustic path...
Model of echo-to-interference ratio of bistatic sonar in shallow water was set up. Transmission loss of direct blasts at receiver were calculated with coherent multipaths transmission model based on ray theory in shallow water. Bistatic target strength of Simple BeTSSi-submarine versus azimuthal and bistatic angles were obtained by using Kirchhoff approximation; reverberation levels are calculated...
Ghrelin, a peptide hormone isolated from the stomach, releases growth hormone and stimulates appetite. Ghrelin is also expressed in pancreas, kidneys, cardiovascular system and in endothelial cells. The precise role of ghrelin in endothelial cell functions remains unknown. We examined the expression of ghrelin and its receptor (GHSR1) mRNAs and proteins in human microvascular endothelial cells (HMVEC)...
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