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WebFeb 13, 2024 · A piezoelectric dynamic pressure transducer and a microphone was used to measure the self-excited high-frequency pressure oscillations and noise in a hydraulic jet pipe servo-valve, which showed that high-frequency pressure oscillations are produced by the shear-layer instability inside the flow field between the jet pipe and the two receiving ... WebMay 10, 2024 · The device is a time-cycled, pressure-controlled infant ventilator that continuously monitors airway pressure and automatically adjusts the pressure that drives … graphic bath towels
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