Dan-ni Chen

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The present study was designed to develop and validate a sensitive and reliable ultra high performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC-QTOF/MS) method to separate and identify the chemical constituents of Qixue Shuangbu Tincture (QXSBT), a classic traditional Chinese medicine (TCM) prescription. Under the(More)
Human heart sound signals has the characteristics of strong noise, slight signal, strong randomness and vulnerability to outside interference. Accordingly we design a heart sound detection system based on the new XH-6 sensor to collect the slight heart sound signals, to display in real-time and to save the phonocardiogram. Measurement on different(More)
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