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In the light of the characteristics of DC partial discharge, a set of typical DC partial discharge simulation model in the converter transformer was designed and built. This paper applies non-electrical measuring methods :ultrasonic sensor and photoelectric detection means such as photomultiplier tube (PMT) to test the partial discharge signals. Non-electrical measuring methods have strong ability...
The purpose of this study was to assess the value of double contrast-enhanced ultrasound (DCUS), in which intravenous microbubbles are used together with an oral contrast agent as a method to evaluate the microvascular density (MVD) of gastric cancer, and its relationship with the contrast-enhanced intensity (EI) in gastric carcinomas. Sixty-nine patients with gastric cancer were examined preoperatively...
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