He Rong

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Two new compounds, isostreptazolin (1) and sannaphenol (2), were isolated from the culture broth of Streptomyces sannanensis and their structures elucidated on the basis of 1D and 2D NMR as well as MS, IR and UV spectroscopic data analysis. The cytotoxic activity of 1 and 2 were evaluated. Both compounds were inactive against H460 and HeLa cell lines at 100(More)
In the four-wheel tumbler test bench of semi-freedom noise elimination chamber,test the noise and vibration characteristics of a new pure electrical automobile (PURE EV), and collect noise and vibration signals of moving parts in different speeds. Analyze the frequency distribution of internal noise and vibration. The signal analysis shows noise sources of(More)
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