Xu Yi

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Optical frequency division by using frequency combs has revolutionized time keeping and the generation of stable microwave signals. We demonstrate optical frequency division and microwave generation by using a tunable electrical oscillator to create dual combs through phase modulation of two optical signals that have a stable difference frequency.(More)
Consumption of alcohol is closely related to liver disease, such as hepatic fibrosis or even hepatocellular carcinoma (HCC). However, epidemiological and experimental studies indicated that consumption of Maotai, one of the famous liquors in China, exhibits no significant correlation with hepatic fibrosis or cirrhosis as other beverage sources do. This(More)
Arthrospira (Spirulina) platensis (ASP) is a representative filamentous, non-N2-fixing cyanobacterium that has great potential to enhance the food supply and possesses several valuable physiological features. ASP tolerates high and low temperatures along with highly alkaline and salty environments, and can strongly resist oxidation and irradiation. Based on(More)
The title compound, C(12)H(14)N(2)O(3), was synthesized as an inter-mediate for the synthesis of metamitron. The benzene ring forms dihedral angles of 86.3 (2) and 10.0 (3)° with the ethyl group and the acetyl-imino plane, respectively. The crystal structure involves inter-molecular C-H⋯O and N-H⋯O hydrogen bonds.
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