Showing papers by "Xiaogang Liu published in 1999"
TL;DR: In this article, the effect of external feedback on random laser action in ZnO polycrystalline thin films was studied, and the authors showed that external feedback from the side of the film and that from the film surface can significantly influence the laser frequency.
Abstract: We have studied the effect of external feedback on random laser action in ZnO polycrystalline thin films. Reinjection of light into scattering-formed cavities strongly influences modes, intensity, and threshold of random lasers. We have compared the effect of external feedback from the side of the film and that from the film surface. Our study opens the possibility of controlling random laser frequencies by external feedback.
50 citations
Journal Article•
TL;DR: The results showed that Macleaya cordata could improve liver function of acute hepatic injuries in rats caused by tetrachloromethan or galactoslmine and enhanced the function of T and B lymphocytes.
Abstract: The pharmacodynamic effect of Macleaya cordata was investigated in this study. The results showed that Macleaya cordata could improve liver function of acute hepatic injuries in rats caused by tetrachloromethan or galactoslmine. Macleaya cordata could lessen the level of serum LDH and mortality of rats, increase ratio of serum A/G, protect cellular membrane efectively and inhibit fibrosis in rats with chromic heptic injury caused by tetrachloromethane. Macleaya cordata still enhanced the function of T and B lymphocytes.
4 citations