Xing Xia

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The diversity of microbial metabolites has been of interest and concern for a long time, yet a suitable method for discovering these is still unavailable. In the work discussed in this report, ultra-performance liquid chromatography coupled with tandem quadrupole and time of flight high-resolution mass spectrometry (UPLC-Q-TOF-HRMS), with MS data analysis,(More)
The expression of Ferroportin (Fpn) was examined at different time points in rats following focal cerebral ischemia treated with or without the traditional Chinese medicine Naotaifang. Initially, rats were randomly divided into 2, 6, 12, 24 and 72 h groups following middle cerebral artery occlusion (MCAO) and the mRNA and protein level of Fpn was detected(More)
A novel sesquiterpenoid (1) and three known compounds identified as isoaltenuene (2), altenuene (3), and alternariol 4, 10-O-dimethyl ether (4), were isolated in our investigation of the cytotoxic constituents from solid cultures of the endophytic fungus Colletotrichum sp. The structures of these compounds were elucidated through spectroscopic data(More)
Mobile IPv6 is considered to be one of the key technologies for realizing mobile Internet which enables seamless communication between fixed line and wireless access networks. In this paper, we introduce the basic concept of Mobile IPv6 and describe the detail procedure of handoff of mobile terminal. We analyze its effectiveness of Mobile IPv6 handoff by(More)
The general situation of the approved and concluded projects of National Natural Science Foundation of China in the field of processing Chinese Materia Medica in recent five years has been reviewed. The progresses and achievements of some projects have been summarized in accordance with research area such as the processing principle, the processing(More)
Several magnetic fluorescence nanocomposites were presented. The particles exhibit intense fluorescence and large MR T2-weight values with CdSe depositing on Fe3O4 nanoparticles layer-by-layer to form Fe3O4/CdSe nanocomposites. The fluorescence of different layered nanocomposites was studied and the intensity was found to increase greatly with the(More)
OBJECTIVE To establish a methotrexate (MTX)-resistant choriocarcinoma cell line and to determine its biologic characteristics. METHODS MTX-resistant cell line (JAR/MTX) was derived from human choriocarcinoma cell line JAR by exposed to intermittently and progressively increasing concentration of MTX. Drug sensitivity was detected by MTT; P-gp GST-Pi and(More)
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