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Rheum palmatum L. (Chinese rhubarb) is a highly regarded medicinal plant. Its dominant active constituents are anthraquinones including emodin, aloe-emodin, rhein, etc. Rhein naturally occurs in anthraquinone (1, 3, 8-trihydroxy-6-methyl anthraquinone), which is found in R. palmatum L. and related plants such as rhubarb. It has good antitumor,(More)
A new protocol is described for the conversion of heteroarene N-oxides to heteroarylphosphonates through in situ activation with bromotrichloromethane. The N-oxides of isoquinoline, quinoline, quinoxaline and 1,10-phenanthroline were fast transformed into the corresponding heteroarylphosphonates in up to 92% yield under mild conditions in the absence of(More)
Heat rate value is considered as one of the most important thermal economic indicators, which determines the economic, efficient and safe operation of steam turbine unit. At the same time, an accurate heat rate forecasting is core task in the optimal operation of steam turbine unit. Recently, least squares support vector machine (LSSVM) is being proved an(More)
Perfluorooctanoic acid (PFOA) is extremely persistent and bioaccumulative in the environment; thus, it is very urgent to investigate an effective and moderate technology to treat the pollution of PFOA. In this study, a process combined iron and granular activated carbon (Fe(0)/GAC) micro-electrolysis with VUV-Fenton system is employed for the remediation of(More)
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