Yu-Ping Shen

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A rapid method was developed to quantify diosgenin in Rhizoma Dioscoreae Zingiberensis. For the first time, sample solution was prepared by coupling pretreatment of raw material in cellulase and two-phase acid hydrolysis. After reconstitution, analysis was carried out on a C18 column, at 30°C, with acetonitrile and water (70:30, v/v) as mobile phase with(More)
In this study, the inhibitory and apoptosis-inducing effect of ginsenoside F4 (GF4) from steamed notoginseng was investigated by using human lymphocytoma Jurkat (JK) cell. Cell Counting Kit-8 method was then used to assess the anti-proliferative effect of GF4, and Western blotting was run to detect the expression level of two apoptosis-related proteins(More)
In this paper, it is shown that stable model semantics, perfect model semantics, and partial stable model semantics of disjunctive logic programs have the same expressive power with respect to the polynomial-time model-equivalent reduction. That is, taking perfect model semantics and stable model semantic as an example, any logic program P can be(More)
Marek’s forward-chaining construction is one of the important techniques for investigating the non-monotonic reasoning. By introduction of consistency property over a logic program, they proposed a class of logic programs, FC-normal programs, each of which has at least one stable model. However, it is not clear how to choose one appropriate consistency(More)
BACKGROUND The tubers of Dioscorea zingiberensis, is the most favorable plant material for the production of diosgenin, an important bioactive steroidal sapogenin and requisite precursor of cortin, contraceptive and sex hormone, which is the only desired product after steroidal saponins from the tubers are hydrolyzed. OBJECTIVE A novel technology, in situ(More)
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