Chinese Academy of Sciences

Shanghai Green Valley Pharmaceutical Co., Ltd.

Techical Sourcing International, Inc.

Yunlong Gu

Lijiang Xuan

Jing Zhao

Liang Hu

Wenwei Xu

Yiping Wang

Xianjun Tan

Weizhong Chen

Hongming Tian

Xiaomei Wang

Weibin Song

Shumei Wang

Xiaoyu Zhou

Dingxiang Li

Steve Lee

Zhitian Li

Yaming Xu

Chunguang Chen

Zhengrong Shi

Chaoxuan Zhang

The present disclosure discloses a deformation and control simulation test system for a tunnel engineering supporting structure, including a follow-up hoisting platform, actuators, a control system. It is horizontal structure. The follow-up hoisting platform reduces the friction caused by the weight of testing sample and facilitates experimental operations. Each actuator fixed on an annular box body reaction frame can move independently through a control system in form of force control or displacement control mode, and can achieve circumferential contraction loading through its gomphodont configuration. The hinged and curved design of the cushion blocks of actuators can adapt to the circumferential contraction deformation of a test sample and maintain a close fit with them during the loading process. The present disclosure provides a good solution for physical model tests on deformation and control of tunnel engineering supporting structures including uniform loading, non-uniform loading, and long-term loading conditions.

Deformation and control simulation test system for tunnel engineering supporting structure

The present invention relates to a method for preparing magnesium lithospermate B. The method is characterized in that: magnesium lithospermate B is extracted or purified from aplant material or aextract in the presence of an added magnesium salt. The present invention also relates to a high-purity magnesium lithospermate B product prepared by the method of the present invention, wherein the content of magnesium lithospermate B is more than 95% by weight.

High-purity magnesium lithospermate B and preparation method therefor

A method has been developed to extract and purify the chemical constituents in the traditional medicinal plant Salvia miltiorrhiza by an alcohol based method.

Methods for identification, purification, and manufacturing of the active constituent in Salvia-miltiorrhiza (dansheng) and the application of this product in enhancing cardiovascular functions

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Shanghai, China

Yunlong Gu