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Triterpenoid Saponins from Elsholtzia bodinieri
Hu, Hao-Bin,Zheng, Xu-Dong,Hu, Huai-Sheng,Jian, Yu-Feng Korean Chemical Society 2007 Bulletin of the Korean Chemical Society Vol.28 No.9
A new oleanane-type triterpenoid estersaponin, bodinierin C (1), along with two known saponins, mazusaponin I (2) and ciwujianoside C (3), were isolated from the water-soluble part of the root barks of Elsholtzia bodinieri. The structure of bodinierin C was characterized by spectroscopic means and chemical hydrolysis as 3β -Ocaffeoyl- 23-hydroxylechinocystic acid 28-O-α -L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β- D-glucopyranosyl ester. The known compounds were identified by comparing their spectral data with those of authentic samples or data reported in the literature. All compounds were firstly isolated from Elsholtzia bodinieri family.
Triterpenoid Saponins from Elsholtzia bodinieri
Hao-bin Hu*,Xu-dong Zheng,Huai-sheng Hu,Yu-feng Jian 대한화학회 2007 Bulletin of the Korean Chemical Society Vol.28 No.9
A new oleanane-type triterpenoid estersaponin, bodinierin C (1), along with two known saponins, mazusaponin I (2) and ciwujianoside C (3), were isolated from the water-soluble part of the root barks of Elsholtzia bodinieri. The structure of bodinierin C was characterized by spectroscopic means and chemical hydrolysis as 3b -O-caffeoyl-23-hydroxylechinocystic acid 28-O-a -L-rhamnopyranosyl-(1 4)-b -D-glucopyranosyl-(1?6)-b -D-glucopyranosyl ester. The known compounds were identified by comparing their spectral data with those of authentic samples or data reported in the literature. All compounds were firstly isolated from Elsholtzia bodinieri family.
Optimal Tracking Performance of NCSs with Time-delay and Encoding-decoding Constraints
Jun-Wei Hu,Xi-Sheng Zhan,Jie Wu,Huai-Cheng Yan 제어·로봇·시스템학회 2020 International Journal of Control, Automation, and Vol.18 No.4
In this paper, the tracking performance of networked control systems (NCSs) under energy constraints with time-delay and encoding-decoding is studied. Through spectral factorization and partial decomposition techniques, we can obtain the explicit representation of the optimal performance. It is shown that the optimal performance is affected by non minimum phase (NMP) zeros, unstable poles and other multiple communication constraints such as time-delay, encoding-decoding and additive white Gaussian noise (AWGN). At the same time, the obtained result shows that a two-parameter compensator is superior to a one-parameter compensator. In addition, it is found that time-delay, encoding-decoding and AWGN affected the tracking capability of NCSs. Finally, an example is given for verifying the correctness of the conclusions.