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장선일,김형진,황기명,권태오,제갈승주,김윤철,배현옥,최병민,심재석,곽준수,정헌택,윤용갑,Jang S.I.,Kim H.J.,Hwang K.M.,Kwon T.O.,JeKal S.J.,Kim Y.C.,Pae H.O.,Choi B.M.,Shim J.S.,Kwak J.S.,Chung H.T.,Yun Y.G. 대한한의학방제학회 2002 大韓韓醫學方劑學會誌 Vol.10 No.2
The inhibitory effects of Injinseulki including extracts of melanian snail plus phytomedicinal plants on $CCl_4$-induced fibrosis, $IFN-{\gamma}$ plus LPS-induced production of NO, PMA-stimulated production $O_2$, and tacrine-induced hepatic injury were investigated in rats, RAW 264.7 or HepG2 cells. The ethanol extracts of melanian snail significantly inhibited tarcrine-induced inury of HepG2 cells. Injinseulki inhibited the production of NO and $O_2$ in a dose-dependent manner in activated RAW 264.7 macrophages. Injinseulki significantly inhibited chemical-induced fibrosis in Rats. These results show that Injinseulki including extracts of melanian snail plus phytomedicinal plants may explain some known biological activities of Injinseulki including their anti-inflammatory and anti-fibrotic effect, and is of considerable benefit in the treatment for live diseases.
이재천(J. C. Lee),고재욱(J. U. Koh),권태황(T. H. Kwon),신행봉(H. B. Shin),손정훈(J. H. Son) 유공압건설기계학회 2010 유공압건설기계학회 학술대회논문집 Vol.2010 No.10
This research aims at static characteristics control of a proportional electronic control valve with the configuration of RCP system using a digital amplifier·controller. The goal of the study is to reduce hysteresis through configuration of a digital closed-feedback system from the existing analog open-system, and to compact the digital amplifier·controller. 8-bit for development is selected for controlling a proportional valve and the related circuit is designed. The designed amplifier is combined with valve, hydraulic oil pump, and PC to configurate RCP system. The PID controller is used for control algorithm within MCU. Especially, the problem of unstable flow-output, which is found during the static characteristics control test, is solved by tuning duty ratio of PWM. Finally, the amplifier, which is developed by our research team, is used to test and compare the valves produced by the two companies, Rexroth and SG Sevo, and to get the results of the two companies" static characteristics control performance test.