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Metabolism of Saikosaponin c and Naringin by Human lntestinal Bacteria
Yu, Ki Ung,Jang, Il Sung,Kang, Keung Hyung,Sung, Chung Ki,Kim, Dong Hyun 전남대학교 약품개발연구소 1997 약품개발연구지 Vol.6 No.1
By human intestinal bacteria, saikosaponin c was transformed to four metabolites, prosaikngenin E1 (E1) prosaikogenin E1 (E2), prosaikogenin E3 (E3) and saikogenin E. Metabolic time course of saikosaponin c was as follows; in early time, saikosaponin c was converted to E1 and E2, and then these were transformed to saikogenin E via E3. Also, this metabolic pathway was similar to the metabolism of saikosaponin c by rat intestinal bacteria. Bacteroides JY-6 and Bacteroides YK-4, the bacteria isolated from human intestinal bacteria, could transform saikosaponin c to E via E1 (or E2) and E3. However, these bacteria were not able to directly transform E1 and E2 to saikogenin E. Naringin was mainly transformed to naringenin by human intestinal bacteria. The minor metabolic pathway transformed naringin to naringenin via prunin. By JY-6 or YK-4, naringin was metabolized to naringenin only via prunin.
Metabolism of Saikosaponin c and Naringin by Human Intestinal Bacteria
Yu, Ki-Ung,Jang, Il-Sung,Kang, Keung-Hyung,Sung, Chung-Ki,Kim, Dong-Hyun The Pharmaceutical Society of Korea 1997 Archives of Pharmacal Research Vol.20 No.5
By human intestinal bacteria, saikosaponin c was transformed to four metabolites, prosaikogenin E1 (E1) prosaikogenin E2 (E2), prosaikogenin E3 (E3) and saikogenin E. Metabolic time course of saikosaponin c was as follows; in early time, saikosaponin c was converted to E1 and E2, and then these were transformed to saikogenin E via E3. Also, this metabolic pathway was similar to the metabolism of saikosaponin c by rat intestinal bacteria. Bacteroides JY-6 and Bacteroides YK-4, the bacteria isolated from human intestinal bacteria, could transform saikosaponin c to E via E1 (or E2) and E3. However, these bacteria were not able to directly transform El and E2 to saikogenin E. Naringin was mainly transformed to naringenin by human intestinal bacteria. The minor metabolic pathway transformed naringin to naringenin via prunin. By JY-6 or YK-4, naringin was metabolized to naringenin only via prunin.
주니어 공학 팀 미션 프로젝트 교육프로그램 및 교재 개발과 적용 효과
최유현(Yu Hyun Choi),박기문(Ki Moon Park),임윤진(Yun Jin Lim),임병웅(Byeong Ung Lim) 한국공학교육학회 2011 공학교육연구 Vol.14 No.3
The purpose of this study is to develop the ‘Engineering Team Mission Project Education Program and Textbook’, which is improved creativity and creative problem for Juniors(middle school students) that is in the growth stage to become the leading role in future society. This can be applied the creative experience activities time of revised curriculum in 2009 being implemented to secondary education by 2011. The results of this study are as follows. The formation of Team Mission Project Education Program is the big field 2 project, lower field 8 module and 38 total lessons. This education program has secured the validity of the SME(Subject Matter Expert) expert conference. Actually, by putting the education program and textbook to the invention talent class formed by middle school students and by normally analyzing, it has been analyzed as very satisfying result. Therefore, the Engineering Team Mission Project Education Program and Textbook can be provided as a practical education course of new talent training and engineering talent model of the nation s knowledge property education. And it can perform as an education program using usefully in the creative experience activity education course in middle class education stage. Also, it is concluded to become the basis of engineering design education s high grade education and department of engineering s creative engineering.
배기탁 ( Ki Tak Bae ),최정식 ( Jung Sik Choi ),김영구 ( Young Gu Kim ),손한백 ( Han Baek Son ),유종원 ( Chong Won Yu ),도웅정 ( Ung Jeong Do ),박나영 ( Na Young Park ) 대한내과학회 2013 대한내과학회지 Vol.85 No.1
Choledochal cysts are congenital lesions involving cystic dilatation of the bile ducts. The choledochocele, the rarest type of choledochal cyst, is a cystic dilatation of the distal common bile duct that protrudes into the duodenum. There have been few reports concerning malignancy in the biliary tree associated with choledochoceles. We recently experienced a case of a choledochocele with gallbladder cancer. (Korean J Med 2013;85:73-76)
단독운전방지를 위한 능동적 주파수 변환기법의 출력전력 분석
이기옥(Lee Ki-Ok),최주엽(Choi Ju-Yeop),최익(Choy Ick),유권종(Yu Gwon-Jong),안진웅(An Jin-ung) 한국태양에너지학회 2009 한국태양에너지학회 논문집 Vol.29 No.6
Recently, as the grid-connected photovoltaic power conditioning systems (PVPCS) are installed in many residential areas, these have raised potential problems of network protection on electrical power system. One of the numerous problems is an Islanding phenomenon. In this paper, active frequency drift (AFD) method, one of the anti-islanding methods which is analyzed by current magnitude compensation and calculation of RMS value of the output power is proposed and verified by simulation.
이기옥(Lee Ki-Ok),최주엽(Choi Ju-Yeop),최익(Choy Ick),유권종(Yu Gwon-Jong),안진웅(An Jin-ung) 한국태양에너지학회 2010 한국태양에너지학회 논문집 Vol.30 No.1
As many grid-connected photovoltaic power conditioning systems(PVPCS)are installed in many residential areas simultaneously, these have raised potential problems of network protection on electrical power system. One of the numerous problems is an Islanding phenomenon. In this paper, active frequency drift(AFD)method, one of the anti-islanding methods which is analyzed by current magnitude compensation and calculation of the fundamental component. Both harmonic component and RMS value of the output current for THD analysis are provided and verified by simulation.