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A Novel Clotrimazole-Ioaded Suppository with Effective Anti-tumor Activity
Xuan, Jing Ji,Kim, Jong-Tae,Oh, Dong-Hoon,Han, Hong-Hee,Lee, Won-Seok,Lee, Jong-Sook,Rhee, Jong-Dal,Yong, Chul-Soon,Woo, Jong-Soo,Kim, Jung-Ae,Choi, Han-Gon The Korean Society of Pharmaceutical Sciences and 2008 Journal of Pharmaceutical Investigation Vol.38 No.5
To develop a poloxamer-based solid suppository with poloxamer and polyethylene glycol mixtures, the melting point of various formulations composed of P 188 and propylene glycol were investigated. The dissolution and antitumor activity of clotrimazole delivered by the poloxamer-based suppository were performed. The poloxamer mixtures composed of P 188 and propylene glycol were homogeneous phases. P 188 greatly affected the melting point of poloxamer mixtures. In particular, the poloxamer mixture [P 188/propylene glycol(70/30%)] with the melting point of about $32^{\circ}C$ was a solid form at room temperature and instantly melted at physiological temperature. Furthermore, the ratio of P 188/propylene glycol greatly affected the dissolution rates of clotrimazole from poloxamer-based suppository. It gave the more effective anti-tumor activity than conventional PEG-based suppository due to fast dissolution. Thus, the clotrimazole-Ioaded poloxamer-based solid suppository was an effective rectal dosage form with anti-tumor activity.
A Novel Clotrimazole-Loaded Suppository with Effective Anti-tumor Activity
( Jing Ji Xuan ),( Jong Tae Kim ),( Dong Hoon Oh ),( Hong Hee Han ),( Won Seok Lee ),( Jong Sook Lee ),( Jong Dal Rhee ),( Chul Soon Yong ),( Jong Soo Woo ),( Jung Ae Kim ),( Han Gon Choi ) 한국약제학회 2008 Journal of Pharmaceutical Investigation Vol.38 No.5
Life Science : A Novel Clotrimazole-Loaded Suppository with Effective Anti-tumor Activity
( Jing Ji Xuan ),( Jong Tae Kim ),( Dong Hoon Oh ),( Hong Hee Han ),( Won Seok Lee ),( Jong Sook Lee ),( Jong Dal Rhee ),( Chul Soon Yong ),( Jong Soo Woo ),( Jung Ae Kim ),( Han Gon Choi ) 영남대학교 약품개발연구소 2009 영남대학교 약품개발연구소 연구업적집 Vol.19 No.-
연구논문 : 생명과학 ; 폴록사머 및 프로필렌글리콜을 이용한 클로트리마졸 고형 좌제의 물리화학적 특성
현경희 ( Jing Ji Xuan ),오유경 ( Yu Kyoung Oh ),김정애 ( Jung Ae Kim ),공경환 ( Kyung Hwan Gong ),김지현 ( Ji Hyun Kim ),양준호 ( Joon Ho Yang ),배명수 ( Myung Soo Bae ),김호동 ( Ho Dong Kim ),이종달 ( Jong Dal Rhee ),장현욱 ( Hye 영남대학교 약품개발연구소 2005 영남대학교 약품개발연구소 연구업적집 Vol.15 No.-
A Knowledge-Based Image Segmentation System and Its Hardware Support System
Jing, Shen Xuan,Ji, Qian Qing 대한전자공학회 1992 HICEC:Harbin International Conference on Electroni Vol.1 No.1
A major problem in machine vision is the segmentation of images. In this paper, we present a new approach to solve the image segmentation problem that is based on the design of a knowledge-based image segmentation system(KBISS). The KBISS is an expert system which is based on production system, and according to two type knowledge, i.e region analysis rules and line analysis rules, performs the image segmentation. In general, a knowledge-based system realized on the conventional computer is low efficient. For this reason, we developed a KBISS hardware support system which is an electro-optical hybrid system. The experiment results show the KBISS and its hardware support system is valid and reasonable.
폴록사머 및 프로필렌글리콜을 이용한 클로트리마졸 고형 좌제의 물리화학적 특성
현경희,오유경,김정애,공경환,김지현,양준호,배명수,김호동,이종달,장현욱,용철순,최한곤 한국약제학회 2005 Journal of Pharmaceutical Investigation Vol.35 No.2
To develop a clotrimazole-loaded solid suppository with poloxamer and propylene glycol, the melting points of various formulations composed of poloxamer 188 (P 188) and propylene glycol were investigated. The dissolution study of clotrimazole delivered by the suppository composed of P 188 and propylene glycol was performed. The mixtures composed of P 188 and propylene glycol were homogeneous. Propylene glycol affected the melting points of poloxamer mixtures. In particular, the mixture [P 188/propylene glycol (70/30%)] with the melting point of about 32°C was a solid form at room temperature and instantly melted at physiological temperature. Furthermore, propylene glycol affected greatly the dissolution rates of clotrimazole from the suppository. Dissolution mechanism analysis showed the dissolution of clotrimazole was proportional to the time. Our results indicated that the solid suppository with P 188 and propylene glycol would be a candidate of rectal dosage form for clotrimazole.
Vehicle Stability Enhancement Using Active Front Steering System
Jing-Yi Zhang,Dong-Ji Xuan,Yang-Hai Nan,Young-Bae Kim 한국자동차공학회 2007 한국자동차공학회 지부 학술대회 논문집 Vol.- No.-
This paper investigates a control strategy of active front wheel steering based on quantitative feedback theory (QFT). By incorporating feedback from yaw rate sensor into active steering system, the control system improves the dynamic responses of the vehicle. A multi degree-of-freedom nonlinear model is co-simulated by MATLAB Simulink and ADAMS/CAR. The performance of the control system is evaluated under various emergency maneuvers and road conditions shows that the designed robust control system has good control performance and can efficiently improve the handing qualities and stability characteristics.
Yi-Jing Wang,Pan Zhao,Bing-Dong Sui,Nu Liu,Cheng-Hu Hu,Ji Chen,Chen-Xi Zheng,An-Qi Liu,Kun Xuan,Ya-Ping Pan,Yan Jin 생화학분자생물학회 2018 Experimental and molecular medicine Vol.50 No.-
Mesenchymal stem cell (MSC)-based regeneration, specifically cell aggregate or cell sheet engineering, is a promising approach for tissue reconstruction. Considering the advantages of ease of harvest and lack of immune rejection, the application of autologous MSCs (i.e., patients’ own MSCs) in regenerative medicine has developed considerable interest. However, the impaired cell viability and regenerative potential following MSCs impacted by disease remain a major challenge. Resveratrol (RSV) exhibits reliable and extensive rejuvenative activities that have received increasing clinical attention. Here, we uncovered that resveratrol enhances the functionality and improves the regeneration of mesenchymal stem cell aggregates. Periodontal ligament MSCs (PDLSCs) from normal control subjects (N-PDLSCs) and periodontitis patients (P-PDLSCs) were investigated. Compared to N-PDLSCs, P-PDLSCs were less capable of forming cell aggregates, and P-PDLSC aggregates showed impaired osteogenesis and regeneration. These functional declines could be mimicked in N-PDLSCs by tumor necrosis factor alpha (TNF-α) treatment. Notably, a TNF-α-induced functional decline in N-PDLSC aggregates was rescued by RSV application. More importantly, in both N-PDLSCs and P-PDLSCs, RSV promoted cell aggregate formation and improved their osteogenic potential. Furthermore, as proven ectopically in vivo, the tissue regenerative capability of P-PDLSC aggregates was also enhanced after RSV treatment during aggregate formation in vitro. Finally, in a rat in situ regeneration model, we successfully applied both N-PDLSC aggregates and P-PDLSC aggregates to repair periodontal defects upon long-term functional improvements by RSV preconditioning. Together, our data unravel a novel methodology for using pharmacology (i.e., RSV)-based cell aggregate engineering to improve the functionality and facilitate the regeneration of MSCs from both healthy and inflammatory microenvironments, shedding light on improving the application of autologous MSC-mediated regenerative medicine.