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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.
Xuan Yu,Shouyuan Wu,Juanjuan Zhang,Yue Hu,Meng Luo,Hongmei Zhao,Xuping Song,Yaolong Chen,Xiaohui Wang 한국한의학연구원 2023 Integrative Medicine Research Vol.12 No.2
Clinical practice guidelines in Traditional Chinese Medicine (CPG-TCM) is the recommendation that aims to provide the best service to users by identifying and summarizing the rules of prevention, diagnosis, treatment, rehabilitation, and regression of diseases based on systematic reviews of evidence and balancing the advantages and disadvantages of different interventions for clinical questions of Traditional Chinese Medicine. Over the past 30 years, the concept and methods of evidence-based medicine have had a significant impact on the development of clinical practice guidelines in Western Medicine (CPG-WM), and their standardized guideline development methods are being adapted and used in the development of CPG-TCM. However, the quality of CPG-TCM is far from CPG-WM, and the methodological system for developing CPG-TCM is not yet fully established. Therefore, this study aims to explore the methodological differences between CPG-TCM and CPG-WM and to inform the development of high-quality CPGTCM.
( Yu Xuan Tian ),( Jie Chen ),( Hui Min Yu ),( Zhong Yao Shen ) 한국미생물 · 생명공학회 2016 Journal of microbiology and biotechnology Vol.26 No.2
Three combinations of molecular chaperones from Escherichia coli (i.e., DnaK-DnaJ-GrpEGroEL- GroES, GroEL-GroES, and DnaK-DnaJ-GrpE) were overproduced in E. coli BL21, and their in vitro stabilizing effects on a nitrile hydratase (NHase) were assessed. The optimal gene combination, E. coli groEL-groES (ecgroEL-ES), was introduced into Rhodococcus ruber TH3. A novel engineered strain, R. ruber TH3G was constructed with the native NHase gene on its chromosome and the heterologous ecgroEL-ES genes in a shuttle plasmid. In R. ruber TH3G, NHase activity was enhanced 37.3% compared with the control, TH3. The in vivo stabilizing effect of ecGroEL-ES on the NHase was assessed using both acrylamide immersion and heat shock experiments. The inactivation behavior of the in vivo NHase after immersion in a solution of dynamically increased concentrations of acrylamide was particularly evident. When the acrylamide concentration was increased to 500 g/l (50%), the remaining NHase activity in TH3G was 38%, but in TH3, activity was reduced to 10%. Reactivation of the in vivo NHases after varying degrees of inactivation was further assessed. The activity of the reactivated NHase was more than 2-fold greater in TH3G than in TH3. The hydration synthesis of acrylamide catalyzed by the in vivo NHase was performed with continuous acrylonitrile feeding. The final concentration of acrylamide was 640 g/l when catalyzed by TH3G, compared with 490 g/l acrylamide by TH3. This study is the first to show that the chaperones ecGroEL-ES work well in Rhodococcus and simultaneously possess protein-folding assistance functions and the ability to stabilize and reactivate the native NHases.
Grothendieck group for sequences
Xuan Yu 대한수학회 2022 대한수학회지 Vol.59 No.1
For any category with a distinguished collection of sequences, such as $n$-exangulated category, category of N-complexes and category of precomplexes, we consider its Grothendieck group and similar results of Bergh-Thaule for $n$-angulated categories \cite{bergh2014grothendieck} are proven. A classification result of dense complete subcategories is given and we give a formal definition of K-groups for these categories following Grayson's algebraic approach of K-theory for exact categories \cite{grayson2012algebraic}.
한국과 중국 20대 여성의 브래지어 착용 및 구매실태 조사
정유쉔 ( Yu Xuan Cheng ),어미경 ( Mi Kyung Uh ) 복식문화학회 2015 服飾文化硏究 Vol.23 No.2
The purpose of this study is to survey the wearing and purchasing situation related to brassieres between Korean and Chinese women and to analyze the differences among them. This study utilized a survey targeting 397 women in their 20``s in Korea and China. The results were as follows: First, Korean women considered that their breasts are conical in shape, whereas Chinese women considered their breasts to have a flat shape. With regard to breast size, those of Chinese women are larger than those of Korean women. Moreover, Chinese women expressed a high rate of dissatisfaction with their breasts. Second, regarding the wearing condition of brassieres, while Korean women expected their brassiere to converge their breasts to the center, Chinese women expected their brassiere to support the breasts. It was found that many of them were dissatisfied with the shoulder straps and the center front wire. Third, in the results pertaining to the purchasing brassieres, although both Korean and Chinese Women mainly visited brand name stores to buy brassieres, compared with Chinese women, Korean women prefer to shop at home to buy the brassieres. In addition, they considered the compensation effect, size, activity, fabric and fit as the most important selection criteria when purchasing a brassiere.