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정혜교 ( Hye Gyo Chung ),민양원 ( Yang Won Min ),이찬수 ( Chansu Lee ),홍성노 ( Sung Noh Hong ),원지영 ( Ji Young Won ),장진아 ( Jin Ah Jang ),김철현 ( Cheol-hyun Kim ),장동경 ( Dong Kyung Chang ) 대한소화기학회 2020 대한소화기학회지 Vol.75 No.3
Background/Aims: Dysbiosis is an important factor in the pathogenesis of irritable bowel syndrome (IBS). Several studies have reported promising results using probiotics for the treatment of IBS. This study evaluated the efficacy of novel probiotics isolated from Kimchi, a Korean fermented food, and the feces of healthy Vietnamese people in a murine model of IBS. Methods: Lactobacillus paracasei DK121 was isolated from Kimchi, and L. salivarius V4 and L. plantarum V7 were isolated from the feces of healthy Vietnamese people residing in Korea. Forty rats were allocated to receive one of the study strains, a mixture of the strains, or the vehicle. After 5 days of administration, the rats were restrained in a cage to induce IBS. The effects of the probiotics on IBS were analyzed by evaluating the stool weights and stool consistency scores. Results: The primary outcome was analyzed upon the completion of a three-week experiment. The rats in the V7 group showed lower stool weights than those in the control group at week 2 (median: 1.10 [V7] vs. 2.35 [control], p=0.04, Mann-Whitney U-test) and week 3 (median: 1.10 [V7] vs. 2.80 [control], p=0.017). The rats in the DK121 (median: 2.00, p=0.007), V7 (median: 2.00, p=0.004), and mixture (median: 1.50, p=0.001) groups showed better stool consistency scores at week 2 than the control group (median: 3.00). Conclusions: The novel probiotics have beneficial effects on defecation in a murine model of IBS. Human studies confirming the efficacy are warranted.
CFT기둥과 H형강보의 관통형 볼트 접합부에 관한 실험적 연구
박순규,정혜교,김한수,김상진,김동환,이상훈 대한건축학회 1999 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.19 No.2
The purpose of this study is to investigate the structural behavior of bolted end plate moment connection between CFT column and H-beam. In this paper, four different types of the thru bolts are proposed. To analyze performances of the bolts and bolted end plate moment connection, the simple beam tests are executed. The experimental results show that the bolted end plate connection types have quite good performance in the structural behavior.
김현아,정성진,신경재,송진규,정혜교,정하선 대한건축학회 1998 大韓建築學會論文集 : 構造系 Vol.14 No.8
본 연구는 현재 주상복합건물의 구조해석시 사용되고 있는 ETABS 모델링의 문 제점을 파악하고 보다 간단하며 신뢰성 있는 모델링 방법을 제시하는 것이다. 상 부벽식 구조와 하부골조시스템으로 구성된 건물에서 상부의 벽은 전이보와의 접 합부에서 과도한 응력이 발생되는데, 일반적인 ETABS의 모델링은 기둥선에 따 라 강성이 구해지고 해석되므로 접합부에서의 응력을 파악하기 어려운 문제점이 등이 있다. 이러한 문제점을 해결하기 위해 유한요소해석의 결과를 기준으로 하 여 여러 가지 모델링 방법을 이용하여 비교하였다. 그 중 전이보와 기둥을 선 (Line) 요소로 치환하고 수직부재로 전단벽의 하부와 LINE요소로 연결하는 FRAME2 모델링 기법이 ETABS의 결과보다 유한요소해석 결과에 더 근접한 결 과로 나타났다. FRAME2의 모델링 기법이 부재설계시 부재력을 쉽게 얻을 수 있는 모델링 방법임을 알 수 있었다.
김정규(Jung Gyu Kim),정기택(Gi Taek Chung),정혜교(Hye Kyo Chung),백용준(Young Joon Paek) 한국강구조학회 1997 韓國鋼構造學會誌 Vol.9 No.3
Due to the complexity of crane related load estimation and design, process for steel factory has seldom been effectively automated and the adequate design program cannot be easily found. So the design of steel factory mainly depends on the sophisticated calculation by structural engineers. Along with the increasing needs of the largescale factory, the structural design of the factory has required a lot of time and effort in engineering practice. Moreover, because the greater part of the programs currently used in the structural design field have specified functions that are not directly linked to each other, it is likely to cause quite a few errors and reduce efficiency. In this study, the Steel Structure integrated system(SSis) has been developed to integrate the modeller, analysis and post-processor for the steel factory. This program includes a powerful pre-and post-processor through Graphic User Interface(GUI) from the windows 95 platform. and the object-oriented programming is employed to manage the overall process effectively. This program is supposed to update the structural design procedure and contribute to the development of construction technology.