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고혈압(高血壓) 및 고지혈증(高脂血症)에 대(對)한 청열도담탕(淸熱導痰湯)의 실험적(實驗的) 연구(硏究)
이대식,신길조,조기호,김영석,배형섭,이경섭,Lee, Dai-Sik,Shin, Gil-Cho,Cho, Ki-Ho,Kim, Young-Suk,Bai, Hyung-Sup,Lee, Kyung-Sup 대한한방내과학회 1991 大韓韓方內科學會誌 Vol.12 No.2
Mahwangsan is used in the treatment of asthma due to wind and cold(風寒喘). This is study was carried out to investigate the effect of Mahwangsan extract and In order to investigate the effects of Chungyeuldodamtang experimental studies were performed in hyperlipidemia Rats induced by cholesterol and Spontaneusly hypertension rats. The contents of serum total cholesterol, triglyceride, phospholipid and FFA and the changes of blood pressure and heart beat were measured. The results were summarized as follows ; 1. The content of Total-Cholesterol in the serum compared with control group tended to be decreased in Chungyeuldodamtang group, but did not show a significance. 2. The content of Triglyceride in the serum was significantly decreased in Chungyeuldodamtang group. 3. The content of Phospholipid in the serum was significantly decreased in Chungyeuldodamtang group. 4. The content of FFA in the serum tended to decreased in Chungyeuldodamtang group, but did not show a significance. 5. The S.H.R's blood pressure was significantly decreased in Chungyeuldodamtang group. 6. The S.H.R.'s Heart beat compared with control group tended to be decreased in Chungyeuldodamtang group, but did not show a significance. According to the above results, it is assumed that Chungyeuldodamtang has a valid effect on Hypertension and Hyperlipidemia.
Axiomatic Design 기법을 이용한 연료전지 냉시동 특성 개선에 관한 연구
서정도(Suh, Jung-Do),이성호(Lee, Sung-Ho),안병기(Ahn, Byung-Ki),임태원(Lim, Tae-Won),유하나(Yu, Ha-Na),이대길(Lee, Dai-Gil) 한국신재생에너지학회 2008 한국신재생에너지학회 학술대회논문집 Vol.2008 No.10
Cold start of a fuel cell system is a major obstacle should be overcome as to commercialize it, especially for passenger vehicle applications. However, the cold start characteristics is so complicated since it involves various phenomenon such as ice-blocking in GDL, ionic conductivity in membrane affected by water activity with phase change, heat transfer through components such as bipolarplates or endplates, electro-chemical reactions affected by circumferential temperature and humidity as well. Axiomatic design provides a systematic method to investigate the complex phenomenon although it was developed as a methodology to establish logical design procedure by Nam P. Suh in 1990s. This paper presents a framework to approach the complex cold start problem using Axiomatic Design which features simplifying a problem through hierarchical decomposition and decoupling from the view of functional requirements and design parameters.
조희근(Hee-Keun Cho),서정기(Jung-Ki Seo),김병중(Byoung-Jung Kim),장태성(Tae-Seung Jang),차원호(Won-Ho Cha),이대길(Dai Gil Lee),명로훈(Noh-Hoon Myung) 한국항공우주학회 2010 韓國航空宇宙學會誌 Vol.38 No.7
과학기술위성 3호는 국내 최초의 전구조 복합재 위성이다. 이전에 개발된 위성은 대부분 태양전지판 등 부분적인 복합재 구조로 된 것도 있으나 전 구조 복합재 위성은 개발된 적이 없었다. 본 연구는 소형 복합재 위성의 버스 구조체 개발을 위한 복합재 응용 설계 및 제작 기술의 적용과 그 활용에 중점을 두고 있다. 특히 과학기술위성 3호의 버스 구조체는 이전에 개발된 위성의 구조체 와는 전혀 다른 형태로 개발되었다. A satellite that has an all-composite structure, STSAT-3(science and technology satellite), was initially developed in Korea. Partially use of advanced composites in space applications such as solar panel is well developed, however the application of an all-composite satellite bus has never been achieved in Korea. This study emphasizes the application of composite technology to the design and fabrication of an all-composite spacecraft bus for small-class satellite STSAT-3. Moreover its structure design concept is totally different from the one that was used in the previous satellites developed in Korea.