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이윤갑(Lee, Yoon-Gap) 계명대학교 인문과학연구소 2013 동서인문학 Vol.0 No.47
This essay deals with Lee Seung Hee’s national movement. He was born in 1847 in the Confucian scholar family. He took methodical study about Confucianism that led him to the national movement. Also his movement was based upon the theory of Anti-Western Culture. The national movement was developed to make public appeals for Anti-Japan, presented a public appeals about Anti-Western culture, the campaign for a national debt redemption, and developed private diplomacy struggle until his asylum. His national movement was developed to set wholesome Confucianism atmosphere in Korea for popular stability, and to keep the sovereignty by diplomacy struggle. Lee Seung Hee sought asylum to Russia in 1907 after Emperor Gojong was abdicated by Imperialistic Japan. He met Lee Sang Sul who was a secret envoy for the Hague convention in Vladivostok. They discussed method of the national movement. Lee Seung Hee thought method of the national movement and built national movement bases in overseas country by Anti-Western culture. His purpose was the reconstruction of the Korean empire government. He moved to Andong and continued the national movement with the Beijing general Kongjiaohui. He thought the Beijing general Kongjiaohui united as an ideological and political pivot for Koreans in China. But He didn’t totally accepted K’ang Yu-Wei’s Grand-Unity. Because it had many differences with orgin-Confucianism. Also Lee Seung Hee wanted to develop center of the Beijing general Kongjiaohui in Andong with origin-Confucianism. Lee Seung Hee’s national movement was finished by his death in 1916. However his national movement was continued by Confucian scholars in Sungju whom he had contacted during his asylum. And they developed his national movement to the 3.1 independence movement in 1919 and the independence declaration movement in the Versailles Peace Conference.
스마트무인기 연료계통 제트펌프의 내부 유동 특성에 관한 실험적 연구
이윤권(Yoonkwon Lee),이지근(Jeekeun Lee),이창호(Changho Lee),최희주(Heejoo Choi) 대한기계학회 2008 大韓機械學會論文集B Vol.32 No.2
The jet pumps are widely used to transfer the fuel between the tanks in an aircraft fuel supply system. However detailed design procedures for determining the size of components of the jet pumps are not known so well. In this paper, the flow characteristics of the jet pump, which is applied in the fuel transfer system for the smart UAV (Unmanned Aerial Vehicle), were experimentally investigated using the acrylic jet pump model for the visualization of the internal flow. The pressure distributions within the jet pump were measured, and then the loss coefficients of each part were calculated. The effects of Reynolds number and the distances (S) between the exit of the primary nozzle and the mixing chamber entrance were investigated. In addition, cavitation phenomena were considered through the flow visualization inside the jet pump. As a conclusion from the experiment, the contraction shape of the primary nozzle has a strong effect on the loss coefficient of the nozzle and the cavitation occurrence. Cavitation starts around the nozzle exit, and then it propagates to the full flow fields of the jet pump.
스마트 무인기 연료계통 제트펌프 설계 및 성능예측에 관한 연구
이윤권(Yoonkwon Lee),박설혜(Sulhye Park),이지근(Jeekeun Lee),이창호(Changho Lee),최희주(Heeju Choi),이수철(Soochul Lee),정재헌(Jeahun Jeong) 한국자동차공학회 2007 한국자동차공학회 지부 학술대회 논문집 Vol.- No.-
This paper is concerned with the design and performance prediction of jet pumps for fuel system. The jet pump is important component to transfer the fuel between tanks in fuel supply system. However detailed design procedures for sizing the component of the jet pumps are known a little. In this paper the jet pump was designed according to the design procedure based on the theoretical analysis. For verifying the design results from the theoretical approach, the performance of the designed jet pump was predicted using a commercial analysis code and was verified through the experiment for the jet pump sizing with high performance. The flow ratio and pressure ratio were compared with target value and satisfied the demands in fuel supply system. Further research was carried out to obtain more conclusive information from various interference conditions and for improvement in performance.
실험동물 랫드를 이용한 미세먼지 기도노출에 따른 호흡기계 독성에 대한 마늘의 예방효과 탐색
이윤범(YoonBum Lee),김근우(GeunWoo Kim),송영민(YoungMin Song),한영훈(YoungHoon Han),하창수(ChangSu Ha),이지선(JiSun Lee),김민희(MinHee Kim),손혜영(HyeYoung Son),이기용(GiYong Lee),허 용(Yong Heo),김창열(ChangYul Kim) 한국환경보건학회 2020 한국환경보건학회지 Vol.46 No.6
Objectives: Exposure to fine dust (PM10) could contribute to the occurrence of cardiovascular disease or respiratory abnormalities. Since garlic is known to possess an anti-oxidative stress effect, the present study was performed to evaluate the effect of garlic intake on fine dust-mediated pulmonary toxicity. Methods: Rats were intratracheally instilled with fine dust at 15 mg/kg body weight (BW)/day for five days following five-day intragastric intubation of garlic at 0.7 or 1.4 g/kgBW/day, or 13.1 mg/kgBW/day S-allyl-cysteine (SAC) as a reference component in garlic. Blood and bronchoalveolar lavage fluid (BALF) were collected. Results: Deposit of fine dust was visually and histopathologically observed in the lungs. Body weight gain during the instillation period was significantly lowered in all the groups instilled with fine dust. Neutrophil numbers in blood were significantly elevated in the fine dust alone group, but this alteration was diminished in the groups administered with garlic. Levels of serum glutathione were lower in the rats instilled with fine dust alone, and this decrease in the glutathione level seems dose-dependently compensated among the groups administered with garlic. Similar findings were observed in the BALF with statistical significance. Typical pulmonary histopathological observation related with inflammation was demonstrated in the lungs of the rats exposed to fine dust alone, whereas such histopathologic findings were not improved in the groups administered with garlic. Conclusion: The present study suggests that garlic intake could alleviate fine dust-mediated pulmonary or systemic toxicities. Further investigation is necessary to delineate the mechanism of garlic-mediated effects on pulmonary function.