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이승일(S. I. Lee),기호철(H. C. Ki),김보성(B. S. Kim),송문석(B. S. Kim) 한국도시철도학회 2014 한국도시철도학회논문집 Vol.2 No.1
Driving on the track of a railway vehicle running noise and peripheral devices can be distinguished by the behavior of the noise, and speed 200 km/h below the railway vehicle"s main source of noise driving the friction that occurs between wheel and rail is the noise. In this study, the friction of railway vehicle in order to measure the noise sound using the acoustic camera to track the position of driving the generation of noise sources, and that the cause was investigated. As a result, an increase in speed up, were found to increase the friction noise. In addition, the noise source and the acoustic camera was able to measure its size.
돈분과 유기성 부산물을 혼합한 혐기소화에서 바이오가스 생산
김운걸,오인환,양상엽,이경민,이승일,Kim, W.G.,Oh, I.H.,Yang, S.Y.,Lee, K.M.,Lee, S.I. 한국축산환경학회 2011 축산시설환경학회지 Vol.17 No.1
가축분뇨와 유기성 부산물의 혼합형태가 바이오가스 발생에 미치는 영향을 규명하고 자 시험을 수행한 결과는 다음과 같다. 1. 모돈분을 원료로 했을 때 가스발생량은 건물함량 5%에서 최대 7 L/d, 내용물 용적대비 0.389 L/$L{\cdot}d$ 이었으며, 고형물 10%에서는 최대 10 L/d, 0.556 L/$L{\cdot}d$ 이었다. TS 10% 일 때 최대 가스발생량이 TS 5%의 약 1.4배가 되었다. 2. 유기성 부산물을 혼합하였을 때 옥수수 사일리지에서 고형물 함량을 10%로 한 시험구에서 가스발생량은 1.11 L/$L{\cdot}d$이다. 대조구의 가스 발생량 0.556 L/$L{\cdot}d$과 비교하면 약 2배 가까이 되었다. 또한 음식물쓰레기를 첨가하였을 때 고형물 함량 10%에서 최대 18.17 L/d, 용적대비 1.01 L/$L{\cdot}d$로 나타났다. 3. 유기건물함량 대비 바이오가스 발생량은 모돈분만을 사용한 대조구에서 최대 203L/kg odm ${\cdot}d$, 음식물쓰레기를 첨가한 시험구에서 최대 216 L/kg odm${\cdot}d$, 옥수수사일리지 를 첨가한 시험구에서 최대 362 L/kg $odm{\cdot}d$로 나타났다. 4. 메탄가스의 농도는 대조구가 초반에 40%가 나왔고 후반에 약 70% 정도였으며 옥수수사일리지를 첨가한 시험구에서 초반에 52% 후반에 약 70%, 음식물쓰레기를 첨가한 시험구에서 초반에 약 40% 후반에 약 70%로 일반적인 농도보다 높았다. 5. 소화액의 성분분석결과 모든 시험구의 소화액은 작물이 필요로 하는 영양분을 골고루 함유하고 있어 액비로 이용할 수 있으리라 판단된다. Animal manure is produced annually 43.7 million tonnes in Korea. Among them, about 85.6 % are used as compost or liquid fertilizer to the agricultural land. The animal manure can be effectively utilized by mixing with organic byproducts that result in generation of biogas from anaerobic co-digestion process. This study aimed to optimize the content of total solid materials (TS) and determine the effect of organic byproduct on the co-digestion process. Prior to the byproduct treatments, determination of proper content of TS was conducted by controlling at 5 or 10 %. For the byproduct treatments, swine manure without adding the byproduct was used for control treatment, and swine manure mixed with either corn silage or kitchen waste was used for other treatments. Volume of biomethane ($CH_4$) generated from digested materials was quantified before and after byproduct treatments. In result, a 1.4-fold higher biomethane, about 0.556 L/$L{\cdot}d$, was produced when the content of TS was controlled at 10 %, compared at 5 %, about 0.389 L/$L{\cdot}d$. When the swine manure was mixed with the corn silage or kitchen waste, a two-fold higher biomethane was produced, about 1.theand 1.0heL/$L{\cdot}d$, respectively, compared to the control treatment. Biogas production from organic dry matter (odm) was a3, 362eand 2h6 L/kg odm${\cdot}$d for control, corn silage, and kitchen waste treatment, respectively. The lower biogas production in the treatment of kitchen waste than that of corn silage is associated with its relatively high odm contents. The methane concentration during the whole process ranged from 40 at the beginning to 70 % at the end of process for both the control and kitchen waste treatments, and ranged from 52 to 70 % for the corn silage treatment. Hydrogen sulfide ($H_2S$) concentration ranged between 350 and 500 ppm. All the integrated results indicate that addition of organic byproduct into animal manure can double the generation of biogas from anaerobic fermentation process.
김철수(C. S. Kim),안승호(S. H. Ahn),정광우(K. W. Chung),이승일(S.I. Lee),최덕호(D. H Choi),박민흥(M. H. Park) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.5
Heights of a platform above the rail for the passenger train in the country are classified into two categories such as the low level (500㎜; mainline) and the high level (1,135㎜; metropolitan subway line) platforms. In order to operate similarly both a mainline railroad and a metropolitan subway line, as the requisite door safety system, it is necessary to develop the doorstep equipment of the rolling stock regardless of both the low and high level platforms. In this study, the application of doorstep equipments to use mixed with two types of platforms are examined on the supposition that the train only for the low level platform stops in the both low and high level platforms.
저상 고상 승강장 겸용 승강문 스텝 성능조건에 관한 연구
김철수(C. S. Kim),안승호(S. H. Ahn),정광우(K. W. Chung ),김재문(J.M. Kim),이승일(S.I. Lee),최덕호(D. H Choi),박민흥(M. H. Park) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
Heights of a platform above the rail for the passenger train in the country are classified into two categories such as the low level (500mm; mainline) and the high level (1,135mm; metropolitan subway line) platforms. In order to operate similarly both a mainline railroad and a metropolitan subway line as the requisite door safety system it is necessary to develop the doorstep equipment of the rolling stock regardless of both the low and high level platforms. In this study performance requirements of doorstep equipments used for two types of platforms are examined on the supposition that the train only for the low level platform could stop in the both low and high level platforms.
도시철도차량 유지보수 정보화 시스템을 위한 사고/고장 분류체계에 관한 연구
이호용(H. Y. Lee),박기준(K. J. Park),안태기(T. K. Ahn),김길동(G. D. Kim),한석윤(S. K. Yoon),이승일(S. I. Lee) 한국철도학회 2003 한국철도학회 학술발표대회논문집 Vol.- No.-
Failure code system must include data of maintenance history, classification of failure, affective range and situation when failure occur. But the present failure code system have used a simple code system for classification to include only merchandise and tools. Advantageously, expansional standard code system that will be developed, it make that users can take steps of standardized overhaul and inspection as proposal maintain contents when failure occur or something wrong in vehicle of urban transit. Standardized failure codes must be developed and used that manufacturing companies and urban transit operating companies in order to give effect to maintenance works.
나한식,조경상,김종두,이승일,문철웅,이호영,장숙진 朝鮮大學校 附設 醫學硏究所 1989 The Medical Journal of Chosun University Vol.14 No.2
Histiocytic medullary reticulosis is a clinicopathologic syndrome characterized by its acute onset and relentless progression to death within a few months. The major clinical features are fever, malaise, weakness, weight loss, lymphadenopathy, hepatosplenomegaly, jaundice and purpura. The common laboratory findings are severe anemia, leukopenia, and thrombocytopenia. Histologically, bone marrow were infiltrated with atypical, neoplastic histiocytes, many of which had ingested large number of red blood cells, leukocyte, platelet. We experienced one case of HMR who was a 22 year old male admitted via ER with malaise, general weakness, fever and headache. The patient died often 11 days of illness. Death was due to massive bleeding and DIC thought to be due to pancytopenia secondary to massive blood element phagocytosis. So, we reported one case which considered compatible for HMR, with a few elementary reviewed literatures.