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박사영,이나영,이효진,이선영,최진혁,이순남,심강섭,성순희,한운섭 梨花女子大學校 醫科大學 醫科學硏究所 1996 EMJ (Ewha medical journal) Vol.19 No.3
Multiple primary cancer means that more that two cancers occur independently in an individual. Recently, the incidence of multiple primary cancer has increased with lengthened survival, of cancer patients, development of new diagnostic technique and increased clinical evaluation. We report a patient who had adenocarcinoma of stomach combined with squamous cell carcinoma of esophagus simultaneously.
Erratum to: Intracellular Substrates of a Heme-Containing Ascorbate Oxidase in Pleurotus ostreatus
Seung-Rock Lee,Woo-Jeong Joo,Yong-Un Baek,Youn-Kyong Lee,Seong-Woon Yu,Yeon-Ran Kim,Kee-Oh Chay,Seung-Hyun Cho,Sa-Ouk Kang 한국미생물학회 2009 The journal of microbiology Vol.47 No.6
In the online version of the article the name of the second corresponding author is misspelled. The correct spelling is Sa-Ouk Kang. The online version of the original article can be found under doi: 10.1007/s12275-008-0307-8
객관 분석에 의한 복잡지형의 대기유동장 수치모의와 모델에 의한 자료질 조절효과
이화운,최현정,이강열 한국대기환경학회 2005 한국대기환경학회지 Vol.21 No.1
In order to reduce the uncertainties and improve the air flow field, objective analysis using asynoptic observational data is chosen as a method that enhances the reality of meteorology. In surficial data and their numerical interpolation for improving the interpretation of meteorological components, objective analysis scheme should perform a smooth interpolation, detect and remove the bad data and carry out internal consistency analysis. For objective analysis technique which related to data reliability and error suppression, we carried out two quality control methods. In site quality control, asynoptic observational data at urban area revealed low representation by the complex terrain and buildings. In case of wind field, it was more effective than temperature field when it were interpolated near waterbody data. Many roads, buildings, subways, vehicles are bring about artificial heat which left out of consideration on the simulation of air flow field. Therefore, in temperature field, objective analysis for more effective result was obtained when surficial data were interpolated as many as possible using value quality control rather than the selection of representative site.
복잡한 해안지역의 지역특성을 고려한 대기 유동장에 따른 SO₂의 확산장 수치모의
이화운,원혜영,최현정,이강열,김현구 한국환경과학회 2005 한국환경과학회지 Vol.14 No.3
Recently air quality modeling studies for industrial complex and large cities located in the coastal regions have been carried out. Especially, the representation of atmospheric flow fields within a model domain is very important, because an adequate air quality simulation requires an accurate portrayal of the realistic three-dimensional wind fields. Therefore this study investigated effect of using high resolution terrain height data and FDDA with observational data to reflect local characteristics in numerical simulation. So the experiments were designed according to FDDA and the detail terrain height with 3sec resolution or not. Case 30s was the experiment using the terrain height data of USGS without FDDA and Case 3s was the experiment using the detail terrain height data of Ministry of Environment without FDDA and Case 3sF was experiment using the detail terrain height data of Ministry of Environment with FDDA. The results of experiments were more remarkable. In Case 3s and Case 3sF, temperature indicated similar tendency comparing to observational data predicting maximum temperature during the daytime and wind speed made weakly for difference of terrain height. Also Case 3sF had more adequate tendency than Case 3s at dawn.
전기-수학력적 방법에 의한 초미세 입자 발생 장치의 성능 평가
이규운,안강호 漢陽大學校 工學技術硏究所 1997 工學技術論文集 Vol.6 No.1
The ultrafine particle researches in the fields of new materials processing, air pollution, semiconductor manufacturing processes, and sensor manufacturing are growing rapidly. The most commonly used conventional techniques to generate ultrafine particles are the atomization of liquid with high pressure air and the evaporation and condensation processes of solid metals and salts. The atomization process can usually generate particles from several tenth of micron to several microns sizes and the size distributions are usually broad. The evaporation and condensation method can generate particles from a few nanometer to several nanometer sizes with fairly monodisperse distributions. However, this technique requires high temperature oven and rapid cooling system which makes the particles generation system bulky and hard to handle. In this study, a new ultrafine particle generation technique is investigated using electrohydrodynamic (EHD) spray method. This technique can usually generate a few nanometer size particles with high electric field. When a liquid is injected through a ca. 100μm hole a high electric field is applied between the injection hole and the ground plate, which makes very steep electrical potential gradient near the injection hole. This strong potential gradient makes the liquid surface break, consequently forming small droplets. The particle sizes are found to be in the ranges of a few tens of nanometers with bimodal distributions. It was also found that the mean sizes were increased as the atomizing liquid solution concentration increased.
이화운,정우식,임헌호,이강열,노순아 부산대학교 환경문제연구소 2003 環境硏究報 Vol.21 No.-
For the purpose of prediction air quality in Kimhae area, ISC3 and UAM were used. As the study area is located in a coastal area, the atmospheric flow is strong1y affected by the sea breeze. The air quality model results show that the dirunal variation pattern of pollutants is consistent with observed spatial and temporal features, as a whole.
한국 인구구조의 변화에 관한 분석- 1955년~2020년-
李云英,金初江 韓國保健敎育學會 1989 보건교육건강증진학회지 Vol.6 No.2
This study analyzes the structural characteristics of rapid changes in Korean population, using the data of a census and other data on the changes in the population. Major findings are : 1. During 1950∼1955, annual increase rate of population was about 1.02%, about 2.88% during 1955∼1960, and 1.36% during 1980∼1985. It is expected to decrease to 0.07% during 2015∼2020. 2. Major Age Composition 0∼14 is expected to reduce to 16.5% in 2020 from 41.2% in 1955, while the ratio of population aged 15∼64 is expected to increase to 72.1% from 55.5%. Furthermore, for the population group of age 65 and over is expected to increase from a mere 3.3% to 11.4%. 3. The aging index of population is expected to increase to 69.5 in 2020 from 8.0 in 1955 and so the old dependency ratio is expected to 15.9 from 6.0 4. The median age is expected to 40.2 in 2020 from 19.0 in 1955. 5. In 2020 the child-woman ratio is expected to reduce to 22.3 from 64.7 in 1955. 6. In 2020 the age index of 0∼4 is expected to 57.4 from 169.4 in 1955, and the age index of 65∼69 to 261.7 from 95.6 on the contrary.
강안수,이병철,이한섭,안형환,이영주,류운형 明知大學校 産業技術硏究所 1993 産業技術硏究所論文集 Vol.12 No.-
For elucidation of various parameter's effect on the reactive extraction of organic acidstrioctylamine(TOA)-diluents system, the association model, equilibrium constants and extraction factors(loading) were investigated . The organic acids rosed were propionic. succinic, masonic, and benzoic acid. Extractant was tertiary amine, TOA and diluents were butylaeohol, hexane, and benzene. It was concluded that the loading of monobasic acid of propionic acid were higher than that of dibasic acids of oxalic, and malonic acid with extranctant TOA. In the extraction of monobasic acid the extraction factor was not affected by the initial concentration of extractant amine, but in the extraction of dibasic acids the extraction factor was getting better with decreasing the initial concentration of amine. There was a strong effect of diluents upon the extractien factor, and the order of these factor was as shown below: xylene<Benzene<butylalcohol<choloroform<methylisobutylketone.