http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이지연(G.Y.Lee),손건석(G.S.Son),김대중(D.J.Kim),이용래(Y.R.Lee),이귀영(K.Y.Lee) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_1
Twelve samples from field-aged catalyst were investigated. The conversion performance was measured in a model gas test. The samples taken from the inlet side of the monolith were more deactivated than the corresponding ones from the outlet. However, samples taken from peripheral positions always showed better performance than samples originating from the center. In order to explain observed variations in activity the total surface area(B.E.T) and poisoning of each sample(EDS) were examined. It was concluded that thermal deactivation was mainly responsible for the difference between peripheral and central position while the poisoning due to S, Pb and P had the largest effect on the inlet samples.<br/>
손건석(G. S. Son),이지연(G. Y. Lee),이귀영(K. Y. Lee),최병철(B. C. Choi) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.6_2
Quick aging of catalysts has done wi th, IAE AGING MODE suggested by lAE. To estimate the<br/> effects of number of aging cycle. temperature and H₂O. characteristics of surfaces. mechanical properties and Weibull Modulus were estimated. Also, the conversion efficiency of aged catalysts was evaluated with model gas bench test. The area of surface and pore volume were decreased according to the number of aging cycle. The precious metal which is well dispersed in fresh state was sintered and agglomerated with aging. The mechanisms ui deactivation and sintering of catalysts are discussed on the basis of mechanical tests. The conversion efficiency was decreased wi th the repeats of aging. Especially. the existence of H₂O in supply gas had a main role in catalyst deactivation with high temperature.<br/>
정현구(H.G JUNG),김남휘(N.W KIM),권성우(S.W KWON),박준영(J.Y PARK),이지연(J.Y LEE),탁태오(T.O TAK) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
This paper is about the reliability assessment of the previously researched precision volume controllable stick type drug infusion system. Existing drugs developed in the displacement of the syringe to the injector control pressure, so it is difficult to determine the precise substance injected amount. Due to heating motor and pressure in the syringe injection rates are declining and emerging issues. Therefore, a mechanism existing multibody dynamics were analyzed by using analysis techniques. After that, injection pressure was measured for a replicate biological experiments. This paper can solve the existing problems, pneumatic cylinder return stroke of the repeated injection for injecting an adjustable one-way displacement control mechanism proposed.
김대중(D.J.Kim),손건석(G.S.Son),이지연(G.Y.Lee),이귀영(K.Y.Lee) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.11_1
catalysts were aged in supply gas with or without water vapor according to IAE aging mode. Characteristics of aged catalysts were evaluated using TPR, XRD and XPS. The analysis of XRD and XPS was conducted using curve fitting. The presence of water vapor in supply gas during catalyst aging affected the behavior of surface and bulk reduction(TPR), the structure and particle size(XRD), chemical state and content of Ce³^+ and Rh³^+(XPS).<br/>
대학생들의 건강에 대한 인식 : 의료, 비의료 관련학과를 중심으로
김태영,양지영,이지연,이혜수,조은수,최기쁨,최희원,한보영 이화여자대학교 간호과학대학 2012 이화간호학회지 Vol.- No.46
Purpose: This study has been done to use as basic information for health training program through surveying the perception level for health focusing on medical and non-medical students, and to compare and analyze knowledge, attitude and conduct toward health among them. Method: This study’s investigated by selecting 4 universities in Seoul to look into not only the difference for the perception level for health between medical and non-medical major but the difference of that between male and female. Sampling is 135 of medical-related university and 145 of non-medical. Analyzed by t-test using SPSS 19.0. Result: There isn’t a distinct difference among them in health behavior on the whole but medical-related students showed high score in safety education, environmental health, exercise and individual habit of hygiene. In attitude for health, it showed clear distinction in every areas. Overall, it shows remarkable contrast in knowledge for health. Medical-related students showed high score in consumer health, nutrition, weight-control, exercise and individual habit of hygiene. Conclusion: Results in comparison of the level of living, manner and knowledge level for health between medical and non-medical majors didn’t show any difference in the level of living for health and showed clear distinction in attitude and knowledge.