고로슬래그 광촉매(TiO₂)담채를 이용한 시멘트몰탈의 질소산화물(NOx) 및 포름알데히드(HCHO)제거특성

이동범,김광련,김화중 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)

That used photocatalyst carrier of blast-furnace slag powder and photocatalyst powder which was plastered from high temperature, this research investigated removal quality to NOx which become the cause of air pollution and HCHO which got out construction materials of a new building and tried to analyze the effect which photocatalyst carrier caused in the cement mortar, As a result of above, it will be raised the utility value of photocatalyst, it will be used the environment material.

반도체 레이저의 이득 스위칭에 의한 초단 펄스 발생

이상훈,명승일,이명우,서동선,소대화 명지대학교 대학원 1997 대학원논문집 Vol.1 No.-

반도체 레이저의 이득 스위칭에 의한 초단 펄스 발생에 대해 체계적으로 연구하였다. 즉, 동작 파라메터인 DC 바이어스 및 RF 정현파 전력에 따른 초단 이득 스위칭된 출력 펄스의 특성을 조사하였다. 최적의 펄스는 문턱 전류 부근의 DC 바이어스에서 얻어졌으며, RF 전력이 클수록 이 최적의 DC 바이어스는 감소하였다. 출력 펄스 폭은 RF 전력이 증가할수록 DC 바이어스의 변화에 덜 민감하게 나타났다. We study systematically on short pulse generation from a semiconductor laser by gain-switching. We examine the dependence of gain-switched pulse characteristics on the operating parameters, such as DC bias and RF power. The optimum short pulses are obtained around threshold DC bias. As the RF power increases, The DC bias to show shorter pulse width decreases slightly and the pulse width becomes less sensitive to the variations of the DC bias.

흉선 종양과 관련된 중증근무력증의 임상적 특성

강동화,김호진,김지수,이근호,이광우 대한신경과학회 1998 대한신경과학회지 Vol.16 No.4

위궤양, 위선종 및 위선암종 주변 Helicobacter pylori 위염에서 nitrotyrosine 발현 및 아포프토시스

이성희,진소영,이동화 순천향대학교 2001 Journal of Soonchunhyang Medical Science Vol.7 No.1

Purpose: To evaluate whether the increased risk of development of gastric carcinoma due to Helicobacter pylori (H. pylori) infection could be linked with elevated expression of peroxynitrite and apoptosis, we examined expression of nitrotyrosine, a marker for peroxynitrite; MIB-1, a marker for cell proliferation; and TUNEL index, a marker for apoptosis. Materials and Methods: We obtained gastric antral biopsies from 31 patients before and after anti-H. pylori eradication therapy. We examined MIB-1 proliferation index and expression of nitrotyrosine by immunohistochemistry, and apoptosis by TUNEL. Also, we examined H. pylori gastritis using gastric biopsy from 17 patients with gastric adenoma and from 22 patients with adenocarcinoma. Results: After eradication therapy of H. pylori gastritis, significant improvement in both activity and H. pylori count was observed(p<0.05). MIB-1 proliferation index, nitrotyrosine expression, and apoptosis index were similar among H. pylori gastritis with peptic ulcer, gastric adenoma, and adenocarcinoma. These data of H. pylori gastritis with peptic ulcer were decreased after eradication therapy. Conclusion: This study suggest that H. pylori infection is accompanied by the formation of endogenous reactive nitrogen intermediates. DNA damage induced by persistent and repeated inflammation could be reduced by eradication therapy against H. pylori. Key Words : Helicobacter pylori gastritis, Nitrotyrosine, Apoptosis, Proliferation index, Gastric adenocarcinoma

황산산성 용액에서 기체 발생 속도에 의한 히드라진과 요오드의 반응속도에 관한 연구

이송주,박동화 광주보건대학 1989 論文集 Vol.14 No.-

We have studied the kinetics of the N₂H₄=l₂ reaction in sulfuric acid media by gas evolution Choi?? has explained that the reaction of N₂H₄-Br₂processes through the Competitive Consecutive Second order reaction mechanism, and we have assumed N₂H₄-l₂ reaction processes through the same mechanism. The rate constant(k'₁) was found to be 0.87~0.98X 10^(-1) M^(-1) sec^(-1) with change in [N₂H₄]_(0), [l₂]_(0), 2a(=2[N₂H₄3_(0)-(l₂]) and inversely proportional to hydrogen concentration. we have also found th at, as k₃ is constant, a comparatively stable intermediate is present .

무용동작 수행 결정요인 분석

이동옥,임청하 건국대학교 교육연구소 2001 論文集 Vol.25 No.-

The study was designed to identify how the factorial structure for Deciding performance of Dance Movement. The subjects participating in this study were 31 women who was experienced the Dance. In order to accomplish this purpose, the 9 selected Dance Movement test were conducted to S college in Seoul. Factor analysis was applied for analyzing factorial structure of Dance Movement The implications of the study were was as follows ; 1.Among the factors of Dance Movement, Agility gad a significant impact. 2.At the excellent Dance Movement, Agility, Balance, Flexibility were very important factors for deciding performance outcomes.

인플레이션 期待下의 貨弊需要

李鐘和,孫東辰 湖西大學校工業技術硏究所 1985 工業技術硏究所論文集 Vol.4 No.-

Milton Friedman argued that physical goods should be regarded as a substitute for money and that higher expected rates of inflation should induce a portfolio shift from money to physical assets. As Friedman has derived his equation, the demand for real balances is a function of the expected rate of inflation in addition to nominal interest rates and real income. A number of empirical studies for different countries have shown that the anticipated rate of inflation has an independent direct effect on the demand for money, other than via interest rates. But in Korea, there are few studies about the role of expected rate of inflation in the demand for money. The purpose of this paper is to test the significance of the sorted-out independent effect of the expected rate of inflation on real balances and to suggest more appropriate monetary policy in such country suffering high inflation as Korea. In this paper a real partial adjustment mechanism of money demand is assumed. And the expected rate of inflation is estimated by the stochastic time series model(ARIMA model). According to the evidence of this paper, the expected rate of inflation exerts significant influences upon money holdings, while nominal rate fo interest has little explanatory power in money demand function. This confirms the fact that nominal rate of interest has been under the strict government control and has not reflected the opportunity cost of money holdings in Korea. These results suggest that monetary authority should control money supply more carefully in Korea, where everyone has inflationary expectations. In further studies particular emphasis should be given on the mechanism of price expectations formation associated with the appropriate specification of the money demand function and the correct forecast of the effect of monetary policy.

Coproporphyrin 簡易 定量法의 改善에 關한 硏究

李昌和,宋東彬,車喆煥 고려대학교 의과대학 1984 고려대 의대 잡지 Vol.21 No.1

Rimington (1971) developed a satisfactory method for quantitative determination of urinary coproporphyrin (CP), which is essentially needed for diagnosis of lead poisoning in suspected persons. But it is found to be unsuitable for a mass screening because it is Iaborious and complex in its procedures. Soulsby (1974) modified the method into a simple and convenient one by reducing the steps in extraction procedure. In spite of its simplicity and usefulness for screening purpose, aythor experienced that CP determination by the method was inconsistent and erroneous. Thus, it was not satisfactory and acceptable if accurate determination of CP is needed as in screening test for lead poisoning. The present study was performed to find a simple and accurate method that is applicable for the quantitative determination and mass screening by modifying Soulsby’s method. The results were as follows: 1. The amount of CP extracted with diethylether was shown to be highly dependent on urine pH, when extraction was performed one time instead of three times. The optimal pH was 5.4 where 98% of CP was recovered with one time extraction. 2. When the diethylether layer was washed with distilled water, it was possible to avoid interference in UV-spectrophotometry caused by contaminated organic materials. 3. With modification as above, average recovery rate of CP from urine was 99.5% with a coefficient of variance 2.1% on vaiidity test. 4. The results suggested that Soulsby’s method can be improved to a method with both simplicity and accuracy by simple modifications, i.e., one time extraction with adjusting the urine pH to 5.4 and washing the diethylether later containing CP with distilled water.

한국 여성운동과 걸스카우트운동 : 과거·현재·미래 Yesterday, Present and Tomorrow

정세화,이동원,김미숙,박진숙,장화경,홍승아 이화여대 한국여성연구소 1988 여성학논집 Vol.5 No.-

One of the major implications of women's movements seems to lie in the fact that it tends to promote women's consciousness-raising and, thus, heighten social status of women in general. It would be very much the case when discussion centers around the emergence of Korean women's movements in modern sense. Due to the socio-political atmospheres of the lathe 19th century Korean society, its basic characteristics owe to strong tones of patriotic nationalism under the slogan of "learning is might enough to deal with the imperialistic foreign powers of the time." As such, ever since the introduction of women's enlightenment movements of the time, Korean women's movements have provided for the advancement of egalitarian society. However, assessing the effectiveness of programs that are practiced by the existing women's organizations in Korea, it deserves mention in that most programs are for the adult female members, assuming it would only be applicable to those adults. In this regard, it can be said that the Korean Girl Scout organization has worked a unique role to make up such voids in women's movements - most programs developed and exercised by the Girl Scout are reserved for those young girls. For instance, special activities like social services, field campaigns, and international gatherings would definitely work a profound impact in the formation of gender-role stereotypes of the youth. The present study tries to examine the Korean Girl Scout movement being the case of women's movement organization. Discussion will cover such topics as; historical reviews of Korean Girl Scout movement, principal organizational goals and its practice in real life, and internal dynamics of members between "staffs" and the ordinary members themselves-on perceptions of the movement, evaluation of leaderships, and the future orientations of the Girl Scout, etc. Various research methods are employed. Book reviews, in-depth interviews, questionnaires, and participant observations are utilized, when the respective measurement is required. Major findings of the study can be summarized as follows: (1) Numbers of Girl Scout membership have declined since 1980, while revealing its utmost pick upto mid-70s. In terms of regional distributions of the members, both Seoul and Kyung-Nam Branches are the most prosperous. Whereas commemoration ceremonies and camping works are considered most impressive programs, membership trainings and field works are the lowest. About 70 percent of the members show their length of activities in Girl Scout less than one year. Most members are involved in the activities based on self-decision in order to have social services, club memberships, or self actualizations. They are satisfied with most of the programs, especially when participating in the social service programs. (2) As for the staff members, about half of the leaders in the headquarters are newly appointed. Whereas majority of the 'field' staffs are young (in their 20s, or 30s), other leaders are considered old (most of them are in their 40s, 50s, or 60s). Half of the leaders are involved in the activities for less than 5 years. They are recruited by either colleagues' or office seniors' recommendations. Reasons to participate in the movement are to have self-actualized or to have opportunity for social services. All in all, leaders are satisfied with the Girl Scout activities mainly because they can see their youth members progressing and developing. (3) Several issues for the better organizational managements seem to be related. prevalence of aspirational differences between leaders and members tends to cause psychological burdens. Other problematics such as lack of free communication networks, tensions due to cohort differences, authoritarian leadership styles, and financial difficulties would hinder Girl Scout movement more promising and popular to all. Based on the research findings, two major suggestions might be in order. First, underlying rationales of the Girl Scout movement should be reoriented. A special emphasis on the creation of self-supportive 'androgynous individuals' would be the case (in this regard, an intensive program targeted for those pre-school-aged members would be the most effective). As a way to achieve the strategic reformulation, reliance on the interdisciplinary program (for example, coordination with the university) will be one possibility. Secondly, an organizational management should be sufficiently considered. provisions (tangible and intangible) for the 'field leaders' being the key leader group in the Girl Scout movement should be afforded enough to keep their participations voluntary and continuous.

대동맥-장골동맥 폐색증에 대한 경피경관 혈관성형술 및 스텐트삽입술의 누적개존율

최동현,이상목,고석환,홍성화,오수명,윤충,박호철,오주형 대한혈관외과학회 2004 Vascular Specialist International Vol.20 No.1