抗히스타민劑의 吸光度比法에 의한 定量

李允中,李康春,李東宣,李振九 成均館大學校 1980 論文集 Vol.28 No.-

The absorbance ratio method was applied to the quantitative determination of antihistamines, such as chlorpheniramine maleate(CPM), carbinoxamine maleate(CBM) and diphenhydramine hydrochloride. The influences of indicator and solvent concentration on the precision and accutacy of determination were investigated. And it was found that the effects of temperature and wavelength was negligible in case of averaging conditions. The standard deviations for three antihistamines tested were within 0.13%. As the results, the determination of antihistamines could be carried out easily, rapidly and accurately by the absorbance ratio method.

The Knight’s Tale and The Miller’s Tale as One Tale

Lee,Dong-Choon 신영어영문학회 2011 신영어영문학 Vol.49 No.-

Lee, Dong-Choon. The Knight’s Tale and The Miller’s Tale as One Tale. The New Studies of English Language & Literature 49 (2011): 103-131. The first two tales-the Knight’s Tale and the Miller’s Tale-of the Canterbury Tales are the representative examples that reflect not only the narrative technique of the “juxtaposition of opposites,” but also Chaucer’s narrative tendencies. The special poetic achievements (and limitations) of each are seen most clearly when the two tales are read together, one in the light of the other, as their juxtaposition invites. The Knight’s Tale and the Miller’s Tale, when read together, are the representative examples which tell what Chaucer attempts to show through his narrative technique of the juxtaposition of opposites and what attitude he expects from a reader. Chaucer does not mechanically indoctrinate an unique view of the world to the readers. He, avoiding his authorial stance on a certain limited view embodied in each tale, forces the specific views of the narrative onto the reader. It is through the juxtaposition between the completely different two tales in such things as tale-teller, plot, character, language, and the narrative voice that Chaucer creates the multiplicity of voice and the plurality of theme, and he trains a reader to grope for meaning from various sides. (Daegu University)

가토 외고정 모델을 이용한 치밀체형 세라믹스의 골결합능 평가

이재협,이동호,이재학,공현식,안영준,류현승,서준혁,홍국선,김환,장봉순,이춘기 대한정형외과연구학회 2003 대한정형외과연구학회지 Vol.6 No.2

머시닝 센터의 정·동강성 평가에 관한 연구

이춘만,박동근,임상헌 한국공작기계학회 2005 한국공작기계학회 춘계학술대회논문집 Vol.2005 No.-

A machining center is a complex dynamic system whose behavior influences the machining stability and machined surface quality. This paper focused on establishment of a measurement system and experimental study on static, dynamic, and modal analysis of a machining center. The dynamic stiffness result by the analysis showed the weak part of the machining center. The results provided structure modification data for getting better dynamic behaviors.

JOB PROFILES 方法에 의한 職務分析의 人間工學的 評價

李東春,黃圭成 동아대학교 공과대학 부설 한국자원개발연구소 1990 硏究報告 Vol.14 No.1

The stress-relevant scaling of vocational activities ascertains and compares with job demands which are characterized by many different human activities. It is the aim of ergonomic efforts to harmonize the influences resulting from the configuration of work content, workplace, equipment, working environment and work organization with man's physical and mental abilities and his psychosocial needs. At present, physiological measurement still provide the best results for the evaluation of physical workoad and climatic stresses. Athough physiological measurements proved the best results, it is also true that the method is expensive and rather slow, not to speak of the problem of direct measurement of the psychological stresses and pressures of the job. For these reasons, the standardized ergonomic analysis in presented : Job profiles. The principles and possibilities of method are explained and their utilities are shown on a practical analysis of car-engine assembling.

Amphetamine 및 Phenethylamine 誘導體의 效果的인 確認 및 分析法에 관한 硏究

李允中,李康春,李東宣,尹汝生,崔点洙 成均館大學校 1982 論文集 Vol.32 No.-

Amphetamine and phenethylamine derivatives, methamphetamine, ephedrine and norephedrine react on heating with 7-chloro-4-nitrobenzo-2, 1, 3, -oxadiazole (NBD-CI) in alkaline methanolic solution to from highly fluorescent NBD-amine derivatives. The thin-layer chromatographic identification method and fluorometric determination of amphetamine and phenethiylamine derivatives are presented. Reaction conditions are also described with solvent effect on maximum excitation and emision wavelengths and fluorscence intensity of NBD-amine derivatives.

타워식 자동 공구 교환장치의 성능 평가

이춘만,노영화,박동근 한국공작기계학회 2006 한국공작기계학회 추계학술대회논문집 Vol.2006 No.-

This study is concerned about the development and performance evaluation of a tower type ATC(Automatic Tool Changer). Recently, many studies have been undergoing to reduce working time in field of machine center. Tower type ATC have been developed to reduce the stand-by time by shortening tool exchanging time. The developed system can store more number of tools in small space. In order to evaluate the performance of tower type ATC, feeding speed and noise are measured by a laser interferometer and a noise level meter.

산화코발트계 산소센서의 제작 및 그 특성

이재현,전춘배,이덕동 경북대학교 센서기술연구소 1990 센서技術學術大會論文集 Vol.1 No.1

Co_(1-x)Mg_(x)O ceramic oxygen sensors were prepared by pressing at 0.3 ~ 1.5 ton/cm^(2) with or without binder, intending to change porosity and average grain size on the surface purposely. Microstructures of prepared Co_(1-x)Mg_(x)O ceramics were observed, the electrical properties and the sensitivity characteristics for oxygen gas were investigated in the specimen temperature range of 700~1000 °C and for oxygen partial pressure range of 1~10^(-4) atm. Temperature dependence of the resistivity of the specimen showed NTC behavior, average grain size increased and porosity decreased with increasing compaction pressure. The slopes of the resistivity of the specimens on the oxygen partial pressure decreased with increasing average grain size and with decresing porosity. Particularly, specimen pressed by 0.3 and 0.5 ton/cm^(2) showed the highest sensistivity to oxygen gas. In general optimum operating temperature was 800 °C.

사회봉사활동 교육과정 운영 연구

이동규,이영춘,조주연 서울敎育大學校 學生生活硏究所 1998 學生生活硏究 Vol.24 No.-

This study is a base research on which the Seoul National University of Education implements the subject of 'Social Service Activities' as part of the formal curriculum. The purpose of this study was to suggest a systematic program for the curriculum implementation. The major research methods of this study were the analysis of precedent literature regarding Social Service Actities, and the interview method. As the research results, this study presents the discussion products regarding the concept·characteristics·contents of social service activites, the present situation of service activites in Korea and other countries, the preparation/attitude of university students who are going to practise those activites. As far as the concrete curriculum implementation is concerned, this study suggests twofold specific ideas. First, this study presents ideas on the curriculum form such as regarding in which semeter the subject is open, how students apply for the subjects, how to designate advising professors, what is the role of the professors, how to evaluate the activity results of students, and how to select the relevant institutions in which the activities are carried out. Second, this study suggests to construct an curriculum implementation committee and to make a implementaion guide. The committee is supposed to carry out manage/control the social service curriculum, and consider important matters on the curriculum impletation.

대구지역 산업연관모형에 의한 산업구조분석 : 섬유산업과 성장 유망산업을 중심으로

이춘근,여택동,김영재 한국경상학회, 한국국민경제학회 2003 경제연구 Vol.21 No.4

본 연구는 한국은행에서 작성한 전국 산업연관표를 연구목적에 따라 재분류 통합하여 비조사법에 의해 대구지역 산업연관모형을 작성하고, 이를 토대로 지역산업의 산업연관구조를 분석하고 대구지역에 대한 산업정책적 시사점을 도출하고자 한다. 특히 본 연구에서는 대구지역의 주요 전통산업이 섬유산업이며 그 중에서도 폴리에스터 직물제조가 주종을 이루고 있으므로, 섬유산업을 4개 부문(방적, 직조 및 섬유가공업, 편조업, 의복 및 장신품, 기타 섬유제품)으로 세분하여 대구지역 산업연관표를 작성하고 이를 이용하여 지역산업의 연관구조를 분석하고자 한다. 그리고 대구지역 산업연관모형을 이용한 산업구조분석 결과에 따라 대구지역 지역 전통산업인 섬유산업과 성장유망산업에 관한 산업정책적인 함의를 제시하고자 한다. 특히 본 연구에서는 대구지역의 성장유망산업을 선정함에 있어 입지계수법, 지역 산업연관모형과 같은 지역경제 분석기법을 이용하여 분석한 결과를 반영하여 검토하고자 한다. This paper analyzes the industrial structure in Daegu area. employing the regional input-output model. First, this paper explores the current situation of the regional economy and industrial structure in Daegu and attempts to examine the textile industry which has been a key industry in Daegu region. Second, this paper employs the input-output model to show the linkage effects of both forward and backward directions in the whole industry of Daegu region. Particularly, this paper analyzes the structure of Daegu's textile industry. while considering more categorized sub-divisions of the textile industry in order to investigate the structure of that industry. Lastly, this paper intends to provide the industrial policy implications for the local government as well as the central government. Moreover, the current paper intends to present some fruitful policy implications for the Milan Project that would help enhance the international competitiveness of the textile and apparel industry and thus revive the regional economy in Daegu.