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여환진,여수동,이무상,배준웅,이우붕,이광필 경북대학교 과학교육연구소 1997 科學敎育硏究誌 Vol.21 No.-
Concept of energy is introduced in the teaching quantitative relating of chemical reactions. The relations between the kind of matter and its mass are clarified in terms of energy of in calorie involved in the reaction. The heat quantity and strength of chemical bond are also explained by a model. Such an approach is able to give students deeper understanding of quantitative relation existing in chemical reactions.
6차 교육과정에 의거 개정된 8종의 중학교 1학년 교과서 중에서 녹는점 측정 실험의 비교 분석 및 개선
이무상,여수동,여환진,이우붕,배준웅,이광필,남상일,최윤정 경북대학교 과학교육연구소 1997 科學敎育硏究誌 Vol.21 No.-
The purpose of this study is to comparatively analyze and improve the melting point experiment in the first grade middle school science textbooks on the basis of the 6th revised curriculum. From the results of the melting point experiment of paradichlorobenzene, we have found two problems on the measurement of melting point and have suggested the solution of these problems.
이충길,이우붕,여환진,이광필,배준웅,이무상,여수동,정원우 慶北大學校 師範大學 科學敎育硏究所 1998 科學敎育硏究誌 Vol.22 No.-
The purpose of this study was to develop the PC program of learning aids by using three dimension molecular model for high school chemistry class. Specifically, this study developed instructional materials of molecular structure and crystall model using Virtual Reality modeling Language The developed program would be expected to be helpful for constructing image of molecular and crystal structure in high school students. Also, it may be useful for chemistry teachers who want to introduce molecular and crystal model into their classes.
6차 교육과정에 따른 고등학교 화학II 교과서에서의 극성 및 무극성 분자의 전기적 성질 실험의 비교 분석 및 개선
여수동,이무상,여환진,이광필,이우붕,배준웅,천영숙 慶北大學校 師範大學 科學敎育硏究所 1998 科學敎育硏究誌 Vol.22 No.-
The purpose of this study is to comparatively analyze and improve the Electronic properties of Polar and Nonpolar Molecules in the High School Chemistry II Textbooks on the Basis of 6th Education Curriculum. From the results of Experiment about the Electronic properties of Polar and Nonpolar Molecules, we have found some problems and have suggested the solution of these problems.
U. Yong(용의중),D. Kim(김동환),H. Kim(김호중),D. G. Hwang(황동규),S. Cho(조성건),H. Nam(남효영),S. Kim(김세진),T. Y. Kim(김태영),U. Jeong(정운룡),K. Kim(김기훈),W. K. Chung(정완균),W. H. Yeo(여운홍),J. Jang(장진아) Korean Society for Precision Engineering 2021 한국정밀공학회 학술발표대회 논문집 Vol.2021 No.11월
Over the years, engineered heart tissue (EHT), composed of cardiac cells and a hydrogel, has been considered as a promising in-vitro cardiac model in that it can reproduce the physiological contractions of an actual animal heart. In particular, the contractile force of EHT is one of the representative factors to evaluate drug-induced cardiotoxicity that is a major cause of the withdrawal of drug development. Although there have been a lot of methods to monitor the contractile force of the EHT, most of them are based on optical readout systems that have to process a huge amount of image data. Recently, a strain gauge-based microphysiological system was developed to monitor the contractile force of a laminar cardiac tissue, which can acquire real-time data with a relatively small amount of data. However, the system can monitor only few layers of cardiomyocytes, which are physiologically less relevant environment compared to EHT. Here, we developed a hybrid bioprinted tissue platform, consisting of six bipillar-grafted strain gauges (BPSGs) and one wireless device, that enables online monitoring of the contractile forces from 6 different EHTs in real time during culturing. Furthermore, we confirmed that our system can detect the effects of commercially available drugs on EHTs.