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Choi, Dukhyun,Choi, Min-Yeol,Choi, Won Mook,Shin, Hyeon-Jin,Park, Hyun-Kyu,Seo, Ju-Seok,Park, Jongbong,Yoon, Seon-Mi,Chae, Seung Jin,Lee, Young Hee,Kim, Sang-Woo,Choi, Jae-Young,Lee, Sang Yoon,Kim, Jo WILEY-VCH Verlag 2010 ADVANCED MATERIALS Vol.22 No.19
<B>Graphic Abstract</B> <P>The cover shows an image of fully rollable transparent nanogenerators synthesized using chemical vapor deposition grown large-scale graphene sheets as transparent electrodes and piezoelectric ZnO nanorod arrays. Sang-Woo Kim, Jae-Young Choi, and co-workers report on p. 2187 the electrical and structural stability of the nanogenerators, with excellent charge scavenging performance under external mechanical loads such as bending and rolling. This study shows that graphene-based nanogenerators are very promising for self-powered rollable transparent device applications. <img src='wiley_img_2010/09359648-2010-22-19-ADMA201090066-content.gif' alt='wiley_img_2010/09359648-2010-22-19-ADMA201090066-content'> </P>
임재윤(Jae Yoon Im),최형섭(Hyungsub Choi) 역사비평사 2017 역사비평 Vol.- No.118
This article critically reviews the “model” of Korean development designed by Choi Hyung Sup, Minister of Science and Technology of the Park Chung Hee government. The model has been an active template in Korea’s official development assistance (ODA) of science and technology. This acknowledgement comes from the belief that the model was effective in the development of Korea, and it attained widespread support from senior scientists and administrators of science in Korea. In this paper the authors highlight the fact that the model was from the beginning designed to be applicable in other countries. The argument is that the model was formulated within the context of Cold War development studies supported by international organizations. Through the process, Choi’s model acquired its characteristics of emphasizing legal and institutional set-ups, the role of national leaders and the national laboratories in introducing, digesting, and improving high technology.
최재혁,윤두호,윤석훈 한국해양대학교 산업기술연구소 2002 연구논문집 Vol.19 No.-
Heat transfer characteristics of self-oscillating heat pipe were experimentally investigated for the effect of fill charge ratios and heat loads. The heat pipe used for this study is made of copper capillary, has 0.002m internal diameter, a 0.34m length in one turn and consists of 19 turns. Heating and cooling section each have a length of 70mm. Water was used as working fluid inside the heat pipe. As the experimental results, the self oscillating heat pipe was operated b self-exited oscillation and circulation of working fluid and the oscillation within the self-oscillating heat pipe assumed chaotic behavior.
Direct Stiffness Matrix에 의한 線型트러쓰 構造物의 解析
尹載殖,崔外鎬 全北大學校 1969 論文集 Vol.11 No.-
The direct stiffness matrix method has gained prominence in the last decade decade mainly for determining internal forces and displacementsof highly redundant strctures. A computerized analytical approach, using the direct stiffness matrix method, is developed for plane and space truss andtwo examples are solved for each truss. This method is more concise than the other matrix methods. Therefore the computer program data input are greatly simplfied.
栽培中 Tomato 果實의 窒酸鹽 및 亞窒酸鹽과 Ascorbic acid의 含量變化
尹衡植,申大休,崔載春,權重浩 慶北大學校 1982 論文集 Vol.33 No.-
This experiment was carried cut to investigate the relationship between nitrite and ascorbic acid contents in two kinds of tomato fruits namely, Bokwang, Suekwang, which were different distinguished in growth periods during culture. The results obtained were as follows. The nitrate content in two kinds of tomato fruits was relatively higher in Bokwang than Suekwang. It indicated high content as 5.8-12.5 ppm in flesh and 0.3-2.5 ppm in gelatinous pulp. In the beginning of growth period, nitrate content in flesh was 50-62.5ppm, and in the latter period was 21.3-38.4ppm. In the case of gelatinous pulp, it was decreased from 14.0-16.2ppm in the beginnig period to 9.3-10.7ppm in the latter period. In the case of nitite, there was no difference between two varieties. Nitrite content during growth increased from 0.15ppm to 0.21ppm in flesh and from 0.06ppm to 0.1ppm in gelatinous pulp. There was no difference between two varieties during growth in total ascorbic acid content and its concentration was 24.2-27.5mg in gelatinous pulp and was 13.8-18.6mg in flesh. The difference between two parts was about 10mg. In the changes of nitrate and nitrite content in tomato fruits, nitrate was decreased, whereas nitrite content was increased. In the changes of nitrate and ascorbic acid content in tomato fruits, nitrate content was decreased but that of ascorbic acid was increased slightly. In the changes of nitrite and ascorbic acid content in tomato fruits, nitrite content was increased and that of ascorbic acid was slightly increased too.
반안면 왜소증 환자의 악골교정술과 골, 진피지방의 동시 이식을 통한 안면부 교정 치험례
최희윤,박봉권,최봉근,안희창,안덕균,류재만 大韓成形外科學會 1999 Archives of Plastic Surgery Vol.26 No.3
Hemifacial microsomia is a common congenital craniofacial deformity involving bone and soft-tissue. Mandibular hypoplasia is the most obvious skeletal manifestation of hemifacial microsomia. In the past, complete realignment of the skeleton was preferred to soft-tissue correction, which was clearly second choice. However, in this study, simultaneous correction of bone and soft tissue deformities were equally important in treatment of hemifacial microsomia. One-stage and simultaneous bone and soft tissue reconstruction is possible and staged operations of the skeleton and soft tissue are no longer necessary, except in special cases. Even in children and adolescents, good results and normal growth potential can be achieved with simultaneous correction of bone and soft tissue.
농부가 아닌 환자에서 발생한 긴털가루진드기(Tyrophagus Putrescentiae)에 의한 기관지천식 1례
최대로,김형수,고창옥,김희선,윤호성,박용범,김상훈,이재영 대한천식 및 알레르기학회 2004 천식 및 알레르기 Vol.24 No.1
Storage mites are believed one of the most important allergens in farmers and rural regions. Tyrophagus putrescenitiae, belonging to storage mites, is found not only within storehouses but also in the house dust, and the third most common mites following Dematophagoides farinae and Dermatophagoides pteronyssnus in house dust in Korea. The sensitization rate to Trophagus putrescentiae was reported as high as that of house dust mite in patients visiting the allergy clinic in large cities in Korea. We experienced a 69-year-old man who had suffered from dyspnea, wheezing, and coughing for 10 years. He retired from the teaching profession, and had lived in a large city. Deajeon. The skin prick test showed a positive reaction to Tyrophagus putrescentiae and negative reactions to house dust mites. The bronchial challenge test with Tyrophagus putrescentiae showed late asthmatic reaction. We confirmed a Tyrophagus putrescentiae induced asthma in non occupational setting. (J Asthma Allergy Clin Immunol 24 : 141-5, 2004)