http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김연구,사인진,김응선,Kim, Yeon-Ku,Sah, Injin,Kim, Eung Seon 한국재료학회 2020 한국재료학회지 Vol.30 No.10
UO<sub>2</sub> kernels, a key component of fuel elements for high temperature gas cooled reactors, have usually been prepared by sol-gel methods. Sol-gel processes have a number of advantages, such as simple processes and facilities, and higher sphericity and density. In this study, to produce 900 ㎛-sized UO<sub>2</sub> particles using an external gelation process, contact length extension of the NH<sub>3</sub> gas of the broth droplets pass and the improvement of the gelation device capable of spraying 14 M-NH<sub>4</sub>OH solution are used to form 3,000 ㎛-sized liquid droplets. To produce high-sphericity and high-density UO<sub>2</sub> particles, HMTA, which promotes the gelation reaction in the uranium broth solution, is added to diffuse ammonium ions from the outside of the gelation solution during the aging process and generate ammonium ions from the inside of the ADU gel particles. Sufficient gelation inside of ADU gel particles is achieved, and the density of the UO<sub>2</sub> spheres that undergo the subsequent treatment is 10.78 g/㎤; the sphericity is analyzed and found to be 0.948, indicating good experimental results.
서울시 주택재개발·주택재건축사업 추진 지역과 해제 지역의 특성 분석
이도길(Lee, Do-Ghil),윤병훈(Yun, Byung-Hun),김사인(Kim, Sa-In) SH도시연구원 2017 주택도시연구 Vol.7 No.1
This study aims to recognize the characteristics of the promoted districts and cancelled districts of housing redevelopment and housing reconstruction project. The subject of this study is 189 project districts. Both 121 promotion districts and 68 cancelled districts were analyzed by structural equation model. 7 Variables of structural equation model are proportion ratio, average land assessment, development actors, land owners, regulation, ratio of satisfaction of the residential environment and ratio of trust between neighbors and structural equation model have 11 hypotheses between 7 variables. It found different effect between promoted districts and cancelled districts, even if it is same variable. And some variables affect with only promoted districts or cancelled districts. ArcGIS 10.3.1 S/W, IBM SPSS Statistics 22.0 S/W and IBM SPSS Amos 22.0 S/W was used for analysis.