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인삼(人蔘)의 Microbody에 관(關)한 전자현미경적(電子顯微鏡的) 연구(硏究)
김우갑,이봉희,오종연,Kim, Woop-Kap,Lee, Bong-Hee,Oh, Chong-Yon 한국현미경학회 1972 Applied microscopy Vol.2 No.1
The distribution, ultrastructure, and cytochemical properties of microbodies (peroxisomes) from the main roots and mature leaves of Panax ginseng were studied by electron microscopy included the activity of catalase in 3, 3'-diaminobenzidine (DAB) medium at pH 9, using glutaraldehyde-fixed tissues. The microbodies, which are about $0.5{\sim}1.5{\mu}$ diameter, were described from mesophyll cells of mature leaves and storage cells and cambial cells of main roots. The microbodies of the ginseng include the coreless, homogeneous matrix, in which catalase activities are present.
Shin Yongbeom,오종연,신동일 한국화학공학회 2023 Korean Journal of Chemical Engineering Vol.40 No.12
Green hydrogen, produced through the water electrolysis system, needs to be compressed to 200-700 bar for transportation, storage, and charging. Thus, it is necessary to consider the compression process of the produced hydrogen. In this study, an alkaline water electrolysis cell model was developed, and a system simulation model was proposed by integrating it into gPROMS. Total energy consumption and efficiency, according to operational conditions, were analyzed by considering the energy consumption for hydrogen compression to 200 bar through the developed model. The optimal operating pressure demonstrated in the previous study was less than 10 bar when the compression process was not considered. However, the energy efficiency was highest at 10-30 bar with the energy required for hydrogen compression. Nonetheless, a high-pressure operation may be subject to material restrictions or legal regulations. Therefore, material constraints and social regulations should be simultaneously considered to minimize the operating costs and maximize energy efficiency.
IPv6 멀티캐스트를 이용한 3D 가상 학술회의의 구현
김한수(Han-Soo Kim),오종연(Jong-Yeon Oh),장주욱(Ju-Wook Jang) 한국정보과학회 2003 한국정보과학회 학술발표논문집 Vol.30 No.1C
IPv6와 멀티캐스트 기술을 이용하여, 3D 인터페이스의 가상 학술회의를 구현하였다. 멀티캐스트를 위하여 PIM-SM 방식을 사용하였다. 사용자들에게 실제 학술회의에 참여함과 같은 가상 현실을 제공하기 위하여, VRML을 사용하여 3D 인터페이스를 제작하였다. 사용자가 회의장을 출입하는 등의 멀티캐스트 동작을 현실감 있게 하기 위하여, 그 행위에 따른 아바타를 도입하였다. We implement a 3D virtual conference using IPv6 multicast protocol suites. PIM-SM(Protocol Independent Multicast-Sparse Mode) is chosen for multicast. To provide users with the virtual reality that they are actually participating in an academic conference, 3D interface is built on VRML. Various multicast activities such as join/leave of a user into/out of sessions are represented by enter/exit of corresponding avatar to maximize the “sense of presence.”