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국방경영 효율화를 위한 한국공군 총수명주기체계관리(TLCSM) 발전방향
이왕근,엄정호 대전대학교 군사연구원 2006 군사학연구 Vol.11 No.-
A study on the improvement of ROKAF total life cycle system management(TLCSM) for Efficient Defense management.
이왕근 全南大學校 師範大學 科學敎育硏究所 1982 科學敎育硏究誌 Vol.7 No.1
Pyropheophytin a was preared by decarbomethoxylation of the C-10 carbomethoxy group of pheophytin a Methy1 pyropheophorbide a was prepared by methanolysis of pyropheophytin a. The absorption and nmr spectra of methyl pyropheophorbide a was studied.
양이온 라디칼의 유도에 의한 아조알칸과 아릴히드라죤 화합물의 산화성 반응
李旺根 全南大學校 師範大學 科學敎育硏究所 1986 科學敎育硏究誌 Vol.11 No.1
Reaction of Tris (p- bromophenyl) aminium hexafluoroantimonate, (p-BrC6H4)3 N'+SbF6-, with 1,4-Diphenylazomethane (DPAM) in acetonitrile led to the formation of 1,2,4-triazoles. Formation of the triazoles is attribute d to cationradical-induced oxidative cycloaddition of benzaldehyde benzylhydrazone, the tautomer of DPAM, to the solvent nitriles.
이왕근 全南大學校 師範大學 科學敎育硏究所 1981 科學敎育硏究誌 Vol.6 No.1
The crude chlorophyll extract was prepared from spinach leaves by means of two-phase extraction method, followed by a preparation of the chlorophylIs as aggregates. From the chlorophyll mixture metal free chlorophyll derivatives, pheophytin a and b, were prepared by passing dry Hcl gas and a separation on a silica gel column.
이왕근 全南大學校 師範大學 科學敎育硏究所 1980 科學敎育硏究誌 Vol.5 No.1
Resorcinol로부터 5-hydroxycoumarin을 합성하고 이의 구조에 대하여 연구하였다. 5-hydroxycoumarin was synthesized from Resorcinol Via 2.6-dihydroxybenzaldehyde and their sutrctures were studied.
이왕근(Wang-geun Lee),김영식(Youngsik Kim) 한국해양환경·에너지학회 2021 한국해양환경·에너지학회 학술대회논문집 Vol.2021 No.5
전지 수요의 폭발적 증가에 따라, 값싸고 친환경적인 전지 개발을 위한 연구가 활발히 이뤄지고 있다. 차세대 이차전지 중 하나인 이차 해수전지는 해수를 양극으로 활용, 리튬 이온전지의 리튬 대신 해수의 나트륨 이온을 전하운반자로 사용하여 에너지를 저장하는 전지로, 무한한 해수자원을 활용하기 때문에 경제적이고 환경친화적이다. 특히 해양환경에서 직접 노출되어 사용되는 특징으로, 다른 전지가 접근하기 어려웠던 해양분야 전력장치 분야에서 차세대 전력장치로 주목받고 있다. 2차 해수전지는 2014년 처음 개념이 정립된 이후 급속히 발전하여 소재개발, 셀 및 모듈 연구, 실증을 위한 상용화연구 등이 동시적으로 활발히 이뤄지고 있다. 본 연구에서는 2차 해수전지의 개발 배경 및 작동원리, 해수전지를 구성하는 양극·음극·고체전해질의 연구개발 동향, 그리고 해수전지 기술에서 파생된 담수화·이산화탄소 포집 등 응용 기술을 소개한다. 나아가 2차 해수전지가 적용될 수 있는 해양기기 및 해양구조물, 선박 및 항만 전력공급 시스템 등 해양기술분야 다양한 제품에 대해 기술한다. With the explosive increase in battery demand, research on the development of inexpensive and eco-friendly batteries has been actively conducted. The secondary SeaWater Battery (SWB) is a battery that stores energy by using seawater as a cathode, and is economical and environmentally friendly by utilizing infinite seawater resources. Particularly, it is attracting attention as a next-generation battery in the field of marine device, where it is difficult to access for other batteries because of the harsh marine environment. Since the concept of secondary SWB was first established in 2014, material research, cell and module development, and commercialization and demonstration are simultaneously being actively conducted. Herein, the secondary SWB background and operating principle, material research, cell development, and applied technologies such as desalination and CO<sub>2</sub> capture are introduced. Furthermore, it describes various products in the marine technology field, to which secondary seawater cells could be applied, such as offshore equipment, offshore structures and power supply systems for ships and ports.
이왕근(Wang-Geun Lee),정용진(Yong-Jin Jeong),전성즙(Seong-Jeub Jeon) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
In this paper, a method to cope with short-term blackout is proposed. The proposed method uses a capacitor bank consisting of supercapacitors. A supercapacitor is a good means for short-term energy storage. The proposed circuit is simple and accordingly easy to construct and to control. A prototype is constructed and experimental results are presented.
이왕근(Wang-Geun Lee),전성즙(Seong-Jeub Jeon),서정기(Jeong-Kee Seo) 전력전자학회 2008 전력전자학술대회 논문집 Vol.- No.-
In this paper, a brief introduction to a new synchronous generator, which has an exciter with hetero poles, is given. A new automatic voltage regulator is designed for the new synchronous generator.
이왕근(Wang-Geun Lee),전성즙(Seong-Jeub Jeon),변영복(Young-Bok Byun) 전력전자학회 2008 전력전자학술대회 논문집 Vol.- No.-
In this paper, differences between average power theory and instantaneous power theories are considered in view point of practical application.