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S, J, K 주파수영역에서 MgFe₂O₄ 단결정의 강자성공명 연구
박만장(M. J. Park),김기현(K. H. Kim),이혜정(H. J. Lee),김영호(Y. H. Kim) 한국자기학회 1996 韓國磁氣學會誌 Vol.6 No.5
We have manufactured FMR spectrometer over wide range(2-35 ㎓). In order to test FMR spectrometer, resonance absorption has been measured of the standard sample DPPH. The Q vaules of absorption line are 189-1096. As a result, We noticed that FMR spectrometer has been manufactured well. FMR studies of MgFe₂O₄ single crystal have been performed at S, J, K-band. The resonance lines have been observed for the each orientation of (100) plane at 300 K. The values of the magnetic anisotropy constant K₁ and the spectroscopic splitting g valule have been calculated from the ferromagnetic resonance curve, -2.9×10⁴erg/㎤, 2.02 at 23.89 ㎓, -2.2×10⁴erg/㎤, 1.89 at 5.3 ㎓ and -2.8×10⁴erg/㎤, 2.01 at 3.6 ㎓.
만성신부전 : 만성 신질환 환자에서 AST-120 (Kremezin(R))이 신기능 변화에 미치는 영향: 다기관 전향적 임상 연구
김동기 ( D. K. Kim ),김기현 ( K. H. Kim ),김양욱 ( Y. W. Kim ),김용림 ( Y. L. Kim ),김용수 ( Y. S. Kim ),김현철 ( H. C. Kim ),곽임수 ( I. S. Kwak ),오하영 ( H. Y. Oh ),이강욱 ( K. W. Lee ),조원용 ( W. Y. Cho ),최기철 ( K. C. Choi ),최 대한신장학회 2008 춘계학술대회 초록집 Vol.28 No.1
Computer Simulation을 통한 MPPT제어 알고리즘 고찰
김기현(K.H. Kim),유권종(Y.S. Kim),정영석(G.W. Yu),김영석(Y.S. Jung) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
As maximum power point tracking(MPPT) of photovoltaic(PV) power generation system changes with atmospheric condition(e.g. solar insolation, temperature and load condition), an important consideration m the design of efficient PV system IS to track the maximum power operating point(MPOP) correctly Therefore, this paper show the simulation result that always operated at MPT. The work was carried out by constant-voltage control, P&O, IncCond algorithm. This algorithm has successfully tracked the MPOP, even in case of rapidly change atmospheric conditions