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김두회 조선대학교 외국문화연구소 1994 外國文化硏究 Vol.17 No.1
Lawrence는 어떤 특정한 장소의 영기(靈氣)와 기운이 인간에게 끼치는 감응에 대해 특이한 감지력을 보여준다. 최초의 모험소설로 부터 시, 기행문, 수필에 이르기 까지 로렌스의 영기는 작품의 배경을 통해 그의 메시지를 전달하는 데 있어 중요한 역할과 기능을 시사 하고 있다.
김린주,정욱진,권혁민,김두회 明知大學校 産業技術硏究所 1996 産業技術硏究所論文集 Vol.15 No.-
The effects of fatty acids related with elicitation mechanism were investigated in cell suspension cultures of Catharanthus roseus. The specific growth rate in control culture was 0,17 to 2.0 day-¹ and the cell doubling time(td) showed 3.5 to 4 days. The highest specific growth rate was obtained when the inoculum was added at 4g FCW, compared with 2 and 3 g FCW inoculum. The suspension cells were cultured at various concentrations of fatty acids and fatty acid was added at different culture time. The addition of methyl jasmonate among fatty acids only showed the slight promoting effect on cell growth but others did not show any increasing effect. The best injection period of fatty acid to promote the cell growth was the inoculation time.
LiNbO₃결정내의 [Li]/[Nb] 성분비에 따른 물성 변화
김상수,김두회 昌原大學校 基礎科學硏究所 1997 基礎科學硏究所論文集 Vol.9 No.-
A series of LiNbO₃single crystals with different [Li]/[Nb] ratios from melts having compositions varing between 48.6∼58.0 mol % Li₂O and a congruent melt with the addition of 6 wt. % K₂O were grown by the Czochralski method. A vapor transport equilibration(VTE) technique has been used to improve the homogeneity and adjust the [Li]/[Nb] ratio. These were investigated by Electron Paramagnetic Resonance(EPR), UV-and IR-spectrophotometry. The characteristics of the EPR spectra depend on the crystal field at the ?? sites, which in turn are influenced by the composition. In the VTE single crystal only the allowed transition takes place, having a very narrow width and symmetrical shape. The position of the fundamental absorption edge of LiNbO₃is a sensitive indicator for the [Li]/[Nb] composition of the single crystal. A pronounced blue shift occurs if the Li content rises. The decompositiom of the ?? vibrational bands using a Gaussian line shape function showed that in Li-dificient crystal the absorption bands consist of five(3465.9, 3469.5, 3480.8, 3489.4, 3500.6 ??) components in contrast to more or less perfect stoichiometric crystals which reveal to three(3465.8, 3469.7, 3481.1 ㎝??) components. When equilibrated which a Li-rich powder(65 mol % Li₂O), containing a mixture of LiNbO₃and Li₃NbO₄, crystal of nearly stoichiometric composition can be obtained.