목적: 조명에 따른 동공 크기가 고위수차에 미치는 영향을 알아보고자 하였다. 방법: 안질환이나 전신질환이 없고, 기타 관련 수술 경험이 없는 평균연령 22.5±1.04세의 35명을 대상 자로 선정하여 수차를 측정하였다. i.Profiler plus 기기의 특성상 명소시 상태에서 설정된 동공 크기 ʻ3 mmʼ 를 명소시 유사 환경, 반암실 상태에서 설정된 동공 크기 ʻmaximumʼ을 박명시 유사 환경 상태로 가정하였다. 동공 크기와 등가디포커스와 등가착란원의 상관 분석을 실시하였다. 결과: 대상자의 동공 크기를 3 mm, maximum으로 나뉘어 고위수차를 측정하였을 때, RMS는 0.30±0.13 ㎛ 및 0.38±0.15 ㎛로 나타났다. 총 고위수차의 등가디포커스가 동공 크기 3mm에서 0.28±0.14 D와 maximum에서 0.41±0.16 D 이었고, 유의한 차이를 보였다(p=0.000). 동공 크기 3 mm와 maximum 에서 구면수차, 코마수차, 트레포일 수차의 등가디포커스의 차이는 각각 0.07 D, 0.04 D, 0.02 D 이었고, 구면수차(p=0.000) 및 코마수차(p=0.000)에서 유의한 차이가 있었다. 등가디포커스와 등가착란원 사이에서 유의한 양의 상관관계가 존재하였다(총 고위수차(R2=0.7045, p<0.01), 구면수차(R2=0.9376, p<0.01), 코마 수차(R2=0.8429, p<0.01), 트레포일수차(R2=0.7824, p<0.01)). 결론: 수차 측정 결과를 등가디포커스로 나타내어 교정이 필요한 정도를 디옵터로 표현할 수 있었다. 고 위수차의 교정이 고려되지 않았을 경우, 교정시력에 변화가 있을 것으로 예측되어 고위수차의 시각적 불편함에 대한 연구가 중요하다고 사료된다.

This paper aims to identify the impact on self-satisfaction of shopping tendencies and purchase behaviors for luxury goods. The research was conducted by survey method using questionnaires. The subjects of this study were female consumers from 20 to years old with a high pusrchasing capability for luxury goods. Using the statistics program SPSS 21.0, factor analysis, reliability analysis, one-way ANOVA, and multiple-regression analysis were executed. The analysis results are summarized below. For shopping tendency depending on ages, pleasure pursuit tendency showed insignificant difference in 40~50s, but significant difference in 20~30s. For the self-satisfaction, the interpersonal satisfaction showed the difference by age group, which was much higher in the respondents in 30~50s than those in 20s. Individuality pursuit tendency and rational shopping tendency had impact on self-satisfaction and rational shopping tendency on interpersonal satisfaction in 20s. Pleasure pursuit tendency and rational shopping tendency had impact on self-satisfaction and interpersonal satisfaction and pleasure pursuit tendency on the economic satisfaction in 30s. Pleasure pursuit tendency had impact on self-satisfaction and economic satisfaction and rational satisfaction on interpersonal satisfaction in 40s. Pleasure pursuit tendency and rational shopping tendency had impact on self-satisfaction and interpersonal satisfaction in 50s. High quality had impact on self-satisfaction and economic satisfaction and practicality on interpersonal satisfaction in 20s. High quality had impact on self-satisfaction and interpersonal satisfaction in 30s. High quality had impact on interpersonal satisfaction in 40s. High quality had impact on all elements of self-satisfaction for the respondents in 50s, practicality had negative impact on interpersonal satisfaction.

The effect of cobalt precursor on the structure of Co supported multi-walled carbon nanotubes (MWCNTs) were studied by using X-ray photoelectron spectroscopy (XPS). MWCNTs were treated with a mixture of nitric and sulfuric acids and decorated with cobalt and/or cobalt oxides via aqueous impregnation solutions of cobalt nitrate or cobalt acetate followed by reduction in hydrogen. XPS was mainly used to investigate the phase of cobalt on MWCNTs after reduction with H2 flow at 400℃ for 2 h. Higher cobalt-nanoparticle dispersion was found in the MWCNTS prepared via cobalt nitrate decomposition. A typical XPS spectrum of Co 2p showed the peaks at binding energy (BE) values equal to 781 and 797 eV, respectively. It is found that cobalt nitrate supported MWCNTs is more dispersive and have catalytic activity than that of cobalt acetate supported MWCNTs at same preparation condition such as concentration of precursor solution and reduction environment.

Phytochemical investigation of the sesame dregs of Sesamum indicum was conducted by open column and prep-HPLC chromatography. Two phytosterols (1 and 2) and two lignans (3 and 4) were isolated from the MeOH extracts of sesame dregs, and identified as β-sitosterol (1), daucosterol (2), sesamin (3), and sesamolin (4) by spectral analysis. Although these compounds were already isolated from sesame, it is important that they were still main phytochemical components in the sesame dregs.