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이광수(Lee Kwang Su) 한국미술교육학회 2013 美術敎育論叢 Vol.27 No.1
근대 전환기에 한국의 산수화는 전통의 계승과 현대성의 표출이라는 문제에 직면한다. 게다가 일제 강점기와 큰 대화라는 역사적 소용돌이에 전통과 자신의 정체성에 대한 물음은 오늘 날에도 여전히 한국화의 담론으로 이어지고 있다. 이러한 시기 조선의 진경산수를 계승하고 이를 토대로 자신의 개성과 양식을 확립한 화가로 노수현, 이상범, 변관식을 거론하고 있는데, 이 세 화가는 문인화에 대한 이해를 바탕으로 자신의 예술 세계를 확립하고 근대 한국 산수화의 새 지평을 열었다는 공통점을 가지고 있다. 그러나 한국의 화단은 일제 강점기라는 특수한 상황과 해방 후 서구 문물의 충격 속에 그 전통성을 일정 부분 상실하기도 하며 중국이나 일본과 다른 양상이 전 개되고, 화론에 대한 답론은 상대적으로 활발하지 못한 부분이 있기도 하다. 하지만, 그들의 예 술에 대한 열정은 한국화단에 소중한 족적을 남기고 있으며, 그들 의 변화되는 화풍에서 충분히 한국화의 조형적 특성을 보여주었다고 생각한다. 이 세 대가의 예술적 성과와 업적은 그동안 많은 연구를 통해 이미 소개되어 있다. 이에 본 연구자는 시각을 달리하여, 의경론(意境論)을 통해 그들의 예술관을 살펴 보고자 하였다. 의경 이란 용어는 우리에게 아직은 생소할 수도 있지만, 점차 확대 되는 추세이고 중국의 경우 이미 예술철학의 한 분야로 자리 잡고 있어, 이 이론을 통한 고찰은 그들의 조형 의식을 드러내는 데 효과적이라고 판단하였다. Korean modern landscape painting has the same way of the periodically changing period because of the Japanese colonial era. inflow of Western painting method. etc. In the stream. representative painters creating modern landscape paintings initiatively can be Noh. Soo Hyun. Lee. Sang Bum and Byun. Kwan Sik. They have common things that they were educated direclty by Jo. Suk Jin(趙錫晉. 1885-1920) and An. Joong Sik (安中植. 1861-1919) who are representative landscape painters at the end of the Joseon Dynasty. their root is in the traditional style of painting and they show innovative style of painting by introducing realistic viewpoint actively after the Japanese colonial era. This study will consider formative awareness of Noh. Soo Hyun. Lee. Sang Bum and Byun, Kwan Sik who are representative painters of modern landscape painting through the Yi Jing factor shown their paintings. oh, Soo Hyun expressed Yi Jing landscape through his ideal landscape and Lee. Sang Bum and Byun. Kwan Sik expressed traditional landscape with the most creative method of expression by exploring real landscape or sutra landscape. Of course, they shouldn't manufacture works by recognizing Yi Jing or aesthetic concept at that time and they don't seem to discuss directly Yi Jing through the painting discussion like Chinese painters. Therefore. it can be difficult to substitute the theory of Yi Jing uniformly, but it was judged to consider formative characteristics by finding Yi Jing factors sufficiently from their painting achievements and working characteristics. It is related to the tradition of painting in the literary artists' style to some degree. But. the most important thing is common thing that three painters created inner warmth newly. And. it's significant that they opened a new prospect of Korean modern landscape painting by sublimating it in their own archetype.
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이광수,박경숙,Lee, Kwang-Soo,Park, Kyung-Sook 한국식품영양학회 2018 韓國食品營養學會誌 Vol.31 No.6
The purpose of this study was to investigate effects of Crataegus pinnatifida var. psilosa extracts obtained from 95% methanol and water. Methylene chloride, ethyl acetate, and methanol were used to fractionate the 95% methanol extract and each fraction was testified total polyphenol contents, electron donating abilities, the scavenging abilities of superoxide anion radical, as well as hydrogen peroxide. Extraction yields of 95% methanol and water from Crataegus pinnatifida var. psilosa were 25.40%, 23.12% respectively. Total polyphenol contents were $28,708.0{\pm}1,755.05{\mu}g\;GAE/mL$ in 95% methanol, revealing the highest among them, $12,726.67{\pm}479.33{\mu}g\;GAE/mL$ in water extract, $15,854.67{\pm}498.38{\mu}g\;GAE/mL$ in methanol fraction, $11,810.67{\pm}584.48{\mu}g\;GAE/mL$ in ethyl acetate fraction, and $5294.67{\pm}190.36{\mu}g\;GAE/mL$ in methylene chloride fraction. Total polyphenol contents revealed significant differences (p<0.05) between the solvents. In the experiment of the electron donating ability, water extract revealed $84.33{\pm}0.1%$ scavenging ability, the highest. Other extracts and fractions were $81.8{\pm}1.11%$ for water, $79.73{\pm}1.32%$ for ethyl acetate fraction, $75.73{\pm}2.17%$ for methylene chloride fraction, and $42.1{\pm}5.01%$ for methanol fraction, the lowest electron donating ability. Electron donating abilities revealed significant difference (p<0.05) between the solvents. In the experiment of superoxide anion radical scavenging ability, ethyl acetate fraction($0.0026{\pm}0.0002$) had the highest scavenging ability, and the others revealed slight increase rather than decrease in scavenging ability. Hydrogen peroxide scavenging ability revealed the highest in methanol fraction ($-0.00206{\pm}0.00165$) and the others were as follow; water extract ($0.00157{\pm}0.00249$), 95.0% methanol extract ($0.005{\pm}0.0036$), methylene chloride fraction ($0.0039{\pm}0.00364$), and ethyl acetate fraction ($0.0002{\pm}0.00059$).
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나문재(Suaeda glauca (Bunge) Bunge) 추출물과 분획물의 효능에 관한 연구
이광수,박경숙,Lee, Kwang-Soo,Park, Kyung-Sook 한국식품영양학회 2019 韓國食品營養學會誌 Vol.32 No.6
In this study, S. glauca (Bunge) Bunge extract was testified total polyphenol contents, electron donating ability on DPPH, and scavenging ability of superoxide anion radical and hydrogen peroxide. Total polyphenol contents of S. glauca (Bunge) Bunge extract were 7,053.30±915.93 ㎍ GAE/mL. In the fractions, fraction by ethanol was the highest content of 10,973.30±1,000.24 ㎍ GAE/mL. Fractions of ethyl acetate and water were 2,386.70±166.53 ㎍ GAE/mL, 2,413.30±41.63 ㎍ GAE/mL respectively. It was shown that total content of polyphenol according to solvent was significant relation at p<0.05. In the experiment of the electron donating ability, 70% ethanol extract and methylene chloride fraction were -246.15±24.17%, -254.01± 16.54% respectively. In case of ethyl acetate fraction, it was the highest electron donating ability to DPPH radical, 39.06±0.34%, and then water fraction of 36.71±5.55%, ethanol fraction of 29.77±2.57%, gradually. Electron donating abilities revealed significant difference (p<0.05) between the solvents. The superoxide radical scavenging ability of standard material was 0.029±0.0011; 70% ethanol extract of 0.022±0.00052, methylene chloride fraction of 0.027±0.00031, ethyl acetate fraction of 0.024±0.0011, ethanol fraction of 0.021±0.00024 and water fraction of 0.024±0.00019. Hydrogen peroxide scavenging ability of 70% ethanol extract was -0.0029±0.00040 and the others were as follow; methylene chloride fraction (-0.0042±0.00058), ethyl acetate fraction (-0.003± 0.0041), ethanol fraction (-0.0029±0.0015) and water fraction (-0.0028±0.00090).
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이광수,박경숙,Lee, Kwang-Soo,Park, Kyung-Sook 한국식품영양학회 2016 韓國食品營養學會誌 Vol.29 No.6
In this study, Ilex serrata Thunb was extracted with 70% methanol and concentrated under reduced pressure to measure its total polyphenol contents; furthermore, we examined the effect of electron donating ability of the various extracts. The extract was fractionated using different solvents such as methylene chloride, ethyl acetate, and methanol to investigate total polyphenol contents and electron donating abilities. The total polyphenol contents were $1,058.59{\pm}85.85{\mu}g\;GAE/mL$ in 70% methanol, $297.29{\pm}29.43{\mu}g\;GAE/mL$ in methylene chloride, $313.28{\pm}9.22{\mu}g\;GAE/mL$ in ethyl acetate, and $837.82{\pm}31.16{\mu}g\;GAE/mL$ in methanol. The total polyphenol contents showed significant differences (p<0.05) between the solvents. The electron donating abilities were $72.93{\pm}0.29%$ for 70% methanol extract, $14.02{\pm}2.01%$ for methylene chloride, $24.05{\pm}1.75%$ for ethyl acetate, and $84.08{\pm}1.95%$ for methanol. The electron donating abilities were significantly different (p<0.05) between the solvents. The two portions of Ilex serrata Thunb extracts obtained from methanol showed significantly relevant results in the total polyphenol contents and electron donating ability, which was higher than the original extract.
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양파 추출물에서의 글루타티온 전달효소 활성 저해제에 관한 연구
이광수,박경숙,Lee, Kwang-Soo,Park, Kyung-Sook 한국식품영양학회 2013 韓國食品營養學會誌 Vol.26 No.4
In this study, an ethanol extract being obtained from Allium cepa var. cepa examins the inhibitory effects on the glutathione S-transferase and the separation had been done by silica-gel column chromatography using various eluents, such as ethyl acetate, methanol, and 50% methanol. A volume of column fraction was 50ml and evaporation has been performde by the rotary evaporator under reduced pressure. Each fraction is being examined by thin layer chromatography and the UV spectrum at 365 nm was used to investigate separation patterns of spots on thin layer chromatography. When the eluent was changed, the spot patterns showed another different pattern on thin layer chromatography, so on. Fractions showing similar pattern are combined and eventually, three fractions are obtained. Each fraction is testified to examine the inhibition effects on glutathione S-transferase. All of these showed inhibition effects on glutathione S-transferase. The GC-MS shows that each fraction contains more than 2 compounds.
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