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360-degree Viewable Cylindrical Integral Imaging System Using Electroluminescent Films

  • Jung, Jae-Hyun;Park, Gil-Bae;Kim, Yun-Hee;Lee, Byoung-Ho
    • 한국정보디스플레이학회:학술대회논문집
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    • 2009.10a
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    • pp.1254-1257
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    • 2009
  • A 360-degree viewable three-dimensional display based on integral imaging is proposed. The cylindrically arranged point light source array which is generated by electroluminescent (EL) pinhole film reconstructs 360-degree viewable virtual 3D image at the center of the cylinder. In this paper, the principle of operation and experimental results are presented.

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360-degree Viewable Cylindrical Integral Imaging System Using Electroluminescent Films

  • Jung, Jae-Hyun;Park, Gil-Bae;Kim, Yun-Hee;Lee, Byoung-Ho
    • 한국정보디스플레이학회:학술대회논문집
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    • 2009.10a
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    • pp.1330-1333
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    • 2009
  • A 360-degree viewable three-dimensional display based on integral imaging is proposed. The cylindrically arranged point light source array which is generated by electroluminescent (EL) pinhole film reconstructs 360-degree viewable virtual 3D image at the center of the cylinder. In this paper, the principle of operation and experimental results are presented.

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Antioxidant and Cellular Protective Effects of Parthenocissus tricuspidata Stem Extracts Fermented by Lactobacillus pentosus (Lactobacillus pentosus 발효에 의한 담쟁이덩굴 줄기 추출물의 항산화 및 세포보호 효과)

  • Park, So Hyun;Seong, Joon Seob;Lee, Keon Soo;Park, Young Min;Xuan, Song Hua;Cha, Mi Yeon;Kang, Hee Cheol;Park, Soo Nam
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.43 no.3
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    • pp.255-263
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    • 2017
  • In this study, the antioxidant activities, cellular protective effects, and inhibitory effects on elastase of non-fermented and fermented extracts of Parthenocissus tricuspidata (P. tricuspidata) stem using Lactobacillus pentosus were investigated. The free radical scavenging activities ($FSC_{50}$) of non-fermented and fermented extracts were 42.3 and $34.5{\mu}g/mL$, respectively, in which the activity after fermentation was approximately 18.4% higher. Reactive oxygen species (ROS) scavenging activities ($OSC_{50}$) in $Fe^{3+}-EDTA/H_2O_2$ system of non-fermented and fermented extracts were 2.6 and $2.5{\mu}g/mL$, respectively. The activity after fermentation was approximately 4.2% higher. In the $^1O_2$-induced cellular damage of erythrocytes, the cellular protective effects (${\tau}_{50}$) of non-fermented and fermented extracts were 126.4 and 173.0 min at $50{\mu}g/mL$, respectively. The activity after fermentation was approximately 34.0% higher. The effect of fermented extract was 3.9 times higher than $(+)-{\alpha}$-tocopherol (${\tau}_{50}=43.4min$), known as a lipophilic antioxidant at $50{\mu}g/mL$. The inhibitory effect of elastase was investigated to predict the anti-wrinkle efficacy using Hs68 human fibroblasts cells. The elastase inhibitory activities ($IC_{50}$) of non-fermented and fermented extracts were 873.6 and $687.8{\mu}g/mL$, respectively, and the activity after fermentation was approximately 21.3% higher. These results indicated that fermented extract of P. tricuspidata stem has potentials as natural cosmetic ingredients with antioxidant and anti-wrinkle effect.

Reliability Analysis of LNG FPSO Liquefaction Cycle in DEVS Environment (DEVS 환경에서 LNG FPSO 액화 공정의 신뢰도 해석)

  • Ha, Sol;Ku, Namkug;Roh, Myung-Il
    • Korean Journal of Computational Design and Engineering
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    • v.18 no.2
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    • pp.138-147
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    • 2013
  • The liquefaction process system is regarded as primary among all topside systems in LNG FPSO. This liquefaction process system is composed of many types of equipment. LNG equipment on offshore plants has quite different demands on the equipment compared to traditional onshore LNG plants, so the reliability analysis of this process system needs to be performed. This study investigates how DEVS formalism for discrete event simulation can be used to reliability analysis of the liquefaction cycle for LNG FPSO. The reliability analysis method based on DEVS formalism could be better model for reflecting the system configuration than the conventional reliability analysis methods, such as fault tree analysis and event tree analysis.