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Kim, Tae-Su;Kim, Jin-Sook;Park, Chun-Geon;Park, So-I;Ju, Young-Woon;Kang, Myung-Hwa
- Korean Journal of Medicinal Crop Science
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- v.18 no.3
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- pp.201-207
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- 2010
This study was carried out to obtain the information on the antioxidant activity of Phyllanthus. We compared and analyzed three indigenous collections of Phyllanthus: species from Korea, Brazil and Paraguay. Total phenolic acid contents were $1.93{\pm}0.015$ mg/mL in KCS (Korean Collection Species), $1.65{\pm}0.003$ mg/mL in PCS (Paraguay Collection Species) and $1.49{\pm}0.003$ mg/mL in BCS(Brazil Collection Species). In both DPPH radical scavenging activities and SOD-liked activities, KCS was the highest ($67.25{\pm}0.03%,\;78.38{\pm}1.17%$). KCS were also the highest in hydroxyl radical scavenging activities ($95.80{\pm}0.17%$). It turned out that there was no meaningful difference between BCS ($81.64{\pm}0.23%$) and PCS ($81.54{\pm}0.04%$). As for hydrogen radical scavenging activities, there was no statistically meaningful difference between KCS ($36.44{\pm}0.24%$) and BCS ($36.31{\pm}0.33%$) and it was the lowest in PCS ($33.72{\pm}0.15%$). Our results showed that KCS excelled the others not only in antioxidant activity but also in other beneficial effects. This encouraging results may be potentially useful in developing Phyllanthus urinaria L. variety which contains lots of functional elements such as total phenolic acid.
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Yun, Kunhang;Kim, Dong Jin;Yeon, SeongMo;Kim, Yoo-Chul;Kim, Yeon Gyu;Yang, Kyung-Kyu
- Journal of the Society of Naval Architects of Korea
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- v.59 no.5
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- pp.262-270
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- 2022
The emergence of new concept ships, such as autonomous ships, has drawn much attention on the manoeuvrability of ships because of the safe navigation and operation of ships. Although the manoeuvrability of KRISO Container Ship(KCS) has been frequently reported, there have been few documents of representative manoeuvre cases conducted in various methods by one institute. This paper presents the manoeuvrability of the ship in 1/42.0 model scale by 3 methods: free running model tests, horizontal planar motion mechanism tests, and computational fluid dynamics analysis. KRISO reports KCS manoeuvre data: 35° turning circle tests and 20/20(10/10) zigzag manoeuvring tests. In addition, a simple formula for integrating and comparing manoeuvre indices, Manoeuvrability Comparing Simple Index(MCSI), is proposed.
https://doi.org/10.3744/SNAK.2022.59.5.262 인용 PDF KSCI

Shin, Hyun-Seok;Kim, Eun-Tai;Park, Mignon
- Journal of the Korean Institute of Intelligent Systems
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- v.12 no.6
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- pp.559-564
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- 2002
This Paper Proposes a design method of a fuzzy output feedback controller for the nonlinear systems with the unknown time- delay. Recently, Cao et ai. proposed a stabilization method for the nonlinear time-delay systems using a fuzzy controller when the time-delay is known. However, the time-delay is likely to be unknown in practical. We represent the nonlinear systems with the unknown time-delay by Takagi-Sugeno (T-5) fuzzy model and design the fuzzy observer and the parallel distributed compensation (PDC) law based on this observer. By applying Lyapunov-Krasovskii theorem to the closed-loop system, the sufficient condition for the asymptotic stability of the equilibrium Point is derived and converted into the linear matrix inequality (LMI) Problem.
https://doi.org/10.5391/JKIIS.2002.12.6.559 인용 PDF KSCI

이충호;정성목;김완희;박성민;남치주;권오경
- Journal of Veterinary Clinics
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- v.19 no.2
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- pp.260-263
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- 2002
Twenty-nine dogs with chronic keratoconjunctivitis sicca (KCS) were treated by topical administration of a petrolatum based 2% cyclosporine ointment twice daily. Causes and durations of KCS varied. Tear production increased in 25 of 32 eyes and clinical improvement in corneal health was noticed in 35 of 47 eyes. No serious adverse reactions were observed and only mild irritation was noticed by the owners immediately after the application of the ointment in some cases .
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