• 제목/요약/키워드: Lee Joon Gu

검색결과 328건 처리시간 0.037초

Study on Phenol Degradation by Rhodococcus sp. EL-43P

  • Won, Seong-Nae;Lee, Hee-Sook;Kim, Joon-Gu;Lee, Geon;Lee, Sang-Joon
    • 한국동물학회:학술대회논문집
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    • 한국동물학회 1998년도 한국생물과학협회 학술발표대회
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    • pp.171.2-171
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    • 1998

  • No Abstract, See Full Text

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Hybrid simulations for discharge plasma

  • 이현수;김웅;이해준;신영교;이재구
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 1998년도 제16회 학술발표회 논문개요집
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    • pp.132-132
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    • 1998

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Effect of Phytolacca americana Extracts on the Activities of AsPOX and GuPOX during Germination Process of Cassia mimosoides var. nomame

  • Lee, Ho-Joon;Kim, Yong-Ok
    • The Korean Journal of Ecology
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    • 제23권2호
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    • pp.187-192
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    • 2000

  • After Cassia mimosoides var. nomame was treated with Phytolacca americana extracts during the germination process, its effect on the activities of AsPOX and GuPOX were examined. As the concentration of P. americana extract increased. the activity of AsPOX decreased while that of GuPOX increased. During the germination process, the activity of AsPOX was lower than the control, while the activity of GuPOX was over 2 times higher than the control. Activity of total peroxidase by IEF was extremely high at pI 6.4 and pI 6.6 when treatment was made with a 30% concentration of P. americana extract. The treatment with phenolic compounds, caffeic acid and benzoic acid did not show much difference from the control although a slight increase was observed at pI 6.6. Activity of GuPOX in C. mimosoides was over 4 times higher in roots than in shoots. Namely, because GuPOX activity of C. mimosoides was increased by extracts of P. americana, defense enzyme, GuPOX. was generated against external stress, and we could certified the activity increase at pI 6.4, especially in root.

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Memoryless $H_\infty$ Controller for State and Input Delayed Systems

  • Lee, Joon-Hwa;Moon, Young-Soo;Kwon, Wook-Hyun
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1994년도 Proceedings of the Korea Automatic Control Conference, 9th (KACC) ; Taejeon, Korea; 17-20 Oct. 1994
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    • pp.558-560
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    • 1994

  • In this paper, a memoryless H$_{\infty}$ controller for linear systems with state and input delays is presented. The proposed controller is a delay independent stabilizer which reduces the H$_{\infty}$ norm of the closed loop transfer function, from the disturbance to the controlled output, to a precribed level. The controller is obtained by solving a minimization problem involving linear matrix inequalities.s.

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