• Archives of Pharmacal Research
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• 제21권3호
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• pp.344-347
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• 1998

To overcome multidrug resistance (MDR) in cancer chemotherapy, we prepared various plant extracts and searched for a component which is effective for inhibition of MDR. MDR inhibition activity was determined by measuring cytotoxicity to MDR cells using multidrug resistant human fibrocarcinoma KB V20C, which is resistant to 20 nM vincristine and expresses high level of mdr1 gene. Of various plant extracts, the MeOH extract of the root of Aconitum pseudo-laeve var. erectum was found to have potent inhibitory activity on MDR. The bioassayguided fractionation of the MeOH extract of the plant led to the isolation of an alkaloid, lycaconitine, as an active principle. And the $IC_{50}$ of lycaconitne for KB V20C cells was $74\mu{g}$/ml.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 1995년도 Proceedings of special lectures on Molecular Biological Approaches to Plant Disease National Agricultural Science and Technology Institute Suwon, Korea
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• pp.21-25
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• 1995

;Bacterial blight caused by Xanthomonas oryzae pv. Olyzae is one of the most important diseases of rice. Host resistance, which relies on single, dominant resistance genes, is the only reliable method to control the disease at present. Pathogenic variation of the bacteria has been shown to follow the deployment of resistance genes in commercial cultivars. Information on the factors and the mechanisms for genetic variation of this pathogen is limited. Further, we have no clear evidence of whether population variability is due to sexual recombination or to variation introduced by mutations or intragenic recombination in a clonally maintained population.(omitted)itted)

• Nuclear Engineering and Technology
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• 제48권1호
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• pp.211-217
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• 2016

Most nuclear power plants now utilize solid grounded low voltage systems. For safety and reliability reasons, the low voltage (LV) high resistance grounding (HRG) system is also increasingly used in the pulp and paper, petroleum and chemical, and semiconductor industries. Fault detection is easiest and fastest with a solidly grounded system. However, a solidly grounded system has many limitations such as severe fault damage, poor reliability on essential circuits, and electrical noise caused by the high magnitude of ground fault currents. This paper will briefly address the strengths and weaknesses of LV grounding systems. An example of a low voltage HRG system in the LV system of a nuclear power plant will be presented. The HRG system is highly recommended for LV systems of nuclear power plants if sufficient considerations are provided to prevent nuisance tripping of ground fault relays and to avoid the deterioration of system reliability.

• 한국식물병리학회지
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• 제3권1호
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• pp.3-7
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• 1987

도열병에 대해 감수성을 보이는 낙동과 성체식물저항성을 보이는 도봉의 건전엽과 도열병 감염엽내의 에탄올가용성 아미노산과 페놀화합물을 양적으로 분석하였다. 접종 3일후에는 가용성 아미노산과 페놀화합물의 수준은 건전엽과 비슷하였다. 도열병 병반이 접종 5일 후에 감염엽에 나타났을 때 가용성 아미노산과 페놀화합물은 5엽기와 3엽기에서 증가하기 시작하였고, 접종 7일 후에서는 이들 화합물의 수준은 5엽기와 8엽기에서 건전엽보다 약 $1.5\~3$배 더 많았다. 도열병 감염동안 비록 도봉이 도열병에 대해 낙동보다 덜 감염되었지만 5엽기와 8엽기의 건전엽과 감염엽에서 성체식물저항성 품종 도봉의 가용성 아미노산 및 페놀화합물 함량은 감수성 품종 낙농의 함량보다 높았다. 벼품종 도봉이 도열병에 감염동안 아미노산과 페놀화합물 함량이 현저하게 증가하여 성체식물저항성이 발현하는데 중요한 역할을 할지 모른다.

• 식물병연구
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• 제8권3호
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• pp.131-145
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• 2002

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2004년도 The 2004 KSPP Annual Meeting & International Symposium
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• pp.61-62
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• 2004

See Full Text

• 한국식물병리학회:학술대회논문집
• /
• 한국식물병리학회 2002년도 총회 및 추계학술발표회
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• pp.5-6
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• 2002

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2002년도 총회 및 추계학술발표회
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• pp.7-8
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• 2002

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2002년도 총회 및 추계학술발표회
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• pp.9-9
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• 2002

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2005년도 추계 학술발표회
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• pp.33-34
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• 2005