http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 박현후 (검색결과 5 건)
- 무료
- 기관 내 무료
- 유료
-
고추탄저병균 Colletotrichum scovillei에 대한 Burkholderia cepacia KF1의 길항 활성 검정
박현후,김희영,박병성,부등,김경수 경상대학교 농업생명과학연구원 2019 농업생명과학연구 Vol.53 No.4
고추는 전 세계적으로 중요한 경제작물이다. 하지만, 매년 Colletotrichum species에 의해 발생하는 고추탄저병에 의해 상품성이 떨어지고 수량이 현저히 감소하여 많은 농가에 중대한 피해를 주는 주요 병해이기 때문에 방제대책이 절실히 요구되고 있다. 본 연구에서는 국내에 최근 발생한 C. scovillei에 대해 Burkholderia cepacia를 이용하여 길항 능력을 확인하였다. 16S rRNA와 recA 유전자 분석을 통해 분리된 균주가 B. cepacia임을 확인하였고, 식물 생장 촉진 물질인 siderophore와 항진균 가수분해 효소인 protease, cellulase 생산을 기내 실험을 통해 확인하였다. 또한, C. scovillei에 대한 KF1의 균사 생장 억제율은 66.0%로 나타났으며, 1×105, 106, 107, 108 cfu/mL의 길항 미생물 처리 농도에 따른 포자 발아율은 각각 7.8%, 4.3%, 1.2%, 0%로 확인되어 분리된 길항 미생물은 효과적으로 병원균의 균사 생장 및 포자 발아를 억제하였다. 따라서 본 연구는 길항 미생물 B. cepacia KF1의 고추탄저병균에 대한 생물학적 방제제 자원으로서의 활용가능성을 제시하였다. Pepper (Capsicum annuumm L.) is an economically important crop in the world. However, pepper anthracnose caused by Colletotrichum species is a major limiting factor not only in pepper production, but also for marketability. In this study, in order to find a biological control agent for pepper anthracnose caused by C. scoviilei, we confirmed antagonistic activities of Burkholderia cepacia KF1 that was isolated from Cheonma mountain. The KF1 strain was identified based on 16S rRNA and recA genome sequence analysis. The mycelial inhibition rate of KF1 was 66.0% against C. scovillei, and the germination rates of C. scovillei by treatment 1×105, 106, 107, 108 cfu/mL each concentration were 7.8%, 4.3%, 1.2%, and 0%, respectively. We also confirmed that KF1 was effective in inhibiting the mycelial growth and conidial germination of C. scovillei, and produced plant growth promotion rhizobacteria, antibiotics and cell wall degrading enzymes in vitro. Our study supports that B. cepacia KF1 could be used as a potential biological control agent against pepper anthracnose disease.
-
조혜정,진호,박현후,김관혁,장윤호,조우현,Jo, Hye Jeong,Jin, Ho,Park, Hyeonhu,Kim, Khan-Hyuk,Jang, Yunho,Jo, Woohyun 한국우주과학회 2022 우주기술과 응용 Vol.2 No.1
CubeSat is a satellite platform that is widely used not only for earth observation but also for space exploration. CubeSat is also used in magnetic field investigation missions to observe space physics phenomena with various shape configurations of magnetometer instrument unit. In case of magnetic field measurement, the magnetometer instrument should be far away from the satellite body to minimize the magnetic disturbances from satellites. But the accommodation setting of the magnetometer instrument is limited due to the volume constraint of small satellites like a CubeSat. In this paper, we investigated that the magnetic field interference generated by the cube satellite was analyzed how much it can affect the reliability of magnetic field measurement. For this analysis, we used a reaction wheel and Torque rods which have relatively high-power consumption as major noise sources. The magnetic dipole moment of these parts was derived by the data sheet of the manufacturer. We have been confirmed that the effect of the residual moment of the magnetic torque located in the middle of the 3U cube satellite can reach 36,000 nT from the outermost end of the body of the CubeSat in a space without an external magnetic field. In the case of accurate magnetic field measurements of less than 1 nT, we found that the magnetometer should be at least 0.6 m away from the CubeSat body. We expect that this analysis method will be an important role of a magnetic cleanliness analysis when designing a CubeSat to carry out a magnetic field measurement.
-
Korea Pathfinder Lunar Orbiter Magnetometer Instrument and Initial Data Processing
Wooin Jo,Ho Jin,박현후,장윤호,이성환,김관혁,Ian Garrick-Bethell,신재혁,Seul-Min Baek,Junhyun Lee,손대락,김은혁 한국우주과학회 2023 Journal of Astronomy and Space Sciences Vol.40 No.4
The Korea Pathfinder Lunar Orbiter (KPLO), the first South Korea lunar exploration probe, successfully arrived at the Moon on December, 2022 (UTC), following a 4.5-month ballistic lunar transfer (BLT) trajectory. Since the launch (4 August, 2022), the KPLO magnetometer (KMAG) has carried out various observations during the trans-lunar cruise phase and a 100 km altitude lunar polar orbit. KMAG consists of three fluxgate magnetometers capable of measuring magnetic fields within a ± 1,000 nT range with a resolution of 0.2 nT. The sampling rate is 10 Hz. During the originally planned lifetime of one year, KMAG has been operating successfully while performing observations of lunar crustal magnetic fields, magnetic fields induced in the lunar interior, and various solar wind events. The calibration and offset processes were performed during the TLC phase. In addition, reliabilities of the KMAG lunar magnetic field observations have been verified by comparing them with the surface vector mapping (SVM) data. If the KPLO’s mission orbit during the extended mission phase is close enough to the lunar surface, KMAG will contribute to updating the lunar surface magnetic field map and will provide insights into the lunar interior structure and lunar space environment.
-
아스파라거스 주요 식물병원성 진균에 대한 식물추출물의 항진균 효과
김경수 ( Kim,K. S. ),박현후 ( H. H. Park ),박병성 ( B. S. Park ),김희영 ( H. Y. Kim ),한준희 ( J. H. Han ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2019 강원 농업생명환경연구 Vol.31 No.2
Ten plant extracts were used to select effective organic components against four major asparagus fungal diseases caused by Poitrasia circinans, Botrytis cinerea, Fusarium oxysporum, and Stemphylium vesicarium. Primary screening results using the disk diffusion method revealed antifungal effects of the extracts of cloves, mixed extracts of coptis chinesis and rhubarb, and grapefruit seed, bower actinidia, and purple coneflower. The extracts of cloves and grapefruit + Dahlia + chrysanthemum showed about 79.4% and 78.2% inhibition P. circinans growth at low concentrations of 500 ppm, respectively. Clove extracts were the most effective against B. cinerea and F. oxysporum at 500 ppm, with 86.2% and 59.7% reduction in growth, respectively. S. vesicarium was found to be effectively inhibited by about 80% at 500 ppm by all the four plant extracts. The grapefruit seed + bower actinidia + purple coneflower extract reduced P. circinans conidiation by 89.0% at 500 ppm. Clove extract showed an excellent reduction in F. oxysporum conidiation by 94.3% at 500 ppm. These results provide basic data for biologically controlling major fungal diseases of asparagus using plant extracts.
-
KCI
코리아스칼라연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
