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Lee, Sun-Og;Choi, Gyung-Ja;Choi, Yong-Ho;Jang, Kyoung-Soo;Park, Dong-Jin;Kim, Chang-Jin;Kim, Jin-Cheol
- Journal of Microbiology and Biotechnology
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- v.18 no.11
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- pp.1741-1746
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- 2008
This study was conducted to select endophytic actinomycetes as biocontrol agents against Chinese cabbage clubroot caused by Plasmodiophora brassicae. A total of 81 endophytic actinomycetes were isolated from surface-sterilized roots of Chinese cabbage that was grown on paddy field and upland soils collected from various locations in Korea. By using 16S ribosomal DNA (rDNA) gene sequencing, they were classified to 8 actinobacterial genera. The genus Microbispora (67%) was most frequently isolated, followed by Streptomyces (12%) and Micromonospora (11%). Three of the 81 isolates, when inoculated in germinated Chinese cabbage seeds and then transplanted to pots, effectively suppressed the occurrence of a post-inoculated strain of P. brassicae in the pots. They showed control values of 58% for strain A004, 33% for strain A011, and 42% for strain A018. Based on cell wall components, morphological characteristics, and phylogenetic analyses, the three antagonistic isolates were identified as Microbispora rosea subsp. rosea (A004 and A011) and Streptomyces olivochromogenes (A018). Further researches on the field efficacy and action modes of the three actinomycetes are in progress.
https://doi.org/10.4014/jmb.0800.108 인용 PDF KSCI

Kim, Won-Kyung;Kang, Min-Woo;Yang, Ji-Woong;Lee, Eun-Suk;Shin, Hong-Gun;Park, Jin-Gyu;Choi, Won-Sik
- Journal of the Korean Society of Industry Convergence
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- v.23 no.6_2
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- pp.1075-1080
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- 2020
The control on temperature and humidity on the cow-house is essential to assure production efficiency and the control on disease of cows. Fog system and screen fence are typical methods to drop the temperature inside of cow-house during the summer season. This study focused on the change in temperature and humidity under the condition of application of those methods. The results indicate that the installation of atomizer and insulation curtain cause decrease in temperature and increase in humidity. However, Using both of methods at the same time doesn't make any additional meaningful effects on temperature and humidity.
https://doi.org/10.21289/KSIC.2020.23.6.1075 인용 PDF KSCI

Jang, Bong-Mun;Ro, Young-Sin;Yoo, Sun-Kook
- Proceedings of the KIEE Conference
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- 2007.04a
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- pp.423-425
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- 2007
In this paper, Medium Access Control(MAC) protocol designed for Wireless Body area Sensor Network(Bio-MAC) is proposed, Because in WBSN, the number of node is limited and each node has different characteristics. Also, reliability in transmitting vital data sensed at each node and periodic transmission should be considered so that general MAC protocol cannot satisfy such requirements of biomedical sensors in WBSN. Bio-MAC aims at optimal MAC protocol in WBSN. For this, Bio-MAC used Pattern -SuperFrame, which modified IEE E 802.15.4-based SuperFrame structurely. Bio-MAC based on TDMA uses Medium Access-priority and Pattern eXchange -Beacon method for dynamic slot allocation by considering critical sensing data or power consumption level of sensor no de etc. Also, because of the least delay time. Bio-MAC is suitable in the periodic transmission of vital signal data. The simulation results demonstrate that a efficient performance in WBSN can be achieved through the proposed Bio-MAC.
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Lee, Hyun-Woo;Choi, Sang-Gon;Hong, Jin-Kwan
- Korean Journal of Air-Conditioning and Refrigeration Engineering
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- v.20 no.4
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- pp.252-259
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- 2008
The purpose of this study is to estimate the movement of microbial contaminant caused by bio-attack using bio-agent such as bacillus anthracis for preventing contaminant diffusion. multizone simulation was carried out in the case of three types of bio-attack scenario in the government building. Simulation results show that severe contaminant diffusion is brought about in all cases of bio-attack scenario in one hour, though pollution boundaries have different mode according to bio-attack scenarios. Simulation results also show that immune building technology such as filter and UVGI technology gives us powerful alternatives to meet the emergent situation caused by unexpected bio-attack.
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