• Korean Journal of Microbiology
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• v.54 no.2
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• pp.98-104
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• 2018

Naegleria fowleri and Acanthamoeba spp. are free-living amoebas that are widely distributed in natural environments. Although uncommon, infection with these protozoans can cause fatal disease in humans and animals. In this study, in order to select the appropriate method to survey Naegleria fowleri and Acanthamoeba spp. in water samples, four molecular biology techniques and one commercially available kit for real-time PCR were compared. The results indicated that the duplex real-time PCR was the most sensitive, and could be used to simultaneously detect two different free-living amoebas. Using the duplex real-time PCR approach, the two free-living amoebas were surveyed in three local streams in Daejeon, Republic of Korea. The concentrated free-living amoebas were inoculated onto non-nutrient agar plates which had been spread with heat-inactivated Escherichia coli and incubated for 5~7 days. After incubation, gDNA was extracted and used as the template for amplification by duplex real-time PCR. Acanthamoeba spp. and N. fowleri was detected from ten (83.3%) and two (16.6%) of the twelve samples, respectively. As these two free-living amoebas can be fatal, continuous surveillance is needed to track their distribution in the aquatic environment for the drinking water safety.

• The Science & Technology
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• no.6 s.409
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• pp.16-16
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• 2003

아벨상 첫 수상자에 장 피에르 세르/ 조지 커존, 온라인 연구비 주선 웹구축/ 논문 도용에 법원이 '파울' 선고/ 빌 게이츠, 지놈사업에 850억원 기증/ 러시아, 지구에너지 대상 3명 수여/ 러시아 과학책임자에 군 출신 임명

• Digital Contents
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• no.7 s.146
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• pp.94-95
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• 2005

지난달 23일부터 이틀 동안 브라질 상파울로에서 국내 온라인게임 업체와 브라질의 관련 기업을 대상으로 1대 1 수출 상담회를 개최했다. 이번 상담회는 현재 온라인 게임 수출이 중국과 동남아권에 치중돼 있는 우리나라 현실을 감안할 때 브라질시장이라는 새로운 수출 돌파구를 열어줄 것으로 기대된다.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2002.11a
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• pp.1-4
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• 2002

철근 콘크리트 건물은 반영구적이다. 하지만, 이런 사항은 시공방법에서 항상 언급되지는 않는다. 철근 콘크리트 건물의 내구성은 콘크리트 시공에 크게 의존한다. 따라서, 다음의 관점에서 철근 콘크리트 시공사 다음 사항을 언급할 수 있다. 1) 시멘트 수화작용과 콘크리트 내구성의 관계 2) 부실 공사 및 콘크리트 내구성 3) 콘크리트의 파울링(fouling) 메커니즘과 그 대책

• Fashion Information and Technology
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• v.8
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• pp.11-18
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• 2011

• Venture DIGEST
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• s.67
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• pp.23-23
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• 2005

브라질 상파울루 국제공항 입국 심사장에는 아직도 미국인들만을 대상으로 한 지문채취와 사진촬영이 실시되고 있다. 초강대국 미국에 맞서 ` ‘맞불’을 놓을 수 있는 배짱을 내보인 것이다. 세계에서 8번째 규모의 인터넷 보급망을 가진 브라질. 폭발적인 성장 가능성과 함께 우리나라 기업들의 발걸음도 빨라졌다.

• Proceedings of the Membrane Society of Korea Conference
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• 2004.11a
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• pp.259-262
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• 2004

• Proceedings of the Korean Society of Marine Engineers Conference
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• 2012.06a
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• pp.238-238
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• 2012

• Proceedings of the SAREK Conference
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• 2004.06a
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• pp.234-234
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• 2004

• Transactions of the Korean Society of Mechanical Engineers B
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• v.27 no.12
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• pp.1772-1780
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• 2003

An optimal soot blowing system has been developed for an optimal operation of power utility boilers by both minimization of the use of steam and the number of soot blowers worked during soot blowing. Traditionally, the soot blowing system has been operated manually by operators. However, it causes the reduction of power and thermal performance degradation because all soot blowers installed in the plant should be worked simultaneously even there are lots of tubes those are not contaminated by slagging or fouling. Heat transfer area is divided into four groups, furnace, convection area including superheater, reheater and economizer, and air preheater in the present study. The condition of cleanness of the tubes is calculated by several parameters obtained by sensors. Then, a part of soot blowers works automatically where boiler tubes are contaminated. This system has been applied in a practical power plant. Therefore, comparison has been done between this system and manual operation and the results are discussed.