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Nah, Ja-Kyoung,Chae, Jong-Chul,Park, Young-Deuk,Park, Hyung-Min,Jang, Bi-Ho,Ahn, Kwang-Su,Yang, Hee-Su,Cho, Kyung-Suk,Kim, Yeon-Han,Kim, Kwang-Dong,Cao, Wenda,Gorceix, Nicolas,Goode, Philip. R. 한국천문학회 2011 天文學論叢 Vol.26 No.1
KASI and Seoul National University developed the Fast Imaging Solar Spectrograph (FISS) as one of major scientific instruments for the 1.6 m New Solar Telescope (NST) and installed it in the Coude room of the NST at Big Bear Solar Observatory (BBSO) in May, 2010. The major objective of the FISS is to study the fine-scale structures and dynamics of plasma in the photosphere and chromosphere. To achieve it, the FISS is required to take data with a spectral resolution higher than $10^5$ at the spectrograph mode and a temporal resolution less than 10 seconds at the imaging mode. The FISS is a spectrograph using Echelle grating and has characteristics that can observe dual bands (H${\alpha}$ and CaII 8542) simultaneously and perform fast imaging using fast raster scan and two fast CCD cameras. In this paper, we introduce briefly the whole process of FISS development from the requirement analysis to the first observations.
몽골에서 최초로 분리된 뉴캣슬병 바이러스의 분자생물학적 특성
최강석(Kang-Seuk Choi),이은경(Eun-Kyoung Lee),전우진(Woo-Jin Jeon),D. Batchuulon,R. Sodnomdarjaa,박미자(Mi-Ja Park),유예나(Ye-Nah Yoo),권준헌(Jun-Hun Kwon) 韓國家禽學會 2011 韓國家禽學會誌 Vol.38 No.2
몽골 산란계 농장에서 발생한 뉴캣슬병 사례로부터 뉴캣슬병 바이러스를 분리하고 그 특성을 조사하였다. 그 결과, 발생 농장 산란계 폐사계의 뇌 및 폐 조직으로부터 뉴캣슬병 바이러스 MN1/10 주가 분리되었다. 이 바이러스는 F 단백질 분절 부위가 특징적인 병원성 motif(RRQKRF)를 가지고 있었으며 종란 평균 치사 지수(MDT)가 54.7시간으로 강독형 NDV이었다. 또한 발생 농장 내 생존하고 있는 산란계에서 고역가의 NDV 특이항체가 검출되었다. 유적학적 계통 분석을 실시한 결과, 몽골 분리주는 ClassⅡ에 속하는 genotype Ⅶd 바이러스로 확인되었다. 유전학적 계통 분석 결과, 몽골 분리주는 몽골과 인접한 중국에서 유행하는 바이러스그룹(CN2)에 속하는 것으로 분류되었다. 우리의 연구 결과는 몽골에서의 뉴캣슬병 최초 발생은 동북아시아 지역에서 유행하는 강독형 NDV의 유입에 의해서 이루어졌음을 말해준다. The outbreak of Newcastle disease occurred for the first time at a commercial chicken farm near Ulaanbaatar, Mongolia in August 2010. Newcastle disease virus (NDV) obtained from infected chickens in Mongolia was characterized by biological and molecular biological approches. Mongolian NDV isolate killed all of chicken embryos within 60 h in the mean death time assay, indicating virulent for chicken. A genomic region of 695 nts between nts 1055 of the M gene and 508 of the F gene was amplified by RT-PCR and sequenced. The deduced amino acid sequence of the F protein cleavage site was ¹¹²RRQKRF¹¹?, which is a typical sequence of velogenic strains of NDV and is agreement with the result of the MDT assay. The sequence of the partial F gene (nts 47 to 435) was used for genotyping by phylogenetic analysis. The phylogenetic analysis showed that the Mongolian isolate was of genotype Ⅶ within classⅡ of NDV. Further phylogenetic analysis on the genotype Ⅶ strains revealed that the isolates placed in a genetic sublineage of Ⅶd and most closely related with velogenic strains of NDV circulating in Far-east Asian region especially China, suggesting the introduction of velogenic NDV into Mongolia from neighboring countries.
The Design Concept of the First Mobile Satellite Laser Ranging System (ARGO-M) in Korea
Jo, Jung-Hyun,Park, In-Kwan,Lim, Hyung-Chul,Seo, Yoon-Kyoung,Yim, Hong-Seo,Lee, Jin-Young,Bang, Seung-Cheol,Nah, Ja-Kyoung,Kim, Kwang-Dong,Jang, Jeong-Gyun,Jang, Bi-Ho,Park, Jang-Hyun,Park, Jong-Uk The Korean Space Science Society 2011 Journal of Astronomy and Space Sciences Vol.28 No.1
Korea Astronomy and Space Science Institute (KASI) launched the development project of two satellite laser ranging (SLR) systems in early 2008 after the government fund approval of the SLR systems in 2007. One mobile SLR system and one permanent SLR station will be developed with the completion of the project. The main objectives of these systems will be focused on the Space Geodetic researches. A system requirement review was held in the second half of the same year. Through the following system design review meeting and other design reviews, many unsolved technical and engineering issues would be discussed and resolved. However, the design of the mobile SLR system is a corner stone of whole project. The noticeable characteristics of Korea's first SLR system are 1) use of light weight main mirror, 2) design of compact optical assembly, 3) use of KHz laser pulse, 4) use of commercial laser generator, 5) remote operation capability, 6) automatic tracking, 7) state of art operation system, etc. In this paper, the major user requirement and pre-defined specification are presented and discussed.
Study on the Optoelectronic Design for Korean Mobile Satellite Laser Ranging System
Lim, Hyung-Chul,Bang, Seong-Cheol,Yu, Sung-Yeol,Seo, Yoon-Kyung,Park, Eun-Seo,Kim, Kwang-Dong,Nah, Ja-Kyoung,Jang, Jeong-Gyun,Jang, Bi-Ho,Park, Jang-Hyun,Park, Jong-Uk 한국우주과학회 2011 Journal of Astronomy and Space Sciences Vol.28 No.2