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서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)
김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1
In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.
Hung Sun Koh, Kyung Hee Jang, Eui Dong Han, Jae Eun Jo, Seon Ki Jeong, Eui Jeong Ham, Seong Taek In, Jong Hyek Lee, Gu Hee Kweon, Kwang Seon Kim 충북대학교 동물의학연구소 2012 Journal of Biomedical and Translational Research Vol.13 No.2
To identify subspecies and stocks of minke whale meats purchased from Korean markets during 2005-2007, we first obtained their complete sequences of mitochondrial DNA cytochrome b and control region sequences, and compared these sequences to the corresponding sequences of the common minke whale (Balaenoptera acutorostrata), obtained from GenBank. From analyses with partial cytochrome b sequences (383 bp) and non-coding, partial control region sequences (463 bp), Korean mink whale meats are identified as products from the North Pacific minke whale (B. a. scammoni). In addition, the sequences of the partial control region from these meats showed G at site no. 298 and G or A at site no. 463, and the meats appeared to originate from the J stock within this subspecies. Thus, because the J stock has been protected since 1986, implementation of strict regulation measures to reduce their accidental fisheries by catch seems urgent. In addition, B. a. scammoni is distinct from B. a. acutorostrata, with an average Jukes-Cantor distance of 2.21% in the complete control region sequence analysis (935 bp) and 1.31% in the complete cytochrome b gene sequence analysis; the current results support the current subspecies classification, although further sequencing analyses with nuclear genes are necessary.
분리된 예약채널을 기반으로 하는 요구할당 다중접근방법에 관한 연구
한정항(Jeong-Hang Han),김용환(Yong-Whan Kim),송주석(Joo-Seok Song) 한국정보과학회 1991 한국정보과학회 학술발표논문집 Vol.18 No.2
본 연구에서는 넓은 지역에 분산된 지상망들을 위성체를 통해 상호 연결하여 형성되는 SWAN(Satellite Wide Area Network) 근간망(Backbone Network)으로서의 패킷위성망에서 위성채널에 대한 요구할당 다중접근방식을 설계한다. 본 연구에서는 전송프레임에 대한 예약과 데이타전송이 순차적으로 반복되는 기존의 다중접근방식에서의 채널효율 저하와 지연특성 불안정성을 개선하기 위해 위성채널 구조에서 예약 채널과 데이타전송 채널을 논리적으로 분리하여 서로 독립적으로 운영되도록 구성하고, 그 위에서 요구할당 다중접근 알고리즘을 설계했다. 이것은 예약과 데이타 전송을 각각 서로에 대해 독립적으로 수행하게 하고, 데이타전송 채널에서의 프레임 구조를 제거하여 예약을 슬롯단위로 수행함으로써 일정한 수준의-즉 예약 채널 용량-고정적인 대역폭 낭비를 감수하면서 데이타 전송 채널의 효율을 극대화시키고, 각 지구국에서의 트래픽 변동을 보다 효과적으로 수용하며, 안정된 전송지연 특성과 공평성을 획득함으로써 시스템의 전체적인 성능을 향상시키는데 목적이 있다.
Jeong Myeong Kim,An-Sung Roh,Seung-Chul Choi,Eun-Jeong Kim,Moon-Tae Choi,Byung-Koo Ahn,Sun-Kuk Kim,Young-Han Lee,Jae-Ho Joa,Seong-Soo Kang,Shin Ae Lee,Jae-Hyung Ahn,Jaekyeong Song,Hang-Yeon Weon 한국미생물학회 2016 The journal of microbiology Vol.54 No.12
Soil microorganisms play an essential role in soil ecosystem processes such as organic matter decomposition, nutrient cycling, and plant nutrient availability. The land use for greenhouse cultivation has been increasing continuously, which involves an intensive input of agricultural materials to enhance productivity; however, relatively little is known about bacterial communities in greenhouse soils. To assess the effects of environmental factors on the soil bacterial diversity and community composition, a total of 187 greenhouse soil samples collected across Korea were subjected to bacterial 16S rRNA gene pyrosequencing analysis. A total of 11,865 operational taxonomic units at a 97% similarity cutoff level were detected from 847,560 sequences. Among nine soil factors evaluated; pH, electrical conductivity (EC), exchangeable cations (Ca2+, Mg2+, Na+, and K+), available P2O5, organic matter, and NO3-N, soil pH was most strongly correlated with bacterial richness (polynomial regression, pH: R2 = 0.1683, P < 0.001) and diversity (pH: R2 = 0.1765, P < 0.001). Community dissimilarities (Bray-Curtis distance) were positively correlated with Euclidean distance for pH and EC (Mantel test, pH: r = 0.2672, P < 0.001; EC: r = 0.1473, P < 0.001). Among dominant phyla (> 1%), the relative abundances of Proteobacteria, Gemmatimonadetes, Acidobacteria, Bacteroidetes, Chloroflexi, and Planctomycetes were also more strongly correlated with pH and EC values, compared with other soil cation contents, such as Ca2+, Mg2+, Na+, and K+. Our results suggest that, despite the heterogeneity of various environmental variables, the bacterial communities of the intensively cultivated greenhouse soils were particularly influenced by soil pH and EC. These findings therefore shed light on the soil microbial ecology of greenhouse cultivation, which should be helpful for devising effective management strategies to enhance soil microbial diversity and improving crop productivity.