http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
광주지역 영산강 내 식물플랑크톤의 계절적 변동과 남조류 독소합성유전자의 계통발생학적 특성
김하람,조광운,손경록,장동,서광엽,김연희,Haram Kim,Gwangwoon Cho,Gyeongrok Son,Dong, Jang,Gwangyeob Seo,Yunhee Kim 한국환경과학회 2023 한국환경과학회지 Vol.32 No.5
Cyanobacteria have been used as pollution indicator species in freshwater ecosystems, and identifying their fluctuations can be an important part about management of surface waters globally. Cyanotoxins produced by cyanobacteria are directly or indirectly a threat to human and environmental health. In order to confirm the potential risk of these cyanotoxins, the fluctuations of phytoplankton and phylogenetic analysis of cyanotoxin synthetase genes were conducted at each point in the Yeongsan River water system in Gwangju from November 2021 to October 2022. Diatoms which grow well in winter were dominant at 99.4 ~ 99.5%, and diatoms and green algae were dominant from the spring to autumn when the water temperature rises. Stephanodiscus spp. were dominant at 92.7 to 97.5 % at all sites in the winter, and Aulacoseira spp., which grow in warm water temperatures, were dominant in summer and autumn. Microcystis aeruginosa was dominant at 25.2% in summer only at site 5. mcyB and anaC have been detected as cyanotoxin synthetase genes. The phylogenetic tree of anaC could be divided into two groups (Group 1 & Group 2). Group 1 contained Aphanizomenon sp. and Cuspidothrix issatschenkoi. It is combined with Aphanizomenon sp. and Cuspidothrix issatschenkoi, which are known to produce cyanotoxins.
광주지역 송암산단 환경 대기 중 VOCs 농도 분포와 배출원 추정
황호연 ( Hoyeon Hwang ),박옥현 ( Ok-hyun Park ),장정원 ( Jeong-won Jang ),양윤철 ( Yoon-cheol Yang ),김민진 ( Min-jin Kim ),강창후 ( Changhu Kang ),정희윤 ( Hee-yun Jung ),서광엽 ( Gwang-yeob Seo ),김연희 ( Yunhee Kim ) 한국환경기술학회 2024 한국환경기술학회지 Vol.25 No.2
This study investigated the concentration of Volatile Organic Compounds (VOCs) and identify the impact of associated meteorological factors in Songam Industrial Complex in Gwangju. Accordingly, we performed a factor analysis to estimate the source of VOCs emissions. Findings included a high level of toluene, acetone, butyl acetate, etc. within the Songam industrial complex, the atmospheric conditions near the proximity of the industrial complex and residential areas manifested a resembling trend. The atmosphere of the nearby environment is thought to be affected by VOCs emitted from the industrial complex. The weather factor analysis demonstrated that the distribution of the VOCs concentration affects the velocity of winds. Upon completion of the factor analysis in the industrial complex, the VOCs emissions in the industrial complex were induced by four factors, of which primary factors indicate painting facilities and exhaust gas of diesel vehicles. The factors of VOCs emissions in residential areas showed five, including the painting facilities and exhaust gas from diesel vehicles as primary factors, which is congruent with the factors in the industrial complex.