http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
플라즈마기술을 적용한 메탄-이산화탄소 가스개질기술 현황
오승천(Seung-Chun Oh),류재홍(Jae-Hong Ryu),신중욱(Jung-Uk Shin),강석환(Suk-Hwan Kang),김진호(Jin-Ho Kim),김효식(Hyo-Sik Kim),정기진(Ki-Jin Jeong),홍용철(Yong-Cheol Hong) 한국에너지기후변화학회 2014 에너지기후변화학회지 Vol.9 No.2
Plasma technology is considered to be one of potential ways for CH₄-CO₂ reforming. In this paper, plasma technology for CH₄-CO₂ reforming is overviewed. Cold plasma and thermal plasma technologies for CH₄-CO₂ reforming presented with evaluation for their performances. Electron density, plasma temperature and reactor configurations are key factors to improve treatment capacity and energy efficiency of plasma reforming technologies. For industrial application of plasma reforming technology, scale-up of plasma reactor was important with three factors (Electron density, plasma temperature and reactor configurations), and connection with catalysts should be developed continuously in future work.
Dispersive Solid Phase Extraction을 사용한 우유 내 잔류농약 다성분 동시 분석법 비교연구
오남수 ( Nam Su Oh ),신용국 ( Yong Kook Shin ),이지영 ( Ji Young Lee ),백승천 ( Seung Chun Baick ) 한국유가공기술과학회 2015 Journal of Dairy Science and Biotechnology (JMSB) Vol.33 No.1
본 연구에서는 dispersive-SPE를 사용하여 간편하고, 신속하며, 경제적인 우유 내 19종 잔류농약의 동시 다성분 분석법을 설정하고자 하였다. Liquid-liquid partitioning method와 low-temperature cleanup method를 적용한 추출방법과 PSA 및 PSA + C18의 sorbent가 사용된 dispersive-SPE를 사용한 정제방법을 비교 실험하였으며, GC/MS의 선택이온검색법(selected ion monitoring, SIM)으로 정량 분석하였다. matrix-matched standards와 matrix-free standards를 사용하여 분석방법의 matrix enhancement effect를 확인하였고, 분석방법 설정을 위한 비교실험의 결과, low-temperature cleanup방법으로 추출하여 dispersive-SPE(PSA + C18)로 정제하는방법이 시료 추출물의 간섭물질을 제거하는데 가장 효과적이고, 첨가한 1 μg/mL에 대한 개별 농약 성분의 회수율 또한 전체적으로 가장 높은 수준을 나타내었으며, 모든 농약성분의 RSD(%)가 20% 이하로서 기준에 적합한 재현성을 나타내었다. The aim of this study was to optimize a simple, fast, and economic analytical method for the simultaneous determination of various pesticides (aldrin, p,p’-DDT, o,p’-DDT, p,p’-DDE, α-endosulfan, β-endosulfan, dieldrin, heptachlor, permethrin, chlordane, deltamethrin, diazinon, bifenthrin, methoprene, propargite, fenpropathrin, cypermethrin, fenvalerate, and fenpropathrin) in milk by using dispersive solid phase extraction (SPE). In this study, two different extraction methods (low temperature cleanup and liquid-liquid partitioning), which were followed by a cleanup process based on dispersive-SPE, were evaluated and compared for the 19 pesticides. The results for all the pesticides were determined by gas chromatography mass spectrometry (GC/MS) with selected-ion monitoring mode, and the matrix effect of the method was evaluated. Comparison of these approaches yielded higher and more consistent recoveries of most pesticides at fortification levels of 1 μg/mL using low-temperature fat precipitation, followed by cleanup process based on dispersive-SPE with PSA and C18 as sorbents, than other preparation process. The relative standard deviation was <20 % and the combination of this method were very effective for the cleanup.
석탄화력 발전용 초임계 CO₂ 브레이튼 사이클 기술 동향
임동렬(Dong-Ryul Rhim),박성호(Sung-Ho Park),윤문규(Munkyu Yoon),송한얼(Haneol Song),오승천(Seung-Chun Oh),신중욱(Jung-Uk Shin) 한국에너지기후변화학회 2017 에너지기후변화학회지 Vol.12 No.1
The supercritical CO₂(sCO₂) generation system has recently been gaining a lot of attention for application to coal power plants. The advantages of sCO₂ generation system are high efficiency, environment-friendly, and small size compared to steam generation system of conventional power plants. Therefore, the sCO₂ generation system will be applied to coal power plant as alternate methods in the near future. In this paper, study of the principles and characteristics for the sCO₂ generation system with coal power plant and the current development of the sCO₂ generation will be introduced.