http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Thiol의 친핵성 첨가물의 합성(제Ⅸ보) (Diacylivinylaryloxy)acetic acid 유도체와 그 Thioglycolic Acid 참가생성물의 합성
한인섭,김태린,허태성,최재희 聖心女子大學校 1989 論文集 Vol.21 No.-
이뇨작용 및 항종양효과가 있으리라고 예상되는 (acetylbenzoylvinyloxy)acetic acid 유도체(3a-3d)와 (dibenzoylvinylaryloxy)acetic acid 유도체 (3e-3h) 및 이들의 thioglycolic acid 첨가생성물(4a-4h)을 합성하였다. (dibenzoylvinylaryloxy)acetic acid 유도체는 hydroxybenzaldehyde 유도체로부터 monochloroacetic acid를 이용하여 2단계 반응으로 합성하였다. (Acetylbenzoylvinyloxy)acetic acid derivatives(3a-3d), (dibenzoylvinylaryloxy) acetic acid dervatives(3e-3h) and their thioglycolic acid adducts(4a-4h) which are expected to have diurectic activities and antitumour effect were synthesized. (Diacylvinylaryloxy)acetic acid derivatives wer prepared from hydoxybenzaldehyde derivatives via two step reaction employing monochloraccetic acid.
Surveillance of Coronavirus Disease 2019 (COVID-19) Testing in Clinical Laboratories in Korea
Huh Hee Jae,Hong Ki Ho,Kim Taek Soo,Song Sang Hoon,Roh Kyoung Ho,Lee Hyukmin,Kwon Gye Cheol 대한진단검사의학회 2021 Annals of Laboratory Medicine Vol.41 No.2
In response to the ongoing coronavirus disease 2019 (COVID-19) pandemic, an online laboratory surveillance system was established to monitor severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) real-time reverse transcription-PCR (rRT-PCR) testing capacities and results. SARS-CoV-2 rRT-PCR testing data were collected from 97 clinical laboratories, including 84 medical institutions and 13 independent clinical laboratories in Korea. We assessed the testing capacities to utilize SARS-CoV-2 rRT-PCR based on surveillance data obtained from February 7th to June 4th, 2020 and evaluated positive result characteristics according to the reagents used and sample types. A total of 1,890,319 SARS-CoV-2 rRT-PCR testing were performed, 2.3% of which were positive. Strong correlations were observed between the envelope (E) gene and RNA-dependent RNA polymerase (RdRp)/nucleocapsid (N) genes threshold cycle (Ct) values for each reagent. No statistically significant differences in gene Ct values were observed between the paired upper and lower respiratory tract samples, except in the N gene for nasopharyngeal swab and sputum samples. Our study showed that clinical laboratories in Korea have rapidly expanded their testing capacities in response to the COVID-19 outbreak, with a peak daily capacity of 34,193 tests. Rapid expansion in testing capacity is a critical component of the national response to the ongoing pandemic
허재선(Jae-Sun Huh),신희상(Hee-Sang Shin),강병욱(Byung-Wook Kang),김재철(Jae-Chul Kim) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.11
Neutral section is the facility connecting separate traction power supply system by using insulating device. But power supplied in to the train is stopped and the train moves in coasting state when passing the neutral section. Consequently, driving speed of train is reduced. Further, if the train kept notch-on state get into the neutral section. AC electric railway system and train are be adversely affected. Automatic power switching system in neutral section is one of the best way to improve these problem. But automatic power switching system in neutral section can be caused serious problem. In this paper, these simulated operating characteristics of automatic power switching device and analyzed effect of regenerative source in the train for transformer inrush current.