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Seomoon, Dong,Lee, Kooyeon,Kim, Hyunseok,Lee, Phil ,Ho Wiley - VCH Verlag GmbH & Co. KGaA 2007 Chemistry Vol.13 No.18
<P>Inter- and intramolecular palladium-catalyzed allyl cross-coupling reactions using allylindium generated in situ by treatment of allyl acetates with indium and indium trichloride in the presence of Pd<SUP>0</SUP> catalyst and nBuNMe<SUB>2</SUB> in DMF were successfully demonstrated. Allylindium species generated in situ by reductive transmetalation of π-allylpalladium(II) complexes, obtained from a variety of allyl acetates in the presence of Pd<SUP>0</SUP> catalyst together with indium and indium trichloride, were found to be capable of acting as effective nucleophilic coupling partners in Pd-catalyzed cross-coupling reactions. A variety of allyl acetates such as but-1-en-3-yl acetate, crotyl acetate, and 2-methylallyl acetate afforded the corresponding allylic compounds in good yields in cross-coupling reactions. Various electrophilic cross-coupling partners such as aryl iodides and vinyl bromides and triflates participate in these reactions. Not only intermolecular but also intramolecular Pd-catalyzed cross-coupling reactions work equally well to produce the desired allylic coupling products in good yields.</P> <B>Graphic Abstract</B> <P>Inter- and intramolecular cross-coupling reactions work equally well: Allylindium species generated in situ by reductive transmetalation of π-allylpalladium(II) complexes, obtained from a variety of allyl acetates in the presence of a Pd<SUP>0</SUP> catalyst together with indium and indium trichloride, were found to be capable of acting as effective nucleophilic coupling partners in intermolecular and intramolecular Pd-catalyzed cross-coupling reactions. <img src='wiley_img/09476539-2007-13-18-CHEM200601338-content.gif' alt='wiley_img/09476539-2007-13-18-CHEM200601338-content'> </P>
K-SDM (Korean Species Distribution Model), platform design for the forest invasive insect pests
Yun Seomoon,Sang-Yoon Kim,Daihn An,Ji-Young Lee,Jun-Min Seo,Jae-In Oh,June-Hyeok Jeong,Young-Seuk Park,Yang-Seop Bae,Seunghwan Lee,Jong Kyun Park,Bong-Kyu Byun 한국응용곤충학회 2023 한국응용곤충학회 학술대회논문집 Vol.2023 No.04
디지털교과서를 활용하는 초등학생의 VDT증후군 자각증상과 관련요인
서문경애(Seomoon, Gyeong-Ae),김은영(Kim, Eun-Young) 한국간호교육학회 2012 한국간호교육학회지 Vol.18 No.1
Purpose: The purpose of this study was to determine the factors associated with video display terminal (VDT) syndrome in students who use digital textbooks. Methods: A descriptive survey design was used, and 515 students were selected in 6 out of 20 designated as digital textbook research schools by the Ministry of Education, Science and Technology (MEST). Results: The subjective symptoms of VDT and their degree of severity in participants were similar to those in general students. Approximately 12.5% of the participants were classified as a potential risk group for VDT syndrome. In the potential risk group, the mean of the subjective symptoms of VDT was above normal (2.53 ± 0.52). Related factors were identified using logistic regression analysis and included being female (odds ratio [OR]= 2.57, p=.002), communication time with family (<30 min) (OR=2.70, p=.006),moderate satisfaction with school life (OR=2.57, p=.003),and dissatisfaction with school life (OR=14.92, p<.001). Conclusion: In order to prevent the occurrence of VDT syndrome in students, it is necessary to urgently establish a preventative program and monitor the use of digital textbooks.
C<sub>2</sub>H<sub>2</sub> ( /C<sub>2</sub>H ) As the Growth Species of Thermal CVD Diamond System
서문규 ( Seomoon Kyu ),이재신 ( Lee Jae Shin ),이지화 ( Lee Jee Hwa ) 한국공업화학회 1991 한국공업화학회 연구논문 초록집 Vol.1991 No.0
최근에 기상반응을 이용한 저압 다이아몬드 합성에 관한 연구가 활발히 수행되고 있으나 아직 활성종이 무엇인지에 대한 정확한 규명이 이루어지지않고 있다. 이는 기상반응 기구에 대한 정확한 실험이 이루어지지 못한 때문이기도 하다. 따라서 본 실험에서는 세라믹 probe로 질량분석기에 연결하여 실험조건에서의 기상분석을 통하여 활성종이 무엇인가에 대한 연구를 in situ로 진행하였다. 안정한 화합물인 CH<sub>4</sub>와 C<sub>2</sub>H<sub>2</sub>의 압력에 대한 변화량과 이에대한 성장속도를 비교 하였고 SEM, XRD, RAMAN등을 이용한 분석결과도 이용하였다. 나타난 성장속도와 열평형 계산에 의한 결과를 비교하여 볼 때, 활성종으로서 C<sub>2</sub>H<sub>2</sub>가 제시되었는데 이는 질량분석기를 이용한 결과와도 잘 일치한다.