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RISS 인기검색어
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Deoxyribonucleoside의 보호와 di-p-Methoxytrityl기의 제거에 대한 Alcohol류의 효과
이상직,송병수,김대연 嶺南大學校附設 基礎科學硏究所 1984 基礎科學硏究 Vol.4 No.-
5'-O-Dimethoxytritylthymidine and N-benzoyl-5'-O-dimethoxytrityldeoxyade-nosine were synthesized from the corresponding deoxynucleosides and some factors influencing their yields were also investigated. To remove the dimethoxytrityl group from 5'-O-Dimethoxytritylthymidine and N-benzoyl-5'-O-dimethoxytrityldeoxyadenosine, ZnBr₂/CH₃NO₂, ZnBr₂/CH₃NO₂in the presence of alcohols, and CH₃COOH/CH₃NO₂systems were employed. The rates of the detritylation as well as the extent of side reaction in these systems were estimated and the effect of alcohols on the reactions was discussed.
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Internucleotide Phosphotriester Bond 형성에 따른 Arylsulfonyl azolide계 축합시약의 반응성
이상직,김대연,송병수 嶺南大學校附設 基礎科學硏究所 1985 基礎科學硏究 Vol.5 No.-
Arylsulfonylimidazoles, arylsulfony-1,2,4-triazoles and arylsulfonyl-3-nitro-1,2,4-triazoles were synthesized and employed in the formation of a phosphotriester bond between appropriately protected monodeoxyribonucleotides. New condensing agents, benzenesulfonyl-3-nitro-1,2,4-triazole, and p-toluenesulfonyl-3-nitro-1,2,4-triazole were found to be excellent in the dideoxyribonucleotide synthesis via the phosphotriester method.
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이기환,오제직,최석남,박병빈,이태호,김영유 공주대학교 사범대학 과학교육연구소 1998 과학교육연구 Vol.29 No.1
p-type α-SiC(4H, 6H, 15R polytype)를 사용하여 다공질 실리콘(porous silicon; PS)의 제작방법과 유사하게 HF/H₂O/C₂H??OH 용액에서 전기화학적으로 에칭을 하여 광발광 특성을 가지는 다공질 실리콘 카바이드(porous silicon carbide; PSC)를 제작하였다. PSC의 다공질의 분포는 전류밀도가 증가할수록 증가하고 다공질의 크기는 감소하였으며 광발광(photoluminescence; PL) 스펙트럼의 분석을 통해 전극 표면에서의 산화반응은 공급되는 전자의 양과 전류밀도에 의존하며 전류밀도가 증가할수록 전극의 산화반응은 억제된다는 결과를 얻었다. Porous silicon carbide(PSC) having photoluminescence(PL) can be prepared by a technique very similar to that used in porous silicon preparation, by electrochemical etching of crystalline p-type α-SiC(4H, 6H, 15R polytype) in ?? solution. The results show that porous distribution increase with increasing of the current densities while pore size decrease with that. Through the PL spectra analysis anodic oxidation of electrode surface was dependent on the amount of provided electrons and the current densities and inhibited with increasing of the current densities.
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The compilation of Inventory of National Biological Resources with 111 Alert Alien Species in Korea
Soen-Yi Kim,Jin-Whoa Yum,Neung-Ho Ahn,Hye-Woo Byun,Mi-Jeong Jeon,Sung-Hee Jung,Hyun-Ki Choi,Youn-Bong Ku,Eun-Joo Woo,Min-Ha Kim,Wonhee Kim,Byung-Jik Kim,Hwa-Jung Kim,Min-Seock Do,Chang-Mu Kim 한국응용곤충학회 2023 한국응용곤충학회 학술대회논문집 Vol.2023 No.04
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