http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Study of 19F Levels with Ex = 6.7 - 7.7 MeV by the 15N+α Scattering Experiment
D. Kim,G. W. Kim,S. Y. Park,A. Kim,한인식,K. Abe,O. Beliuskina,S. Hayakawa,N. Imai,N. Kitamura,Y. Sakaguchi,H. Yamaguchi,S. M. Cha,K. Y. Chae,M. S. Kwag,S. W. Hong,E. J. Lee,J. H. Lee,E. K. Lee,J. Y. Moo 한국물리학회 2018 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.73 No.3
The intense γ-rays from classical novae are emitted due to the β-decay of 18F which is produced by the Hot-CNO cycle. The reaction rate of 18F(p,α)15O affects the prediction of the abundance of 18F. The main contribution to this reaction rate is from the resonances in 19Ne near and above the proton threshold. Hence, many experiments and theoretical works have been performed on the low-lying 18F+p resonances. One of the methods for investigating 19Ne parameters is studying the mirror nucleus 19F. α elastic scattering experiment was performed with a 7 MeV/u 15N beam for investigating the resonance parameters in 19F using the thick target method in inverse kinematics at the radioactive beam facility CRIB of the Center for Nuclear Study, the University of Tokyo. The excitation function of 19F was obtained for the excitation energy Ex = 6.7 - 7.7 MeV, and the parameters of the resonance states in 19F were determined using an R-matrix analysis.
Homopolymer - tail 의 E . coli 형질 전환에 미치는 영향
이현환,공운영,현형환,유무영 한국유전학회 1986 Genes & Genomics Vol.8 No.3
Effect of parameters such as time, temperature and tail-length on the efficiency of tailing and transformation into E. coli strains using pBR322-SV40 DNA chimera formed via d(A)·d(T) or d(G)·d(C) homopolymer tailing were explored. The tail-length optimal for the construction was about 20 and 15 nucleotides in case of d(G) and d(C), respectively. The optimal temperature and time-length for tailing were 37℃ and 35min, respectively. The transformation efficiencies of recA^+ strains were slightly higher than those of recA^- strains when they were transformed with the DNA formed via homopolymer tailing. These facts indicated that some recA proteins may be involved in transformation step in E. coli.