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육질이 우수한 한우의 난소에서 회수한 난포란의 체외 발생 능력
설현석,정연길,송해범 韓國受精卵移植學會 2006 한국동물생명공학회지 Vol.21 No.3
본 연구는 고급육을 생산한 한우의 유전자를 재활용하기 위해 기초 등록우와 혈통 등록우의 육질등급이 1 등급 이상인 암소의 난소에서 개체별로 채취한 난포란을 개체별로 각각 체외 성숙, 체외 수정 및 체외 배양하였다. 그 결과를 요약하면 다음과 같다. 기초 등록우의 육질 등급별로 회수된 난포란은 각각 1 등급 평균 28.9개, 등급 평균 28.8개, 등급 29.6개로 평균 29.0개였다. 기초 등록우의 육질 등급별 배반포배 형성율은 각각 1 등급 27.2% These studies were conducted to monitor developmental competence of follicular oocytes collected from the carcass of the high meat quality in Korean native cattle using each individual protocol of IVM, IVF and IVC. The follicular oocytes that were collected from the ovaries of the cow yielded 1, meat quality were matured, fertilized and cultured using each individual protocol of IVM, IVF and IVC. As results, the number of follicular oocytes collected from individual fundamentally-registered cows yielded 1, meat grade were 28.9, 28.8 and 29.6 per head, respectively. The rates of blastocyst formation after IVM, IVF and IVC were 27.2, 28.7 and 32.9% in the cows yielded 1, meat quality, respectively. The rate of blastocyst formation was 8.4 per head. The number of follicular oocytes collected from pedigree registered cows yielded 1, meat quality were 25.8, 27.1 and 27.0 per head, respectively. The rates of blastocyst formation were 23.0, 33.7 and 42.6% in the meat quality of 1, after in vitro-manipulation, respectively (p<0.05). The rate of blastocyst formation was 8.5 per head. In conclusion, these results suggest that in vitro embryo production system using individual culture system including IVM, IVF and IVC can make good use of the gene from the carcass of the high meat quality in Korean native cattle.
회분식반응기에서 스티렌과 알킬아크릴레이트의 공중합의 속도론
설수덕,김남석,황준호,최경선,강현석 동아대학교 공과대학부설 생산기술연구소 1997 生産技術硏究所硏究論文集 Vol.2 No.1
Stylene(St) with Methyl Acrylate(MA), Ethyl Acrylate(EA), and n-Butyl Acrylate(BA) were carried out with benzoylperoxide(BPO) in touene. The copolymer compositions were determined by Elemental Analyzer(EA). The monomer reactivity ratio, r1 and r2 were determined by both the Kelen-Tu¨do¨s method and Fineman-Ross method. The values of r1 and r2 for each monomer pair were as follows : r1(st)=0.57(0.68), r2(MA)=0.09(0.22). The φ factor of the copolymer over all St compositions ranged from 0.64 to 2.33 and increased with increasing St compositions. The copolymerization rates of each monomer pair were determined.
α-Cellulose / Alkylacrylate의 중합속도에 관한 연구
설수덕,강현석 동아대학교 환경문제연구소 1997 硏究報告 Vol.20 No.2
Uncatalyzed graft copolymerization of water-soluble monomers such as Acrylic acid(AA), methyl acrylate(MA), ethyl acrylate(EA), and n-butyl acrylate(BA1 was carried out without any usual radical initiator. The kinetics of graft copolymerization used various monomers (AA, MA, EA, BA) and inorganic salts (ZnC1₂, MgCl₂, NaCl). The temperature was varied from 60 to 80˚C. The results are as follows : 1. For constant concentration of inorganic salts, the value of graft yield and graft efficient was EA > MA > BA with various monomer. 2. The rate of graft polymerization R_(G) can be expressed as R_(G)=2.94×10^(-5)[M]^(2.34)[I]^(1.58)exp(-4.969/RT) 3. For constant concentration of inorganic salts, the initial decomposition temperature was EA > MA > BA > AA, and the maximum decomposition temperature was MA > BA > AA using thermal analysis