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학술논문-저작권법 전부개정과 한미FTA가 한국 저작권 환경에 미친 영향
김기태,Kim, Gi-Tae 대한인쇄문화협회 2007 프린팅코리아 Vol.63 No.-
제9회 한중출판학술회의가 지난 8월 2일부터 8일까지 중국 북경에서 열렸다. 본지는 김기태교수가 발제한 '저작권법 전부개정과 한미FTA가 한국 저작권 환경에 미친영향'을 요약 게재한다.
22℃ 에서 동내의 수소 확산에 미치는 격자 공자 및 전위의 영향
김기태,김석수,변수일 대한금속재료학회(대한금속학회) 1988 대한금속·재료학회지 Vol.26 No.6
The effects of vacancies and dislocations on the hydrogen diffusion in Cu have been studied at 22℃ by using electrochemical permeation technique. Two kinds of specimens were prepared from cold-rolled Cu specimens. One batch (A) of this material was annealed for 5 min at 950℃ and then quenched in cold water prior to reannealing for various times at 80 and/or 150℃. The other (B) was annealed either for 24 h at 150℃ or for 24 h at 750℃. Hydrogen diffusivity has been measured in the quenched specimen as a function of annealing for various times at 80 and/or 150 ℃. Electrical resistivity measurements of the quenched specimen A indicate that lattice vacancies are annihilated with reannealing at 80 ℃. As reannealing Time increases, the diffusivity increases, suggesting that the vacancies act as trap sites of hydrogen. The apparent diffusivity of hydrogen in the cold -rolled specimen annealed at 750 ℃ is slightly higher than that in the cold-rolled specimen annealed at 150 ℃, suggesting that the dislocations hardly act as trap sites of hydrogen in Cu contrary to BCC metals.