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ZhEng, D. W.,Huang, Y. P.,Tang, T. A.,Cui, Q.,Li, A. Z.,Zhou, S. X.,He, Z. J.,Chen, Z.,Zhang, X. J.,Kwor, R. 대한전자공학회 1993 ICVC : International Conference on VLSI and CAD Vol.3 No.1
A novel process for silicon on insulator(SOI) technology has been presented. Single crystal Si is grown by molecular beam epitaxy(MBF) on a porous silicon(PS) system consisting of two layers of PS with different microstructures. Subsequent lateral oxidation converts the structure to SOI wish excellent insulation property. Si islands with a width of 135㎛ and low doping concentration have been achieved.
Evaluation of Ni Film Interfacial Energy Release Rate on Titanium and Stainless Steel Substrates
Ren, F. Z.,Zhao, W. Z.,Zhou, G. S.,Ju, X. H.,Zheng, M. 대한금속학회 2002 METALS AND MATERIALS International Vol.8 No.2
An expression including the effect of residual stress on the interfacial energy release rate is proposed for peeling experiments according to the energy-balance argument. The influence of residual stress on the external work is also contained in the expression. Two numerical methods are employed to evaluate the values of the work expenditure G_db, which is the actual energy dissipated during bending of the peel arm near the peel front. The peeling method is employed to test the interfacial energy release rates, G, for Ni films on Titanium and stainless steel substrates. The results indicate that the value of G for Ni films on stainless steel substrate is about 5.47-6.03 N/m, while 5.23-6.71 N/m for Ni films on titanium substrate; the interfacial energy release rates, G, do not depend on the residual stress in film, film thickness nor peel angle. The effect of residual stress in film on peel strength P/h is also discussed.
Yin, Q.Q.,Chang, J.,Zuo, R.Y.,Chen, L.Y.,Chen, Q.X.,Wei, X.Y.,Guan, Q.F.,Sun, J.W.,Zheng, Q.H.,Yang, X.,Ren, G.Z. Asian Australasian Association of Animal Productio 2010 Animal Bioscience Vol.23 No.2
In order to improve the availability of phytase and probiotics together, a phytase gene from Aspergillus ficuum has been expressed in Lactobacillus. In this study, the transformed Lactobacillus with phytase gene was fed to pigs to determine its effect on pig production, feed conversion and gut microbes. Forty eight, 60-day-old, castrated pigs (Duroc${\times}$Landrace${\times}$Pietrain) were assigned to 6 groups, 8 pigs for each group. Group 1 was the control, group 2 was added with chlortetracycline (500 mg/kg), group 3 was added with the transformed Lactobacillus (500 mg/kg) with 20% (w/w) of calcium monohydrogen phosphate (CMP, $CaHPO_{4}$) removed, group 4 was added with the natural Lactobacillus (500 mg/kg) with 20% (w/w) of CMP removed, group 5 was added with the transformed Lactobacillus (500 mg/kg) with 40% (w/w) of CMP removed, group 6 was added with phytase (500 mg/kg) with 40% (w/w) of CMP removed. The results showed: i) the average daily gain (ADG) was improved in groups 2, 3 and 4 (p<0.05); ii) the diarrhea rates in the groups added with Lactobacillus were lower than in the other groups (p<0.05), in which the transformed Lactobacillus had more effect on reducing digestive disease; iii) the transformed Lactobacillus was most effective in improving the digestibilities of crude protein (CP), calcium (Ca), phosphorus (P), compared with the other groups (p<0.05); iv) Lactobacillus could increase lactic acid bacterium number and ammonia concentrations, and decrease pH values and E. coli number in pig feces (p<0.05); v) the phytase activity in the feces of pigs fed with the transformed Lactobacillus was 133.32 U/g, which was higher than in group 4 (9.58 U/g, p<0.05), and was almost the same as group 6 (135.94 U/g); vi) the transformed Lactobacillus could increase serum concentrations of IgA, triglyceride, and glutamic oxaloacetic transaminase activity (p<0.05), and had no significant effect on other serum indexes (p>0.05).
DNA 분석을 통한 한우 , 연변황우 및 화우의 유전적 특성
신원집,여정수,김재우,신수길,정진우,이지홍 한국축산학회 1999 한국축산학회지 Vol.41 No.4
This study was conducted to identify the genetic parameters and genetic relationships among 3 cattle breeds of Hanwoo (Korea), Yanbian yellow cattle (China), and Wagyu (Japan). DNA fingerprinting was prepared using M13 probe and Pst 1 enzyme. Genetic homogencities of Hanwoo and Yanbian yellow cattle were comparatively lower than that of Wagyu, suggesting genetic improvement by active breeding program for Wagyu compared to Hanwoo and Yanbian yellow cattle and possibility of improvement capacity for Hanwoo and Yanbian yellow cattle. Genetic similarities between breeds were not significantly different among them, suggesting that these 3 breeds have been raised independently without any inflow or outflow of gene source for a while.