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Huizhou Liu,Jian Yang,Fei Qu,Hua Zhang,Hongwei Gu 한양대학교 세라믹연구소 2006 Journal of Ceramic Processing Research Vol.7 No.4
In research on YBa2Cu3O7 coated conductors, the development of buffer layers for epitaxial growth of YBa2Cu3O7 is very important. In our work, epitaxial buffer layers of Y2O3 have been deposited on biaxially textured Ni and NiW substrates using a continuous electron beam evaporation technique. The surface morphology and texture of Y2O3 buffer layers were characterized using SEM and XRD. The results show a sharp (2 0 0) orientation distribution and a smooth surface. Textured, crack-free, continuous Y2O3 buffer layers were obtained on moving tape using electron beam evaporation. In research on YBa2Cu3O7 coated conductors, the development of buffer layers for epitaxial growth of YBa2Cu3O7 is very important. In our work, epitaxial buffer layers of Y2O3 have been deposited on biaxially textured Ni and NiW substrates using a continuous electron beam evaporation technique. The surface morphology and texture of Y2O3 buffer layers were characterized using SEM and XRD. The results show a sharp (2 0 0) orientation distribution and a smooth surface. Textured, crack-free, continuous Y2O3 buffer layers were obtained on moving tape using electron beam evaporation.
Mingfang, Luo,Jianmin, Xing,Zhongxuan, Gou,Huizhou, Liu,Jiayong, Chen 한국화학공학회 2003 Korean Journal of Chemical Engineering Vol.20 No.4
The desulfurization of dibenzothiophene (DBT), 4,6-dimethyldibenzothiophene (4,6-DMDBT) and their mixture by lyophilized cells of Pseudomonas delafieldii R-8 was studied in the presence of dodecane. The desulfurization rate for 4,6-DMDBT was found to be about 40% in comparison with that for DBT. The desulfurization process for DBT and 4,6-DMDBT proceeded simultaneously without preference for either one. The desulfurization rate for each compound was decreased when they were mixed together. The extent of desulfurization of 4,6-DMDBT was increased with the increase of cell concentration and the decrease of the volume ratio of oil-to-water used. The specific desulfurization rate for 4,6-DMDBT could be reached to 10.4 mmol sulfur kg^(-1) (cell) h^(-1) [approximately 0.33 mg sulfur g^(-1) (cell) h^(-1)]. Pseudomonas delafieldii R-8 showed high desulfurization capability for straight-run diesel oil (containing 1,807 mg/L of sulfur). About 1,000 mg/L of sulfur in diesel oil was removed by resting cells of this strai in 24 h of reaction. The specific desulfurization rate was 8.75 mmol sulfur kg^(-1) (cell) h^(-1).