Mesoporous TiO2 ceramic films have been prepared upon the Ti alloy substrate by the micro-arc oxidation (MAO) technology. To enhance the photo-catalytic property of the films, Eu2O3 particles were added into the elect...Mesoporous TiO2 ceramic films have been prepared upon the Ti alloy substrate by the micro-arc oxidation (MAO) technology. To enhance the photo-catalytic property of the films, Eu2O3 particles were added into the electrolyte solution of Na2CO3/Na2SiO3. Scanning electron microscope (SEM), energy dispersive (EDS), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) are employed to characterize the modified films. Diffuse reflectance spectra (DRS) test, photo-generated current test and photo decomposition test are applied to evaluate the photo-catalytic property of the modified films. The results show that Eu2O3 transformed into one-dimensional (1-D) nano-wires embedded within the composite film, and the film has high photo-catalytic property.展开更多
With the vigorous development of China＇ s tourism industry, the rapid expansion of universities and tourism management enrollment has trained a large number of tourism professionals, and promoted the rapid developmen...With the vigorous development of China＇ s tourism industry, the rapid expansion of universities and tourism management enrollment has trained a large number of tourism professionals, and promoted the rapid development of tourism. However, the increasing number of colleges and universities tourism management enrollment and the expansion of the tourism industry have not been able to meet the demand for high-class expertise, which partly due to low tourism management teaching quality of colleges and universities. Whereas the school-enterprise cooperation in personnel training mode is one kind of tourism management that can effectively improve the quality of teaching of important measures.展开更多
In this paper,the power-law fluid flows in a two-dimensional square cavity are investigated in detail with multi-relaxation-time lattice Boltzmann method(MRTLBM).The influence of the Reynolds number(Re)and the power-l...In this paper,the power-law fluid flows in a two-dimensional square cavity are investigated in detail with multi-relaxation-time lattice Boltzmann method(MRTLBM).The influence of the Reynolds number(Re)and the power-law index(n)on the vortex strength,vortex position and velocity distribution are extensively studied.In our numerical simulations,Re is varied from 100 to 10000,and n is ranged from 0.25 to 1.75,covering both cases of shear-thinning and shear-thickening.Compared with the Newtonian fluid,numerical results show that the flow structure and number of vortex of power-law fluid are not only dependent on the Reynolds number,but also related to power-law index.展开更多
文摘Mesoporous TiO2 ceramic films have been prepared upon the Ti alloy substrate by the micro-arc oxidation (MAO) technology. To enhance the photo-catalytic property of the films, Eu2O3 particles were added into the electrolyte solution of Na2CO3/Na2SiO3. Scanning electron microscope (SEM), energy dispersive (EDS), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) are employed to characterize the modified films. Diffuse reflectance spectra (DRS) test, photo-generated current test and photo decomposition test are applied to evaluate the photo-catalytic property of the modified films. The results show that Eu2O3 transformed into one-dimensional (1-D) nano-wires embedded within the composite film, and the film has high photo-catalytic property.
文摘With the vigorous development of China＇ s tourism industry, the rapid expansion of universities and tourism management enrollment has trained a large number of tourism professionals, and promoted the rapid development of tourism. However, the increasing number of colleges and universities tourism management enrollment and the expansion of the tourism industry have not been able to meet the demand for high-class expertise, which partly due to low tourism management teaching quality of colleges and universities. Whereas the school-enterprise cooperation in personnel training mode is one kind of tourism management that can effectively improve the quality of teaching of important measures.
基金supported by the National Natural Science Foundation of China(Grant Nos.11272132,51125024,51006040)China Postdoctoral Science Foundation(Grant No.2012M521424).
文摘In this paper,the power-law fluid flows in a two-dimensional square cavity are investigated in detail with multi-relaxation-time lattice Boltzmann method(MRTLBM).The influence of the Reynolds number(Re)and the power-law index(n)on the vortex strength,vortex position and velocity distribution are extensively studied.In our numerical simulations,Re is varied from 100 to 10000,and n is ranged from 0.25 to 1.75,covering both cases of shear-thinning and shear-thickening.Compared with the Newtonian fluid,numerical results show that the flow structure and number of vortex of power-law fluid are not only dependent on the Reynolds number,but also related to power-law index.
