The influence on fine particle aggregation and flotation behavior induced by high intensity conditioning(HIC) from saturated of the slurry with CO2 saturation was investigated.Bubble size measurements were conducted.T...The influence on fine particle aggregation and flotation behavior induced by high intensity conditioning(HIC) from saturated of the slurry with CO2 saturation was investigated.Bubble size measurements were conducted.The effect of dissolved gas,xanthate addition and agitation speed on fine sphalerite particle aggregation-and flotation-behavior were studied.The results show that during HIC in air or CO2 saturated water xanthate acts as a frother.The dissolved gas content in the pulp and HIC play a synergistic role in promoting fine particle aggregation and hence flotation;a significantly enhanced aggregation of fine sphalerite particles in a CO2 saturated slurry by HIC is observed.The aggregate size increased when the agitation speed was increased from 700 r/min to 1500 r/min.Increasing the HIC speed to 1500 r/min caused a positive impact on flotation kinetics.Further increasing the speed to 2000 r/min resulted in an adverse effect on flotation kinetics.展开更多
In this paper,we study the interactive relationship between the agglomeration of urban elements and the evolution of eco-environmental pressure.We build an index system for evaluating the agglomeration of urban elemen...In this paper,we study the interactive relationship between the agglomeration of urban elements and the evolution of eco-environmental pressure.We build an index system for evaluating the agglomeration of urban elements and eco-environmental pressure.Using the entropy method and response intensity model,we analyze how urban elements agglomeration influenced eco-environmental pressure in Changchun from 1990 to 2012,eliciting the changing features and influential factors.Ultimately,we conclude there is a significant interactive relationship between the agglomeration of urban elements and the evolution of eco-environmental pressure in Changchun.This is inferred from the degree of this agglomeration in Changchun having increased since 1990,with the degree of eco-environmental pressure first decreasing and then increasing.Alongside this,the impact of urban elements agglomeration on eco-environmental pressure has changed from negative to positive.The main reasons behind this shift are arguably the rapid growth of urban investment and ongoing urbanization.展开更多
This paper is focus on the brand effect of industrial agglomeration, and undertakes the following conclusions： firstly, regional industrial brand and industry agglomeration will influence each other. Secondly, indust...This paper is focus on the brand effect of industrial agglomeration, and undertakes the following conclusions： firstly, regional industrial brand and industry agglomeration will influence each other. Secondly, industrial agglomeration on regional industry brand has the strengthening mechanism. Thirdly, the more of enterprises in industrial cluster, the more ＂hitchhike＂ problems will occur. It shows that enterprises in promoting the regional industry brand will influence exacted input and reward asymmetry, causing the enterprise to promote the maintenance of regional industry brand intrinsic motivation deficiency. However, widespread presence ＂hitchhike＂ psychologicalexpectations. This led to the regional industrial brand are often not appropriate and reasonable maintenance and promotion.展开更多
基金Project 50674103 supported by the National Natural Science Foundation of China
文摘The influence on fine particle aggregation and flotation behavior induced by high intensity conditioning(HIC) from saturated of the slurry with CO2 saturation was investigated.Bubble size measurements were conducted.The effect of dissolved gas,xanthate addition and agitation speed on fine sphalerite particle aggregation-and flotation-behavior were studied.The results show that during HIC in air or CO2 saturated water xanthate acts as a frother.The dissolved gas content in the pulp and HIC play a synergistic role in promoting fine particle aggregation and hence flotation;a significantly enhanced aggregation of fine sphalerite particles in a CO2 saturated slurry by HIC is observed.The aggregate size increased when the agitation speed was increased from 700 r/min to 1500 r/min.Increasing the HIC speed to 1500 r/min caused a positive impact on flotation kinetics.Further increasing the speed to 2000 r/min resulted in an adverse effect on flotation kinetics.
基金Under the auspices of Education Ministry for Development of Liberal Arts and Social Science(No.14YJA790035)
文摘In this paper,we study the interactive relationship between the agglomeration of urban elements and the evolution of eco-environmental pressure.We build an index system for evaluating the agglomeration of urban elements and eco-environmental pressure.Using the entropy method and response intensity model,we analyze how urban elements agglomeration influenced eco-environmental pressure in Changchun from 1990 to 2012,eliciting the changing features and influential factors.Ultimately,we conclude there is a significant interactive relationship between the agglomeration of urban elements and the evolution of eco-environmental pressure in Changchun.This is inferred from the degree of this agglomeration in Changchun having increased since 1990,with the degree of eco-environmental pressure first decreasing and then increasing.Alongside this,the impact of urban elements agglomeration on eco-environmental pressure has changed from negative to positive.The main reasons behind this shift are arguably the rapid growth of urban investment and ongoing urbanization.
基金ACKNOWLEDGMENT This paper was sponsor by National Natural Science Foundation of China （Youth Project ）： ＂Chinese regional industry brand diffusion path and structural industry policy research＂, project number （71003029） and Guangdong Provincial Science and Technology Department of science and technology project （social development project ）：＂ Guangdong＂ double transfer＂ strategy under the optimization of industrial structure and regional financial support services＂, project number （2010B080701029）
文摘This paper is focus on the brand effect of industrial agglomeration, and undertakes the following conclusions： firstly, regional industrial brand and industry agglomeration will influence each other. Secondly, industrial agglomeration on regional industry brand has the strengthening mechanism. Thirdly, the more of enterprises in industrial cluster, the more ＂hitchhike＂ problems will occur. It shows that enterprises in promoting the regional industry brand will influence exacted input and reward asymmetry, causing the enterprise to promote the maintenance of regional industry brand intrinsic motivation deficiency. However, widespread presence ＂hitchhike＂ psychologicalexpectations. This led to the regional industrial brand are often not appropriate and reasonable maintenance and promotion.
