Aspiration spiral flow type centrifugal flotation machine takes full advantage of centrifugal force field and gravitational field, and strengthens flotation of coal slurry. As a new-type flotation machine of high effi...Aspiration spiral flow type centrifugal flotation machine takes full advantage of centrifugal force field and gravitational field, and strengthens flotation of coal slurry. As a new-type flotation machine of high efficiency, its key component is bubble generator. Which completes the process of ore pulp inflation and liberalization. The design, parameters and working principle of bubble generator provide the design of the same device in similar equipment with reference. The result of industrial operation shows that this machine is of such features as small occupational area, greater concentration ratio, high processing capacity, high efficiency and lower investment etc.展开更多
The construction of China-Mongolia-Russia high-speed railways is a strategic move to promote transportation infrastructure inter-connectivity between these countries, which will accelerate the implementation of the Ch...The construction of China-Mongolia-Russia high-speed railways is a strategic move to promote transportation infrastructure inter-connectivity between these countries, which will accelerate the implementation of the China-Mongolia-Russia Economic Corridor. However, well-planned China-Mongolia-Russia high-speed railways demand accurately identifying construction risks, scientifically evaluating risk levels, and mapping the spatial distribution of these risks. Therefore, this study established the integrated risk evaluation model(IREM) to scientifically evaluate the economic, social, and ecological risks of China-Mongolia-Russia high-speed railway construction and determine their magnitude and spatial distribution pattern. Based on this analysis, we propose designs for the east and west China-Mongolia-Russia high-speed railways and policy suggestions to mitigate construction risks. Suggestions include developing innovative cooperation of the "high-speed railway for resources and market", strengthening communication and technology dissemination, and applying innovative engineering techniques and setting buffers; establishing collaborative prevention and control systems to mitigate the three major ecological risks in the China, Mongolia, and Russia trans-border areas; and promoting economic integration by improving strategic coordination. In summary, this study provides scientific support for designing the China-Mongolia-Russia high-speed railways minimizing construction risks.展开更多
Since some years, the strategy of a Green Economy as a current form of ecological modernization was proposed. The paper highlights the core issues of the concept and its structural constraints. Several constraints of ...Since some years, the strategy of a Green Economy as a current form of ecological modernization was proposed. The paper highlights the core issues of the concept and its structural constraints. Several constraints of a far-reaching realization of a Green Economy are presented, and one constraint is highlighted, i.e., the imperial mode of （production and） living. The latter gives emphasis to the continuous and largely unquestioned access to products produced by cheap labor and under environmentally problematic conditions. This mode of living, the paper argues, is also attractive among the upper and middle classed in countries with emerging economies like China. Moreover, it compares it with the concept of sustainable development which emerged some 15 years ago. Like sustainable development, proposals for a Green Economy might become ＂a tranquilizing dis- positive＂ in order to silence doubt and criticisms. However, it is argued that, despite the improbability of realizing the ambitious objectives, the Green Economy strategy might contribute to further capitalist development. Environmental issues might be integrated into the mode of production and living. However, given capitalist and imperial structures and dynamics, this will occur in highly selective and partial ways. The author calls this emerging constellation and possible new mode of development in some countries or regions of the world Green Capitalism.展开更多
文摘Aspiration spiral flow type centrifugal flotation machine takes full advantage of centrifugal force field and gravitational field, and strengthens flotation of coal slurry. As a new-type flotation machine of high efficiency, its key component is bubble generator. Which completes the process of ore pulp inflation and liberalization. The design, parameters and working principle of bubble generator provide the design of the same device in similar equipment with reference. The result of industrial operation shows that this machine is of such features as small occupational area, greater concentration ratio, high processing capacity, high efficiency and lower investment etc.
基金Science and Technology Basic Resources Survey Project of China,No.2017FY101304Major R&D Project of Chinese Academy of Sciences,No.ZDRW-ZS-2016-6-5National Natural Science Foundation of China,No.41701639
文摘The construction of China-Mongolia-Russia high-speed railways is a strategic move to promote transportation infrastructure inter-connectivity between these countries, which will accelerate the implementation of the China-Mongolia-Russia Economic Corridor. However, well-planned China-Mongolia-Russia high-speed railways demand accurately identifying construction risks, scientifically evaluating risk levels, and mapping the spatial distribution of these risks. Therefore, this study established the integrated risk evaluation model(IREM) to scientifically evaluate the economic, social, and ecological risks of China-Mongolia-Russia high-speed railway construction and determine their magnitude and spatial distribution pattern. Based on this analysis, we propose designs for the east and west China-Mongolia-Russia high-speed railways and policy suggestions to mitigate construction risks. Suggestions include developing innovative cooperation of the "high-speed railway for resources and market", strengthening communication and technology dissemination, and applying innovative engineering techniques and setting buffers; establishing collaborative prevention and control systems to mitigate the three major ecological risks in the China, Mongolia, and Russia trans-border areas; and promoting economic integration by improving strategic coordination. In summary, this study provides scientific support for designing the China-Mongolia-Russia high-speed railways minimizing construction risks.
文摘Since some years, the strategy of a Green Economy as a current form of ecological modernization was proposed. The paper highlights the core issues of the concept and its structural constraints. Several constraints of a far-reaching realization of a Green Economy are presented, and one constraint is highlighted, i.e., the imperial mode of （production and） living. The latter gives emphasis to the continuous and largely unquestioned access to products produced by cheap labor and under environmentally problematic conditions. This mode of living, the paper argues, is also attractive among the upper and middle classed in countries with emerging economies like China. Moreover, it compares it with the concept of sustainable development which emerged some 15 years ago. Like sustainable development, proposals for a Green Economy might become ＂a tranquilizing dis- positive＂ in order to silence doubt and criticisms. However, it is argued that, despite the improbability of realizing the ambitious objectives, the Green Economy strategy might contribute to further capitalist development. Environmental issues might be integrated into the mode of production and living. However, given capitalist and imperial structures and dynamics, this will occur in highly selective and partial ways. The author calls this emerging constellation and possible new mode of development in some countries or regions of the world Green Capitalism.
