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This essay points out that high-frequency high-voltage DC switch power and DC pulse power are the two directions for ESP power development through analysis of the principle of ESP and the specific resistance of dust and the requirements for energy saving and discharge mitigating. The essay further analyzes and compares the characteristics of different switch powers and resonant converters before finally...
With the fast development of Chinese economy, expressway, as the most important portion of the highway networks, had been developed at an astonishing fast speed, which brought on increasingly severe ecological environmental problems in the mean time such as soil and water loss, damage of vegetation ecosystem, geological environment and water environment etc. As a result, the ecological environmental...
Urban sprawl caused quantities of environmental and social problems, the conflicts between the requirements of urbanization and the limited carrying capacities of resources and vulnerable environments are increasingly fierce. The sustainable development of the city has become an important topic. And ecological planning is the optimum method for the realization of this sustainability. This paper, aiming...
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