On June 27th, the China Construction Ministry (CCM) announced that China will intensify efforts to implement the supervision of construction standards with the goal of promoting energy saving practices. By 2010, u... On June 27th, the China Construction Ministry (CCM) announced that China will intensify efforts to implement the supervision of construction standards with the goal of promoting energy saving practices. By 2010, urban construction projects are expected to achieve energy savings of 50%, and by 2020 to save 351 million tons of coal.……展开更多
There are abundant energy reserves such as oil,natural gas,hydrate,and wind energy in the ocean.Countries around the globe are competing to advance their marine energy development technologies.The exploitation of mari...There are abundant energy reserves such as oil,natural gas,hydrate,and wind energy in the ocean.Countries around the globe are competing to advance their marine energy development technologies.The exploitation of marine resources relies on cutting-edge industrial equipment.After decades of R&D endeavors,China has obtained most of the key technologies for the design,production,testing,and field application of marine energy development equipment(Xie and Zeng,2021).展开更多
In the fracture problems of hydrophilic elastic materials under coupling effects of heat conduction, moisture diffusion and mechanical deformation, the conventional J-integral is no longer path independent. The value ...In the fracture problems of hydrophilic elastic materials under coupling effects of heat conduction, moisture diffusion and mechanical deformation, the conventional J-integral is no longer path independent. The value of J is unequal to the energy release rate in hygrothermal coupling cases. In the present paper, we derived a general form of the energy release rate for hygrothermal fracture problems of the hydrophilic elastic materials on the basis of energy balance equation in cracked areas. By introducing the constitutive relations and the essential equations of irreversible thermodynamics, a specific expression of the energy release rate was obtained, and the expression can be reformmulated as path independent integrals, which is equivalent to the energy release rate of the fracture body. The path independence of the integrals is then verified numerically.展开更多
Due to the rapid growth of China’s demands for energy resources, energy security hasbecome a more and more important issue in making future energy decisions. China’senergy policy is founded on the principle of “mul...Due to the rapid growth of China’s demands for energy resources, energy security hasbecome a more and more important issue in making future energy decisions. China’senergy policy is founded on the principle of “multiple energy supplies and imports”. Itwould be one of the best solutions if China could make use of its various advantages,attentively develop its multi-energy cooperation with other countries, and seek for acooperative program that is accessible to many sides such as China, Russia, Japan andSouth Korea. Nevertheless, under current circumstances, how to realize “multiple energysupply and import” is not only a focal point for China’s energy security but also one of thetricky issues for the Chinese government. In this paper, the author has put forward someviewpoints and policy suggestions on Sino-Russian energy cooperation and other geo-economic strategic problems.展开更多
文摘 On June 27th, the China Construction Ministry (CCM) announced that China will intensify efforts to implement the supervision of construction standards with the goal of promoting energy saving practices. By 2010, urban construction projects are expected to achieve energy savings of 50%, and by 2020 to save 351 million tons of coal.……
文摘There are abundant energy reserves such as oil,natural gas,hydrate,and wind energy in the ocean.Countries around the globe are competing to advance their marine energy development technologies.The exploitation of marine resources relies on cutting-edge industrial equipment.After decades of R&D endeavors,China has obtained most of the key technologies for the design,production,testing,and field application of marine energy development equipment(Xie and Zeng,2021).
基金The project supported by the Key Project of Chinese Ministry of Education (03145)the Science Fund of Southwest Jiaotong University
文摘In the fracture problems of hydrophilic elastic materials under coupling effects of heat conduction, moisture diffusion and mechanical deformation, the conventional J-integral is no longer path independent. The value of J is unequal to the energy release rate in hygrothermal coupling cases. In the present paper, we derived a general form of the energy release rate for hygrothermal fracture problems of the hydrophilic elastic materials on the basis of energy balance equation in cracked areas. By introducing the constitutive relations and the essential equations of irreversible thermodynamics, a specific expression of the energy release rate was obtained, and the expression can be reformmulated as path independent integrals, which is equivalent to the energy release rate of the fracture body. The path independence of the integrals is then verified numerically.
文摘Due to the rapid growth of China’s demands for energy resources, energy security hasbecome a more and more important issue in making future energy decisions. China’senergy policy is founded on the principle of “multiple energy supplies and imports”. Itwould be one of the best solutions if China could make use of its various advantages,attentively develop its multi-energy cooperation with other countries, and seek for acooperative program that is accessible to many sides such as China, Russia, Japan andSouth Korea. Nevertheless, under current circumstances, how to realize “multiple energysupply and import” is not only a focal point for China’s energy security but also one of thetricky issues for the Chinese government. In this paper, the author has put forward someviewpoints and policy suggestions on Sino-Russian energy cooperation and other geo-economic strategic problems.
