The coal industry in China has been moving from the semiarid eastern to the drier western regions since the beginning of this century.Water protection is of the utmost concern for coal mining in these regions.Lu'a...The coal industry in China has been moving from the semiarid eastern to the drier western regions since the beginning of this century.Water protection is of the utmost concern for coal mining in these regions.Lu'an,as one of the state coal mining bases in China,has been seeing increasingly heavier pressure for the protection of water resources.This article considers Lu'an as an example and describes the ways these concerns may be alleviated.High mine-water utilization rates have effectively reduced wasting of water and,consequently,have reduced water demand.Using the top layers of the Ordavician as aquifuge barriers can prevent floor karst water inrush into the longwall face and can protect the regional Ordovician karst water resources at the same time.The strength of the overlying Quaternary clay can protect against roof collapse and has successfully preserved the Quaternary porous water resource.展开更多
To realize the sustainable development of the economy of West China is not merely a great economic problem, butalso a great national problem and political issue. The economic activity is a practical activity for the e...To realize the sustainable development of the economy of West China is not merely a great economic problem, butalso a great national problem and political issue. The economic activity is a practical activity for the economic subject. Theeconomic development view, values, and the natural view of the economic subject determine the choice of the behavior of themain body in the economic activity. Only the behavior of the economic subject according with its demands could make theeconomy of west China have a sustainable development. Therefore, establishing the development view, the values and naturalview of the economic subject for sustainable development becomes a realistic problem that is worth of thinking.展开更多
The concept that the economic development and supremacy hydropower energy are superior to any others leads to the excessive hydropower exploitation of the west Sichuan, deeply threatening the fragile eco-environment i...The concept that the economic development and supremacy hydropower energy are superior to any others leads to the excessive hydropower exploitation of the west Sichuan, deeply threatening the fragile eco-environment in this area and that of the whole Yangtze River and even of the whole country simultaneously. The present paper put forward that hydropower should be developed with ecological, social, and economical concern. The primary, extensive, circling-developing development model should be altered immediately, and that based on caring about eco-environment, being harmonious to the regional eco-environment should be highlighted, and sustainability of hydropower should be paid attention to.展开更多
This paper focuses on pioneer women＇s struggle through social restriction in O Pioneers？ （1989） and My Antonia （1994） authored by Willa Cather, a famous American local color female writer. The purpose of the pap...This paper focuses on pioneer women＇s struggle through social restriction in O Pioneers？ （1989） and My Antonia （1994） authored by Willa Cather, a famous American local color female writer. The purpose of the paper is to analyze the protagonists＇ struggle through social restrictions in 0 pioneers？ and My Antonia, so as to analyze the situation pioneer women faced in American mid-west at that age. Women as cultural conservators and transmitters of civilization play integral parts in this respect. It is true that the morality system is set by the patriarchal society and restricts women＇s behavior. However, we must admit that when women stop functioning as civilization transmitters and cultural conservators, the world will go wrong seriously. In the two novels, hearty, generous women always create a nurturing and gracious atmosphere in their household. Practically, these women transmit the old civilization to the newly established homestead successfully展开更多
基金the sponsor by the National Natural Science Foundation of China (No. 50974115)the Program of Introducing Talents of Discipline to Universities (No.B07028)
文摘The coal industry in China has been moving from the semiarid eastern to the drier western regions since the beginning of this century.Water protection is of the utmost concern for coal mining in these regions.Lu'an,as one of the state coal mining bases in China,has been seeing increasingly heavier pressure for the protection of water resources.This article considers Lu'an as an example and describes the ways these concerns may be alleviated.High mine-water utilization rates have effectively reduced wasting of water and,consequently,have reduced water demand.Using the top layers of the Ordavician as aquifuge barriers can prevent floor karst water inrush into the longwall face and can protect the regional Ordovician karst water resources at the same time.The strength of the overlying Quaternary clay can protect against roof collapse and has successfully preserved the Quaternary porous water resource.
文摘To realize the sustainable development of the economy of West China is not merely a great economic problem, butalso a great national problem and political issue. The economic activity is a practical activity for the economic subject. Theeconomic development view, values, and the natural view of the economic subject determine the choice of the behavior of themain body in the economic activity. Only the behavior of the economic subject according with its demands could make theeconomy of west China have a sustainable development. Therefore, establishing the development view, the values and naturalview of the economic subject for sustainable development becomes a realistic problem that is worth of thinking.
文摘The concept that the economic development and supremacy hydropower energy are superior to any others leads to the excessive hydropower exploitation of the west Sichuan, deeply threatening the fragile eco-environment in this area and that of the whole Yangtze River and even of the whole country simultaneously. The present paper put forward that hydropower should be developed with ecological, social, and economical concern. The primary, extensive, circling-developing development model should be altered immediately, and that based on caring about eco-environment, being harmonious to the regional eco-environment should be highlighted, and sustainability of hydropower should be paid attention to.
文摘This paper focuses on pioneer women＇s struggle through social restriction in O Pioneers？ （1989） and My Antonia （1994） authored by Willa Cather, a famous American local color female writer. The purpose of the paper is to analyze the protagonists＇ struggle through social restrictions in 0 pioneers？ and My Antonia, so as to analyze the situation pioneer women faced in American mid-west at that age. Women as cultural conservators and transmitters of civilization play integral parts in this respect. It is true that the morality system is set by the patriarchal society and restricts women＇s behavior. However, we must admit that when women stop functioning as civilization transmitters and cultural conservators, the world will go wrong seriously. In the two novels, hearty, generous women always create a nurturing and gracious atmosphere in their household. Practically, these women transmit the old civilization to the newly established homestead successfully
