Realized new break-through on the basis of existing security management theory, tentatively and creatively carried out ＂realizing management theory of mine security production＂ and proposed ＂bridge＂ mode of realiz...Realized new break-through on the basis of existing security management theory, tentatively and creatively carried out ＂realizing management theory of mine security production＂ and proposed ＂bridge＂ mode of realizing green management theory. Green management theory has an integrated system structure. The green management system of mine security production includes three parts, the foundation of green system, the supervision system of green system operation and the safeguard system of green system. The key of ＂bridge＂ mode is to analyze the existing insecurity factors in the process of security production and establish corresponding regulations.展开更多
In this paper, we conduct research on the ability and the employment guiding thinking and the applications on professional basiccourse of higher vocational art and practice of bridging mode. Art design is the biggest ...In this paper, we conduct research on the ability and the employment guiding thinking and the applications on professional basiccourse of higher vocational art and practice of bridging mode. Art design is the biggest characteristic of individual creativity, art need to createinstead of imitating and copying. In the process of production, creative thinking is the key to a successful art products, grasp the technology canproduce the same design and the product, but the hand of art and technology perfect combination is possible to create the art products. For designand production activities in the basic technical indexes and basic operation can understand and grasp the designer is unable to turn the designinto product, higher vocational art and design. This paper integrates the state-of-the-art angles and perspectives on the issues that hold specialmeaning.展开更多
A series of VOx/CeO2 catalysts we re synthesized via vanadia supported on ceria with different BET surface areas.The catalysts were employed to investigate the active sites for the selective catalytic reduction of NO ...A series of VOx/CeO2 catalysts we re synthesized via vanadia supported on ceria with different BET surface areas.The catalysts were employed to investigate the active sites for the selective catalytic reduction of NO with NH3(NH3-SCR).The kinetic results show that VOx/CeO2 catalysts exhibit nearly constant apparent activation energies(Ea),indicating the same SCR reaction mechanism.The V-O-Ce bridging modes and oligomeric VOx were identified and quantified by Raman,FT-IR and H2-TPR.The amounts of the V-O-Ce bridging modes calculated by H2-TPR are correlated to the NH3-SCR intrinsic reaction rates.The turnover frequencies(TOFs) show a constant value at the same temperature,which were calculated based on the number of V-O-Ce bridging modes of VOx/CeO2 catalysts.Therefore,it can be concluded that the V-O-Ce bridging modes are the active sites of VOx/CeO2 catalysts for the NH3-SCR reaction.展开更多
文摘Realized new break-through on the basis of existing security management theory, tentatively and creatively carried out ＂realizing management theory of mine security production＂ and proposed ＂bridge＂ mode of realizing green management theory. Green management theory has an integrated system structure. The green management system of mine security production includes three parts, the foundation of green system, the supervision system of green system operation and the safeguard system of green system. The key of ＂bridge＂ mode is to analyze the existing insecurity factors in the process of security production and establish corresponding regulations.
文摘In this paper, we conduct research on the ability and the employment guiding thinking and the applications on professional basiccourse of higher vocational art and practice of bridging mode. Art design is the biggest characteristic of individual creativity, art need to createinstead of imitating and copying. In the process of production, creative thinking is the key to a successful art products, grasp the technology canproduce the same design and the product, but the hand of art and technology perfect combination is possible to create the art products. For designand production activities in the basic technical indexes and basic operation can understand and grasp the designer is unable to turn the designinto product, higher vocational art and design. This paper integrates the state-of-the-art angles and perspectives on the issues that hold specialmeaning.
基金Project supported by the National Key Research and Development Program (2017YFC0211302)China Huadian Science and Technology Institute (CHDI.KJ-20)。
文摘A series of VOx/CeO2 catalysts we re synthesized via vanadia supported on ceria with different BET surface areas.The catalysts were employed to investigate the active sites for the selective catalytic reduction of NO with NH3(NH3-SCR).The kinetic results show that VOx/CeO2 catalysts exhibit nearly constant apparent activation energies(Ea),indicating the same SCR reaction mechanism.The V-O-Ce bridging modes and oligomeric VOx were identified and quantified by Raman,FT-IR and H2-TPR.The amounts of the V-O-Ce bridging modes calculated by H2-TPR are correlated to the NH3-SCR intrinsic reaction rates.The turnover frequencies(TOFs) show a constant value at the same temperature,which were calculated based on the number of V-O-Ce bridging modes of VOx/CeO2 catalysts.Therefore,it can be concluded that the V-O-Ce bridging modes are the active sites of VOx/CeO2 catalysts for the NH3-SCR reaction.
