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The best known commercial solution is the selective catalytic reduction (SCR) of NOx using urea as a reducing agent, but this method can conformation the secondary pollution and the reaction should keep up at 350 ℃.[1-5] In the research of catalysts for NO oxidation, much effort has been made to focus on supported platinum materials.
Acknowledgments This work was supported by National Natural Science Foundation of China (20907018), Natural Science Foundation of Yunnan Province (2007E184M), Doctoral and New Teachers Foundation of Education Department (20095314120008) and the Analysis and Measurement foundation of Kunming University of Science & Technology.
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Shaping materials containing porous constituents is a critical issue.
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In case of complex utilization of wastes, they are at the same time initial raw materials and partly fuel for the building materials industry.
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Failure modes in ceramicbased layer structures: A basis for materials design of dental crowns.
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With the liquid-to-solid interalloying of dissimilar materials controlled well, a reaction zone is gained on the interface.
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Fig.2 Layout of the blast holes in the driving face Implementation of the damage model into FLAC3D code 3.1 Damage evolution law There are a lot of initial defects such as fractures and joints in the natural rock which can be regarded as a brittle damage materials containing initial injury.
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This allows for cheaper and much more efficient materials production that minimizes materials loss.
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