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Materials and Methods Research method: This study was carried on science experimental station of East China Normal University in Chongxi wetland during April to September in 2010.
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Materials and methods Discription of the tudy area.
Acknowledgements This study is financially supported by the National Nature Science Foundation of China (31101073), Natural Science Research Fund of the Education Department of Sichuan Province (09ZA075), and Open Research Fund of the Meteorological Center for Huaihe Watershed (HRM200905).
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Acknowledgements The study was financially supported by Doctor Foundation of Southwest University of Science and Technology (11zx7160) based on Sichuan University Key Laboratory of Engineering Structures and Characteristics of Materials Dynamic Load and the National Natural Science Foundation of China (Grant No. 41101164).
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The covalent bond would suppress the movement of dislocation compared with the purely metallic bond because the dislocation motion needs to overcome a larger barrier in covalent materials [38].
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Machining is one of the most widely used manufacturing processes to obtain the final form of mechanical parts, and its technology continues to advance in parallel with developments in materials, computers and sensors.
These concepts—high-speed machining or high-performance machining—have been consolidated in businesses thanks to increased knowledge of processes and constant innovations in materials, coatings, and mechanical and computer science.
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Yet, the complex physics of AM processes such as localized melting, re-solidification and oxidation might lead to material defects [2, 3].
Linear elastic material behavior for aluminum is assumed.
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For Al alloy the deeper grooves, surface cracks and scratches are more severe forms craters ensuing plastic deformation of unreinforced materials.
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Methods and Materials The engine performance tests have been conducted using the Toyota four cylinder inline of compression ignition (CI) engine.
The fuel properties are also investigate on the density, kinetic viscosity and dynamics viscosity at the temperature of 40°C using the density meter and viscometer in the material laboratory.
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The new tunnel and existing tunnel have the same lining material which are both concrete, elastic modulus is 30Gpa, Poisson ratio is 0.2, density is 2500 kg/m3, and thickness is 5% of the outer diameter.
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Metals are suggested as alternative materials for bipolar plates owning to their better mechanical properties and higher electrical conductivity[7,8].
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