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Experimental study on the Ammonium Ion-Exchange Material and its removal of ammonia nitrogen from water LIU Qiongqiong1,a, TAN Xin*2,b, ZHAO Lin3,c 1School of Environmental Science and Engineering, Tianjin University，Tianjin 300072，P.R.China. 2School of Environmental Science and Engineering, Tianjin University，Tianjin 300072，P.R.China. 3School of Environmental Science and Engineering, Tianjin University，Tianjin 300072，P.R.China.
Materials and methods Experiment Material.
Study On Material Preparation.
Results and discussion Material Preparation.
American Journal of Epidemiology, 1994, 139(5)：466-473

Berndt, C/C–SiC composites for space applications and advanced friction systems, Materials Science and Engineering A. 412(2005) 177-181
Mei, Rapid densification of C/SiC composites by joint processes of CLVD and PIP, Materials Letters. 65(2011) 3137-3139
Pailler, Carbon fiber/reaction-bonded carbide matrix for composite materials–Manufacture and characterization, Journal of the European Ceramic Society. 32(2012) 4497-4505
Yin, Effect of carbon interlayer on oxidation behavior of C/SiC composites with a coating from room temperature to 1500 °C, Materials Science and Engineering A. 300(2001) 219-225
Jia, Rapid fabrication of C/C/SiC composite by PIP of HMDS, Journal of materials processing technology. 190(2007) 358-362

Podgórna 51/53, Polska 2Poznań University of Technology, Institute of Materials Technology 61-138 Poznań, ul.
Introduction Composite materials can be divided on the basis of manufacturing method, application field, properties or matrix type.
Quality features of castings of classic materials and specific features of metal matrix composite castings (bold) [6] No.
In the case of composite castings, a number of defects characteristic only for these materials is present.
Suchy, Database for foundry engineers-simulation DB – a modern database storing simulation results, Journal of Achievements in Material Manufacturing Engineering; 43/1 (2010) 349–352.

The stress, displacement and acceleration of the lining in different materials are got.
The three models have same rock and fault material, but the lining materials are different.
When using c40 as lining material, the displacement decreased 27% at the position of fault, but increasing 1700% at the tunnel entrance. 3 conclusions Three finite element models are built by using different earthquake-resistant materials.
Acknowledgement This research was supported by Grants No. 2007A02 from the Basic Science Research Foundation of the Institute of Engineering Mechanics, CEA , by Grants No.200808022 from special funds of earthquake industry, and by Grants No.HXKQ200605 from youth found of Harbin university.
Failure Characteristics and Influence Factor Analysis of Mountain Tunnels at Picketer Zones of Wenchuan Earthquake[J].Journal of Engineering Geology. in Chinese 200816(6):742-751 [5] WANG Mingnian.

Materials Sci. and Engg.
Series: Materials Science and Engineering 178, pp 1-10. [10] K Sekar, K Allesu, MA Joseph.
Mechanical and Tribological Properties of Al6063 Hybrid Composites Reinforced with SiC/ZrO2 by Stir Casting and Thixoforming Process, Materials Science Forum 979 (2020) 47-51
Microstructural Evaluation of Similar and Dissimilar Welding of Aluminum Metal Matrix Hybrid Composite by Friction Stir Welding, Materials Science Forum 979 (2020) 124-128
Mechanical and Tribological Properties of AA7050 Hybrid Composite Reinforced with Nano Al2O3/Micro ZrO2 Particles by Stir Casting Method, Materials Science Forum 969 (2019) 576-581

In order to process the optical crystal materials with high precision, we developed a magnetorheological finishing prototype.
It combines the electromagnetism, fluid dynamics, materials science and optical processing theory together, and provides a precisely way to control the removal amount of the material [4].
International Journal of Machine Tools and Manufacture, 2013, 69(6):1-10
International Journal of Machine Tools and Manufacture, 2009,49(7-8):554-560
Journal of Industrial and Engineering Chemistry, 2013,19(2):394-406.

This can be modeled as a rigid-visco-plastic material in MSC.
Journal of Manufacturing Science and Engineering, 2006, 128(3): 683-690
Advanced Materials Research, 2010, 126(128), 564-569
Journal of Materials Processing Technology, 2008, 201: 751-754
Journal of Manufac- turing Science and Engineering, ASME, 2007, 129(2): 380–387

Thermal Vibration of Functionally Graded Circular Plates Lei WU and Liansheng MAa School of Sciences, Lanzhou University of Technology, Lanzhou, China a lsma@lut.cn Keywords: Functionally graded materials (FGM); Circular plate; Thermal vibration; Shooting method.
It is assumed that the mechanical and thermal properties of functionally graded materials vary continuously through the thickness of the plate and obey a simple power law related to the volume fraction of the constituents.
Introduction Due to the excellent property of functionally graded materials (FGM) to withstanding high temperature gradient environments, it is widely used in many important engineering structures, such as aerospace, nuclear reactors and chemical plants.
Acknowledgements This work was supported by the National Fundamental Science Foundation of China (10472039), the Natural Science Foundation of Gansu Province(ZS041-A25-007) and the Doctoral Foundation of Lanzhou University of Technology.
Huang: International Journal of Non-linear Mechanics Vol.8 (1973), p.445

Under the ultrasonic vibration condition, the engineering ceramic’s materials removal way is changed.
Therefore, like other hard and brittle materials, engineering ceramics have been widely applied in the field of new engineering technology.
Ultrasonic machining is an effective method for machining brittle materials, which can improve the machining conditions [7-9].
Hu, A study on mechanism of nano-cutting single crystal silicon[J], Journal of Materials Machining Technology, 2007, 184:407-410 [2]Parash Kalita, Ajay P.
Transactions of ASME, Journal of Manufacturing Science & Engineering, 2001, 123 (1): 13-22

The activation product of Chrysotile as raw materials was used to prepare acicular basic magnesium carbonate by the carbon–ammonia method.
The main raw materials in experiment are as follows: 25% ammonia (AR), CO2 (food grade), NaOH (AR), etc.
Liu and M Li: Journal of the Chinese Ceramic Society, Vol. 36 (2008), p. 1311 [11] D.
Zhao, et al.: Journal of Salt and Chemical Industry, Vol. 38 (2009), p. 21 [12] L.
Li: Journal of Qinghai University (Nature Science), Vol. 24 (2006), p. 5