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Vegliò2,c 1 Polytechnic University of Marche, Department of Marine Sciences, Via Brecce Bianche, 60131 Ancona, Italy 2 University of L'Aquila, Department of Chemistry, Chemical Engineering and Materials, Monteluco di Roio, 67040 L'Aquila, Italy a f.beolchini@univpm.it, b c.pennesi@univpm.it, cfrancesco.veglio@univaq.it Keywords: biosorption, lead, arsenic, seaweeds, seagrasses.
Materials and Methods Marine macrophytes.
The employed biosorbent materials were obtained from several species of marine seaweeds and seagrasses.
Journal of Hazardons Materials Vol. 142 (2007), p.1
Chu: Chemical Engineering Journal Vol. 97 (2004), p. 249

Materials Limestone powder.
Other materials.
Influence of the Polycarboxylic Admixture on Shrinkage Performance of Concrete[D].Nanjing:SOUTHEAST UNIVERSITY School of Materials Science and Engineering,2011
JOURNAL OF BUILDING MATERIALS,2009,12(3):266-271
Journal of Chongqing Jianzhu University,2012,34(5):154-158

Convergence Analysis for the Elliptic Boundary Value Problem of Rectangle Nested Refinement Finite Element with Truncation Wang Qisheng a, Zhao Yigao b School of Mathematics and Computational Science, Wuyi University, Jiangmen , 529020, China awqs9988@yahoo.cn bzhaoyigao2005@163.com Keywords: elliptic boundary value problem; rectangle nested refinement; truncation finite element; convergence analysis.
*This work is supported by Guangdong Natural Science Fund of China (No. 10452902001005845) and Jiangmen Science Technology Fund of Guangdong (No. 30519003).
[2] S, Zhang, Numerical integration with Taylor truncations for the quadrilateral and hexahedral finite elements, Journal of Computational and applied Mathematics 205 (2007) 325-342
Advanced Materials Research Vols. 317-319(2011) pp1926-1930.

Experimental Study on Friction and Wear Between Drill Collar and Casing Bensheng Huang1, 2, a* and Yao Zhu2, b 1State Key Lab of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China 2School of Materials Science and Engineering of Southwest Petroleum University, Chengdu 610500, China ahbslxp@163.com, b513262229@qq.com Keywords: Friction, Wear, Drill collar, Casing.
The results showed that the materials of drill collar and casing after different heat treatment had varying degrees of wear, both of the respective wear amounts were gradually increasing with the increase of hardness of them, the wear extent of casing material was greater than that of drill collar material.
Direct-reading spectrograph and metallographic microscope were used to analyze the chemical composition and internal organization of the materials of casing and drill collar, and then the Rockwell hardness tester was carried out to measure the surface hardness of materials of casing and drill collar.
The heat treatment process of materials of casing and drill collar is quenching and tempering.
Zhu, Models & tests of casing wear in drilling for oil & gas, Journal of natural gas science and engineering, 4(2012)44-47 [2] C.J.

Therefore, stainless steel specifies high requirements for tool materials in aspects of high temperature wear resistance, toughness, and chemical stability of the coating (oxidation resistance).
Workpiece material: stainless steel S17700.
The above test results indicate that the TiAlN coated cutting tool has a good cutting performance when cutting stainless steel, which greatly improves tool life, so it is the ideal tool for the processing of stainless steel, heat-resistant steel and other materials which are difficult to machine.
JA10200) Reference [1] Paldey S，Deevi S C,2003 “Single Layer and Multilayer Wear Resistant Coatings of ( Ti, Al) N: a review[ J] ”，Materials Science and Engineering, vol.342，pp 58- 79
[4] Jindal P C, Santhanam A T, Schleinkofer U, et al,1999,“Performance of PVD TiN, TiCN, and TiAlN Coated Cemented Carbide Tools in Turning [ J] ”，nternational Journal of Refractory Metals and Hard Materials, vol.17,pp163-170

Functionally graded material (FGM) with density gradient has showed great potentials as flier-plate for creating quasi-isentropic compression waves.
The FGM exhibits a gradual compositions change in the thickness direction, reflecting a density gradient within the fabricated material.
Acknowledgements This work is financially supported by the National Natural Science Foundation of China under the grant No. 10574102 and Program for Innovation Team in Hubei Province No. 2008CDA011.
Barker, in: Dynamic Quasi-isentropic Compression of Tungsten, in Shock Waves in Condensed Matter Elsevier Science Publishers B V, New York(1998) [5] G.Q.
Nguyen: submitted to Journal of Applied Physics 102, 023507(2007) Fig.5 The BSE of the Mg-W system FGM and corresponding line distribution images of elements Mg and W in the thickness direction 1m

Experiment procedures The raw materials for Nb5Si3 and Cr2Nb are niobium, silicon and chromium blocks.
Materials Science and Engineering A, 2004, 364: 151–158
Materials Engineering,2005,12:30
Metallurgical and Materials Transactions A, 2002, vol. 10, pp. 625-634
Metallurgical and Materials Transactions A , 1996, vol. 27A, pp. 3801-3808

Load Analyzed of the UGCW Gravity Load Gravity loads include the gravity of the glass panel, the curtain wall frame, the accessory and the material of heat preservation and heat insulation.
Wind Load The glass panel of the UGCW is the material with the large rigidity and the small strain and its relationship of stress-strain is linear before the failure of the material [2, 3].
Guangxi Sciences, 10 (3):208 ～211 [3] C V Girija Vallabhan. 1994.
The Journal of Structural Engineering, 120(5):1663 ～1671 [4] Tong LiPing, Ning YongSheng. 1999.
Journal of ZhengZhou University.31(4):28～31

Test model scale and material property is show in Table 1.
Table 1 Model scale and material property Geometry [mm] Material Property Length 2000 Young’s Modulus 206000 [N/mm2] Diameter 1600 Rib’s scale 10×50 Damping 0.06 Rib’s space 200 Density 7.85E-9 [N/mm3] Base panel 375×200 Cover’s thickness 20 Poisson’s Ratio 0.3 Cylinder’s thickness 6 Fig. 3 Time domain and frequency domain force of white-noise input exciting Fig. 4 Acceleration FRF of steady and noise exciting on Channel Dev1_ai0 Fig. 5 Acceleration FRF of steady and noise exciting on Channel Dev1_ai1 Fig. 6 Acceleration FRF of steady and noise exciting on Channel Dev4_ai1 Fig. 7 Acceleration FRF of steady and noise exciting on Channel Dev4_ai5 Fig. 8 Sound pressure FRF caused by noise exciting force on Channel Dev4_ai7 Fig. 8 shows the acoustic transfer function by the way of white-noise input exciting force.
Zhou: Journal of Ship Mechanics, Vol. 10 (2006), p. 153-159(In Chinese)
Hong: Journal of vibration and shock, Vol. 29 (2010), p. 228-231 (In Chinese)
Yang: The Theory and Technology of Discrete Spectrum Correction (Science Publications, China 2008).

Preparation and Research on Performance of Fluorine Rubber / Metal Composite Sealing Boards Ailing Zhang1, a, Yinfeng Feng1, b, Sanxi Li1,a, Song Wang1,a, Zhenqian Lv2,a 1 School of Science, Shenyang University of Technology, Shenyang, Liaoning, 110870, China 2 Institute of wind energy technology, Shenyang University of Technology, Shenyang, Liaoning, 110023, China a zhangal001@yahoo.com.cn,b yinfeng2003@126.com.
Fluorine rubber/metal composite sealing board is a typical sealing material, It has the mechanical strength and dimensional stability of the metal.
From the SEM we can see that the metal and the rubber did not enter each other's material system.
[3] Yinyanfang, Louxiudong: Guangxi Journal of Light Industry.
[5] M AAnsarifar: International Journal of Adhesion & Adhesive.