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Raw Materials.
The palygorskite, La2O3 and Ce2(CO3)3 were selected as raw materials to prepare the La-Ce-AttapulgitePalygorskite catalysts by blending method.
Journal of Cleaner Production Vol. 18 (2010), p. 881 [2] Roger Atkinson.
Journal of Environmental Engineerin Vol. 4 (2010), p. 639 [4] SI Zhichun, WENG Duan, WU Xiaodong.
Science & Technology Review Vol. 27 (2009), p. 87 [5] N.

Most studies of nanocomposites have involved clays as an inorganic reinforcing material due to large aspect ratio and considerable ion exchange capacity [4].
Experimental Materials ε-Caprolactone (ε-CL, 99.9%, Acros Organics) was dried over CaH2 by stirring and distilled under reduced pressure prior to use.
A Mg/Al layer double hydroxides (LDH) with the formula Mg0.66Al0.34(OH)2(CO3)0.17·0.67H2O, was kindly supplied by Dalian Fumeida New Materials Co., Ltd (China).
Journal of Colloid and Interface Science, Vol.349, 127-133(2010) [5] Zhe Yang, Hongdan Peng.
Journal of Applied Polymer Science, Vol.116, 2658-2667(2010) [6] F.

In the numerical simulation, a coupled solver is used; fluid material is supposed to be ideal gas; momentum is in the form of second-order upwind discretized mode; pressure and velocity coupling uses the SIMPLE algorithm and airfoil surface is the no-slip, adiabatic wall boundary.
The structure material parameters are showed in Tab.1.
Grid discretization ( whole domain) Figure.3 Structure of the airfoil Figure.4 Mpcci interface definitions Table.1 Structure Material Parameters Density(kg/ m3)) Young’s Modulus (N/m2) Poisson’s Ratio Thickness(mm) 7.89E+03 2.09E+11 0.269 2 Discussion of Simulation Results Fig.6 shows the lift-coefficient of the seagull airfoil under Re=600000.
References [1] Wu Qiang, Huang Wenxin, Hu Yuwen: Design of low-voltage cage induction generator driven directly by wind power, journal of electric power science and technology,(2009)9 [2] Rui Gu, Jinglei Xu, and Yongbo Yang: The investigation of the small bionic wind turbine based on the seagull airfoil, Advanced Materials Research Vols. 347-353 (2012) p 3533-3539 [3] Tianshu Liu,K.uykendoll, R.Rhew,S.Jones : Avian Wings.AIAA 2004-2186 [4] Franck Bertagmolio, Niels Sorensen: Wind turbine airfoil catalogue, Pitney management services Danmark A/S.(2001) [5] Hong-li Li，Design and Investigation of Aerodynamic Performance of dedicated Airfoil Families for Horizontal-Axis Wind Turbines,Graduate School of Chinese Academy of Sciences ,(2009).5 [6] MUELLER T.J.
The Influence of Laminar Separation and Transition on Low Reynold Number Airfoil Hysteresis,Journal of Aircraft,vol22,(1985),p.764-770 [7] EBERT P R,WOOD D H.

Kimoto, Step-controlled epitaxial growth of SiC: High quality homoepitaxy, Materials Science and Engineering, R20 (1997), 125–166
La Via, Heteroepitaxy of -SiC on different on-axis oriented silicon substrates, Journal of Applied Physics 105, (2009), 084910
Cordier, Role of Substrate Misorientation in Relaxation of 3C-SiC Layers on Silicon, Materials Science Forum, 169, (2009), 615-617
Jiang, Evaluation of curvature and stress in 3C-SiC grown on differently oriented Si substrates, Materials Science Forum, 137, (2011), 679-680
Materials Science Forum, 645-648, (2010), 255-258

However, the method assumes that the contact periphery sinks in, which limits the applicability to the materials pile-up [1].
The applicability of O&P method, developed from a purely elastic contact mechanics (sink-in) is limited by the materials pile-up.
In general, pile-up is greatest in materials with low value of Rp / E and little or no capacity for work hardening, that is, “soft” metals that have been cold worked prior to indentation.
Raj, Finite element analysis of spherical indentation to study pile-up/sink-in phenomena in steels and experimental validation, International Journal of Mechanical Sciences 54 (2012) 74–83
Yu, Investigation on methods for dealing with pile-up errors in evaluating the mechanical properties of thin metal films at sub-micron scale on hard substrates by nanoindentation technique, Materials Science and Engineering A 488 (2008) 318–332.

Stranik: Materials Science and Technology, Vol. 17 (2001), pp 1324-1328
W: Journal of Materials Processing Technology, Vol. 100 (2000), pp.116–22
Panigrahi: Materials Science Forum, Vols. 584-586 (2008), pp 734-740
Jayaganthan: Materials Science and Engineering A, Vol. 480 (2008) pp. 299–305
Prangnell: Materials Science and Engineering A, Vol. 328 (2002), pp.87-97.

Materials and methods Plant materials The fresh, pesticide-free stems and leaves of A. julibrissin were collected from mature trees located in Minhang District of Shanghai Jiao Tong University, Shanghai, China, on July 2010.
The collected material was dried in an oven at 40 °C [10].
Journal of Shanghai Jiaotong University (Agricultural Science). 2006, 24(1), pp. 48-53
Preventive Effect of 20 Plant Extracts against Cucumber Downy Mildew, journal of Shanghai jiaotong university (agricultural, science), 2005,23(3), pp. 308-311
Fujian Journal of Agricultural Sciences, 2004, 19(2), pp. 78-81.

Département Génie des Procédés, Faculté des Sciences et de la Technologie, Abdelhamid Ibn Badis University, Bp 227 Mostaganem, Algeria. 2Mohamed Boudiaf Sciences and Technology University, 31000 Oran, Algeria. 3Riga Technical University, Faculty of Civil Engineering, Department of Water Science and Technology, Azenes 16/20-263, Riga, LV-1048, Latvia anora.noureddine27@gmail.com, bsamia.benhammadi27@gmail.com, ckarafouad@yahoo.fr, dhakim.aguedal@gmail.com, eiddouabdelkader@yahoo.fr, ftalis.juhna@rtu.lv Keywords: Pseudomonas aeruginosa, hexavalent chromium, culture broth, enzymatic reduction Abstract.
The research of new biological materials less expensive and available has been carried out [7].
Materials and methods.
Pittman Jr, Activated carbons and low cost adsorbents for remediation of tri-and hexavalent chromium from water, Journal of Hazardous Materials, 137 (2006) 762-811
Moawad, Biosorption of heavy metals from waste water using Pseudomonas sp, Electronic Journal of Biotechnology. 7 (2004) 38-46

Acknowledgements This work was financially supported by National Natural Science Foundation of China (51108231).
References [1] Yihuo Zhang: Jiang huai Water Resources Science and Technology, Vol. 4(2007), p. 14-15
[3] Serrano A:International Journal of Rock Mechanics and Mining Sciences, Vol. 31(1994), p. 93-106
[10] Yunjin Hu,Baoyu Su,Meili Zha: Journal of Hohai University,Vol. 28(2000), p. 40-45
[12] Yunjin Hu:Chinese Journal of Rock Mechanics and Engineering, Vol. 21 (2002), p. 373-375.

Li Jun et al. [6] put forward that the ideal material property of cement sheath is high strength and low stiffness.
Canadian Geotechnical Journal, 1999, 36(1):21-38
Journal of Petroleum, 2005, 26 (6): 99-103
Journal of Rock Mechanics and Engineering, 1994, 13 (2): 160-167
Journal of Petroleum Science and Engineering, 2018,170:1-13