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Journal of Biomedical Materials Research Part A, Vol 95A, No. 3(2010), p.828-836 [5] Liu S.
Journal of Biomaterials Science-Polymer Edition, Vol 22, No.7(2011), p.945-955 [6] Chang S.
Journal of Biomedical Materials Research Part A, Vol 95A, No. 1(2010), p.276-282 [9] Panzavolta S., Gioffrè M., Focarete M.
Journal of Materials Science: Materials in Medicine, Vol 19, No.1(2008), p.95-102 [11] Zhao Y.
Journal of South China University of Technology(Natural Science Edition) , Vol 36, No.11(2008), p.157-161 [12] C.

Ever increasingly numerous evidence shows that this materials science revolution can generate significant health, safety and environmental hazards, in addition to the social, economic and ethical challenges involvedBased on the precautionary principle recommended be the European Union and a thorough literature review, this research is intended to introduce a framework for further development of an Occupational Health and Safety risk management foundation in this field of concern.
Introduction Nanotechnologies are integrating knowledge and experience from physicists, chemists, and biologists, specialists in materials science, electrical and mechanical engineers, and medical and cognitive researchers.
Workers in nanotechnology may be exposed to new properties of materials and products that have health effects which are not yet fully explored [2, 3].
The synthesis and production of such new materials raises many questions and raises issues - or even concern - because of the incomplete and fragmentary knowledge level of health and safety risks associated with nanoparticles and nanotechnology.
Kuempel, Airborne nanostructured particles and occupational health, Journal of Nanoparticle Research, 7, 587-614 (2005) [11] C.M.

Experiments Materials CYD-127 epoxy resin was supplied by Yueyang Petro-Chemical Company, and the curing agent WK6821, modified polyethylene polyamine, was purchased from Wells King Company.
Woldesenbet, Microballoon wall thickness effects on properties of syntactic foams, Journal of Cellular Plastics. 6(2004) 461-480
Part 1: Microscopic characterization of the failure zones, Journal of Applied Polymer Science. 2(2005) 673-679
Sankaran, Effects of microballoons’ size and content in epoxy on compressive strength and modulus, Journal of Materials Science. 22(2006) 7459-7465
Gupta, Effect of polydispersivity and porosity on the elastic properties of hollow particle filled composites, Mechanics of Materials. 7(2010) 726-739

Therefore ,we take this as our starting point and try to examine the possibility of using MSTP sludge incineration ash (MSA) as an additional component in construction materials and as an admixture to cement-based materials in this particular case.
Materials and Methods Materials.
Reid, Compressive strength of municipal sludge ash mortars, ACI Materials Journal 1989; 86 (4): 394–400
Technological and environmental behavior of sewage sludge ash (SSA) in cement-based materials.
Journal of Nuclear Materials 2008; 381(3): 271-7.

The present study shows that the minor addition of rare earth affected the properties of aluminum alloy in various ways.On the one hand,it can refine grains, plays the role of fine-grain strengthening,that can improve the strength of materials but not reduce the ductility of materials[7].On the other hand,it can improve the electrical conductivity of aluminum alloy[8].
Rare Metal Materials And Engineering,2010 [2] Zou Liang, Pan Qing-lin, He Yun-bin,Wang Chang-zhen,,Liang Wen-jie.Effect of Minor Sc and Zr Addition on Microstructures and Mechanical Properties of Al-Zn-Mg-Cu Alloys[J].
Journal of Alloys and Compounds,2011 [4] Yang Junjun,Nie Zuoren,Fu Jingbo,Zuo Tieyong.Effect of Rare Earths on Aluminum Alloys and Its Research[J].Journal of Beijing Polytechnic University,2002 [5] Zhao Ping, Chen Yungui,Tang Dingxiang,Tu Mingjing.
Chinese Rare Earths,2002 [6] Hu Gengxiang,Cai Xun.Foundation of Material Science[M].
Metallic Functional Materials,2010

Because Solid65 element was designed for concrete, rocks and other non-uniform materials whose compressive strength are higher than tensile strength.
Solid65 element can define 3 different reinforced materials at most, it have four different materials at the same time.
Journal of Tsinghua University(Science and Technology), vol. 36, pp. 84–89.(1996)
Journal of Hydraulic Engineering, vol.
Science Technology and Engneering, vol. 10, pp. 3272-3275.(2010).

Terentev, On the problem of the fatigue limit of metallic materials, Metal Science and Heat Treatment 46 (5-6) (2004) 244-249
Rochel, New possibilities of applications aluminum alloys in transport, Archives of Metallurgy and Materials 54 (4) (2009) 1199-1207
Dybowski, Vacuum carburizing-process optimization, Journal of Materials Processing Technology 164-165 (2005) 876-881
Pawlak, Increasing the durability of pressure dies by modern surface treatment methods, Chiang Mai Journal of Science 40 (5) (2013) 886–897
Kula, Synergistic effects of thermo-chemical treatment and super abrasive grinding in gears' manufacturing, Journal of Materials Processing Technology 159 (2) (2005) 249-256

At present, there are two mainly kinds of ceramic core matrix materials widely used at home and abroad: silica glass and fused corundum.
Experimental procedures The raw materials used in this experiment are corundum, and yttria.
Materials Science and Engineering A. 2009, 508(1-2): 71–75
Materials Science and Technology. 2011, 27(4): 823-828
Journal of Materials Science Letters. 1993, 20(12): 1570-1573

Mohd Salleh1,b and Zainal Ariffin Ahmad2 1Nihon Superior Electronic Materials Research Lab, Centre of Excellence Geopolymer & Green Technology, School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), Perlis, Malaysia. 2School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia (USM), Penang, Malaysia ahafizhazizi@unimap.edu.my, barifanuar@unimap.edu.my Keywords: Powder Metallurgy, Lead-free Solder, Sn-0.7Cu, Silicon Nitride, Composite.
References [1] Mohd Salleh, M.A.A., et al., Wettability, Electrical and Mechanical Properties of 99.3Sn-0.7Cu/Si3N4 Novel Lead-free NanocompositeSolder.Advanced Materials Research, 2011.277(1): p. 106-111
Materials Science and Engineering: A, 2006. 423(1-2): p. 166-169
Journal of Materials Engineering and Performance, 2010. 19(3): p. 335-341
Journal of Electronic Materials, 2009. 39(2): p. 215-222

Materials and equipment In the experimental determinations there have been used real particles which form are differs from the ideal shape; respectively small grain beans particles (particles with an elongated shape) [1].
Bănică, A computer model for sieves vibrations analysis, using an algorithm based on the false-position method, American Journal of Applied Sciences 5:12 (2008) 48-56
Tong, Particle stratification and penetration of a linear vibrating screen by the discrete element method, International Journal of Mining of Science and Technology 22 (2012) 357-362
[10] Ai-min LI et al., A virtual test of screening technology based on the AGEIA PhysX, International Journal of Mining of Science and Technology 18 (2008) 300-304
[21] Soldinger M., Transport velocity of a crushed rock material bed on a screen, Minerals Engineering 15:1–2 (2002) 7–17.