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However, as their mechanical properties are not good enough for load bearing applications, some reinforcement materials such as titania were used as additives in the studies both with HA and Bioglass® 45S5.
Vallet-Regí, Hydroxyapatite/SiO2–CaO–P2O5 glass materials: In vitro bioactivity and biocompatibility, Acta Biomaterialia (2006) 331–342, 2 [3] Buddy D.
Lemons (ed.), Biomaterials Science: An Introduction to Materials in Medicine, Second Ed., Elsevier Inc., California, USA, 2004
Takadama, Titania-based bioactive materials, Journal of the European Ceramic Society 27 (2007) 1553–1558
Boccaccini, Fabrication and characterization of porous bioceramic composites based on hydroxyapatite and titania, Materials Chemistry and Physics 103 (2007), 95–100

Most of these materials, especially high volume fraction SiCP/Al composites, are known as difficult-to-machine materials because of the hardness and abrasive nature of reinforcement particles [3].
Due to the presence of SiC reinforced particles, the cutting process of high volume fraction SiCP/Al composites is different from brittle materials or plastic materials.
Sklad: Materials Processing Technology, Vol.101(2000), p.10 [6] N.
Beffort et al: Composites Science and Technology, Vol.67(2007), p.737 [8] Y.F.
Bhattacharayya: Journal of Materials Processiing Technology, Vol.140 (2003), p.711

Materials The composition of studied mixtures can be seen in Table 1.
Material composition.
Černý, High performance concrete containing lower slag amount: A complex view of mechanical and durability properties, Construction and Building Materials 29(6) (2009) 2237-2245
[7] ČSN 72 7031: Determination of water vapour diffusion coefficient of building materials by method without temperature gradient, 2001
Černý, Interlaboratory comparison of hygric properties of porous building materials, Journal of thermal envelope and building science 27 (2004) 307–25.

(Beijing: University of Science & Technology Beijing, China 2007),in Chinese
Explosion compound and mental compound materials.
Study on low detonation velocity expanded ammonium nitrate explosives and its safe property. explosives materials,Vol.31(2002),p:1-4,in Chinese
Chinese journal energetic materials, Vol.17(2009),p:326-327,in Chinese
Chinese journal of energetic materials, Vol.18(2010),p:222-225,in Chinese

The chemical composition of the geopolymeric materials is similar to natural zeolitic materials, but the microstructure is amorphous.
EXPERIMENTAL METHOD Raw Materials.The raw materials used to prepare (Class F) fly ash-based geopolymers are based on fly ash, and an alkaline activator mixture of sodium silicate (waterglass) with 15M sodium hydroxide solution (NaOH).
[6] Barbosa VF, Mackenzie KJ ,Thaumaturgo C., “Synthesis And Characterisation Of Materials Based On Inorganic Polymers Of Alumina And Silica : Sodium Polysialate Polymers,” Int J Inorg polym. vol.2, pp. 309-17, 2000
T, “Geopolymeric materials prepared using Class F fly ash and elevated temperature curing,” Cement & Concrete Research, vol. 25(6), pp. 1224-1232, 2005
[22] Zuhua Z., Xiao Y., Huajun Z., Yue C., “Role Of Water In The Synthesis Of Calcined Kaolin-Based Geopolymer,” Journal of Clay Science. 2008.

Chang, Economic and policy instrument analyses in support of the scrap tire recycling program in Taiwan, Journal of Environmental Management, 86 (2008) 435-450
Clark, Cement-based materials containing shredded scrap truck tire rubber, Construction and Building Materials, 10 (1996) 229-236
Senouci, Rubber-tire particles as concrete aggregate, Journal Material Civil Engineering, 5 (1993) 478-496
Singh, Effect of polyacrylamide on the different properties of cement and mortar, Materials Science & Engineering A, 392 (2005) 42-50
Xu, Micromechanical analysis of polyacrylamide-modified concrete for improving strengths, Materials Science & Engineering A, 490 (2008) 181-192.

ASME Journal of Energy Resources Technology, 103(1): 11–15
Journal of Offshore Mechanics and Arctic Engineering, 110(3):197-204
Oil & Gas Science and Technology – Rev.
Journal of Strain Analysis, 36(3):265-275
Journal of Applied Mathematics, Article ID 983819, 29 pages.

Dynamic Characteristics of Rotor-Bearing System with a Labyrinth Seal Shiuh-Hwa Shyu1,a, Yu-Wei Chen2,b 1Graduate School of Opto-Mechatronics and Materials, WuFeng University 2Department of Mechanical Engineering, National Chung Cheng University E-mail: asshyu@wfu.edu.tw, bywc0314@gmail.com Keywords: Dynamic Characteristics, Rotor-Bearing System, Labyrinth Seal, Finite Element Method Abstract.
Vermes: ASME Journal of Engineering for Power Vol.83 (1961), p.161
Scharrer: ASME Journal of Tribology Vol.111 (1988), p. 101
Ha: Journal of Mechanical Science and Technology Vol.15 (2001), p.1217
Nelson: ASME Journal of Mechanical Design Vol. 102 (1980), p.793

Green product is a product that incorporates the strategies in recycling or with recycled content, reduced packing or using less toxic materials to reduce impact on the natural environment. [3] Environmental Concern Moloney et al. [4] refers environmental concern as behavioural changes according to the level of emotionality, degree of knowledge and readiness.
Management Science and Engineering, 4(2), 27-39
British Food Journal, 111(10), 1140-1167
Journal of Business Ethics, 46, 45–59
International Journal Business, 7, 40-54

Ben-Nissan 1 1 Department of Chemistry Materials and Forensic Science, 2 Department of Medical and Molecular Biosciences, University of Technology Sydney, PO Box 123 Broadway NSW 2007 Australia a Kanthi.Lewis@uts.edu.au Keywords: bone, sol-gel, hyroxyapatite, zirconia, nanocoatings, osteoblast Abstract.
When producing implant materials, achievement of optimal bioactivity and biocompatibility are essential.
Materials and Methods Preparation and Characterisation of Coated Surfaces.
Key Engineering Materials, 2005. 284-246: p. 541-554
LeGeros, Progress in Crystal Growth and Characterization of Materials, 4, p1-45