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This phenomenon takes place during their pursuit of basic survival and development when their lives with more materials are obtained by advanced science and technology through the process of understanding and reforming the world.
The future situation might be that the continuous usage of these resources by human will result in a low availability on raw materials [3].
European Journal of Political Economy 20, 597–617
Journal of Mountain Science 9, 147–156
Journal of Rural Studies 22, 383–395

[4] Peng W Y and Liao Y S, in: Study of electrochemical discharge machining technology for slicing non-conductive brittle materials.
Journal of Materials Processing Technology, 2004, 149(1-3): 363-369
Journal of Materials Processing Technology, 1998, 76: 161-164
Journal of Materials Processing Technology, 2005, 159: 272-277 [7] Zhu Y W, Xu J W and Zhao J S, in: Study on the shaping law and test of electrochemical contour evolution machining for integral turbine with bigtwisted blades.
Journal of South China University of Technology (Natural Science Edition), 2009, 37(11):140-144.

PCHES that stores the latent heat of fusion of phase change materials is provocative because of its huge storage density.
Phase Change Materials Phase change materials (PCM) are used as promising media of heat energy storage since they have large energy storage capacity.
Erythritol’s thermal science characteristics are given in Table 1.
References [1] S.D.Sharma, H.Kitano and K.Sagara, Phase change materials for low temperature solar thermal applications, Res.Rep.Fac.Eng.
Mauran, Paraffin/porous graphite-matrix composite as a high and constant power thermal storage material, International Journal of Heat and Mass Transfer,2001;44:2727-2737 [5] Francis Agyenim,Neil Hewitt, Philip Eames, Mervyn Smyth, A review of materials, heat transfer and phase change problem formulation for latent heat thermal energy storage systems(LHTESS), Renewable and Sustainable Energy Reviews,2010; 14: 615-628

However, these materials pose health risks and are non-recyclable.
When compared to other materials, recycled paper has similar properties as coir fibre and is quite comparable to other commercial sound absorbers at the same thickness.
Alternative materials were developed in order to replace the shortcomings of mineral fibres.
However, natural fibres such as coir fibre are also suitable as a substitute to synthetic fibres and wood-based materials for acoustic absorption purposes.
Ismail, Acoustic properties of multi-layer coir fibres sound absorption pane, Journal of Applied Sciences. 8, 20, (2008) 3709-3714

Effect of Surface Stress on the Deformation of an Half-Plane Applied to Nanometer Materials Zhiying Ou1*, Jing Guo1 1*School of Science, Lanzhou University of Technology, Lanzhou 730050, P.R.China 1*zhiyingou@163.com, 1gj303346820@126.com Key words: Circular hole; Surface stress; Nano material.
Mura, Inclusion problem, ASME Journal of Applied Mechanics Review, 1988, pp. 15-20
Keer, Interaction between a rigid indenter and a near-surface void or inclusion, Journal of Applied Mechanics. 50 (1993) 615-620
Pharr, An Improved Technique for Determining Hardness and Elastic Modulus Using Load and Displacement Sensing Indentation Experiment, Journal of Materials Research. 7(1992) 1564-1583
Murdoch, A continuum theory of elastic material surfaces, Arch.

Introduction The rare earth polymer luminescent materials have both the high intensity, high color purity properties of rare earth ions, and the excellent processing characteristics of polymer materials, which is a class of potential with a very great application value of fluorescence, laser and magnetic materials[1~8].
Zhang: Polymer Materials Science and Engineering, Vol. 18(2002) No. 1, pp.149-152 [2] Z.Y.
Feng: Journal of Functional Polymers.
Lin: Journal of Functional Polymers.
Materials Chemistry and Physics, 2005, 91: 172-179 [7] B.L.

Introduction Many porous materials, such as filter materials made of sintering metals, lagging materials, fireproof materials and so on, are utilized for various fields.
The authors[5,6] also have dealt with statical problems and dynamical ones of axisymmetrical shells made of porous materials.
And the authors[7,8] also have dealt with dynamical problems of axisymmetrical thin shells made of the multi-layered porous materials and the functionally porous materials.
Gonda et al.: Key Engineering Materials Vols. 407-408(2009), p. 305
Houbolt: Journal of Aeronautical Science Vol. 17, No. 9(1950), p. 540.

This paper briefly describes the relevant properties of epoxy resin materials, and introduces the domestic and international progress of dicyclopentadiene (DCPD) phenolic epoxy resin.
Composed of high-purity materials, especially ionic impurities are very few. 2.
Using phenol and DCPD as raw materials and BF3·Et2O as a catalyst, DCPD phenol resin was synthesized.
Journal of Macromolecular Science Part B, 55(8) (2016)810-821
Journal of Renewable Materials, 2(3) (2016)220-229

This can only be achieved by defining the relationships between structure and properties of materials for MCFC.
Materials and methods Preparation of a slurry is the first and the most important stage in the process of MCFC materials fabrication.
Kurzydlowski, Structure of foams modeled by Laguerre-Voronoi tesselations, Computational Materials Science Vol. 67 (2013), p. 216-221
Redenbach, Microstructure models for cellular materials, Computational Materials Science Vol. 44 (2009), p. 1397-1407
Kurzydlowski, Image based analysis of complex microstructures of engineering materials, International Journal of Applied Mathematics and Computer Science, Vol. 18, No. 1 (2008), p. 33-39

The material had good blood compatibility, and can be used as biomedical materials.
Introduction As long with enhancing awareness and promoting uses of CS/ECOPU composite materials, CS/ECOPU composite materials have received extensive attention, which has brought an unprecedented development to the research of biomaterial community.
Figure 3 showed recalcification time of materials.
Journal of Applied Polymer Science, 2007, 104: 2683～2689 ［ ］2 Wen-Ching Lin, Da-Guang Yu, Ming-Chen Yang.
Journal of Membrane Science, 2006, 276: 68～80