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This phenomenon occurs due to the shifting of the burning region toward regions 2-6 due to accumulation of fissile materials during 10 years of operation.
It is shown that for about 50 years of life the accumulation of fissile material is more dominant than burning process.
Sekimoto, et al. : Nuclear Science and Engineering Vol 139 (2001), p. 1-12 [5] Y.
[6] Rida SNM and Zaki Su’ud: International Journal of Nuclear Energy Science and Technology Vol. 4 No. 3 (2009),p.217-222 [7] Zaki Su’ud and H.
Journal of Energy Science and Technology (IJNEST), Vol 5, No. 4 (2010), p.347-368 [8] OKUMURA, K., Teruhiko KUGO, Kunio KANEKO and Keichiro TSUCHIHASHI: SRAC (Ver.2002) ;The comprehensive neutronics calculation code system’, JAERI Report, 2002 [9] Z.

Current practice of producing components from the mixture of more than one materials or multi-materials is either through foundry process or through mechanical alloying.
The nature and properties of engineering materials.
On the combined effect of lubrication and compaction temperature on properties of iron-based P/M parts, Materials Science and Engineering A 437 (2008) 360-365
Park, Review: liquid phase sintering, Journal of Materials Science 44 (2009) 1-39
Journal of Refractory Metals & Hard Materials 27 (2009) 862-867

Journal of Wuhan University of Technology (Materials Science Edition), vol. 29, no. 3, p. 578-584, 2014
Rare Metal Materials and Engineering, vol. 42, no. 2, p. 301-303, 2013
Rare Metal Materials and Engineering, vol. 42, no. 7, p. 1407-1410, 2013
Materials Science Engineering A, p. 271-322, 1999
Metallurgical and Materials Transaction A, vol. 41, p. 2290-2303, 2010

Meanwhile, the excellent electric insulation of UHMWPE fiber limited its employment in many fields such as antistatic material, electromagnetic shielding materials and electronic engineering.
Since the high conductivity of Polyaniline was found, wide attention was received for its low price of raw materials, simple synthesis, high conductivity, good stability in air and the unique doping phenomenon[1].
Now Polyaniline was widely used in anti-static, electromagnetic shielding, sensors, electro-chromic materials, microelectronic industry and chemical industry etc[2].
Materials and methods Experimental materials.
Liu, G.M.Wu, W.H.Ma, Preparation and properties of the conductive composite fiber from polyaniline and PET fiber with sodium van date as oxidant, Polymer Materials science and Engineering. 13(1997),p71-72

Therefore, they are good potential microwave absorption materials.
However, the permeability of the metallic materials will decease in the high frequency due to the eddy current effect.
To overcome this problem, smaller particles isolated by insulating materials can be used for microwave absorbers [3, 4].
These composites can be promising candidates for electromagnetic wave absorption materials.
Karimzadeh: Journal of Materials Science, 43 (2008) 132-138

Many reasons can be cited for the necessity to research into model materials.
Third, the tensile strength of the model materials must be as small as possible to enable final failure of the models to occur within the nominal power of the shaking table.
The strengths of the model materials were tested by the standard procedure of indirect tension using a four-point beam test.
Ghaemian: ASCE Journal of Engineering Mechanics Vol. 124 (1998), p 1241 [2] D.W.
Williams: ASCE Journal of Structural Engineering Vol. 126 (2000), p 926.

Fakirov c Centre for Advanced Composite Materials, Department of Mechanical Engineering, The University of Auckland, Private Bag 92019, Auckland, New Zealand a d.bhattacharyya@auckland.ac.nz, brshi018@ec.auckland.ac.nz, cs.fakirov@auckland.ac.nz Keywords: microfibril, polymer, extrusion, oxygen permeability.
MFCs have several potential applications in a range of areas including food packaging materials and biomedical scaffolds.
Experimental Details Materials.
Fakirov: Oxygen permeability analysis of microfibril reinforced composites from PE/PET blends, Composites Part A: Applied Science and Manufacturing.
J., Bhattacharyya, D., Fakirov, S., Fibrillar polymer-polymer composites: morphology, properties and applications, Journal of Materials Science.

Most of the solid materials have Acoustic emission when in plastic deformation and fracture.
But the acoustic emission signal strength of many materials is so weak that human can't hear directly.
In 1959, Spooner found that concrete materials such as before to unload and reload to historical maximum strain, basic silent emission signal, namely with the Kaiser effect.
Liu and M.X.Jin: Materials Review, Vol. 25(2014) No.
Yang: Journal of China & Foreign Highway, Vol. 1(2014) No.03. pp: 221-226.

Investigation on applying steel slag to cementbased materials.
A study of engineering properties of cement mortar with stainless steel oxidizing slag and reducing slag resource materials.
Construction and Building Materials, 2013. 40: 239-245
Construction and Building Materials. 2013, 47: 1414-1420
Journal of Beijing University of Chemical Technology (Natural Science). 2015(01): 62-68

Due to this morphological characteristic, in general, nanocrystalline materials are far away from thermodynamic equilibrium and as a result reveal quite different properties in comparison with conventional coarse-grained materials [2, 3].
In ferromagnetic materials, magnetic properties can be significantly modified by reducing grain size to nanometer scale [9].
In these nanocrystalline materials, therefore, grain growth can occur at relatively lower temperatures than in counterpart microcrystalline materials [12].
Acknowledgment This research was supported by a grant from the Center for Advanced Materials Processing (CAMP) of the 21st Century Frontier R&D Program funded by the Ministry of Science and Technology, Korea.
Gleiter: Progress in Materials Science Vol. 33 (1989), p. 223