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This paper focuses on the variations of static and dynamic properties of tungsten heavy alloy with heat treatment.
Introduction Tungsten heavy alloys consist of strong tungsten particles and ductile matrix phases so that they are useful for the components requiring high densities and mechanical properties, such as counter weight balance, radiation shield and kinetic energy projectile.
Due to composite structure, mechanical properties of tungsten heavy alloys are strongly dependent upon the various factors, especially, impurity level, relative amount and morphology of phase boundaries so-called W/W and W/matrix interfaces.
Since heat treatment is one of the most effective ways to modify those factors, many investigations [1-7] have been focused on improving mechanical properties by heat treatment.
Compared to intensive researches on W/matrix interfaces, there are only a few investigations [8-9] on the relationship between heat treatment and W/W grain boundaries, which affects eventually mechanical properties.

Microstructure and material composition have the greatest influence on the physical and mechanical properties of the boards.
Hygrothermal properties are most affected by inhomogeneity and hygroscopicity [2].
However, the amount of moisture contained in the material always has a significant effect on the final properties of the board material, not only on the hygrothermal properties, but also on the physical and mechanical properties.
Determination of diffusion properties.
The values of diffusion resistance factors are also tabulated in the standard EN ISO 10456 [11] and the measured values correspond to those stated in this standard.

Introduction Chemical mechanical polishing plays an important role in the precision and ultra precision processing technology.
Many scholars have made a lot of research work about the various factors which affect the processing quality.
Content includes: Basic information description library: the basic attributes material processed by CMP, such as type, hardness, melting point; a variety of grains’ basic properties ,such as hardness, melting point; Technological parameter library: the involved process parameters in CMP, such as polishing pressure, polishing speed, the properties of polishing pad material; different composition formula of polishing slurry; different grit size and composition formula.
The method of layering stratifies chemical property and the physical properties of the material respectively.
[4] Chi Xu: Study on the Friction-based Endpoint Detection in Chemical Mechanical Polishing.

With perfect mechanical property and excellent resistance to corrosion and environment degradation, Carbon fiber reinforced composite is widely used in the strengthening of metallic structures.
There are many factors that may affect the improvement of the load carrying capacity of steel structures strengthened with CFRP, such as the elastic modulus and cross section of CFRP and steel elements, the bond property between CFRP and steel elements, the type of load that the strengthened beam suffers to.
Deng [9] investigated the influence of various factors on the strength of the metallic beams reinforced with a bonded CFRP plate.
These factors include the types of CFRP plates, the tapers at the plate ends and the spew fillets of adhesive beyond the plate ends.
(3) According to the material properties of Deng [9], Linghoff [3], Colombi [8], one can compute that k is between 2.42% and 5.60%, which means the increment of the elastic load carrying capacity was insignificant.

The Research on The Structure Parameters To Deformation of The 150 Diesel Engine Cylinder Under Thermo-mechanical Coupling LI Kun 1a，SU Tie-xiong 1b, You Guo-dong1 ， Xu Lu1 , Li Xiao-jie 1 1 Institute of Mechanical and Electrical Engineering, North University of China, Taiyuan 030051 a fendou1981@tom.com, b sutiexiong@nuc.edu.cn Keywords: Internal combustion engine; Cylinder liner; Deformation; Thermo-mechanical Coupling.
Using a series of evaluation criteria such as maximum, minimum radius, light leakage rate to analyze the influence of the main structural parameters on the cylinder liner deformation in the coupling effect of Thermal stress and mechanical stress.
Introduction The internal combustion engine combustion chamber are formed by the cylinder head, piston, cylinder liner and piston rings .The deformation of the cylinder liner could damage the piston rings seal , and this further affects the engine's economy, power and emissions characteristics[1-5].The control of the cylinder liner’s deformation can reduced radial clearance between piston and cylinder bore, which can reduce the impact of the piston on the cylinder liner and reduce the vibration and noise of the engine[6] .Taking the 12V150 diesel engine cylinder liner as the research object ,the paper researched the mechanism of the structural parameters to deformation of the cylinder using the finite element method in order to achieve in controlling the working engine’s deformation in the design phase and to provide a theoretical basis for further controlling the deformation of the cylinder liner. 1.
Each factor chooses three levels on the main reference for the design range of the engine and combining with the expectations of proper conduct of the optimal expansion.
Effect of liner surface properties on wear and friction in a non－firing engine simulator[J].ELSEVIER TECHNICAL PAPER SERIES 2006- 1632-640

This finding indicates that the anisotropic orientation and/or migration of osteoblasts guided by the grooved-pore surface affected the establishment of the anisotropic microstructure of bone tissue.
Introduction Regarding bone implants, there is a need to enhance both the bone mass and bone quality of bone tissues newly formed around and inside implants for the mechanical improvement of bone-implant systems.
As a bone quality parameter, the preferred orientation of the biological apatite (BAp) c-axis was studied [1,2] because of its anisotropic nature regarding its mechanical properties [3].
This indicates that the anisotropic pore orientation and/or migration direction of osteoblasts guided by the pore surface affected the establishment of the anisotropic microstructure of bone tissue.
Finally, the microstructural findings obtained in this study can be useful to appropriately design biomaterials including orthopedic implants for reconstructing bone tissue with microstructures and properties similar to those of the intact bone [4].

There are several known factors that influence the migration of grain boundaries such as second phase particles precipitated in the matrix and the solute elements segregated at grain boundaries.
Thus, due to its major influence on final microstructure and, therefore, on mechanical, electrical, and magnetical properties, the accurate experimental determination and theoretical prediction of the prior austenite grain size (PAGS) of materials becomes of the greatest importance in metallurgical studies [1-3].
The influence of these elements is shown by the way they delay the grain growth process and also the phase transformations, during subsequent cooling, affecting Ar3 temperature [5].
Therefore, their influence leads to fine-grained microstructures with improved mechanical properties.
The value of β depends on factors such as the geometry of particles and austenite grains, or coherency between particle and matrix. 0 20 40 60 80 100 120 140 0 5 10 15 20 Energy, Kev cps, Arbitrary Units Nb Nb Nb Cu C Cu N Fig. 3.

Results show that 25nm CeF3 nanoparticles are spherical and cylindrical in appearance, which display extremely good pressure and friction-reducing properties.
The anti-pressure and anti-friction properties (PB value)have been increased by 85.3% while the coefficient of friction has been reduced by over 25%.
These variations are manifested by factors such as temperature, pressure, lubricant molecular mass and molecular structure.
Therefore, nanoparticle content is one of the determining factors affecting heatconduction.
Guoxu, "Tribological Properties of CeF3 Nanoparticles as Additives in Lubricating Oils," WEAR, Wt.230, p.35-38, 1999

For binary alloys, the mechanical and processing properties of iron aluminides depend on aluminium amount significantly.
The properties of alloys (mechanical properties, corrosion resistance, magnetic properties, etc.) are influenced by the presence of phases significantly.
Compared with the as-cast alloys, the enhancement of mechanical properties at room temperature was described after heat treatment.
On the other hand, coarse particles on the grain boundaries in connection with narrow precipitates-free band (formed due to the transition of alloying elements from matrix into coarse carbide particles) along these coarse carbides could affect mechanical properties negatively.
The fine dispersion of carbides precipitates inside the grain could also affect other mechanical properties of the alloy significantly.

Mobile Communication Inter-symbol Crosstalk Cancellation based on Calman Digital Equalizer Filter Lihua Sun 1,a , Cuicui Huang 1, b, Liangjun Yu 1,c 1 Institute of Mechanical and Electronic Information, Wuhan University of Engineering Science ,430200, Wuhan, China a suniseeyou@qq.com, b cicy.h@foxmail.com, c yuliangjun1984@sohu.com Keywords: Calman, Digital equalizer, Filter, Mobile communication, Inter-symbol interference, MATLAB software.
In the digital mobile communication signal transmission system, the inter-symbol interference is one of the main factors affecting the performance.
Introduction The rapid development of science, technology and society makes the application of mobile communication system more and more widely, so the requirement of the communication system performance is more and more high, including the better quality of the output waveform, lower total harmonic distortion, high input power factor, fast dynamic response and high efficiency etc..
(2) According to the property of Fu Liye transform, n order derivative of should meet: