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In this work, properties of tricalcium phosphate (TCP)-tetracalcium phosphate (TTCP)-dicalcium phosphate dehydrate (DCPD) bone cement containing dense TCP granules were studied. 5 groups of cement were prepared with respect to the blending ratio between granular and powdery TCP.
However, the mechanical properties need to be improved.
It is well known that the particle size and the activity of the starting materials are critical parameter influencing the mechanical properties (setting time and compressive strength) of hydraulic cements [1].
Addition of granules in calcium phosphate cement affects on powder to liquid ratio (P/L).
The study has shown the two important factors in synthesizing self-setting cements with superior strength when introducing TCP granules.

Introduction Aluminium is becoming a key material in several industrial applications, i.e. automotive and aeronautical industry, heat exchangers and ship building [1-3], due to its excellent physical and mechanical properties as well as its outstanding corrosion resistance [4-7].
As engineering applications concern, wear resistance, ductile property, residual stress are also essentials [17, 18].
deposition time, current density and the liquid agitation on the coating properties  of aluminium have been experimentally investigated in [19].
The agitation affects the quality of the coating of the external surface.
Frankel, Pitting Corrosion of Metals- A Review of the Critical Factors J.

Fig. 1 3D Finite element model of laser remelting Material properties and phase change treatment.Materials non-linearity has great effect on analysis result, so temperature-dependent thermophysical properties must be considered in simulation.
In this paper, the thermophysical properties parameters of substrate (Ti6Al4V) was from references [8-10], whereas Ni60A powder and WC powder’s were from references [11,12].
The thermophysical properties parameters of mixed-powder in coating are calculated by law of mixtures.
So it need multiply a proportional control factor to reduce in simulation, obviously its value is 0.96 in this paper.
Phase change latent heat is not a neglected factor for the temperature field of metal materials.

The accessibility of these structures and their stability under load are found to be the key factors governing the morphological evolution of the gold nanosheets.
References [1] Yongping Zheng, Ning Wei, Zheyong Fan, Lanqing Xu, Zhigao Huang, “Mechanical properties of grafold: a demonstration of strengthened grapheme”, Nanotechnology, 22(2011) 479-501
[11] Shih-Kai Chien , Yue-Tzu Yang, Cha'o-Kuang Chen, “A molecular dynamics study of the mechanical properties of graphene nano ribbon embedded gold composites”, Nanoscale, 3(2011) 4307-4313
(b) E Katz, I Willner, Angew, “Integrated Nanoparticle Biomolecule Hybrid Systems: Synthesis, Properties, and Applications”, Chem., Int.
[23] L Boldrin, F Scarpa, R Chowdhury, S Adhikari, “Effective mechanical properties of hexagonal boron nitride nanosheets”, Nanotechnology, 22(2011) 505702

First, the porogen should produce large pores to assure good flow-through properties of the resultant MIP.
As shown in Fig.3, with the increase of γ-MAPS, the pore size became smaller and the flow-through property diminished slowly, which could further affect the selectivity of the capillary monolithic column.
For MIP monolith column, the separation factors (α = kcarbaryl/kanalogs) were kcarbaryl/kfenobucarb 5.96 and kcarbaryl/kmetolcarb 4.62, respectively.
The RSD values of the separation factors were smaller than 5.1%.
The RSD values of the migration times and separation factors were not higher than 4.5% and 10.3%, respectively.

The sliding friction between the ring-like electric cable guider with round steel structure and the cable can wear down the electric cable very seriously and affect the electric cable’s service life. 2.
The opening angle of the spindle shaped block is the key factor that affects the performance result of the slide block.
The abrasion in the screw drive is related to such factors as the contact stress on the working surface, the sliding speed, the contact surface roughness and the lubrication status, among which the most important factor is the contact stress on the working surface, for too big contact stress can bring about excessive abrasion.
High molecular material should be adopted to manufacture the spindle shapedblock to ensure favorable physical properties, abrasive resistance and self lubricity to make it more able to meet work demand.
Acknowledgements: This work was supported by the Liaoning Science&Technology Project (Project No.2011220037) References [1] Zongze Wu:Mechanical Design,Higher Education Press.(2001),p273 [2]Shanping Wang:Design for the improvement of the Automatic Cable Arrangement Devices for Underground Electric Power Engineering,Journal of Qingdao Technological University.Vol5, (2010),p87 [3]Dingqi Ye:Application of the Cable Arrangement Devices on Cable Winches.

These materials exhibit mechanical and physical properties, which are out of the ordinary and of great interest, in particular their remarkable strength and toughness and their potential for superplasticity at low temperatures [e.g. 1-3].
A respectable amount of works [4-7] has also been focused to date on the effect of UFG structures on fatigue properties, as well as on the fundamental aspects of the behavior of UFG materials under cyclic loading conditions.
On the other hand, the fatigue crack growth behavior still remains least studied among other mechanical properties of UFG materials.
This suggests that while in the near-threshold region, the fatigue crack growth behavior is influenced by the microstructural factors, the crack growth in the present UFG material at relatively large ∆K may occur to be insensitive to the grain size.
The other important factor that can significantly affect the crack resistance of the present material is the presence of the second phase particles in the material structure [15].

Stress concentrations near to contact regions affect all processes occurring in frictional interaction.
High contact pressures and sliding velocities cause heating in the contact zones, and substantial changes in the properties of the surface layer.
In the case of mechanical transfer, several assumptions are made.
For chemical mechanical polishing, stability is reached at 175 cycles.
From expression 34, we could plot table 5 which expresses the variance share attached to each factor and the cumulative variance of the axes relating to the factorial plane projection for high-alloy steels.

An Research on Self-fused Alloy Coating by High Frequency Induction Treatment Guiquan Han1,2,a, Zengzhi Zhang2,b 1School of Chemical Engineering, Huaihai Institute of Technology, Lianyungang, Jiangsu, P.R.China, 222005 2School of Mechanical Electronic & Information Engineeringes, China University of Mining & Technology, Beijing, P.R.China, 100083 a20082008hgq@163.com, bzzzbeijing@163.com Keywords: Alloy coating, High frequency induction Abstract.
Comparing the microstructures and the properties of the coatings by cold adhesion, thermal spraying and laser refusing, we may conclude that: (1) One side of the workpiece should be preheated to 200℃ before induction, and the range of frequency induction should be selected as 200~250kHz. (2) The microstructure of the coating by cold adhesion is superior to that by thermal spraying, but the particle size range should be 0.047~0.044mm (200~320 meshes). (3) The corrosion resistance of Ni60 coating by cold adhesion is better than by thermal spraying, and the cold adhesion is the best way to prepare the wear resistant coating.
As there are many factors affecting heating power density, the following measures are employed to fulfill the exact control of the workpiece, proper technological parameters are selected in accordance with different substrates, different alloy powder, different diameters, and different thickness of the coatings.

Noise, shock and vibration, etc. caused in the process greatly affect the ecological environment of the region.
The impact of tunnel construction on the atmospheric environment.Two factors are responsible for the impact.
It not only affects the workers' physical and mental health, but also interferes with the normal life of nearby workers.
Lithology, topography, vegetation and human activities directly affect the degree of soil erosion.
Waste water and slag, mud and engineering garbage should be discharged as is required; the vegetation should be recovered in time after the project is completed, so as to ensure that the environment and waters along the projects are not polluted. 2) .Reasonable measures should be taken to avoid pollution, noise caused by improper construction methods and damage or disturbance on public property and living environment . 3) .Note the normal operation and the maintenance of machinery; Control the mechanical noise and maintain the minimum sound level.