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Main technical parameters of white LED 1) the most important parameters of LED in the optical properties is the luminous efficiency , the ratio of light energy radiation in the input power is defined as the luminous efficiency, this value is as known as the external quantum efficiency
The working life span of LED will not be affected by the high voltage.
The human eye judgment will be severely affected in this color rendering.
The monochromatic light color drift can affect stability of white LED lighting.
The expensive price is also a factor affecting the development of white LED lighting.

Furthermore, minor thermal distractions of the process may considerably affect the product quality.
Efficiency of its coupling is dependent on the laser beam parameters and on the surface condition, absorption, and the thermal properties of the processed material, as well as on the external factors and disturbances, e.g. laser-plasma interaction.
The thermal condition and thermodynamic properties are subject to change during the process; hence, for maintaining the output parameters, modification of independent parameters (e.g. intensity, fluence) is necessary.
Melt pool temperature is critical in determining the geometrical parameters of the clad, the depth of fusion, and material properties [18].
The use of the power control system also unified the material properties of the clad.

（1） From the formula we can get that the maxim depth of failure floor strata in long wall working face is related to the buried depth of coal seam and the physical and mechanical properties of rock and coal.
When it transmit in media and encounter different dielectric properties of the interface, the electromagnetic waves will be reflected.
Fig.2 The theory of Geological radar The application and effectiveness of geological radar is related to the attenuation coefficient of measured media and the physical properties difference of the media in two sides of the interface in measured geological structure.
The rock physical and mechanical parameters which are used to determine whether exists destruction of rock mass is shown in table 3.
The main reason is to be affected by the upper coal mining.

The mainly work location of mould is the internal surface and the inner surface of the quality directly affects the products quality.
Along with progress of the traditional surface engineering technology, the development of nanotechnology and deep research of nanometer materials, people found nano structured surface layer having specific properties, low dimension, small size, functional can significantly improve the organizational structure of the mould materials or grant new properties to mould materials, thereby nano surface engineering appears.
In order to prevent rigidity of the matrix from affecting the value of hardness, coating thickness must be more than 30 u m in hardness measurement.
Table 2 Hardness of two kinds of electro-brush coating Hardness（HV） Coating system 1 2 3 4 5 average nanocomposite electro-brush coating 679 682 676 683 685 681 ordinary nickel electro-brush coating 408 400 414 410 413 409 The comparison of the wear resistance of the coating The abrasive resistance of nanocomposite electro-brush coating layer is an important factor, which affects the usefulness of composite coatings.
Machine Building Automation,( Jun 2005, in Chinese) [4] Binshi Xu．Nano Surface Engineering[M]．Chemical Industry Press, Beiing,(2004, in Chinese) [5] Binshi Xu, Zhongwen Ou, Shining Ma．Nano Surface Engineering[J]．China Mechanical Engineering,(2000, in Chinese) [6] HU Zhenfeng, DONG Shiyuan, New Development of Nanocomposite Electro-brush Plating Technique Facing the Equipment Remanufacturing[J]．China Surface Engineering,(2010, in Chinese) [7] Longtang Xu．Properties, Structure and Codepocition Mechanism of Ni/nanopowder Compocite Coating Prepared by Electro-Brush Plating[D]．(2000, in Chinese) [8] Yoshitsugu Kimura, Masami Sekizawa, Akio Nitanai．Wear and fatigue in rolling contact, (2002) [9] Shaoju Wu．The Performance of Electro-brush Plating Nano Cr2O3-Ni Composite Coatings[J]．New Techology, (2009, in Chinese)

At present, various types of growth factors have been reported to affect the ethnogenesis of ASCs.
During the tendon healing process, various types of growth factors such as Transforming growth factor-β (TGF-β), insulin-like growth factors I and II (IGF-I and II), vascular endothelial growth factor (VEGF), platelet-derived growth factor (PDGF), and basic fibroblast growth factor (bFGF) work synergistically in the process [8,9].
The Roles of Growth Factors in Tendon and Ligament Healing.
Characterization of mechanical and biochemical properties of developing embryonic tendon.
Temporal expression of growth factors and matrix molecules in healing tendon lesions.

The Study of CAD/CAE Integrated Technology in Network Environment Hua Ding1,a, Zhaojian Yang1,b, Xuewen Wang1,c, Zhiyong Ding2,d 1 Institute of Mechanical Engineering of TaiYuan University of Technology 2 Taiyuan Mining Machinery Group Co., Ltd.
However, for different parts, the processes in modeling operation and in analysis step selection are greatly different, which affect the accuracy and quality of parametric design.
Parametric design is a kind of modeling approach, which is based on a series of factors, including features, dimensional constraints, data correlation, and dimension-driving model.
For the parametric analysis of a part, initially parameters of the part have to be extracted in terms of its structural characteristics, mechanical properties, and engineering features.
In summary, through the simplification of workflow in design and analysis, as well as the improvement of work efficiency of designers, this technology builds a design platform for modern mechanical design and achieves the sharing of resource and technology.

In order to accurately reflect the true mechanical properties of the composite beams, the sliding effect on stiffness and deformation in the interface between concrete and steel must be considered in design analysis.
According to the existing experimental results[4], the capacity of the structure will be affected greatly while the relative slip on the interface will be not obvious if the first shear plane was damaged.
Therefore, the main factors that affect the slip of Steel-Encased Concrete Composite Beam are the form, spacing and intensity between bottom steel and shear connector that on the top flange of the steel beam.
Not considering the factor of construction measure in the contrast test, we adopted same stud connector spacing in the top steel flange and the bottom plate.

Introduction The spatial distribution is seriously affecting the electromagnetic coupling coefficient among the superconducting pancake coils.
For the mechanical properties of superconducting tapes is not good, the superconducting pancake coil general makes like a thin pancake as shown in Fig.2.
Table 1 The parameters of two coils coils #1 #2 resistance(R[Ω]) 1.71 1.72 self-inductance(L[mH]) 3.59 3.61 inner diameter(a[mm]) 34 34 outer diameter(A[mm]) 56 56 Height(h[mm]) 8 8 Turns(N) 176 176 The mutual inductance between #1 coil and #2 coils can be calculated by using Eq.15: (16) And the coupling coefficient between two coils can be calculated by: (17) Coupling Factor 0 5 10 15 20 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Z0 / (cm) Calculation data Experimental data Fig.6 Coupling coefficient varies with Z0 (X0=Y0=0) 0 5 10 15 20 -0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Y0/ (cm) Coupling Factor Calculation data Experimental data Fig.7 Coupling coefficient varies with Y0 (X0=0, Z0=1cm) Fig.6 and Fig. 7 show the comparison
And the design not only satisfies the requirements of coupling coefficient, but also makes the structure compact and reasonable. 0 5 10 15 5 10 15 20 -0.2 0 0.2 0.4 0.6 0.8 1 Y0 / (cm) Coupling Factor Z0 / (cm) Fig.8 Spatial distribution and coupling coefficient 0 -0.01 0 0.01 0.05 0.1 0.25 0.5 Y0 / (cm) Z0 / (cm) 0 5 10 15 20 0 5 10 15 20 Fig.9 The isoline map of coupling coefficient Fig.8 and Fig.9 show that the coupling coefficient between two coils decreases rapidly with the increase of the distance between two coils.

UV cured are widely used in chemical mechanical biomedical electronics and other fields of national production [1-2].
There are many factors which affect the volume shrinkage, the monomer molecules is an important factor which in the van der Waals force.through polymerization, non-covalent bonds become covalent bond which is connected and the distance which is less than a covalent bond between the van der Waals distance causing discharge of the polymer molecules result in a much closer crack, causing volume shrinkage during polymerization [4].Therefore, optimizing the free radical curing system , reducing the volume shrinkage and preparing UV-curable coatings are a very critical issue facing the practical applications [5].
Results and Discussion Influnce of Monomer on Coating Volume Shrinkage Monomer is the major component in the uv curing coating, that affects the coating volume shrinkage ratio.The monomer and prepolymer curing film under the condition of light initiator by uv irradiation.
St ruct ure and properties of epoxy resin/ epoxy acrylate hybrid UV-cured material[J].

Due to the numerous influencing factors and their interdependencies it is normally not possible to analyze the impact of each input parameter of a typical EDM technology on the continuous process separately making the correlation of input and output parameters very difficult.
But despite the superior properties these implants remain a foreign object inside the body.
The significantly different mechanical properties compared to the surrounding tissue often lead to a failure of the implant after 10-15 years due to a loosening of the implant seat caused for example by the stress shielding effect [2].
Fig. 3: Excerpt of the thermal and electric properties of the investigated alloys The reason for the significantly larger crater volumes are most probably caused by the difference in the thermal properties of steel compared to the magnesium alloys, which are given in Fig. 3.
This among other factors could be a reason why higher material removal rates are achieved using graphite for long discharge durations compared to copper.