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However, no research has been conducted on the mechanical and antibacterial properties of MTA modified with the addition of CuONP.
The MTA/CuO mechanical properties test results can be seen in Table 4.
Adding 1.5% AgNP and 0.5% TiO2 is an optimum filler to increase MTA's maximal mechanical properties.
However, when the concentration of CuONP was increased to 3%, their mechanical properties reached a tipping point, and compressive strength decreased.
Riahi, Effects of CuO Nanoparticles on Microstructure, Physical, Mechanical and Thermal Properties of Self-Compacting Cementitious Composites, J..

Sled motorcycle model design is a comprehensive design gathering mechanical engineering, ergonomics, aerodynamics and color design.
Sled motorcycle, a winter entertainment tool, has had great popularity with people in recent years, and it has dual-property, both material goods and art works.
Sled motorcycle aerodynamics research When sled motorcycle runs in air, air will exert a force to on its surface and the force will directly affect motorcycle sled’s performance.
Research results of Volkswagen AG suggest that an ideal shape with low drag coefficient looks like a dolphin, which is shown in Fig. 2, and its power factor is as high as CD = 0.06.
Color balance and stability should be combined with balance and stability factors of model shape to gain the overall’s balance image and stabilization effect

Because of some intrinsic properties of the PZT actuator, such as hysteresis, creep and nonlinearity effect, it’s difficult to achieve satisfactory results and control precision for conventional PID controller.
It is the core of the machinery, whose precision will directly affect the precision of the complete machine.
These inherence properties greatly limit the improvement of the high precision of the micro positioning system.
The adjustment index is (9) (10) Where is the learning rate,, and is momentum factor, .
Hangzhou, Mechanical and Energy Engineering, Zhejiang University.2008:53

., Huwei, Yunlin 632, Taiwan, sylin@nfu.edu.tw Keywords: process parameters, negative strain hardening rate, mechanical force, hydro-forming, magnesium alloy.
Although low ductility and poor formability properties are always accompany Mg alloy at room temperature due to the hexagonal closed-packed crystal structure, the development of some effective forming techniques overcoming this forming difficulty for this kind of material is strongly worth exploring in industry.
The investigated factors are type of lubricant, initial extrusion speed, temperatures and type of material.
ANOVA was used to investigate how parameters affect the extrusion process.
While punch velocity and shear friction factor were set at two and three levels, respectively.

The subsiding of the cultivated land in mining area leads to the surface humus soil crushing to the underground or getting erosion, and destroy the soil physical properties and chemical properties.
There are several characteristics of the solid waste, such as the numbers is huge, the sort is various, the physical and chemical properties are complex, and the disposal facilities are serious inadequate, the recycling utilization rate is low and so on.
Subsidence, digging and cover occupation of the land caused the cultivated land changes in surface characteristics and emergence of the crack, changed the original mechanical properties and irrigation and drainage facilities of cultivated land, and led to the changes of soil physical and chemical properties and soil environment indexes.
The water conservancy facilities were destroyed in mining separation and transportation process and the river way was blocked by striped surface soil and tail ores, leading to the trouble of water supplies and drainage and affecting the irrigation and drainage condition of cultivated land.
The productivity of cultivated land is affected by local economic, technical and farming conditions and other factors.

Development of Nonlinear Analytical Models for the Study of Heat/Mass Transfer Properties in the Drying of Porous Type Fabric Ralph W.L.
Relationships between the model parameters and fabric physical properties were determined for further used in the design of drying equipment.
The model principle of the First order kinetic is an assumption that vaporization of bounded water is a dominating factor affecting the moisture removal rate at the falling rate period.
The model equation is given as: Table 1 - Textile properties of the tested fabric samples.
However, regression model has considered the air velocity properties that have not been included in the Arrhenius equation.

Caoyusheng, Wanghuina and Wangdong (2008) [4] have calculated the sectional curvature ductility factor of the special-shaped steel tube concrete column and analyzed the factors that have influence on the section curvature ductility by using nonlinear whole process analysis method.
is in proportion to the pressure of tangent interface and is no less than average bond force , which is : (8) μis friction factor; P is contact pressure between contact interfaces.
(3) Increasing the axial-pressure ratio has little affect on ultimate strength and earthquake resistance behaviors of the specimen
Study on Properties of Steel Fiber Reinforced Concrete-filled Steel Tube Structure [D].wuhan: Wuhan university Ph.D Thesis.2008
Experiment of WRC-T Concrete Filled Steel Tubular Short Columns Mechanical Property under Axial Compression [J].

Specifications and mechanical properties of the pipe is as below (Table 1), 7DE�H����0HF�DQ
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SH� Grade G-105 Modulus of Elasticity E=30×10 6 (psi) Ultimate Tensile Strength σu=125000psi Yield Strength σy=110000psi Poisson's Ratio υ = 0.3 Section Area Body of Pipe A=3.6209 (Sq. in) Solar Sectional Modulus Z=5.144 (Cu.
SCFs due to change in cross section area and stresses due to bending conditions The stress concentration factors due to change in cross section area and axial / bending load is also calculated using an axisymmetric model.
The repeated maximum tensile bending stress in typical S-N curve is then replaced by σad which is called adjusted stress and takes the effect of axial tension due to the weight of the hanging drillstring and also the effects of stress concentration factors due to die-marks.
The fatigue damages of the die-marked drill pipes for different length of drillstring below dogleg, different dogleg severity values and different stress concentration factors are presented in figures 4 to 6.
The stress concentration factors, versus die-mark depth were analytically determined.

Advanced ceramics has become an attractive material in various types of application such as aerospace, automobile, electronic, machining tools and biological industrial due to their inherent properties such as high hardness, high strength at elevated temperature, high wear resistance, good electrical insulators, high thermal conductivity and chemical inertness.
Due to their superior properties, advanced ceramics are hard to be machined with conventional machining methods [1].
However, limited knowledge is available on the tool wear behaviour as well as its influential factors on advanced ceramics in end milling.
In Response surface method (RSM) the experiments are performed using CCD to develop a second order model as: R = b0+b1 A+b2B+b3C+b11 A2 +b22 B2+b33 C2+b12 AB+b21 AB+ b23 BC+b13 AC+b32 BC+b31 AC (1) Where R is response and A, B, and C are the different machining factors.
Significance of factors and their interactions can be computed using statistical analysis.The machining parameters and their selected levels are shown in Table 2.

The purpose of this paper is to evaluate the surface properties and corrosion behavior of Co-Cr alloys ground by employing Electrolytic In-process Dressing (ELID) grinding; this evaluation was carried out by abrading the alloy surfaces using ultra high molecular weight polyethylene (UHMWPE).
Further, surface modification techniques that provide biomaterials with useful properties are also needed [6-9].
The evaluation of surface modification technique for biomaterials is often performed by taking a single factor into consideration instead of combining such factors as corrosion, wear and fatigue.
This sort of evaluation is not always sufficient to predict the exact effects when a biomaterial is introduced in a live body, where various degradation factors synergistically affect it.
The Co-Cr alloy has high corrosion resistance due to the passive layer on its surface; however, this layer can be damaged by some factors, including abrasion.