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properties.
Conclusion The CHA-gel with excellent physicochemical properties can be prepared under the optimal conditions, which can set foundation for developing better mechanical and Enzyme-resistant properties products of CHA-gel.
Orthogonal experiment The selected factors affecting orthogonal experiment are concentrations of NaOH, temperatures and the ratios of cross-linking agent to HA (g/g).
Table 1 L9(33) factors and level of the orthogonal experiment.
This research can establish foundation to develop better mechanical and enzyme-resistant degradation properties products of CHA-gel．

In this study, parameters affecting the mechanical properties of FRP-confined cylindrical and prismatic concrete columns were studied via experimental data, which were collected after an extensive literature review.
Experimental evaluation on FRP-confined concrete specimens has shown that their stress-strain behavior is significantly affected by many parameters such as, concrete strength and mechanical properties of FRP.
In this study, firstly, parameters affecting the mechanical properties and stress-strain behavior of FRP-confined concrete are discussed, which were collected after an extensive literature review.
Since strength of a confined concrete specimen is affected by sustained stress level, environmental exposure and temperature changes, those parameters were taken into account by correction factors.
From these parameters, unconfined concrete strength, number of FRP layers (FRP thickness), mechanical properties of FRP material and the corner radius in prismatic specimens were found to be more influential on the confinement effectiveness.

Analysis on Affecting factors of Slab Surface Transversal Corner Crack for Medium-Carbon Steel with Boron in Continuous Casting Qichun Peng 1, a, Zhibo Tong 1, b and Danping Fan 1, c 1.
Introduction Our country is rich in boron resources, adding traces of boron to replace parts of valuable elements can obtain excellent mechanical properties.
data from April to September, 2011, to explore the influence factors on corner crack of medium-carbon steel with born A36-LB, among them, component analysis is the spectral data.
Summary Slab corner cracks is the result of various factors.
Formation and influencing factors of oscillation marks for continuous casting steel billet[J].

The nonlinearity of material properties at different temperatures and the manner of braking force applying on a brake system are two key factors to affect the coupling of temperature and thermal stress.
Considering these two factors, a finite element analysis model of automobile brake disc and pad is established.
From Eq. 1 we can see that the elastic matrix (elastic modulus) of a brake pair is the major factor which affects the contact stress distribution of a single stress field.
Under a specific structure and working conditions, the contact stress is a direct cause of affecting the heat flux density.
Material properties Material properties of brake pad Material properties of brake disc Temperature[] 20 100 200 300 Modulus of Elasticity [GPa] 22 13 5.3 3.2 120 Thermal Expansion Coefficient [-1] 1×10-5 3×10-5 1.1×10-5 Density[kg/m3] 3960 7350 Heat conduction coefficient[W/m·] 4.8 48 Specific heat capacity[J/kg·] 600 710 Poisson ratio 0.25 0.3 Finite Element Model and Boundary Conditions.

The Electrical properties of polyurethane (PU) filled with graphene nanosheets (GRN) at low frequency is investigated.
The dielectric constant is one of the key factors for increasing actuator ability.
It has reported in a recent study that the increase of the dielectric constant is one of the key factors for enhancing the energy conversion capability.
Fig. 1 Schematic illustration of PU/GRN films preparation The PU/GRN composites were characterized in the matter of their dielectric properties, electrical properties, morphological structure, and thermal stability.
Pu: Enhancement of dielectric and electrical properties in BFN/Ni/PVDF three-phase composites.

Therefore, further investigation of the mechanical properties of nonlatex elastics should be conducted.
To investigate and compare the mechanical properties of 3 commercial brands of nonlatex orthodontic elastics.
Since the dimensional characteristics of the elastics would inevitably affect their mechanical properties, the dimensions were measured before testing the mechanical properties.
However, some variations of the dimensional and the mechanical properties were observed among each brand.
However, an in vitro experiment cannot indicate the exact properties of the elastics since in real clinical situations, the elastics are exposed to numerous intraoral factors as well as influenced by the movement of the jaws(11).

In order to improve its mechanical properties and to obtain various specific properties, EPDM can be combined with other natural or synthetic rubbers like chlorobutyl rubber (CIIR) or styrene butadiene rubber (SBR) [10-14].
The effects of SBR rubbers content on the mechanical, thermal properties and adhesion ability of blends have been investigated.
Beside the mechanical properties, the adhesion strength will be examined to check the effect of some factors such as ingredients ratio, EPDM/SBR rubber ratio on the adhesion of the blend with the steel cord.
Adhesion between metal - rubber is affected much by the metal surface but not the mechanical properties of vulcanizates.
E., Improved mechanical properties of NR/EPDM and NR/ butyl blends by precuring EPDM and butyl, J.

This study intended to determine the theoretical dielectric properties of this material.
Based on Debye theory, describes the dielectric properties of the composite material at high temperature multi-scale model, discuss the impact of factors on the micro and mesoscopic dielectric properties.
Although the component of the composite material remains relatively independent, but the properties of the composite material components is not a simple additive properties, and has important improvements.
They have a greater impact on the micro-polarized material, thereby affecting the dielectric loss materials.
Figure.4 Influence of impurities on the dielectric properties of SO2 Conclusion This paper studies the SiO2 dielectric properties of composite materials, according to the physical state of the experimental analysis of factors affecting the dielectric properties of the composite material, and the temperature dependence of the various factors analyzed theoretically.

The drilling pressure, rotation speed and drilling depth were the main influencing factors on the dynamic reliability of drill string.
The physical properties of rock show large difference in vertical distribution and the reservoir pressure, lithology and aperture are uncertainty factors.
The geometry and mechanical properties distribution of drill string in deep & ultra deep well According to the force equation analysis of drill string, the stress state of drill string is the function of its structure, mechanical property and drilling parameters.
Basic parameters: the well depth is 5000m, the drilling fluid density is 1.2×103kg/m³,the distribution of the drill string parameters of geometric and mechanical properties are shown in table 1.BHA: Φ244.5mmPDC+Φ158.75mm drill collar×19+Φ127mm drill pipe(3675m)+Φ127mm drill pipe(1135m).
The example shows that the dynamic reliability of the drill string system is smaller than that of all the basic elements, drill pressure, rotating speed and the depth are major factors affecting the reliability of drill string.

However, due to heat, the mechanical properties of the deposited material may be affected.
However, due to heat, the properties of the deposited metal may be affected.
Moreover, inter-pass cold rolling can affect SW reduction [9], compressive stress induction, and the effect on static and fatigue properties [10], as well as improve microstructural properties and reduce porosity [11].
One of the key elements affecting the hardness test is the grain size.
According to the study, thickness ratio is one of the key factors influencing the attributes.