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Due to the lack of good mechanical properties of biological materials and synthetic materials, biological compatibility than natural mater The results showed that the three-dimensional porous scaffolds, meniscus of type I collagen can be made into ideal size, shape, fibrocartilage cells attached well in the scaffold pore wall, maintaining stable phenotype, secretion of extracellular matrix.
Type I collagen meniscus scaffold cell compatibility is good, but the mechanical properties of the composite are relatively poor, and other biological materials to improve the mechanical strength, is expected to make an ideal scaffold in meniscus tissue engineering.
The study of tissue engineering meniscus is carried out from the seed cell, scaffold, cell factors, and has gained a stage achievement.
The mechanism of factors on cytokines and regulation is not completely clear.
Acute injury affects lubricin expression in knee menisci: An immunohistochemical study.

The dimensional stability of impression materials is a variable with an impact on the accuracy of dental prostheses; alongside with other factors including the modifications occurred during the material preparation or the impression techniques.
Introduction The dimensional stability of impression materials is a variable with an impact on the accuracy of dental prostheses; alongside with other factors including the modifications occurred during the material preparation or the impression techniques [1].
The factors with an influence on dimensional stability are: impression material width; tensile modulus; temperature during the imprinting process; storage humidity; the time lapse between imprinting and casting.
As material properties vary considerably according to the chemical composition, each having both advantages and disadvantages, it is necessary to know the material properties in order to use them differently according to the working technique and to the particular clinical case.
The immediate model casting is a condition for accuracy, any delay affecting the details.

For the situation that concrete engineering required rapid and timely repair after nature disaster, setting time and influencing factors of phosphate rapid repair material were studied in this paper.
Phosphate cement with an early rapid hardening, low-temperature hydration properties, volume stability, corrosion resistance[2,4], was suitable for the rapid prepair of concrete engineering after disaster.
Meanwhile, in order to improve the mechanical, microstructure properties and color of phosphate cement it often need to adjust the water-cement ratio, the ratio of phosphate and dead-burned magnesium.
Therefore, the effect of these factors on setting time of phosphate cement should be studied and it can provide the theory support for the rapid prepair of concrete engineering.
With the continuous growth of hydrate nucleation, grow up and even with each other and make contact with magnesium phosphate cement to form a dead body burned MgO particles as a framework, phosphate binder crystalline hydrate crystal structure for the network, so that hardening magnesium phosphate cement paste with high mechanical properties for the hardened body [2].

Preface Engineering structure in the of mechanical problem, its essence should belong to the category of the nonlinear, that is, by research of the class structure system of internal corresponding volume and by role of foreign factors is nonlinear of causal relationship, linear assumptions is just actual problem of simplified, as linear problem of basic theory and analysis method of increasingly perfect, nonlinear problem of research will became academia and engineering application research of focus content.
Because the mechanical properties of the concrete is affected by many factors, such as water cement ratio, sand particle gradation, aggregate strength, so, it is difficult to accurately reinforced concrete structure of internal force analysis.
ABAQUS reinforced concrete nonlinear analysis Reinforced concrete structure nonlinear factors mainly divided into three groups [1]: the material nonlinearity, geometry nonlinear, nonlinear boundary conditions.
Material nonlinearity refers to the steel and concrete two materials in the structure stress analysis process, not only should consider its elastic properties that linear phase, also want to consider its plastic performance that is nonlinear phase.
(3) Some other factors may affect analysis results, such as: the convergence of finite element analysis, simulation of the rationality of the parameter selection and finite element, the division of the unit types and amounts, test specimen quality and loading conditions casting.

Material Property Analysis and Technology of Washover Permanent Packer Fan Luo1, a, Jin Yang1,b , Shubin Guo2,c 1 China University of Petroleum, Fuxue Road 18, Chang Ping District, Beijing, China 2 China National Offshore Oil Corporation, Tianjin, China aluofan0118@163.com, byjin@cup.edu.cn, cguoshb@cnooc.com.cn Keywords: Material Property, Permanent Packer, Washover Abstract.
In this thesis, the material property of pipe strings is analyzed and the axial forces, torques and frictions and other mechanical calculation models of the pipe string are established under two kinds of drive modes.
Through the results of analysis of pipe string force, it analyzes the material property of permanent packer, optimizes the parameters of downhole tools and operation methods in milling operation.
Due to a number of factors such as limited capacity of workover rigs, mismatch of related equipments, complexity of the well condition, lack of risk awareness of the deep-inclined well milling and salvaging a permanent packer, it often results in downhole accidents like drilling tools breaking off.
Milling Parameters Optimization Milling parameters primarily depend on property of downhole screw motor.

Influence Factors of Reheat Crack Chemical Composition of Material.
The increased thickness of joint has obvious effect on the reheat cracks for both metallurgical factors and mechanical factors. 1) Reduce the material toughness and the critical plastic deformability of welded joint [28]. 2) Increase HAZ strain with the increased welding layer [9]. 3) Increase residual stress of joint for increased temperature difference during PWHT [29].
Problems Needing Further Researches Reheat Cracking Mechanism and Influence Factors of Steel T23.
Systematic research on the influence of increased wall thickness on the metallurgical and mechanical factors of reheat crack occurrence will contribute to the development and optimization of welding process and obtain widely applicable measures for mitigating reheat cracks in the joint of thick-walled weldment.
T/P23, 24, 911 and 92, New grades for advanced coal-fired power plants—Properties and Experience, Int.

Such stresses can cause plastic deformation and cracking near interface and affect the mechanical integrity of the bonded materials.
However studies on the evaluation of the residual stresses and the cracking affecting fracture strength near interface are rare in literature due to the analytical complexity involved [4-5].
The bonding times used were changed in the range proposed for glass-to-metal diffusion bonds to obtain the optimum mechanical properties.
The physical properties used in the simulation were shown in Table 2 which listed all the required properties about the borosilicate glass and Kovar.
The temperature depending on material properties as well as the convection and radiation as boundary conditions were considered in this thesis.

The corrosion resistance of materials is affected by many factors, such as crystal defects, metallurgical structure, composition, etc.
The higher corrosion resistance of CP-Ti processed by multi-pass ECAE could be attributed to factors as follows.
The results suggest that the texture is the dominant factor controlling the corrosion properties of two-pass ECAEed CP-Ti.
Improving the mechanical properties of magnesium and a magnesium alloy through severe plastic deformation.
Effect of the number of ECAP pass time on the electrochemical properties of 1050 Al alloys.

In fact, the process is not energy-consuming compared to thermo-chemical processes such as carbonizing and nitriding because it allows generating high power and focusing it locally and during a short time to achieve hardness at the surface area without affecting the part core.
A developed 2D model includes the coupling between electro-magnetic and thermal fields, and takes account of the non-linear behavior of material properties versus temperature.
The model developed by simulation should take into account the influence of machine parameters (such as frequency, currents density, and heating time), material properties, inductor characteristics, and part geometry [4-5].
The appropriate frequencies and power amount to deliver to part depend on dimensional factors and geometry to be heated.
For the two cases, where the dimensional factor is 2 and 0.5 respectively, the teeth number is kept the same and only the scale factor is modified.

Effect of PA6/PP blend ratio Mechanical properties.
Effect of organoclay loading on the properties of PA6/PP nanocomposites Mechanical Properties.
Fig. 5 shows the mechanical properties of PA6/PP/organoclay/POE nanocomposites with different clay loading.
Effect of mixing sequence on the properties of PA6/PP nanocomposites Mechanical properties.
The effect of mixing protocols on the mechanical and morphological properties has been investigated [34].