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Aim of our preliminary in vivo study was to evaluate bone regeneration properties in three different bone conditions and to compare expression of OPG, NFkB105, BMP2/4, MMP2, IL 1 and IL 10 between healthy, osteoporotic and osteoporotic sham surgery affected rabbit bone controls.
From many described, some of bone homeostasis factors are more important in comparison to others.
Nuclear factor kappa beta 105 (NFkB105) belongs to the transcription factor family which regulates immune system and expression of cytokines, growth factors and inhibitors of apoptosis [3].
Therefore, the aim of our preliminary in vivo study was to evaluate bone regeneration properties in three different bone conditions and to compare healthy bone homeostasis factors between osteoporotic and osteoporotic sham surgery affected rabbit bone controls using OPG, NFkB 105, BMP 2/4, MMP 2, IL 1 and IL 10.
Thus, we can speculate that the decrease of bone regeneration properties in osteoporotic bone can be induced by the trauma.

Sintering Effects on the Microstructure and Mechanical Properties of CoCrMo Alloy M.H.
In order to enhance the mechanical properties of these alloys, Powder Metallurgy (P/M) route can offer additional aspect that can significantly improve the mechanical properties of these alloys for biomedical purposes.
Results and Discussion Mechanical Properties.
The sintering temperature was the most influential factor on mechanical properties and microstructure of sintered alloy.
Powder Metallurgical processing of Co-28%Cr-6%-Mo for dental implants: Physical, mechanical, and electrochemical properties.

Therefore, to explore the factors which affect the bonding strength and bonding strength variation is very important for improving the bonding process and the bonding performance.
A lot of research has been done on properties of the aluminum alloy bonding joints at present.
Different surface treatments can affect bonding properties because of the change on aluminum alloy surface cleanliness and roughness and surface chemical structure.
Steel and aluminum alloy plates glued joints mechanical properties of finite element analysis [J].
The impact of shear strength of Layer size of the aluminum-lithium alloy single-lap adhesive bonded joints [J].Materials for Mechanical Engineering, 2012 (36) :85-88 [8]Xiaohui Liu,Guangyan Zhang,You Wang.the various factors of Affect the bonding surface characteristics[J],1997(4):224-226

Microstructure, microhardness and tensile properties were investigated in this studied.
Besides that, there is a significant loss in mechanical properties as compared to the base material.
These factors make the joining of aluminum alloys by conventional welding processes unattractive.
The influences of the tool parameter (rotation speed, travel speed, shoulder size) on microstructure and mechanical properties of the FSWed plates were experimentally investigated.
This is because HAZ is a heat-affected-only region.

Analysis of variance showed that sliding speed and load were the significant factor affecting WR and COF respectively.
As a result, it leads to severe wear damage, affecting failure of the component leading to huge economic loss.
Currently, researchers are focusing on developing hybrid metal matrix nano composites (HMMNCs) because of its improved mechanical and tribological properties.
In recent times, the tribological properties of ceramic reinforced AMMCs have been examinedby changing internal factors like reinforcement composition (single/ hybrid reinforced), percentage content of reinforcement, microstructure [3, 4] and external factors like sliding velocity, sliding distance, applied load, sliding time etc. [4].
Emamy: Microstructure and wear properties of A356-10% B4C cast composites, Mater.

Apart from cast defects, the morphology of eutectic silicon and intermetallic phases (Fe- and Cu-rich phases) are also important factors which have an influence on the fatigue properties of Al-Si cast components.
Microstructure factors that have an influence on mechanical properties were described in previous studies [1-2] and therefore their effects on fatigue properties were studied.
But according to Moreira [4] the morphology and the size of the second phases are important factors causing stress concentration in the a-matrix around them.
Based on previous studies of the microstructure and mechanical properties [8] were defined as the optimum mode for heat treatment of secondary AlSi9Cu3 cast alloy - solution treatment at a temperature of 525°C with a holding time of 4 h.
Porosity can by detrimental to fatigue properties, mainly solidification shrinkage (Fig. 1b).

It was found that the sintering conditions did appear to influence the mechanical and optical properties.
Several studies have reported that the mechanical properties of 3Y-TZP depend on various factors such as the grain size and chemistry [6, 7].
Results and Discussion The physical and mechanical properties of 3Y-TZP sintered samples Table 1. shows the apparent densities and porosity properties of samples A-D.
Moreover, the heating rate was found to have an effect on mechanical properties.
Readey, Effect of heat-treatment on gain, phase assemblage, and mechanical properties of 3mol% Y-TZP, J.

So the main purpose of this paper is to understand the mechanical properties of electrode layer and find out the effect of temperature and the content of catalyst particles on the electrode yield stress.
During multiple cycles operation, with the change of temperature and humidity, the swelling of the membrane is the primary drive force and the main factor which affects the stress distribution through MEA [3].
Therefore, the mechanical properties of the electrode can affect damage propagation and migration in the MEA.
Conclusion The main purpose of this study is to get the mechanical properties of PEM fuel cell electrode and find out the effect of temperature as well as the content of catalyst particles.
Garboczi, Elastic properties of model random three-dimensional open-cell solids, J Mech Phys Solids, 50 (2002) 33-55

Application of Artificial Neural Network Based on GA-BP Algorithm To Predicting Mechanical Properties of TC4 Zhezhe Hou1,2,a, , Yanliang Du2,b 1.
Introduction The mechanical properties of steels are remarkably affected by many factors, such as its chemical composition and experienced progress procedures.
The heat treatment is the most effective in all factors so that many efforts have been made to investigate the modeling of the relationships of the mechanical properties and heat treatment of steels at ambient temperature.
On the one hand, the experimental data on composition and mechanical properties of steels are generally polluted by some random factors, and there is little that can be done to avoid such pollution.
After adequate training according to sufficient pilot experimental data, it is applied to predict the mechanical properties of TC4 alloys.

In addition, data was collected and statistical analyses were performed to assess the effects of environmental factors, such as temperature, on the static properties of the composite rods.
The study evaluated the morphology and mechanical properties of the composite rods [8-13].
The advantages and disadvantages of the mechanical properties of the composite rods are demonstrated in this study.
As a result, it is expected to derive design guidelines for structural factors for various applications.
Furthermore, the statistical analyses were performed to evaluate the effects of environmental factors, such as temperature, on the static properties of the rods.