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And finally we got a new kind of hyperbranched polymer bactericides.The relevant key factors to influence those reaction was studied.
Introduction In recent years, hyperbranched polymer with its novel structure, the unique physical and chemical properties, wide range of application prospect has caused great attention of chemists.
Affect the substitution reaction factors are: reactant ratio, reaction temperature, reaction time, catalyst dosage.
Affect the substitution reaction factors are: reactant ratio, reaction temperature, reaction time, catalyst dosage.
The best condition for those factors are: sodium hydroxide and bromination of hyperbranched polymer Moore feeding ratio 1.2:1, reaction temperature of 180 ℃, divinyl three amine and bromination of hyperbranched polymer Moore feeding ratio 1.2:2, and the reaction time for 4 hours.

Martensite in the austenitic stainless steels exerts an influence on its cold forming performance and mechanical properties.
The influencing factors of SIM have an important significance on the production process control and performance evaluation.
Table 2 shows the mechanical properties under 2×10-2s-1 and 5×10-4s-1 strain rates.
Effect of strain rate on the strain-induced γ→α`martensite transformation and mechanical properties of austenitic stainless steels.
Effect of srtain rate on strain induced α`martensite transformation and mechanical properties of austenitic stainless steels.

A computational algorithm, which takes into account two factors, has been suggested.
Firstly, the gradient of material properties resulting from the changes in the carbon content in the surface layer after the carburizing process.
The other is a process of quenching, which brings about significant changes in the material properties and in the geometry of a detail under treatment.
In the first step material issue lists with the properties mentioned above were entered.
A material with different properties was assigned to each of the sub-layers.

Introduction GFRP bars have high strength, light weight, corrosion resistance and other excellent properties, especially used in soil nailing.
The soil nailing gives full to the role of tension, and bending and shearing performance requirements are relatively low, so the study on tensile mechanical properties of GFRP soil nailing is crucial [1-7].
Not all the strength factors of the composite material can be presented by the formula in calculating strength, which fails to consider the microstructure defect, so.
In the calculation of the tensile strength , fiber size and content should be discussed separately and set up different affecting parameters, while they also have relevant with each other.
Conclusions (1) The failure strength of GFRP bars with different diameters is affected by fibers material and reinforced material and the bonding interfacial properties.

However, annealing at temperatures below 500oC after coldworking greatly affects the properties.
This solubility allows alloying with many of the elements to modify both the mechanical and transformation properties of the system.4 Therefore, factors such as nickel content, aging, thermomechanical treatment and addition of alloying elements, affecting the structure, are important for controlling the memory behavior.15 However, substitution of copper for nickel in this investigation affected the transformation behavior and associated shape memory characteristics in many aspects.
Effect of low-temperature phase changes on the mechanical properties of alloy near composition NiTi.
Triple-stranded stainless steel wires-evaluation of mechanical properties and comparison with titanium alloy alternatives.
Melton KN, Mercier O. the mechanical properties of NiTi-based shape memory alloys.

However, the fast degradation and weak mechanical property of collagen nanofiber prevent its applications in tissue engineering.
The differentiation of MSCs was carried out using neuronal inducing factors including β-mercaptoethanol, epidermal growth factor, nerve growth factor and brain derived growth factor in DMEM/F12 media for a period of 5 to 15 days on electrospun nanofibers.
MI generally affects eight million people in the US and increases at a rate of 800,000 new cases each year and congestive heart failure (CHF) is the end stage of heart disease affecting more than 5 million people in the US and increasing at a rate of 550,000 new cases each year [11].
[NUSNNI, NUS] initiated the research on freeze dried gelatin hydrogels for the culture of rabbit cardiomyocytes for the regeneration of infarcted myocardium [Fig. 9] and modified the biomaterials/hydrogels with growth factors and biopolymers to increase the mechanical properties and having potential elastic properties suitable for cardiac tissue regeneration.
Repair of acute myocardial infarction by human stemness factors induced pluripotent stem cells.

Make numerical analysis on 9 programs in Table 2, by referring to the influencing factors shown in Table 1.
The impacting sensitivity of construction parameters on the efficiency of construction can be ranked as follow: C, D, A, and B. the heading pre-reinforcement pattern outside contour is the most important affecting factor on the efficiency of construction.
(2) Results from overall balance method: Excavating step length (D) is the most important factor influencing on heading displacement, and the more important factor affecting on the efficiency of construction, and the effect trend of both factors is consistent, thus being considered as an index to evaluate the heading displacement and construction efficiency, namely D3 (1.8m).
The pre-reinforcement pattern outside the contour (C) is the most important factor affecting the efficiency of construction, and the secondary important factor affecting the heading displacement, thus being considered as the index of efficiency of construction, C2 (small pipe shed).
(2) the paper concludes the sequence of construction parameters sensitivity on the force on wall rock by analyzing sensitivity of factors on the construction parameter: arch advanced supporting pattern, footage driving cycle , heading pre-reinforcement length, heading pre-reinforcement density; the arch advanced support pattern is the most important factor affecting the efficiency of construction, footage driving cycle is the most important factor influencing the vertical displacement of heading

Naghadehi employed a probabilistic expert semi-quantitative coding methodology to assess the importance of factors that affect the stability of rock slopes within the rock engineering systems framework[1].
The aim of the paper is to evaluate the factor of safety of a rock slope using finite element method, and to discuss variation of top horizontal displacement versus factor of safety of slope stability.
The basic mechanical properties of rock mass are listed in Table1.
Table 1 Basic mechanical properties of rock mass Parameters r/kg/m3 c/MPa j/° E/GPa m Values 2300 0.3 24 10.0 0.30 Mohr-Coulomb fracture criterion, sliding criterion of slope stability, is expressed as follows (1) Where c is cohesion of rock, j is inner fraction angle of rock, τ is shear strength of fracture surfaces, σN is the normal stress.
So, the critical factor of safety of slope stability is defined as F=1.7.

The cambolt is used as a part in the steering system of a vehicle for the purpose of driving balanced, so some proper mechanical properties such as strength and endurance limit are required for this part.
Fu and Zhu[3] et al (2010) predicted the best conditional temperature of different forming processes for TA15 alloy bolt with excellent mechanical properties and presented a rational die design, but it also given the billet as a hot forging.
In general, the friction factor for cold forging ranges from 0.05 to 0.15; here, the shear friction factor between the workpiece and the dies is set equal to 0.08, which is specifically used for cold forging in DEFORM.
The physical properties of these materials are listed in Table 1.
The lifespans of the dies are affected by how much load they can withstand, and their relationships with the other variables.

These properties make the study of SHS of great difficulty.
Some factors such as the particle size of reactants, the relative density of the media, the quantities of additives directly alter the way and velocity of combustion wave, which affects the combustion temperature, making the phase formation and properties of the product different.
Finally, Large amounts of gas can’t escape and eventually leave in the ceramic, leading to a large number of pores, which greatly affect the mechanical properties of ceramics.
From the point of density, the ceramics of the third system were of good properties compared with the others.
[11] Zhongmin Zhao, etal: Prepared by SHS Gravitational Separation lined steel ceramic coating microstructure and properties ,edited by Mechanical Engineering Materials. 1998,22 (2): 34.37.