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The results show that the factors affecting the adsorption capacities of pitch-based activated carbon, in order of importance, are carbonization temperature, oxygen-blowing time, carbonization time and additives.
Four factors affecting preparation of high absorption capacity activated carbon precursor are examined by orthogonal tests, which are, in order of importance, carbonization time, oxygen-blowing time, additives and carbonization temperature.
Tsyntsarski, et al, Effect of activated carbons derived from different precursors on the hydrogen sorption properties of magnesium, Fuel Processing Technology 92 (2011) 1963–1969
Cazorla-Amoro´s, et al, Adsorption properties of carbon molecular sieves prepared from an activated carbon by pitch pyrolysis, Carbon 43 (2005) 1643–1651
Petrov, et al, Effect of different oxidation treatments on the chemical structure and properties of commercial coal tar pitch, Carbon 43 (2005) 261–267

Introduction Metal foams are a relatively new class of materials with cellular structure, namely a solid metal, frequently aluminium, depleted by a large volume fraction of pores; the density of the media affects the overall mechanical properties, thus can be adopted as an additional variable for functionally grading the material resource within a structural element.
Parametric Analysis A parametric analysis is carried out varying some geometrical and mechanical properties of a sandwich beam in order to assess the behavior under pure bending and the potential improvements in mechanical performances.
The mechanical properties of the sandwich beam are summarized in Tab.1.
The curves A-E refer to the different aluminum foams herein considered, whose mechanical properties are summarized in Table.1.
Ashby, Cellular Solids, Structure and Properties, second ed., Cambridge University Press, 1999, 345-386

Mechanics Properties of Adapter and Development of User Subroutine Mechanics Properties of Adapter.
Figure 2 shows the test sample of V-sharp adapter, doing the platform test of V-sharp adapter test specimen, the out-of-plane mechanical properties are shown in figure 3.
The mechanical properties of V-sharp adapter exist strong nonlinear in the force to deformation curve for V-sharp adapter.
It is the main factor to influence the mechanics properties of V-sharp adapter; The platform width is mainly affected by rib high, and the rib angle mainly influence platform initial force.
Considering all the factors above, the six working conditions are studied in this paper.

The grain size in the area near the weld lines is the main factor that affects the efficiency of the VSR treatment.
Their chemical constitution and mechanical properties are listed in table 1-4.
Table 1.Chemical constitution of the Q235 steel (wt.%) C Si Mn S P Fe ≤0.20 ≤0.35 ≤1.4 ≤0.045 ≤0.045 other Table 2.Mechanical properties of the Q235 steel Yielding strength σs/MPa Tensile strength σb/MPa Ductility δ/% ≥235 370~400 ≥26 Table 3.
Chemical constitution of the Q345 steel (wt.%) C Si Mn S P Nb Al Fe ≤0.18 ≤0.50 0.9~1.6 ≤0.035 ≤0.035 0.02~0.05 ≥0.015 other Table 4.Mechanical properties of the Q345 steel Yielding strength σs/MPa Tensile strength σb/MPa Ductility δ/% ≥355 490~630 ≥21 Table 5.
(2) The main factor that affects the efficiency of VSR is not the phase constitution of the materials, rater, the grain size plays an more important role.

The analyses on stress distributions and concentration factors of the two joints in different external loadings were made in this paper.
Physical Properties and Parameter.
Stress Concentration Factor (SCF).
[4] Tenglun Zhao: Application of ABAQUS 6.6 in Mechanical Engineering.
[6] Yi Zhang: Finite Element Analysis on Stress Concentration Factors and Stress Intensity Factors of Typical Welded Joints.

Influence of Nitriding Treatment on Practical Properties of Eutectoid Steel W.
Surface hardening, refined microstructure and compressive stress were the three main factors being responsible for the modification of fatigue properties.
Introduction Ion-nitriding is one of the most widely used thermal-chemical methods to improve the mechanical properties of traditional and new materials.
Table 1 and Table 2 list the chemical composition and mechanical properties of the test material, respectively.
The residual stress is another main factor that affects the fatigue strength.

The stability and performance of the web running is one of the key factors of printing quality.
Sun Yuqiu [6] analysis and research paper tape tension control mechanism, arrive at tension control system that tape the influence factors and the problem need to be solved in control.
There are many factors affecting the changes in tension and is a non-linear change.
After import the paper tape’s solidworks file X_T to the Ansys software, define the material properties and parameters, Elastic modulus of 120GPa, Poisson's ratio of 0.3, a density of 1450, meshing solid 187 units.
(2) Established by theoretical analysis and calculation of the paper roll unwinding kinetics model and post-tension control part of the swing roller mathematical model, get several key factors that affect the tape tension, pointed out the key to ensure high-speed web presses is the stability of paper tape

One practical factor often underestimated is the possibility of thermally-induced bone necrosis at the drill site.
The mechanical properties of the cortical and cancellous bones used in finite element analysis are provided by Sawbones and summarized in Table 1.The region on the outer surface of bone, i.e., the surface at radius 4 mm, is assumed to be fixed during the simulation.
Table 1 Mechanical properties of drill bit and bone used in finite element simulations Material Property Density ( kg / m3) Elastic Modulus (MPa) Poisson’s Ratio Yield Stress (MPa) Ultimate Stress (MPa) Specific Heat ( J /kg-℃) Thermal Conductivity (W / m-k) Cortical Bone 1,640 16,700 0.3 157 157.1 1,640 0.452 Cancellous Bone 640 759 0.3 31.0 31.1 1,477 0.087 Fig. 1 Schematic illustration of drill bit and bone contact geometrical model and finite element model Verification The feasibility of the proposed FEM model was confirmed by comparing the difference of temperature rise in a biomechanical test block (provided by Sawbones) and in a finite element simulation during the drilling process.
In this study, the region in which the bone temperature exceeds 47 is defined as the thermal affected zone (TAZ).
The maximum thermal affected zone occurs at the interface of cortical bone and cancellous bone.

Force Analysis of the Middle Wall in Multi-arch Tunnel under Central Hole + CRD Method Li Jun, Wang Zong Lin School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China hitlij@yeah.net Keywords: Multi-arch Tunnel, Force Analysis, Middle Wall, Mechanical Properties Abstract. arch tunnel construction in the presence of construction mechanics often unclear, the lack of systematic design and construction of the theory can learn.
Harbin Clinic Road thesis double-arch tunnel project as the basis, the construction process through its hole + CRD using the finite element simulation analysis and on-site monitoring measurement data processing, engineering arch tunnel song used in the wall study the mechanical properties.
In subway construction, although open-cut construction method is most convenient, but in the bustling city traffic arteries, intensive commercial construction zone, due to traffic conditions, geographical conditions, open-cut construction can not be implemented, and the cover lid down construction dig dug along the building need traffic relief, to some extent, affect traffic.
Therefore, it is necessary to combine the mechanical properties of the actual project arch tunnel in the wall for further analysis, which is an important reference and guidance for total construction of double-arch tunnel.
The wall by the force process also closely related to geological factors and construction.

Zirconia is one of the materials used in prosthetic restoration because of its better physical, mechanical, chemical, and biological properties.
Several factors affect sandblasting, namely particle size, pressure, time, and distance used [12,16].
The bonding of zirconia with this resin cement can improve the mechanical properties of zirconia restorations [7,15,16].
Factors that affect surface roughness in sandblasting include particle size, pressure, distance, and duration of spraying [12,16].
An overview of zirconia ceramics: Basic properties and clinical applications.