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Compared with the mechanical seeders, pneumatic seeders have a broader applicability.
As the mechanical precision seeding device has a strict limit on the shape of the seed and a high damage rate of the seed, along with the complicated structure and cumbersome body, these weaknesses restrict the development of the mechanical precision seeder[3].
When the seeds pass the suction hole, affected by the suction of the negative pressure flow field around the suction hole, the seeds would be absorbed to the suction hole.
The design parameters of seeding device are optimized according to vegetable seeds seeding factors and test results.
[17] Xing Zhanqiang, Gu Song: Properties of Air Suction Type Vegetable Seeder for Tray.

One of the key factors that affect service life of turbine blades is associated with vibration prevention techniques.
Due to lower number of degrees of freedom, this approach can be advantageously used, for example, for geometric properties optimization because of less time-consuming computation.
Míšek, Use of cyclic symmetry properties in vibration analysis of bladed disks with friction contacts between blades, Procedia Engineering 96 (2014), pp. 500-509
Yokoyama, Free vibration characteristics of rotating Timoshenko beams, International Journal of Mechanical Sciences 30 (1988), pp. 743-755
Rixen, Mechanical vibration, John Wiley and Sons, Chichester, 1997.

The A, D and E samples’ low living cells was because of two factors: First, the higher volume compared with B and C samples making the cells physically damaged while it’s being poured to a microwell plate; Second, the multiple clean-up process can also wash out the living cells, which making Elisa Reader unable to give a good result [11].
The addition of chitosan to alginate hydrogels unquestionably influences with the numer of astrocytes attached to hydrogel surface as well as affects the event of astrocyte colony [2].
This polyelectrolyte can change hydrogel mechanical behaviour by advancing chain entanglements and diminishing structural cross linking [2].
Mooney, Alginate: properties and biomedical applications, Prog.
Ye, Microstructure and properties of alendronate-loaded calcium phosphate cement, Mater.

Two classification methods for coarse recycled aggregate used in asphalt concrete were investigated in this paper, respectively classifying by coarse recycled aggregate properties and asphalt concrete properties.
Results and Discussion Classifying by Coarse Recycled Aggregate Properties.
Classifying by Asphalt Concrete Properties.
Though the apparent specific gravity, water absorption, crushed value, Los Angeles abrasion value and brick content of coarse recycled aggregate affect the properties of asphalt concrete, it is that a general property of coarse recycled aggregate that was exhibited in asphalt concrete.
[5] Julian M.B., You Z., The Mechanical Properties of Asphalt Mixtures with Recycled Concrete Aggregates, Construction and Building Materials. 24 (2010) 230-235

The results of properties indicate that with increasing mass fraction of B4C+Ti+C in combustion systems, the relative density and fracture toughness of TiB2-TiC composites are all among 97%~99% and 6.5~7.1 MPa·m1/2, respectively, and the Vickers hardness and flexural strength are increased gradually to the maximum values of 28.6GPa and 615MPa, respectively.
The high processing temperatures adversely affect the microstructure due to grain growth and also lead to high production costs.
The dependences of relative density and mechanical properties of TiB2-TiC composite ceramics on the content of (B4C+Ti+C) were shown in Fig. 7, respectively.
In terms of the literature [3], the key factor controlling the densification process of TiB2-TiC is the liquid phase formed in the products.
The hardness of the ceramics is dependent on the elastic modulus of the ceramics at room temperature, whereas the elastic modulus of the ceramics is a function of the elastic properties of the phases and their respective volume fractions [6].

As the reverse of imaging process, the aim of imaging process is to recover physical properties of 3D scene such as the shape, location, motion from noisy and distorted 2D project images, so as to explain and describe scene well and to perceive, identify and understand 3D scene of  the external world.
Matching algorithm of Hausdorff distance based on layered –searching method The process of camera CCD’s image can be interrupted by all sorts of factors and the outputting noise can cause fluctuation of CCD image element’s outputting signals.
Besides,different imaging time, angles, distance and other factors can also cause image’s distortion.
The improved has considered all sorts of factors: the prvious factor is covering facotr which can solve covering problems by choosing Parameter probably; the latter can order the rest points and get “partial” average value after rejecting the influence of outliers by choosing Parameter probably.
China Mechanical Engineering. 2004,15(17)：1553-1556

Experimental Device and filler properties.
Considering these factors comprehensively, the running period in this experiment is flooding 1d and dry 2ds.
The reason is that wastewater flow through the constructed rapid infiltration system by gravity, the pollutants were adsorbed by the first contacted materials, so the upper site o f materials were the mainly position that adsorbed pollutants through mechanical filtration and adsorption.
Clogging is one of the main problems in constructed rapid infiltration system, which can affect the water column and the outlet water quality, also the life span of the system.

While the primary purpose of large plastic deformation studies has been to reduce grain size of the material in order to achieve the desired improvement in the mechanical properties by the above said methods, there seems to be some practical limitation in the achievable grain size in bulk engineering components.
These factors significantly affect Eq. (1) and the predicted thickness deviates considerably from the actual thickness.

These factors, on turn, always tend to a further increase of deformations of the soil body.
The significant region affected can be considered of a width twice the excavation depth.
Main physical and mechanical properties Soil Compression modulus Ea (MPa) Internal friction angle Ф (°) Cohesive force Cu (kPa) Status Poisson- ratio μ Seam thickness /7section [m] Miscellaneous fill 3.5 10 4 Loose-Slightly dense 6.20 Silty clay 6.8 16 30 Plastic 0.32 4.45 Strongly weathered slate （120） 30 60 Very soft rock 0.26 5.45 Weathered slate 3000* 32 75 Soft rock - softer rock 0.23 11.30 Slate breeze 5000* 37 400 Softer rock 0.20 10.40 Note: the data showed in brackets was deformation modulus, and the data with “*” was elastic modulus Monitoring results. 1) Buildings settlements The monitoring results are shown in Figure 1, 2, 3, from which we can deduce: A.

Because of the development of micro-electro-mechanical system (MEMS) technology and the increasing need for integration, the electrokinetic microfluidics has tended toward the multilayer devices.
But several roadblocks preclude the widely application of them such as the complex fabrication process and friable properties.
By the research of von Smoluchowski and Rice, there are several factors would affect the electroosmotic flow velocity include: solid surface Zeta potential, dissolved fluid medium viscosity, dielectric constant, the electric field strength and so on [20-21].