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The diameter of latex grain is an important index of good or bad performance of the emulsion[1-3].
Emulsifier concentration [s] and the number of micelles [Nm] has the following relationship: [ Nm ] ∝ [ s ]0.6 To obtain more latex number, small particles diameter, the amount of emulsifier is the more the better.
Both of them would cause the number of latex particles increased, the diameter decreased.
The initiator concentration was too low, resulting in too small number of free radicals and latex particle increasing.
This is because when other conditions were certain, the number of the latex particles was certain.

The plan allows studying the effect of each factor on the response variables, as well as the effect of interactions between factors on the response variable at the least number of experiment runs.
When a visible failure area was detected, the number of thermal cycle was recorded and defined as the number of cycle to failure.
Fig 5(b) shows the number of thermal cycle when peeling of the coating layer was observed.
With the increasing of thermal cycle, the number of spalled pieces increases.
This cracks spread to the center of the surface and take place round the grain of splat (shown in Fig. 7 ).

With the increase of Nd, the number of spherical I-phases is reduced and rod-like phases increased.
There are a large number of rod-like phases in the matrix and spherical I-phase is correspondingly reduced.
At the same time, there is different distribution of the enrichment of Nd atoms on every crystal plane of formed tiny quasicrystal grains.
Adding 5% Nd, there is the largest number of spherical I-phases distributed evenly in the matrix.
With the increase of Nd, the number of spherical I-phases is reduced and rod-like phases increased

The commonly used metals are polycrystalline, because each grain orientation is different, apart from this, the microscopic and macroscopic defects such as the dislocation, mixing and second phase exist, there is anisotropy and heterogeneity in polycrystalline.
And the fatigue damage degree of base is proportional to the number of stress cycle.
We assume the number of stress cycle which is reached when the base is damaged under a certain level stress is.
The number of stress cycle is.
(2) As Eq.2 shows, is the number of stress cycle, is the number of stress cycle when the base is damaged.

A fabric made of jute, a natural occurring fiber, was used as reinforcement in a fine grained cementitious matrix with a low content of calcium hydroxide.
As can be observed in Fig. 4, with the increased number of layers, there is an increase of cracks.
The composite reinforced with 3 layers presented six cracks and the composite with 5 layers eleven cracks. 3 layers 5 layers Matrix (a) (b) Figure 4 – Influence of the number of layers on the tensile behavior of textile cementitious composites reinforced with jute fabric: (a) tensile stress and crack spacing vs. strain (b) photos of composites reinforced with 3 and 5 layers of fabric without treatment.
The composite with 5 layers with fabric impregnated by 50 min had the greatest number of cracks and smaller spacing. 5 layers treated by 10 min 5 layers without treatment Matrix 5 layers treated by 50 min (b) (a) Figure 5 - Influence of the treatment with polymer on the tensile of textile cementitious composites reinforced with jute fabric: (a) tensile stress and crack spacing vs. strain (b) photos of composites reinforced with 5 layers of fabric with treatment.
The composite with 5 layers with fabric impregnated by 50 min presented the greatest number of cracks with lower spacing.

As for Reynolds number, a more accurate explicit equation proposed by Zigrang and Sylvester has been used here.
The same terminal velocity equation has been used in Das’s model to track the movement of particles, but there are some differences in the determination of Reynolds number.
A correlation is used by Das for the determination of the Reynolds number as a function of Archimedes number
(3) Where The latter is the dimension-less Archimedes number.
Free settling tests of 25 samples, which is narrow density and narrow size level average grains, were undertaken.

Abstract: Study on the effect of liquefaction mechanism on the performance of ECC, adding rubber powder mesh size effect on the performance of ECC, respectively, to 40 mesh, 60 mesh, 80 mesh and 100 orders at the same content of rubber powder and 40 mesh in different dosage on ECC compressive strength, flexural toughness was analyzed, results show that: the use of the mechanism of liquefaction of mixing rubber powder in cement based materials, with the increase of ECC number increased ductility, at the same time reduce the compressive strength is larger, rubber powder content in 12%, the comprehensive effect is ideal.
Sand: the sand grain size is 0.22~0.37mm.
a) b) Figure 2.a) Compressive strength of G1~G4 b) Compressive strength of G1‘~G4‘ Conclusion 1) the liquefaction mechanism to adjust the ECC ratio, thus liquidity or cement matrix and reducing segregation, achieve high ductility cementitious matrix and multiple cracks and thus more easily. 2) rubber powder mixed with larger mesh size, compared to the number of small can more easily achieve ECC high ductility, but the maximum carrying capacity is greatly reduced, the compressive strength has greatly decreased; with the increase of rubber powder mesh, ECC corresponding improved ductility.

In the annealed specimen, relatively large particles of Fe16N2 were formed with low number density, while in the deformed specimens, dislocation substructures due to cold rolling were disappeared by ion-implantation and fine particles were densely formed.
Number density of the �" particles in (b), cold rolled with 90 %, is obviously higher than that in (a), annealed specimen.
On the other hand, in the annealed specimen, interstitial iron atoms firstly diffuse to sinks, such as surface and grain boundaries, remaining vacancies and nitrogen atoms.

Introduction In the effective short fatigue crack (ESFC) criterion proposed by Zhao et al. [1], the definition of ESFCs density is the average number of micro-cracks per unit area in the initial zone of dominant ESFC (DESFC) in MSC stage.
Compressive residual stress and heavy plastic deformation imposed on the surface grains due to cold work make it difficult for the cracks to nucleate and propagate at the rolled surface [7, 8].
C1 and C2 in Fig. 3b coalesce with each other and become a new crack C1 in Fig. 3c, the total number of micro-cracks increases stably.
Crack numbers of Fig. 3d-e are 9 and 11, respectively.
Compressive residual stress and plastic deformation are imposed on the surface grains and make it difficult for the cracks to nucleate and propagate at the rolled surface.

It requires the investigator to live together with the investigated objects for some time, and to observe, to understand and to be awareness of their social as well as cultural from it. 1.2 Research object On March 23, 2011, we chose Huofeng village of Quejia town as our research object, and selected a number of local residents to face-to-face interview while we observed.
Obviously, the interests of farmers of relatively weak competitiveness are severely squeezed. 2.2 Existing problems First, returning farmland to forest makes the local ecological environment greatly improved, the forest coverage rate significantly increased and wildlife species and amount apparently increased, but also leads to a surge in the number of grain-eating birds, which causes the prominent phenomenon that “human fighting birds over food”.
The nation pays attention to agriculture, rural areas and farmers, and gives out a certain amount of agricultural subsidies, but “agricultural subsidies” is a complement to the plot of farmlands, and there is no subdivision of whether to grow grain, so some farmers live the farmlands fallow to work outside the home on the one hand, and on the other hand still get the agricultural subsidies.
After a number of years, they will go back home use the accumulation to rebuild their houses.
A large number of young labor outflow causes seriously lacking of young adults, and the average age of the village leadership is about 60-year-old.