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Among them, the sand storm refers to carrying storm formed by a large number of grains of sand blowing near ground; dust storm is a storm formed by a large number of dust and particle material involved in high altitude by the Strong wind.
Finally, when dust and haze weather occurs, a large number of sand and dust storms shading, it may even cause Dysthymic disorder by the mood melancholy.
Relevant conclusions Through survey to residents in Baicheng city, it can preliminarily conclude that sandstorms bring serious harm to residents’ health in Baicheng city, but there are still a significant number of residents who have insufficient understanding for the harm and protection of sandstorms.

In contrast, geo-textile functions through a number of ways, including reinforcement through interaction friction, separation between sub grade soil and base course material, filtration, and drainage [1].
Kuo-Hsin Yang et al [5] showed that the shear strength of reinforced clay increased as the number of geo-textile layers was increased.
The mobilized tensile strain and force of the geo-textile increased as the number of geo-textile layers, thicknesses of the sand layers, and confining pressure were increased.
No Description Particulars 1 Field density 1.636 g/cc 2 Water content 3.33% 3 Specific Gravity 2.56 4 Grain Size Analysis Gravel 0.2% Sand 96.8% Silt and Clay 3% 5 Classification SP 6 IS Light Compaction OMC 14% Maximum Dry Density 1.8g/cc 7 CBR at OMC 2.11 Table 2: Typical Range of Properties for Geo-textiles Properties Particulars Physical Properties Specific Gravity 0.9 - 1.7 Mass per unit area 135 – 1000g/sq.m Thickness 0.25 – 7.5mm Stiffness 0 – 25000 mg-cm Mechanical Properties Tensile strength (grab) 0.45 – 4.5 kN Tensile strength (wide-width) 9 – 180 kN/m Confined tensile strength 18 – 180 kN/m Seam strength 50 -100% of tensile Cyclic failure strength 50 -100% of tensile Burst strength 350 – 5200kPa Tear strength 90 – 1300N Impact strength 14 – 200 J Puncture strength 45 – 450 N Friction behaviour 60 -100% of soil friction Pullout behaviour 50 -100% of soil friction Hydraulic Properties Porosity (non woven) 50 – 90% Percent open area (woven) 0 – 36 % Apparent opening
Increasing the number of layers has increase CBR value. 3.

Aiming at avoiding problems of uncertainty, coarse-grained, diversity and dynamic in the process of services resource combination, a hierarchical model based on the hierarchical manufacturing implementation processes was firstly proposed.
Using xjk to express the serial number ‘h’ of cloud service RSSjkh in RSSjk, the solution of hierarchical cloud service combination(S) can be represented as Equ.4:

The reason is that a large number of fatigue failures have been observed beyond 107 cycles in high strength materials and at stress lower than the conventional fatigue limit [1].
(1) Where Ni,s is equal to the total number of inclusions located at the surface, Ni,v is the total number of inclusions in the whole specimen volume, di and d are the size of inclusions and the diameter of specimen, respectively.
(2) Where Ni is the number of cycles for subsurface crack initiation and Ns is the number of cycles for surface crack initiation.
In dry air, kw ≈1.is the dimensionless unit increment of energy for dislocations in cycling. ψ= r/l is the ratio of inclusion radius r to grain radius l. φ= ∆σ/2k is the ratio of stress amplitude ∆σ to the resistance of dislocation movement k.
What’s more, some other models on the formation of FGA have been proposed, for instance, the “hydrogen embrittlement-assisted cracking” by Murakami et al. [1], the “depressive decohesion of spherical carbide” by Shiozawa et al.[4], the “cyclic compression between crack faces” by Nakamura et al.[22], and the “grain refinement and local stress decreasing” by Grad et al.[23].

Clustering is an important tool for data analysis, unsupervised learning, data graining and information compression.
The function number of KP is () and the function number of KP is ().
(1) The LKP of and is and ;,,is the functional perfection degree, functional number and level number of KP respectively.,, is the functional perfection degree, functional number and level number of KP respectively.
is the same functional number as that of KP in .
Let , i.e, the level number of LKP is the same.

Computation procedures produce a single number output (e.g.
The standard output of ANOVA is two numbers: a quotient (usually denoted as F) asymptotically convergent to F distribution and an associated pValue (also often denoted as pV or pVal), evaluated from this quotient and two degrees of freedom related to a number of groups and a number of the total data.
The microstructure of the IN 713C consists, regardless of the casting parameters used, of γ-grains, interdendritic (γ+γ’) eutectic, (γ+MC) eutectic, carbides and coherent γ’ precipitates distributed uniformly within the γ-matrix.

The grain phases and the fracture surface micrograph were analyzed with XRD and SEM, respectively.
Moreover, the number of pores increases linearly with the graphite content because the place of graphite particles is substituted for the voids after they are burned out.

Optical (OM) and scanning electron microscope (SEM) analyses were carried out to elucidate actual particle size and volume fraction as well as matrix grain size and distribution of intermetallics.
Indeed, the fracture surface corresponding to initial fatigue crack growth mainly developed through the matrix and intersected only a relatively low number of alumina particles (Fig. 7a).
Moving on toward the region corresponding to final growth stage, the fracture surface underwent a progressive modification with an increasing number of fractured ceramic particles exposed on the crack path, as depicted in Fig. 7b.
Their results highlighted that ceramic particles in MMCs are much stronger barriers for short cracks than many other microstructural defects such as grain boundaries and that the threshold for the short crack growth (i.e. the fatigue limit) could be directly related to the ability of the particles to trap the crack-tip cyclic plasticity.
· On the contrary, in the high-cycle fatigue regime, during early stages of crack propagation, the crack path mainly develops through the matrix and intersects only a relatively limited number of alumina particles.

The scrapers can remove of melted fine-grained rocks (sandy loam, loam, clay) in natural deposit, as well as pre-loosened strong (dense, semi-scaly, rocky) rocks [3].
Besides for large inclusions in coarse-grained or loose rock, it is possible to jam these elevators.
The use of an elongated hopper is rational from the economic point of view: an increase in the volume of the hopper leads to a reduction in the number of movements of the scraper for the transfer of rock mass.
Based on the repeated experiment number for laboratory conditions equaled to 5, and taking into account the constant error of the measuring apparatus ±3%, the average experimental error should not exceed 10…14% [22].
The determination of the most economical set of machines for specific mining conditions is a fairly long and time-consuming process involving a number of repetitive calculations.

The remelting zone between layers ensures good metallurgical bonding between adjacent layers and enables the newly formed grains to grow along the deposition direction through epitaxial growth on the solidified layer.
The variation of the phase-field variable with time can be obtained by solving the phase variation of the free energy functional: ∂ϕα∂t=-β≠αiMαβiδFδϕα-δFδϕβ (6) where Mαβ is the interfacial mobility and i is the number of phases in the grid.
In order to solve the chemical free energy, it is necessary to analyze the Gibbs free energy of the system: G=α=1nNαi=1uμαicαi (7) where Nα is the number of phases and u is the number of alloying elements.
In the calculation domain, the number of cells/dendrites in the steady-state growth was counted along the X direction (i.e. perpendicular to the growth direction), and then the average primary dendrite spacing under different solidification conditions was estimated by dividing the width of the calculation domain by the number of cells/dendrites.
The simulation results show that even if the cooling rate is as high as 1.33 × 106k/s, the segregation of Nb will still occur between the cellular grains.