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Emissions of particulate matters represent one of the main environmental factors in quarrying activities.
These factors can influence the chemistry of the soil and health of surrounding plants, the meteorological and local microclimate conditions, as well as penetration rate of the dust into vegetation.
Behaviour of particulate matters depends on properties of particles and also prevalent weather conditions.
The most important atmospheric factors are wind speed and direction.
Also land profile is very important factor.

Each species requires optimum temperature and treatment duration without affecting its properties.
Also, the heat treatment process can alter the treated wood's cell morphology, which can affect the other properties of wood [18].
In addition, there are significant differences in the mechanical properties, especially bending strength, reduced in thermally modified wood [32].
The moisture content, relative humidity, and environment temperature are the main factors influencing fungi growth on wood.
Wood – Sampling sample tress and logs for determination of physical and mechanical properties of wood in homogenous strands. 79.040 wood, sawlogs and sawn timber. (1982-05)

The most directly affect the construction interface performance and expressive technique factors is the building materials.
Material expression is the most important authenticity, Ma Mi expresses the mechanical properties of building material and structure, and not by surface material to pack it.
Along with the in-depth understanding of the nature, material mechanical properties in materials true expression become more and more important position, mechanical logic must be by means of specific structure form can express.
While the new structure makes the mechanical properties of materials and the potential performance gets more sufficient hair.
Play to their nature, not only the full performance of materials and natural texture, but also good at the mechanical properties using them.

Barkhausen noise(BN) and the complex permeability were compared with the mechanical property parameters which were measured by the Vickers micro hardness, tensile and Charpy impact test.
The results of different neutron doses showed noticeable fractional changes in the magnetic parameters, correlated with the mechanical properties of these specimens as well.
Some of the earlier studies succeeded in correlating the magnetic measurements with the mechanical property or microstructural changes on the grain sizes, residual stress, or heat treatment [1,2].
Many studies have been performed regarding the effects of neutron irradiation on magnetic properties.
Microstructural factors such as grain size and dislocation density affect the hysteric magnetic properties of steel because the microstructure affects the domain wall movement and pinning.

The GDK and PKN hydraulic fracture models established by Geertgma, Perkins and so on[3-5] lay the foundation for hydraulic fracture design and fracture propagation analysis, and domestic scholars have studied the mechanism of hydraulic fracturing from the angle of coal and rock physical and mechanical properties, ground stress, control factors and so on, which have provided theory support to solve the problem of coal seam hydraulic fracturing.
Because of the differences of coal seam occurrence condition, physical and mechanical properties and stress environment, crack condition, extension rule and the fracturing effect of hydraulic fracturing are also different.
According to upper equation, it can be known that the influence factors of initial fracturing stress of soft coal seam are mainly Elastic modulus, Poisson's ratio, internal friction Angle, residual strength, deformation and the selected yield criterion.
And these factors’ effect weight to initial fracturing stress must exist discrepancy.
To have a more intuitive understanding of the upper influence factors, the author set the physical and mechanical parameters of 7# coal seam in certain coal mine as calculation basis, and has an analysis to the established calculation formula of initial fracturing stress in the essay.

Vibration fatigue reliability of Lead and Lead-Free Solder Joint by FORM/SORM Ouk Sub Lee 1, a, Man Jae Hur 2,b , Yeon Chang Park 2,c and Dong Hyeok Kim 2,d 1 School of Mechanical Engineering, InHa University, Incheon, Korea, 402-751 2 Department of Mechanical Engineering, InHa University, Incheon, Korea, 402-751 a leeos@inha.ac.kr, bmrgio@korea.com, c epalthek@daum.net, dkdonghyeok77@yahoo.co.kr Keywords: Solder Joint, Reliability, Failure Probability, Vibration, FORM, SORM, MCS Abstract.
It is well-known that the vibration significantly affect the life of solder joint.
The main factors were the number of vibration and temperature to influence the vibration fatigue of solder in the package.
It was pointed out that the number of vibration may affect the life of solder joint [1].
Using a common torsion fatigue machine that has been employed to estimate the shear fatigue properties of a material, vibration is induced to a package.

Molecular Dynamics Study of Mass Transport Properties of Liquid Cu-Ag Alloys U.
Introduction Copper and copper alloys have attracted much attention for their commercial demand and are often used at temperatures where diffusion processes affect their properties.
Diffusion can incur significant changes in mechanical and electrical properties through compositional changes at interfaces, surface alloying, interface degradation and so on.
This potential not only accurately reproduces various properties of crystalline Ag but also gives a realistic description of the principal properties of liquid Ag, even though no liquid data were included in the fitting of the potential.
Although properties used in the fit refer to 0 K temperature (except for thermal expansion factors of pure Cu and Ag) and do not include liquid configurations, the potentials demonstrate good transferability to high-temperature properties.

The properties of metakaolin-based materials were investigated.
The properties of the materials were investigated using XRD, FTIR, and SEM.
The adsorbent properties of the studied material were investigated.
Ueng, Main factors affecting mechanical characteristics of geopolymer revealed by experimental design and associated statistical analysis, Constr.
Huang, M.Han, The influence of a-Al2O3 addition on microstructure, mechanical and formaldehyde adsorption properties of fly ash-based geopolymer products, J.

The need for plastic caused by its long usage time [2] and excellent mechanical properties.
These factors will make the cross-link between the cassava starch more tightly [21].
Amylose can improve mechanical properties [13], the improving mechanical properties of which are hardness.
So improving density can improve the mechanical properties of bioplastic.
However, in this research the improve in mechanical properties is hardness show in Figure 1.

Comprehensively considering the lateral force, axial force, bending moment and other factors of the spring section, .
Then define the spring material according to the physical and chemical properties of the given 17/7PH steels under the status of ASTM A313-631 CH-900, and load it in the finite element model.
According to the characteristics of the spring and its shear stress, the regression model consisted of the third-order polynomial expression should be able to reflect the regression properties of the maximum shear stress.
Figure 3 The predictive error interval when the confidence is 99% (the model with the maximum shear stress) It has been observed from this model that the most active factor affecting the inner stress of the spring is the spring wire diameter, while the pitch plays only a small role in the shear stress of the spring.
Wahl, “Mechanical Springs 2nd Edition”.