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Tab. 1 The frequency of Natural earthquake Magnitude (ML) 0＜ML≤1.0 1.0＜ML≤2.0 2.0＜ML≤3.0 3.0＜ML≤4.0 In total earthquakes 37 241 37 3 318 Compared to the case 11.64% 75.79% 11.64% 0.93% 100% Within the continental plate tectonic deformation and seismicity in the study, focal depth is the study of tectonic activity and tectonic deformation and mechanical properties and mechanical behavior.
Long ditch meiyukou coal mine, coal mine well as part of the body of the tectonic plates, is also affected by the plate tectonic collision compression, cause the regional crustal stress and the redistribution of energy in the body, the elastic deformation energy accumulation over ground bearing capacity, the shell when the external force caused by energy released will be associated with the occurrence of disasters such as earthquakes.
When gathering energy engineering areas affected by mining engineering activities, undermining the balance system will cause the release of energy, the energy will cause mine dynamic disasters.
Because is not affected by the interference of human activities, natural earthquake activity is the most true objective of tectonic activity and the change of stress field.
(4) power mine disasters not only affected by the tectonic activity and the change of stress field, and the thickness of the roof strata characteristics, big mining stress field caused by mining depth and preventive measures, natural earthquake activity results only reflect the tectonic activity and the change of stress field of law, its only for mine power disaster prediction, prevention and control to provide the reference, cannot ignore other factors and human disturbance factors.

This conforms to our previous studies which revealed the antimicrobial properties of denture PMMA resin containing vanillin on respiratory pathogens and oral yeast.
Nonetheless, it is not thought to be an ideal material due to its minor physical and mechanical properties [17].
It occurs by many factors such as an entrap air during mixing, the presence of residual monomer, monomer contraction during the polymerization, and monomer vaporization with exothermic reaction.
The presence of porosities can affect physical, appearance and sanitized properties of a processed denture base.
Oral malodor or halitosis can occur from the exogenous factors and endogenous factors.

Introduction Tool wear is an important problem for micro-milling because it not only affects the surface quality of the work-piece, it also affects the tool life of micro-milling and increases power consumption.
Tool wear is mainly influenced by a lot of factors such as: cutting speed, feed rate, depth of cut, work-piece material, rake angle and flank angle and the edge radius.
Direct methods involve the measurement of tool wear directly by using mechanical, optical or electrical and so on.
Specially, the micro-cutter is very small and the blade wear will have a significantly affect to the machining accuracy.
V=π×Dn/60=3.14×0.127×120,000/60=797.56mm/s (4) Besides, the other parameters are shown in Table3 Table 3 Simulation parameters Tool geometry Tool material properties of carbide Machining parameters Flutes 2 Young’s modulus(Mpa) 682000 Milling depth(μm) 4 Edge radius(μm) 1 Mass density(g/cm3) 12.7 Feed rate (mm/min) 0.6 Rake angle(°) 9.3 Poisson ratio 0.35 flank angle(°) 6.5 Simulation study After establishing the constitutive model, Abaqus/explicity is used to simulate the milling process.

These properties are relevant to different antibacterial applications of the nanocomposite.
Properties of the interphase region are known to be different from the bulk of the polymer [4].
Zhang, Properties of Graphene Oxide/epoxy Resin COMPOSITES, Journal of Nanomaterials (2014), 1-5
Guo, Effects of temperature and frequency on dynamic mechanical properties of glass/epoxy composites, Journal of Materials Science 51 (2015), 2747-2758
Zhang, Properties of Graphene Oxide/epoxy Resin Composites, Journal of Nanomaterials (2014), 1-5

The choice of an optimal method depends on factors such as welded materials, joint geometry, and the welding process.
Factors affecting eddy current response.
A number of factors affect the eddy current result from the probe.
The main factors are material conductivity, permeability, frequency, and geometry.
However, it is affected by different factors such as material composition,heat treatment, and work hardening.

Holographic Storage Properties of Photochemical SiO2-Nanoparticles Material for Visualization News Features Yan Feng1, a 1Department of Media Technology and Communication, Northeast Dianli University, Jilin City, China ayanfeng001@126.com Keywords: Visualization news features; holographic storage; photochemical SiO2-nanoparticles material Abstract.
The excellent photochemical properties of photopolymer material have made them become the hot spot of current for visualization news holographic storage.
However, the shortcomings of common photopolymer materials such as exposure shrinkage and limited refractive index modulation affect the reading and writing properties of their holographic storage.
Faced with such a huge surge in the amount of information, reduced storage capacity of the device to increase the cost of data storage and processing speed has become the key factor driving this revolution.
However, the polymerization reaction is usually causes shrinkage of the material, which is one of photopolymer material intrinsic properties.

Mechanical behavior and bearing capacity of self stress ceramsite concrete filled steel tubes (noted as SCCST) after exposure to fire are experimentally studied.
There is only a few research on the behavior of lightweight aggregate concrete filled steel tubes after exposure to fire, the mechanical performance of the composite columns in the normal condition has been researched by Zhuobin Wei[4], but the post-fire mechanical properties of it after exposure to fire has just been reported by Xintang Wang[5,6].
P1, P2 and P3 refers to the mix proportion with different volume of expansion agent given in Table 2, and T is the temperature of furnace, △t stands for fire duration; is the steel ratio and ξconfining factor.
Table 1 Main correlated factors of specimens Specimens D×ts×L /mm △t /min T / ℃ ξ Z1-P1-T0 159×3×600 90 20 0.074 0.722 Z1-P2-T0 159×3×600 90 20 0.074 0.759 Z1-P3-T0 159×3×600 90 20 0.074 0.912 Z1-P1-T1 159×3×600 90 700 0.074 0.722 Z1-P2-T1 159×3×600 90 700 0.074 0.759 Z1-P3-T1 159×3×600 90 700 0.074 0.912 Table 2 Ceramsite concrete mix proportion (kg/m3) No.
The initial self stress produced in the specimens has some effect on post-fire bearing capacity and ductility of the composite short columns, and the characteristics of longitudinal strain and the circumferential strain of the specimens subjected to fire load are quite different and affected greatly by the furnace temperature and self stress.

Introduction The oriented hydroxyapatite (OHA) has been widely used as implants for bone-repairing and tissue engineering scaffold due to its special properties.
The two major factors were investigated experimentally.
It was reported that the impacts of anionic substituents in HA on the structure and properties of natural and synthetic calcium apatites are obvious.
Temperature is an important factor affecting the oriental growth of HA.
SEM micrographs of obtained HA synthesized at (a) 40 ℃; (b) 70 ℃ Conclusion Both temperature and aging are two major factors that influence the oriental growth of HA crystal in preparation.

Biegler [17] proposed an automated toolpath generation for arbitrary geometries based on metal additive manufacturing properties.
Sun [20] studies the influence of two 316L powder compositions in the repair of parts, focusing on analysing the repaired area's microstructure and its mechanical properties.
This work shows the influence of the angle of the pre-machined trapezoidal grooves in the reconstruction process, analysing the density, microstructure, and mechanical properties of the repaired part.
Mazzucato [23] demonstrates that deposition strategies and laser power directly influence the melt pool's shape and the reconstructed part's mechanical properties.
Sun et al., “Laser metal deposition as repair technology for 316L stainless steel: Influence of feeding powder compositions on microstructure and mechanical properties,” Opt Laser Technol, vol. 109, pp. 71–83, 2019, doi: 10.1016/j.optlastec.2018.07.051

Finally, the debound compact is sintered to achieve desired physical and mechanical properties.
Defects deteriorate the mechanical properties of the final products.
Binder removal is limited by various factors.
It can be seen that the best possible combination of factors are A3, B1, and C1.
Hsu, Effect of backbone polymer on properties of 316L stainless steel MIM compact, J.