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It has gained substantial interest in part because of its good mechanical and thermal properties, high exciton binding energy (~60 meV), low phonon energy (<437 cm-1), high density (~5.61 g/cm3), excellent characteristics in optical, piezoelectric, gas sensitive, pressure sensitive, etc. [1-5].
The optical and structural properties of the films were characterized and investigated.
Film density were influenced by many factors such as substrates type, substrates temperature, incident particles energy and sputtering cavity pressure, ect.[10].
ZnO stoichiometric ratio direct affect the ultraviolet emission property [15].
Properties of the deposited thin films were studied by the prism coupling method, XRD and RBS technique.

Temperature has smaller effects than strain rate on the evolutions of the microstructures and mechanical properties.
The microstructures and mechanical properties are affected by processing methods and loading conditions.
In their studies, they clarified that nano twins played a vital role during DPD and subsequent treatments and strongly affect the properties of the metals.
Our own calculations of Schmidt factors for slip systems and twin systems lead to same results.
Temperature has smaller effects than strain rate on the evolutions of the microstructures and mechanical properties.

Space properties of Effects of slope stability by Underground mining Shiguo Sun 1,a, Peixin Dong 1,b 1North China University of Technology Beijing China assg918@163.com, bdongpeixinlk@163.com Keywords: open pit combined underground mining, Space attribute, Superposition role, slope stability Abstract.
And the stress field change of the slope body is the result of two mining factors comprehensive stack.
Considering from the slope stability state, underground mining factors need to be increased, and the size is determined according to the two mining comprehensive stack results.
At the same time, the parameter value still depends on the combined auction of many factors, such as mining method, roof management method, geometry size of mining area, the distribution of geological structure, rock strength and so on.
It can be seen from the stability factor in the expression, the main factors within the influence scope areσ1，σ2，σj1，σj2, which means i1，i2，ε1，ε2.

It is, therefore, a critical issue to identify the failure mechanism and evaluate the strength properties of brazed joints.
The base and brazing materials are C1220-OL and BCuP-6, respectively and their properties are already reported in previous study [3].
It is, therefore, reasonable to infer the failure of brazed joints is caused by not only the internal flaws but also other factors.
For understanding the strength behavior of brazed joints with these factors, three dimensional finite element analysis is performed.
Version 2001 (Los Angeles, USA 2001) [6] JSME, The Great Encyclopedia of Mechanical Engineering, B4(1987) p. 63

Recently, zirconia materials are getting much attention for dental implants because of its toothlike color, mechanical properties, good corrosion and biocompatibility.
These materials have attained main stream use because of their excellent biocompatibility, favorable mechanical properties, and well documented beneficial results [3].
Choosing the material for implantation and dental restoration depends on several factors, such as: device functionality, type of interaction with the host organism, and duration of use (short-term biocompatibility, long-term biocompatibility) [13, 14].
The state-of-the-art technological ceramics will also be used that exploit in engineering applications is for their mechanical properties in particular.
Because it does not change its properties in the oral cavity and is bioinert, which not affect tissues, it has been used in dentistry for up to 15 years.

The mechanical properties of the composite materials improve significantly, i. e. higher specific strength, more fracture toughness, lower density and better resistance to corrosion [5].
Delamination is one of the common damages during the drilling of composite panels which affects the mechanical properties of the structure.
Kevlar fiber composites, which possess excellent mechanical properties, are widely used in military industries, aircraft, and aerospace [13, 14].
Putra, Mechanical properties of glass fiber reinforced polyester resin for use as the wall of the Acehnese boat Thep-Thep, IOP Conference Series: Materials Science and Engineering. 523 (2019) 012080
Huang, Fabrication and properties of carbon fibers, Materials. 2(4) (2009) 2369–403

Chemical enterprise major hazards identification Li Zhao 1, a Naiyan Zhan1,b 1 School of Municipal & Environmental Engineering,Jilin Jianzhu University,Changchun, P.R.China a 925089297@qq.com, b velon0066@sina.com Keywords: Dangerous and harmful factors analysis; Identification of major hazard installations; Major hazards analysis Abstract.
Dangerous and harmful factors in the process of MTBE production analysis Dangerous and harmful factors of isobutylene production process analysis.
This device has a lot of rotating equipment such as pump, if these devices lack reliable protective measures or protective facilities damaged, can happen to squeeze grinding, involved in, such as cut thorns of mechanical damage to operators.
Highly reactive polyisobutene production process dangerous and harmful factors analysis.
Compression refrigeration process and catalyst preparation are flammable material in the device, so once leak easily fire explosion.High-speed operation of the compressor, as a result of improper operation or lose control of various mechanical injury accident happens even explode[4].

Geothermal is known as renewable energy and a clean energy source but inherent properties make this energy clean.
In this report, the types and factors of corrosion observed in geothermal systems and the conditions of metal and non-metallic materials found in geothermal systems were considered.
Comparison Cladding VS Carbon Steel and CRA Steel Cladding Carbon Steel CRA Steel Service Life Longer Shorter Longer Safety Anti Corrosion + High Mechanical Property High Mechanical Property Anti Corrosion Weight No Additional Corrosion Allowance Needed Additional Corrosion Allowance Needed Heavier, due to lower mechanical property Purchase Welding Wire in Stock Easy to Purchase Difficult to Purchase and Long Delivery Cost Impact If you consider long term cost Low Cost Expensive As shown in Table 3 above reference from a study conducted by Yu et al., the importance of corrosion resistance alloy relative to the carbon steel pipeline was demonstrated in mechanical strength, cost, and other factors (2014).
These are chosen for their corrosion resistance and outstanding mechanical properties.
A correct material selection with suitable mechanical, chemical and corrosion resistance properties is required to assess properly.The data gathered above from similar geothermal energy utilization cases Alloy 625 could help improve plant uptime by reducing corrosion-related problems affecting piping and equipment in contact with geothermal brine.

Structure and Mechanical Properties of Composite Layers Prepared by Laser Alloying of Aluminium Alloy W.
During the laser treatment, a composite layer with much better mechanical properties was obtained comparing the base material.
The mechanical and physical properties of aluminium alloys make its application constantly increasing.
The presence of moisture often results in a significant increase in porosity and surface roughness, which adversely affects the strength properties.
In order to investigate the mechanical properties of the obtained layer, the hardness measurements were used.

The experimental results showed that the impurity and flaw of weld area were the main factors for the failure of ERW seam weld in high internal pressure.
The mechanical properties of tensile strength and impact absorbing energy were analyzed by UH-F500KNI and JBN-500, respectively.
The mechanical properties of tensile strength and impact absorbing energy are shown in Fig.4 and Fig.5.
The above experimental results indicate that the mechanical properties were clearly influenced by the microstructure.
The flaw and impurity of welds lead to a mechanical properties decrease at different temperatures.