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Minimizing downtime in machine tools is one of the factors that determine the performance increase of the production processes involved.
Machining processes can be stopped by needing to change the tool as a consequence of the loss of their initial properties due to the wear process that suffer during machining.
In the case of machining, the machine downtime is one of the most critical factors, since these time intervals -in which the machine does not produce- make to decrease the production process performance [1].
However, one of the most common causes of machine stops undesirable (and therefore of the production) is due to the loss of the initial properties of the tool, both in terms of its geometry as in related to their physicochemical properties.
Lower speeds are the most affected by this effect, since at low speeds, appears the greatest amount of material adhered on the rake face.

Intorduction The problem of soft rock is a big problem to affect mine production.
Physical and Mechanical Properties.
After first supporting of large deformation and constant resistance, freed some expansion energy and plastic deformation properties, make it into a relatively simple IIBCDIIIE type.
Specific mechanical conversion and support measures are shown in Figure 1.
Analysis of safety and economic benefit The supporting technology eliminated unsafe factors when using traditional bolting and shotcreting or shed supporting, put an end to falling phenomenon, reduced roof falling and floor heave amount.

During the process of construction, the tunnel will pass through coal-bearing stratum and fault fracture zone with poor engineering geological properties.
The special mechanical properties of the soft layer are low-intensity, easy to soften when encounter water and have poor combining between layers (especially the coal seam roof and floor).
The fragmentized rocks will accumulate inside the goaf after the roof collapses, thus the rock mass of break zone has large gap, with better connectivity and poorer properties than the general surrounding rock.
In all, the affecting degree of underlying goaf is higher than overlying goaf.
In all, the affecting degree of underlying goaf is higher than overlying goaf.

Furthermore, certain mechanical properties in the area of the plate fracture, especially the fracture elongation are reduced [5].
All relevant casting parameters were modified in certain ranges during the casting trials to identify all possible influencing factors for the appearance of plate fracture.
Furthermore, samples with a hypo-eutectic chemical composition (upper shelf section) were mainly affected by plate fracture
By using basic trial parameters sample C never was affected by plate fracture.
Therefore, it appears to be very reasonable, that especially the temperature gradient and as well the velocity of the liquid/solid interface are the main influencing factors for the formation of coarse dendrites [6].

It was researched that how dust diameter, moisture content and temperature affected the specific resistance.
Table 1 Test-bed measurements reproducible test Temperature（°C） The first data ρ(Ω·cm) The second data ρ(Ω·cm) Relative deviation（％） 10 5.2×1011 4.9×1011 0.058 20 0．98×1012 1.01×1012 -0.031 30 1.04×1012 1.12×1012 -0.077 40 8.3×1012 7.8×1012 0.06 As can be seen from the above data, the test has good data reproducibility Refer to national standard for test methods of dust properties in Part X（GB/T16913.10－1997）[13,14,18], drying the dust samples at the temperature of 105°C for 4h.
Working receptivity is affected by many factors such as temperature, humidity, and the ingredients of dust and so on.
To determine whether the ESP could deal with such dust, many factors that can affect the receptivity should be considered.
The results of study also shown that the particle size of dust have little impact on measured receptivity, temperature and humidity are important factors what affect the wood dust more, and these two factors have interrelated impact on the receptivity of dust.

For practical modeling purposes, we consider agents to have certain properties and attributes: An agent is autonomous and self-directed.
Like satellite is one of the most dicisive factors in the space object system, satellite agents is to be forcus in our ASTS model.
Satellite agents own its properties and its behavior rules(see Table I).
The Properties Of Debris Agents Property Description Orbit Define a satellite's orbit, including propagator, coordinate system, orbital elements and time parameters.
The Properties Of Facilities Agents Property Description Position Define the location of the facility using one of several available position types.

According to its actual properties when is loaded, this mechanism is simplified as shown in Fig. 1.c.
Safety factor of cassette and other key components is 10 in general analysis[5].
Bottom cassette of plate roller leveler can affect leveling capacity heavily.
Yang: Mechanical & Electrical Engineering Technology, Vol. 34 (2005) No.2, p.51.
Huang: Rolling Mechanical Design (Metallurgy Industry Press, China 2007).

Use BP Neural Network set up the Corrosion Prediction Model of Low Temperature Parts of Atmospheric Pressure Device Yu guang Fan1,a, Zai dong Piao1,b, Bing Chen1,c, Hong xian Lin1,d, Yang Yang1,e 1College of Mechanical Engineering, Xi'an Shiyou University, Xi'an Shaanxi, China, 710065 aygfan@xsyu.edu.cn, bparkzd@sina.com, cbchen@xsyu.edu.cn, dlinhongxian@xsyu.edu.cn, e17276987@qq.com Keywords: Atmospheric pressure device, Neural network, Corrosion, Predict Abstract.
Among them, the corrosion of the low temperature parts of atmospheric pressure device is seriously affected the safety of the oil production, also it is the main corrosion of atmospheric device.
The corrosion of the atmospheric pressure system affected by various factors, the related parameters are following: ①Production process parameters: pressure, temperature, flow, liquid level, velocity, material composition, etc.
Cl-, H2S, PH value are often the main factors of the atmospheric pressure system corrosion; ③Corrosion inspection parameters: the corrosion potential, the valence and the content form of the iron of the corrosion products, the changes of the equipment thickness, resistance or the variation of mechanical properties, etc.
0.1614 0.0895 0.0601 23 8.88 71.04 45.00 2.81 0.8744 0.4441 0.6289 0.7350 24 8.84 56.86 69.56 0.28 0.8651 0.3385 0.9760 0.8437 25 9.31 39.10 7.13 0.65 0.9744 0.2063 0.0937 0.1448 26 8.37 84.55 0.50 0.50 0.7558 0.5447 0.0000 0.1038 27 8.82 26.93 69.56 0.31 0.8605 0.1156 0.9760 0.0519 28 5.81 101.03 17.00 3.54 0.1605 0.6674 0.2332 0.9344 29 8.55 52.13 38.49 0.70 0.7977 0.3033 0.5369 0.1585 30 8.18 70.46 5.60 0.40 0.7116 0.4398 0.0721 0.0765 31 5.12 37.76 37.40 2.67 0.0000 0.1963 0.5215 0.6967 32 8.02 31.63 38.49 0.91 0.6744 0.1506 0.5369 0.2158 33 8.78 81.54 12.98 0.57 0.8512 0.5223 0.1764 0.1230 34 7.36 56.98 17.00 1.52 0.5209 0.3394 0.2332 0.8825 35 7.74 85.08 7.65 0.43 0.6093 0.5486 0.1010 0.0847 36 7.95 66.17 51.00 0.13 0.6581 0.4078 0.7137 0.7027 37 8.36 51.55 5.62 2.55 0.7535 0.2990 0.0724 0.1639 The Relationship Model of the Content of Fe2+ Influenced by Atmospheric Pressure Device Low Temperature Parts The relationship model of the atmospheric pressure device low temperature parts affected

Depending on the physical and chemical characteristics of the ballast water treatment technology can be divided into three categories: mechanical treatment, chemical treatment and physical treatment.
Mechanical treatment.Mechanical treatment typically includes filtration and centrifugation techniques, the ballast water through the filter / sieve or "centrifugal separator" filters out impurities and harmful microorganisms, solid-liquid separation.
The disadvantage is that chemical health and safety of the crew, could adversely affect the pump and piping systems and ballast tanks.
The disadvantage is that some microorganisms are not affected by this approach, the need for additional work piping.
Conclusions The selection and installation of ballast water treatment system is a very complex project, restrictby the characteristics of the ship, processing technology and system capacity, and many other factors.

Introduction Ti6A14V alloy has comprehensively mechanical properties and is the most widely used Ti ally, especially in aviation and aerospace.
The main forming method of titanium alloy components is cutting, but titanium alloys are typical difficult-to-machine materials because of its exceptional physical and chemical properties.
The hydrogen content is the main influencing factor, the thermohydrogen treatment temperature effect is not obvious.
When the hydrogen content is no more than 0.1%, room temperature tensile properties of hydrogen infiltration Ti6Al4V alloy is no less than that of original Ti6Al4V alloy.
The introduction of hydrogen reduces the metal binding force between atoms, thereby affecting the elastic modulus of alloy [4].