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The second one is that the spread velocity of Rayleigh wave has a close relationship with physical mechanics property of media [4].
Table 1 Stratum structure of inversion C5G Property Layer Shear velocity m/s Bottom depth of the layer /m Layer thickness /m ① 139.2 0.7 0.7 ② 158.0 2.1 1.4 ③ 164.6 5.1 3.0 ④ 346.7 10.1 5.0 ⑤ 641.5 15.3 5.2 Bedrock 848.1 -- -- Because the thickness of ② and ③ have the approximate value, nearly no difference, we can regard the two layers as one layer, so the final result is in Table 2.
Table 2 Stratum structure after merging Property Layer Shear velocity m/s Bottom depth of the layer /m Layer thickness /m ① 139.2 0.7 0.7 ② 164.6 5.1 4.4 ③ 346.7 10.1 5.0 ④ 641.5 15.3 5.2 Bedrock 848.1 -- -- To verify the veracity of Rayleigh wave exploration, we compare the result of Rayleigh wave exploration with the field bore histogram, as is in Table 3.
Rock core mainly presents fragmental structure; easy to softening disintegration after soaking, mechanical strength is low and inhomogeneous, ability to resist weathering is low, belongs to extremely soft rock, crushed rock mass, fundamental quality level is Ⅴ. ⑤ K2p 14.8 3.5 Argillaceous siltstone: purple, red, slightly claybank, partial rock mass has broke, weathering fractures are obvious, rock core mainly presents short-medium column structure, rock strength is higher than that of intensely weathered zone, belongs to soft rock, rock mass is intact, fundamental quality level is Ⅳ.
Chinese Journal of Engineering Geophysics. 2013.01 [3] Jianjun Niu, Xiaopei Zhang, Lizhi Du, et al: Research on the factors affecting the precision of transient Rayleigh wave exploration (In Chinese).

Microwave treatment of oilfield wastewater has advantages such as equipment occupies a small space, easy to operate, portable, easy to transport, easy to installation and commissioning, short reaction time, high efficiency, discharge water which has good quality, temperature and other factors do not affect the treatment oilfield wastewater effect and so on.
The experimental instrument for the MKJ-J1-5 type microwave test furnace, by the Qingdao Maiwei electrical and mechanical equipment limited company production.
Table 1 Basic physical and chemical properties of oily wastewater Water Quality Objectives pH COD BOD Oil Test results/mg/L 8-9 800-5000 400-800 500-10000 Table 2 Percentage of number and volume of different particle sizes of oil droplets of oily wastewater Particle size range/μm 0-5 5-10 10-15 15-20 20-25 Percentage of the number/% 99.09 0.31 0.36 0.12 0.12 Percentage of the volume/% 79.78 0.67 5.22 3.56 10.77 We found that the dispersion state of the waste oil in the oily wastewater is highly fragmented.
The sensory properties of oil-water separation after microwave irradiation.The different microwave irradiation time in water samples of oil-water separation can be intuitive to see from Fig.3, microwave irradiation time is more than 2min, oil-water separation effect is obvious, but when microwave irradiation time was more than 3.5min water color gradually yellow, there is some kind of material at high temperature in oil reacted to dissolve in water. 1# 2# 3# 4# 5# 6# 9# 7# 8# 10# 30s 60s 90s 120s 150s 180s 270s 210s 240s 300s Fig.3 Sample photos of different microwave irradiation time After microwave irradiation in water and oil containing water temperature comparison.Water temperature with microwave irradiation time as shown in Fig.4, can be seen in water containing oil and water in the field of microwave irradiation heating curve have very big difference, show two kinds of liquid absorption of microwave energy is consistent.

The efficiency of the fan has been shown to be majorly affected by dust build-up [5], noted that an adverse dust build up on the blade could affect the speed of the fan and even cause the blade to wobble as well as cause the fan’s motor to heat up, thus resulting in more power being drawn for operations as well as pose safety challenges.
The conversion of electrical energy into mechanical energy in ceiling fan is done by an electric motor [3].
The design involves mechanical and electrical analysis.
The choice of Pugh Matrix Method was based on its simplicity and various determining factors of the concepts.
Determination of the physical properties of the cleaners and accessories Due to the geometrical properties of the fan blades, the cleaner, and holders would be made bigger (in width, thickness) in dimensions to ensure effective sliding.

As chitosan membranes have been found to have excellent film-forming properties and high mechanical strength, they are suitable for haemodialysis, ultrafiltration, reverse osmosis, pervaporation, fuel cell and adsorptive membranes.
Membranes from pure chitosan cannot offer sufficient mechanical stability for application in flow processes.
In the current study, silica and PEG were blended to improve physical and mechanical properties of chitosan membranes in adsorbing copper ion from aqueous solution.
Enhancing hydrophilicity and surface roughness are other possible factors for adsorption improvement by PEG addition.
Therefore, porogens not only plays a key role in information of the porous stucture of the membranes (by phase separation) but also affects the wettability as discussed [7].

Introduction Residual stress is one of important factor of machined surface quality, and it has great impact on fatigue life[1].
Residual stress is the result of thermal-mechanical coupling.
Thermal stress is more than mechanical stress on specimen outmost surface and it is less than mechanical stress in interior, so that the residual stress is mixed stress.
Experiment results in Exp.1~4 indicate cooling effect of cutting fluid can affect the maximal value of residual stress, and its lubricating effect can affect the residual stress layer thickness and the depth of the maximal residual compressive stress beneath machined surface.
Cutting fluid have various effect on residual stress in different cutting conditions; when great cutting heat and mechanical deformation are generated on machined surface, cutting fluid has greater influence on residual stress and even with the different various cutting fluid property.

The hot-dip galvanized layer which has good adhesion properties composed with zinc layer and iron-zinc alloy layer, and has long history of application and large dosage relatively.
The impurities of aluminum ingot are the primary factor which affects the appearance quality of the hot dip aluminized layer [6].
The impurities are consisted of different components, some elements are bound to affect the infiltration and fluidity of liquid aluminum, and ultimately affect the continuity and appearance quality of hot dip aluminized layer.
The passive film is formed on the surface of the zinc, this is the passivation properties.
[2] Jintang Lu, Qiaoyu Xu, Gang Kong: Hot-dip Plating Technology and Application (Mechanical Industry Press, Beijing 2006)

Introduction Ni-base superalloys have excellent high-temperature strength and oxidation resistance and improvements in its properties are expected to lead to the increase of the output power and efficiency of jet engines and gas turbines.
In our previous research, the oxidation behavior of Ru-containing Ni-base superalloys with various amounts of Hf was examined [14] and it has been clarified that the addition of Hf to the superalloys is effective to improve the oxidation resistance by affecting to the adhesiveness of the scale at the interface of the oxide and the substrate.
In order to add a large amount of Hf to the alloy without degrading the mechanical properties, Ta was substituted with Hf.
So, it is important to know a role and necessity of Ta in the oxidation property of Ni-base superalloy.
In our previous research [14], Re has been found that it degrades the oxidation resistance under the condition of Ru existence, and so Ru and Re must be considered as factors in the degradation of the oxidation resistance.

Four grades of commercial, silicon based magnetic fluids of hydrophobic properties were tested in a single stage sealing system.
Certainly, there are many additional factors both geometrical and dynamic that affect the ability of the seal efficiency in water environment.
Four grades of magnetic fluids of high hydrophobic properties were investigated.
The water pressure level is an important factor that affects the magnetic fluid seal operation in water conditions, but that problem was not the subject of that study.
Magnetic and viscous properties of magnetic fluids compared with critical pressure and critical motion velocity values obtained in experiments with magnetic fluid seals operating in water.

Cross linked polyethylene (XLPE) are commonly used power cables having high electrical and mechanical properties.
In recent years, various researchers have analyzed the factors affecting the insulation failure of outer shielding layer.
External factors, such as moisture [8] and transportation [9,10] also causes a large potential difference between outer insulation layer and aluminum sheath which in return will cause the insulation failure.
This paper takes the high-voltage XLPE cable as the research object, design experiments to explore the influence of various environmental factors on the white powder generation characteristics of the cable buffer layer, uses the multi-physics coupling simulation software COMSOL to establish the cable model, and analyzes the current density under different concentration of white powder and corrosion time.
Buffer layer failure characteristics, failure mechanism and white powder generation influencing factors, and discuss the failure response methods.

This will be leading to either deposition of the tool material on the substrate surface or alloying near the substrate surface leading to a change in the surface properties of the substrate.
Al and Fe are two metals with a huge difference in physical and thermal properties [7].
It is basically controlled by the extent of heat generation at the interface, heat dissipation to the bulk and the material properties at that temperature.
This is also because no direct equation is available to determine to weld power based on this factor [12].
Though the power consumption is a good indicator of the temperature history of the tool under steady state conditions [14] it neglects other important factors [3].