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Weather According to weather statistics of Yuzhong County,the annual average temperature was 6.7 ˚C ,the January average temperature was -7.5 ˚C ,July average temperature is19.3 ˚C ,minimum temperature is -27.2 ˚C ,maximum temperature is 35.8 ˚C ;annual precipitation was 381.6mm, maximum precipitation in the 1st was 98.1mm, maximum rainfall of one hour was 35.0mm;one hour rainfall of 10 years a case was 29.44mm,one hour rainfall of 20 years a case was 37.28mm; flood season began in May month and end September, flood season precipitation was 291.8mm; annual evaporation was 1343.1mm;annual average wind speed was 1.9m/s,the maximum instantaneous wind speed was 25m/s,windy days were 4.6d,the average annual number of sandstorm days were 2.5d,northwest wind was dominant;average permafrost was 120cm,dryness was.0.65.
Runoff No hydrology observations for LiuGou watershed.According to the mean annual runoff contour map of reference [1],annual runoff Richard LiuGou watershed was 10.0mm.The design flood data were Deriving from the storm. 1.4.Sediment and ice conditions No sediment transport measured data for LiuGou river,the sediment grain size was 2-5cm,the largest was 8cm, the skeleton particles was about 50-55% of the whole weight,the gravel particles are weathered , particle size with depth increases, filling were sand and silt and sand was dominant, medium dense,graded in general.No information on ice conditions measured .
Acknowledgements Fund project: "changjiang scholars and innovative team"; Fund project number: IRT1139 References [1]Gansu Province Water Conservancy Bureau of Hydrology Station Code.Gansu Province Hydrology Atlas..Gansu Province Water Conservancy Bureau Hydrological Station.1978 [2] Gansu Provincial Water Resources Department.Gansu Province flood survey.1983 June [3]Gansu Provincial Water Resources Department.

This is because the surface of aluminium powder particles is enriched with a large number of electrons, and graphene is adsorbed to the surface[6].
With the increase of milling time, the number of friction between particles increases, and graphene adsorbed to the surface gradually disperses on the flattened aluminium powder particles.
High-strength chemical-vapor-deposited graphene and grain boundaries, Science, 340(2013) 1073-1076

Two times are important in the KMC simulation, one is the average time interval between the arrival of two atoms in a 2D lattice model (∆t), and the other is the net residence time tn [10], which are given by Eq. 2 and Eq. 3: Dt = 3re 2nR (2) N tn =1/ å Pi i=1 (3) where R is the deposition rate, n is the number of atoms comprising a monolayer in a close-packed simulation system, and N is the number of different types of jump.
As can be seen from Fig. 1, there exist few vacancy in Ni-Cr alloy film and grain size is large for incident angle of 0˚, 15˚ and 30˚, and the smooth surface slightly roughs with incident angle increasing, show as Fig. 1 (a), (b) and (c).

Initial increase of conductivity in the first region explains the increasing number of mobile ions in the system.
The dielectric constant, eR explains the increasing of ionic conductivity is due to the increasing number of mobile ions [17].
The presence of AlPO4 may reduce Li+ motion across the grain boundary and the presence of TiP2O7 may counteract any beneficial effect of other phases on conductivity [18].

The as-received microstructure of the base material consisted of fine equiaxed austenitic grains (17 m).
Fig. 2 Effect of laser welding parameters on the number of pores.
Specimen Group ID Defects SP39 2x 0.25mm pores SP40 2x 0.25mm, 7x 0.125mm pores SP41 3x 0.125mm pores SP42 No indication 0 1 2 3 4 5 6 7 P=3000W P=3500W v=3.0m/min v=4.5m/min Vw=3m/min Vw=4m/min Laser welding paramters Number of pores Table 4 Mechanical properties Specimen Group ID Joint Type UTS (MPa) EL (%) SP39 B 855 44.3 SP40 B 862 41.5 SP41 B 861 38.8 SP42 B 860 44.2 Fig. 1 - Weld bead profiles for 2 mm thick IN718 samples Table 3 X-Ray Results Fig. 4 Effect of laser welding parameters on tensile properties of IN718 butt welds Conclusions Investigation of Nd:YAG laser welding of 2 mm IN718 sheet butt joints over a range of process conditions indicated that the application of filler wire during laser welding eliminated the underfill on the welded surfaces of the butt joints leading to the beneficial 'reinforced' bead shape that provided significant improvement of the mechanical properties of the joint

The sample was subsequently grounded with successive SiC papers (grit size of 200-1200) and then polished with polishing cloth and Alumina solution with the grain size of 6 µm, and finally 1 µm.
Table 1 Experimental fatigue lives and fatigue damage for the country road data signal Signal type Experiment 1x104 Experiment 2x104 Experiment 3x104 Fatigue life (Number of cycles to failure) Country road 1.79 2.80 2.94 Fatigue Damage (x 10-5 ) 5.59 3.57 3.40 Table 2 The FEA fatigue life and damage for the country road data using strain-life model Signal type SWT Fatigue life (Number of cycles to failure) Country road 6.26 x103 Fatigue Damage Country road 1.6 x 10-4 Numerically, the comparison between fatigue life determined using the SWT strain-life model as with the three experimental findings are tabulated in Table 3.

In comparison with gas refrigerators, magnetic refrigerators have a number of advantages such as high efficiency, small volume, and ecological cleanliness.
Experimental procedure Two types of CoCr2O4 samples with different grain sizes, as representatives of bulk and nanocrystalline materials, have been prepared by calcining oxides and chemical coprecipitation methods, respectively.
With the crystal size down to nanoscale, the number of magnetically disordered surface atoms increases, leading to a reduced magnetization, simultaneously, the magnetic exchange interaction and magnetic anisotropy deviate from the bulk material, giving rise to a reduction of TC [9].

There have been a number of investigations of carrier lifetimes [1], and in recent years several studies of post-growth improvements of the carrier lifetime [2,3].
These features are either related to high dislocation densities, such as grain boundaries, or stripe-like features normally orientated perpendicular to the [11-20] off-cut direction.
A rough estimation of the individual radial wafer rotation rate and the gas flow speed over the substrate gives comparable numbers.

The number of grains under the Vickers indent was sufficient to obtain a representative bulk hardness measurement.
Acknowledgements This research was carried out under the project number MC 41.5.08311 in the framework of the Research Program of the Materials innovation institute M2i (www.m2i.nl).

In the experiment, we use corundum grains of sand as abrasive and their mesh number is 30#.
The number of steel wheel revolutions is set to 500.