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The experimental results and discussion 2.1 Determination of debris recovery Choose water and well completion fluid system, add 50 grams of natural debris, the grain size of 40 ~ 60 mesh, under 60℃, scroll after 24 h, recycling with the sieve of 100 mesh, drying, weighing, notes for the m1, calculate recovery rate R1, the bigger R1 is, the smaller the cuttings dispersion degree is, the better the stabilization effect is.
Table 4 Determination of completion fluid corrosion rate Specimen number Surface area 10-4m2 Quality g Quality of corrosion g Corrosion rate g/m2·h 1# 20.5 20.2469 20.2357 0.076 2# 21.4 20.7862 20.7740 0.079 average 20.9 20.5166 20.5049 0.077 Seen from the table, the average corrosion rate is 0.077 g/m2·h, less than the enterprise standard of Daqing oilfield limited liability company, the standard is 0.100 g/m2·h. 2.4 Completion fluid for the influence of different permeability cores Choose three different permeability of natural cores respectively into three core grippers, with 2.0% KCl solution measured core permeability , denoted by K1, injected completion fluid, after 24 hours measured core permeability, denoted as K2, Calculated Damage core rate, the experimental data are shown in Table 5.
Table 5 The influence of completion fluid on core permeability Core number K1 10-3μm2 K2 10-3μm2 Damage rate ％ 1-4 94.5 82.4 12.8 1-7 131.2 115.2 12.2 1-8 186.3 166.7 10.5 From the table can be shown, to the cores of different permeability and injection after completion fluid, permeability reduction, the higher the permeability of the core, completion fluid of core damage degree of the lighter.
Table 6 The influence of completion fluid immersion time on core permeability Core number K1 10-3μm2 Immersion time h K2 10-3μm2 Damage rate ％ 1-9 78.9 4 72.3 8.4 2-6 71.6 12 63.6 11.2 2-11 82.9 48 71.0 14.3 2-13 77.0 120 65.7 14.7 From the table can be shown: For the four similar permeability cores, with the extension of completion fluid immersion time, the core of the damage degree would increase, initial core damage is faster, the increase amplitude of the damage rate will slow down after 48 hours.

The literature analysis shows that materials based on aluminum effectively strengthened when bringing them to sub-ultrafine-grained or nanostructural level [1-6], but the properties of aluminum alloys obtained using nanomaterials are insufficiently studied.
When reducing the carbon number of the liquid phase will increase, and aluminum to decrease.
The samples were prepared from aluminum powders with a particle size of the main fraction is 5-100 μm or crushed chips alloy AK9 and number of nanocarbon materials in the ratio of Al - 10 mass. % C in the original mixture.
Number of input ligatures in aluminum melt was calculated from the condition 1 wt.% carbon composite.

Table 1 Chemical composition of Ti-6Al-4V Element Ti Al V Fe C N H O Wt % Balanced 6.17 4.23 0.15 0.03 0.02 0.001 0.16 Table 2 Mechanical properties Material σy [Mpa] σb [Mpa] E [Gpa] Ti-6Al-4V 886.2 949.0 115.2 The USDR parameters adopted for processing including spindle speed, feeding rate, static force, ultrasonic vibration amplitude and repeated processing numbers were 100 r/min, 10 mm/min, 720 N, 16 μm, 50 times, respectively.
Grains in deformable layer are extruded and elongated.
During later cyclic loading the residual stresses decrease linearly vs. the logarithm of the number of cycles.
While at higher strain amplitudes, residual stress significantly decresed as the number of fatigue cycles increased.

Introduction In order to increase crop production ,when people grow they use a large number of pesticides and fertilizers, but it is neither environmental protection nor safe.So how can do both productive and reduce the side effects become a hot research topic .The experiment using high voltage electrostatic field to affect barley seed, discuss their effects on seed germination.The process using physical method without adverse effects and can achieve the purpose of crop productive, aims to further promote high voltage technology in the practical application of this field.
The experimental materials and method Barley seed (Liao Ning 5) is bought from Jilin province Runhe seed industry co., LTD.Fresh, without skin damage seeds were used in experiments.Seeds were divided into 7 groups, each group of 200 grains, placed in a petri dish.
Test results By comparing the experimental data，the number of seed germination, germination potential, germination index, vigor index of seed under 3.5 kV and 5 kV voltage are higher than other experimental group, the effect is significantly higher than the control group.Thus the high-voltage electrostatic field can promote the growth of barley seed, but the voltage is not the bigger the better, but the medium voltage .
Lead to a large number of ions through the membrane , thereby increasing the permeability of cell membrane, maybe this could explain the experimental results of this paper.

New polishing technology is developed as for large numbers of new type precision integrated photoelectron systems, with good performance.
After Journal Title and Volume Number (to be inserted by the publisher) 645 that, taking down these wafers and damage layer on the wafers were measured again.
By changing the proportion of each ingredient, the perfect flow and suspended character are gained, and the wafers will not to be defiled by remnants grains.
Furthermore, the material particles were removed when the abrasives particles in the decade’s nanometer level are used to polish the LN wafer, it cannot be explained by these polishing Journal Title and Volume Number (to be inserted by the publisher) 647 mechanisms macroscopically.

Based on the assumption that the fatigue life to initiate a micro-structurally short crack, i.e. a crack with dimensions of few grain sizes, may be neglected, Dankert et al. [1] have proposed a calculation model describing both stages of the fatigue lifetime, i.e. mechanically short crack propagation till to technical crack initiation of approximately 1mm and stable long crack propagation, using the cyclic J-integral as a crack driving force parameter.
Specimen dimensions in [mm], notch concentration factors and material properties 103 104 105 106 107 50 100 150 200 250 300 350 400 S355J0G1 notch shape A stress ratio R=0 R=-1 R=-3 Number of cycles to total failure Nf Nominal stress amplitude Sn,a [MPa] (a) 10 3 10 4 10 5 10 6 10 7 50 100 150 200 250 300 350 400 stress ratio R=0 R=-1 R=-3 R=0,5 S355J0G1 notch shape B Number of cycles to total failure Nf Nominal stress amplitude Sn,a [MPa] (b) Fig. 2 Comparison of calculated and experimental fatigue lives for notch shapes a) A and b) B 10 3 10 4 105 10 6 10 7 50 100 150 200 250 300 350 400 S355J0G1 notch shape C Number of cycles to total failure Nf Nominal stress amplitude Sn,a [MPa] stress ratio R=-1 R=0 R=0.5 Fig. 3 Comparison of calculated and experimental fatigue lifetimes for notch shape C Fig. 2(a), 2(b) and 3 show the experimental Wöhler curves to

Introduction Application of precise contemporary X-ray methods by study of shell tubes from Zr-based alloys permitted to reveal a number of structure features, able to quicken diffusion of oxygen into the matrix.
Mean values of coefficients αc and αa at 350oC, found for a number of literature data [6], are equal to 5.5 deg-1 and 8.8 deg-1, respectively.
It is seen in Fig. 2-b, that under the influence of tangential macrostresses lamellar hydride particles take up radial positions, perpendicular to outward surface of tube, and coincide apparently with grain boundaries, having analogous orientations and being ways of active oxygen diffusion under operation of tangential macrostrsses.
Thermal expansion of different layers of shell tube by its heating up to 350oC Sample number Depth of layer, t, µm fT αT 10-6, deg εТ, 10-3 εТin/ εТout 1 250 0,37 6,721 2,2179 1,005 600 0,38 6,724 2,2288 2 240 0,36 6,688 2,2070 1,025 620 0,41 6,853 2,2615 When taking into account values εТin/εТout, presented in the last column, it becomes understandable, that by control of production the first tube was accepted as satisfying to technical conditions, whereas the second tube was rejected as spoilt.

Accordingly, several scales of observation are linked in a sequential way, to transfer information from the most detailed scale up to the coarse-grained level of macroscopic description.
In both cases, the accuracy of the predictions and the reliability of the coarse-grained evolution depend crucially on the quality of the atomic-scale description and its predictive power.
By chemical order we mean the propensity of a given system to maximize the number of heteropolar connections, i.e. to minimize the number of homopolar (like atom) bonds.
Moving from C40Si20 to C36Si24 and eventually to C30Si30, the number of Siout does not exceed 12 and it appears that structural instability is due to an increased number of Siin atoms.
This number decreases to five for the neutral case and to one for positive C30Si30.

This shows that with the increase of the number of hydrogen filling, the diffusion of hydrogen in the specimen decreased significantly.
Hydrogen permeation curve of the same specimen for different numbers of hydrogen charging.
The diffusion coefficient of hydrogen in the specimen becomes larger with the increase of the number of experiments.
Lag time and diffusion coefficient of the same specimen for different numbers of hydrogen permeation.
This is mainly because the microstructure of metal materials is generally less complete, there are always different types and degrees of defects, such as dislocations, grain boundaries, non-metallic inclusions, bubbles, etc.

High-energy ball-milling in hexane medium was employed to prepare noble Zr-based bulk metallic glasses (BMGs) alloy of three different nominal compositions Zr47Be23Ni15Ti15, Zr50Be20Ni15Ti15 and Zr52Be18Ni15Ti15, numbers indicate at.%).
A number of papers [1,3-5] on the study of metallic glasses show the amorphous state is altered by structural relaxation and crystallization processes.
Samples milled for 50 and 300 h contain a large fraction of Zr grains, as can be seen from the FCC Zr peaks, which are high in intensity and exceed the halo in height (see Fig. 4(b and c)).
(i) a high number of, (ii) a large atomic size mismatch between and (iii) a high chemical affinity between the constituent elements.