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The mesh results is shown in figure 11, total elements number is 56309, the number of corner is 17792 and the D.O.F’s number is 325869. 2.
Direct method is using the exact number method to solve the equations.
The process of the fatigue damage is: Component in the loop load, micro-cracks forms on the weakest grain which has the biggest stress at the maximum stress place.

Introduction Wheat (Triticum aestivum, family poaceae) is the basic staple food of the majority of the population in many regions of the world, and continues to be the most important food grain source for humans [1].
A number of plant species have been reported to exhibit allelopathic activity on the growth of other plant species [3-5], and the allelochemicals in some plants can interfere with wheat growth via allelopathy [1,6].
Germination rate and germination speed were determined by counting the number of germinated seeds at 24-h intervals over a 7-day period and expressed as the percents of inhibition of germination and average speed, respectively.
The percents of inhibition of germination and average germination speed calculated by the following equation: (1) (2) where Nt is the number of seeds germination at t day, Dt is the corresponding number of days.

The limiting grain size of coarse aggregates is 37.5mm and the water content of it is 0.224%. the fineness modulus of the medium sands which is taken as the fine aggregates is 2.22, the water content of it is 0.4%.The PVC tubed is produced by the CHUANLU, the sizes of the tubeds are 160mm×7.0mm and 100mm×7.0mm(outer diameter×thickness).The parameters of performance which is found by experiment are list in the table 1.
The number of samples and the major parameters are listed in the table 2.
Design parameters of specimens Group number concrete ratio of height to diameter force status PVC number A-1 C15 2:1 TC √ 2 A-2 C15 2:1 CC √ 2 B-1 C30 2:1 TC √ 2 B-2 C30 2:1 CC √ 2 AS-1 C15 3:1 TC √ 1 AS-2 C15 4:1 TC √ 1 AS-3 C15 6:1 TC √ 1 AS-4 C15 8:1 TC √ 1 W-A C15 2:1 T ╳ 2 W-B C30 2:1 T ╳ 2 TC: total cross section of the common compression; CC:core concrete under pressure; T:total cross section under pressure (a) Core concrete under pressure (b) Total cross section of thecommon compression Fig.1.
Table2.Comparison of experimental and calculated results on short composite columns axial bearing capacity Group number Axial compression strength test average/kN Ultimate stress test average/MPa Strength Improved values /MPa Improve the percentage /% A-1 620.36 30.85 22.29 260.2 A-2 527.28 26.22 17.66 115.6 B-1 621.76 30.92 15.64 102.4 B-2 478.98 23.82 8.54 55.9 AS-1 258.68 32.94 - - AS-2 247.48 31.51 - - AS-3 198.54 25.28 - - AS-4 179.89 22.90 - - W-A 172.22 8.57 - - W-B 307.26 15.28 - - The analysis of influence factors axial pressure of short columns Concrete strength Concrete labeled C15 and C30 were used in the test to research constraint effect of PVC tubeds on them respectively.

Table 1: Experimental result description Test block number Blasting effect cs1# Test block split along the grain.
Each test block numbered from strain gauge 1 (gas decoupling faced), which was intended to be zero- angle.
Similarly, the damage of water medium and gas medium could be calculated from equation (1) which shown as follows: Table 2: Damage comparison of decoupling medium blasting Test block number 2# 3# 4# 5# Water medium damage 0.064 0.075 0.073 0.168 Gas medium damage 0.037 0.046 0.039 0.110 It was shown as table 3, damage the side of water medium was larger than the side of gas medium obviously after each test block blasted.
Table 3: Compressive strength comparison of decoupling medium blasting Test block number 2# 3# 4# 5# compressive strength (water), Mpa 9.9 12.3 13.8 11.1 compressive strength (gas), Mpa 14.6 13 15 13 Similarly, the compressive strength of each test block was all reduced on different degree after blasting.

A number of factors affecting the aircraft reliability level must be provided to prevent abnormal and emergency situations during the liquid rocket engine operation, associated with the occurrence of high-temperature bundles, fires due to the foreign particles ingress into the fuel components composition.
Fine filters, that retain the bulk of foreign particles up to 15 microns in size due to the large number of small dimensions channels, are often made with the metal mesh additional use, the appearance of which can determine the fuel contamination degree.
In the manufacture of a filter element designed for fine cleaning of fuel, to obtain a large number of small dimensions channels in one step is an urgent problem in mechanical engineering.
The high performance of this method provides a large number of holes in the part in a short period of time [2].
The principle of the process is to remove particles from the surface of the processed material with abrasive grains, which are subjected to the impact of a vibrating tool with an ultrasonic frequency.

Ti addition into Fe-Cr alloy increases the number of cation vacancies in Cr2O3 scales [7,8], and may promote the outward diffusion of cation at the initial stage of oxidation.
XRD patterns of 96 h oxidized Fe-20Cr series alloy In general, SEM morphology observation on alloy surfaces after 96 h of oxidation test show that fine grained Cr2O3 was formed on the samples (Fig. 3a,b&c).
TiO2 particles on the scale surfaces are still few in number and TiO2 continous layer was not formed at the surface.
Ti addition into Cr2O3 scale will create additional number of Cr vacancy, electron and hole concentration.
SEM observation on the surfaces of Ti containing alloys show that the TiO2 particles on the scale surfaces are still few in number and not continuous.

A number of non-steroidal ecdysone agonists or bisacylhydrazines have been synthesized as novel pest control agents [10-12].
Fig. 1 Structure of a typical ecdysone, showing the numbering of the carbon atoms.
Experimental Insect Martianus dermestoides Chevrolat (Coleopteran, Tenebrionidae, a kind of stored grain pests), was originally collected from Shenyang city, Liao-Ning province, China, and raised in laboratory without any contact with insecticides since 2005.
Total number of normal eclosing adults was noted.
Daily observations were carried out to record the number of the dead individuals was determined as well.

Note that the numbers shown in the figure stand for the number of cycles, and that arrows indicate shape recovery by heating [6,7].
Some of them were mechanically crashed into powder with the particle size of 100~160mm which was comparable or smaller than the grain size.
Compression tests of the silicone/PFPs mixtures revealed that the elastic modulus was decreased with increasing the number of PFPs.
It is clear that MVR is not recognized for the composite with 0PFP (PFP-free), but MVR clearly appears with increasing the number of PFPs.

The precision of approximation can be increased by increasing the count of peaks included into model, however, only restricted "reasonable" number of peaks should be used.
For estimation of this number we used the dependence of approximation error, expressed as residuum, on number of peaks in computational model.
Usage of more peaks with small amplitudes in computational model introduces non-important maxima and uselessly increases number of degrees of freedom.
Moreover, there is well known fact that thick a-Si:H layers contain Si grains which are formed in later stadies of thin film formation.

In NAND Flash memory, the minimum erase unit is the block and the number of program/erase cycles applied to a page is the number of possible erase cycles.
When having the data update frequency of stored data, it is possible to set the proper number of blocks that satisfies the lifetime requirement. 2-KB RAM Based Block-Grain Mapping Method The first method uses fixed blocks group for wear leveling.
So the best case is that the numbers of writing/erasing operations on all zone are equal.