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In addition, the SiC grains sintered at high temperature can easily coarsen and this results in rather low mechanical properties.
The aggregates have a typical cauliflower shape and consist of a large number of much smaller grains.
Grains with a few tens of nanometers - which is at the limit of resolution of the SEM apparatus used - are clearly visible on the image of Figure 6.
R., Toughness properties of a silicon carbide with in situ-induced heterogeneous grain structure.

The seeds were separated from the pods manually and were grained into powder by using Waring blender.
The grained seeds were soxhlet for 72 hours with ethanol in order to inactivate enzyme and eliminate low molecular weight compound [14].
Then, 300 g of grained seed were extracted by water extraction for 2 hours at 100 ºC.
The mixture was grained and put in the pellet kit to form a pellet disc.
Higher galactose number in the structure or with decreasing M/G ratio gives higher solubility in the water since galactose substitution established steric hindrance between the molecules and inhibit solid-state of mannan chain [4, 25, 26].

And it also improve the toughness of the steel and conducive to the formation of the fine grain structure.
Adding Ti in steel can improve the grain coarsening temperature and effective control of grain grew up in, achieves the purpose of improving strength and toughness of steel, especially in improving the toughness of heat affected zone in welding.
Vanadium has higher precipitation strengthening and the weaker grain refinement function, thus, the ductile-brittle transition temperature than niobium and titanium-containing steel are generally not used alone in pipeline steel design.
As far as possible to reduce oxygen content in steel during the refining process, reduce the number of inclusions in steel.

The alloy was examined in two structural states: (I) the as-cast coarse-grained state and (II) after high-temperature annealing in vacuum at 1250 K for 6 hours.
Such a small value of in a coarse-grained annealed sample may indicate the presence of a large number of low-angle boundaries.
This aligns with the notion that a substantial fraction of dislocations are concentrated at grain boundaries, while only those segments situated within grains and oriented favourably relative to the propagation direction of sound waves can efficiently engage with the cyclic deformation of the sample. 3.

Rp2 = N / (åi wi (yO,i) 2) Eq. 2 Rwp 2 = (åi wi (yC,i− yO,i)2) / åi wi (yO,i)2) Eq. 3 GOF2 = (Rwp /RP)2 Eq. 4 Where N as a label for a number of data point.
The grains of the sample La01 appears more connected than the La02 and La03 samples.
These grains connection could be due to a partial fusion of the sample trough a reduction of their melting temperature [32].
Also, the grains are randomly distributed and present a flat or a quasi two-dimensional shape and By increasing the dopant content the sizes of the crystallite exhibit a more homogeneous distribution in consistent with V.D.
The amount of x= 0.1 of Lanthanum reduces the melting temperature of the Bi-2212 phase and favors the grains connectivity which has as role to improve the superconducting properties.

In combination with time and temperature dependent microstructural changes (e.g. grain size, texture or phase fraction) within the irradiated material volume or for altering attenuation path lengths due to geometric inhomogeneities of the component in question during an EDXRD experiment (e.g. during in-situ welding) such intensity variations occur and therefore knowledge of the quantitative detector dt induced shift in E is compulsory.
However, the change is significant and therefore it is essential to determine the effect of the detector dead time on the strain measurement as long as e.g. grain size, texture or geometry effects may influence the diffraction experiment over time.
However, when performing high speed experiments under conditions which may affect the detector dead time (time dependent changes of the specimen geometry (in this case the weld seam) or the material grain size, texture or phase fraction) special care must be taken in order to account for such effects.
The results from this investigation clearly show, that strain measurements where changes in texture, grain size, phase fraction within the irradiated material (gauge volume) or where the beam attenuation path length changes due to varying component geometry require special care for determination of the detector dead time effects.
Acknowledgement We acknowledge the German research foundation (DFG) for financial support under project number GI 376/2-1 and the project partners from the German Federal Institute for Materials Research and Testing (BAM) Dr.

Corrosion number, a standard used in the industry, is defined in equation (1).
A lower corrosion number implies a more corrosion resistant surface.
Corrosion number = (fraction of scribe corroded)*(average length of filament)
The hot rolled sheets had the highest corrosion susceptibility with corrosion number as high as 9mm.
The main reason being the pinning of grain boundaries in case of the latter.

A great number of studies have been carried out on this aspect[14-16]. 2) The other is synchronous mechanism.
However, the number of its meristematic units can not be greater than that of its parent axis.
Essence of plant morphological description of wheat is to reveal the following aspects: 1) Branch network, namely axis information, such as branch numbers of axis (tillering), blade element number, organ set, arraying order, etc..
Geometric Modeling of Wheat Spike Structure of spike is relatively complex and could be divided into grain, axis, peduncle and awn.
For species which had awn, model construction of awn adopted cylinder and ellipsoid was used to construct grain model.

As a big agricultural province, Jilin is one of the earliest implementation provinces of construction of commodity grain base in China.
Therefore, this is a matter of great significance to promote rural human settlements construction in Jilin Province to solve the “agriculture-country- peasant question” problems and stabilize grain production. 1.
The past five years policy inspired Larger increase of the number of households construct Housing.
In public facilities aspect, Apart from the number of administrative with Sewage processing is in the lead in the Northeast, other indicators are lower than the other two provinces.
With renovation of the mud thatched cottage and promotion of the new rural planning in Jilin Province, only a small number of farmers temporarily improve housing conditions.

,sc}are sent by verifier,the server can homomorphism build a validation tag value B.Bilinear pairings Let G1, G2 as two additive group,GT is a multiplicative cyclic group,the order is a prime number P.u and v are the generator of G1and G2 respectively.
First, user can randomly select a signature on(spk,ssk),random number a←Zp and randomly selected k elements from G1,order;calculate v=ga,then the private key sk=(a,ssk) and Public key pk =(spk,g,v,,).sk is retained by the user,pk is released to TPA and CSS.
Figure 3 Communication cost Figure 4 Communication cost Figure 5 Communication cost comparison chart of different comparison chart of 1G file comparison chart block size odifferent files According to mathematical theory of probability can be conclude the number of test data,represent the probability of data error ,t is the probability of being detect.So when the error rate are 3%,2%,1%,0.5%,0.5%,and detection probability are 95% , 98% , 99% , 99.5% , 99.9% ,inquiry the number of data are 98, 195, 460, 1055and1380.Figure three shows under in the same block size,with the increase of the number of inquiries,communication cost will increase.
If the verifier data is not complete can be detected with a probability of 99%,then need to select the 460 data as a validation object.Figure four shows the file of 1G,block size is 512KB,sub-block size is 8KB,sub-block and block combined select 460 to verify , when sub-block is 0 , the number of blocks is 460,when sub-block is 46, the number of blocks is 414,and so on，select the number of two kinds of different granularity to verify are produce different communication cost .According to the chart,authentication of block that communication cost is significantly lower than the authentication of sub-block.
A fine-grained data integrity verification method[J].