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A number of mechanisms have been proposed to understand stress corrosion cracking (SCC) of metals, e.g. (1) slip dissolution and active pass corrosion based on anodic dissolution of metals, (2) tarnish rupture and internal oxidation based on oxidation ahead the crack tip followed by cracking of the oxides, and (3) hydrogen cracking, etc.
The cracking has been caused by sensitization in welding heat affected zones due to Cr depletion along grain boundaries [1].
However, in recent years, a great number of SCC incidents have been observed in core shrouds and re-circulation pipes made of L-grade stainless steel in Japanese BWRs.
To solve the SCC problem, a great number of studies about SCC mechanism on stainless steels in high temperature water have been done from the points of view of material, mechanical, and environment [2].

But with the use of calcined hongurin there is a slight decrease in the water resistance of the rock: in the optimal composition from 0,96 to 0,87, it is explained by the decrease in the activity of hongurin due to the reduction in the number of active groups, and the resulting new centers have a Lewis character.
For this purpose according to the plan of a full-factor experiment 9 compositions with two variables were prepared: X1 – temperature of calcinating of zeolite (°C); X2 – the number of the plasticizer (the % of binder's weight ).
This can be explained by the fact that when zeolite-hongurin is heat treated, the number of active groups reduces in it, and the resulting new centers have Lewis character, i.e. their activity decreases [20].
Morozova and Kays Hamza Abdulmalek, About a role of natural zeolite on durability of fine-grained concrete, Bulletin of the technological university (Kazan). 19(10) (2016) 64–68

The image of field emission scanning electron microscope shows uniform distribution of NaNO2 grains of 150 nm size in the composite film.
There have been a number of experimental and theoretical studies on the structural and electrical properties of the 0-3 composite films, which have shown the new and improved properties with their macro-counter parts.
Shur [18] et.al modified this model by taking into account of grain size effect through the insertion of an impingement time ti and the polarization current is given by [18] for α - model ----- (3) for β - model -------- (4) Where, both t0 and n have the same meaning as in Ishibashi model.

However, at present efficient and fine-grained access control can not be achieved.
The algorithm first randomly selects random number r1∈Zp, then selects random number rj∈Zp for each attribute j∈U, and finally output the first part of private key of user SK1= D1=g（α1+r1）/β1 ，∀j∈U ：Dj（1）=gr1Tjrj，Dj（2）=grj. 3) KenGen2（MK2，IDk）.
The algorithm first randomly selects random number r2∈Zp, then selects random number rk∈Zp for each user identity idk , and finally output the second part of private key of user SK2= D2=g（α2+r2）/β2 ，Dk（1）=gr2Tkrk，Dk（2）=grk.
When re-encrypt key ciphertext Ck, the root node of access structure tree secret number must be updated.
Therefore, the consuming time of DO is almost irrelevant with the number of users and the number of access structures leaf nodes (the larger the number of access structures leaf nodes is, the more complicated the access control strategies are).

Motor has a total length of 530mm, diameter of 170mm, and the grain length of 300mm with 114mm inner diameter.
The mesh grid is Hexahedron with a total number of 70000.
So the number incerease, while the mass decrease slightly.
For convenient, we defined R as initial droplets number divided by finial droplets number, which reflects the intensity of droplets breakup action.
Statistics of particle number along the axis

Some of these include products that are for: · stronger structure · stronger pavement in roads · water treatment Conclusively, there are a large number of applications of nanotechnology in civil engineering.
The copper nanoparticles can reduce the surface unevenness of steel which then limits the number of stress risers and therefore, hence fatigue cracking.
The addition of nanoparticles of magnesium and calcium makes the heat affected zone grains finer in plate steel and this leads to an increase in weld toughness.
· A number of developments can potentially improve the time and life-cycle cost of civil engineering projects.

Rammer Rammer should adopt the form of a circular base .The area of hammer bottom should be determined by the nature of the soil .The static pressure value of hammer bottom is desirable 25 ~ 40kPa, it should take a small value for fine grained soil .
The filler number should be recorded.
Finally, ramming pit depth for every hit need record , and so forth until the number meets specified compaction and control standards.
·The tamping number and amount on each point should be checked according to design requirements ,and the ram mark lap 1/4.

Rock is a multiphase material composed of several kinds of mineral grains, cements, micro-pores and cracks.
The plane distance λCPI is calculated as follows: (1) Where L represents the length of dissect line along a particular direction and NLC denotes the number of micro-crack crossed by the dissect line.
By using equation (3), two end-points of each microcrack can be calculated as: (3) In the equation, , is the starting point coordinates of number i microcrack and , the ending point coordinates, ,the center coordinates, is the length of number i microcrack and the azimuth angle.

Consequently, the matrix of transition probabilities of the ith fraction particles developed by Han and He [2] can be changed as (1) The derivation presented below is for the grains of fraction i, denoted by a subscript i.
The average particle number transferred from static state 1 to bedload (state 2) in unit area per unit time period is (2) (3) where Li=average length of single-step; Ui=average velocity of sediment particle; ti=time of exchange between bed load and bed material. ρs=sediment density; g=gravity acceleration; K2=particle number in saltation state(bedload) in unit water column. n0i is the average number of static sediment particles and can be determined according to the following equation (4) where m0=density coefficient for bed materials. approximately equal to 0.4[2].For equilibrium

The oxidation and corrosion properties of Si3N4 ceramics are dependent upon a number of processing and materials variables.
The grain boundary and triple point phases that are formed from the remains of the sintering additives after densification play a critical role on many high temperature properties including oxidation and corrosion [1,2].
Using this experimental setup measurements on the oxidation and corrosion resistance of a number of hot pressed Si3N4 based ceramics were investigated.
In particular composition number 4 of Si3N4+Y2O3 achieves a sintered density of only 88 % of its theoretical.