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Dhkl=0.9 λ βcosθ (1) where Dhkl is the grain diameter, β is the half maximum line width, λ is the wavelength of the radiation used, θ is the angle of diffraction.
The X-density (ρx) for all the prepared specimens has been calculated using the formula [27], ρX=ZMNa3 (2) where Z represents the number of molecules in a unit cell of and in this case Z = 8, M represents the molecular weight of the sample, N is Avogadro number and ‘‘a’’ is the lattice parameter.
Lattice parameter (a), Grain diameter (D), Porosity (%), X-Ray density (dx), Ion hopping length tetrahedral site (LA), Ion hopping length octahedral site (LB) and Bulk density values of the nanoferrites annealed at 1000 °C.
The values of the corecivity (Hc) are also found to decrease with increase in the Cr3+ concentration which can be attributed to an increase in the bulk density which decreases the number of the pores.
Rp=12π6N13 (19) where N is the number of sites per unit site volume = 96/a3.

The kinetics of interfacial growth at the grain boundary was analyzed.
In the experiment process, the accuracy of the obtained hardness is ensured by means of averaging over a number of measurements (not less than 3 times).
At the interface, the Al-rich FeAl3 phase can change the toughness of the interface, and the master alloy AlB2 can play a role in grain refinement of the interface.
(5) The results show that there exists an acicular intermetallic compound FeAl3 and an intermediate alloy AlB2 at the interface, and it is found that the trace amount of Si does not exceed the solid solubility between them and only accumulates at the interface between the vacancy and the defect, resulting in an aluminum-rich FeAl3 phase can change the interface toughness, the intermediate alloy AlB2 can play a role in grain refinement of the interface

In tamping test, nine tamping points will be recorded, and the tamping times needed in every area is ascertained by the times at which the settlement in last two tamping is not more than 5cm; 3) Loose layer will be formed on the surface in full tamping for the stress diffusion,which can accelerate the local consolidation, every parameters can be decided by trial tamping; 4) The growth and dissipation of pore water pressure in saturated sand is very short, but it also needs to leave a certain interval time, at least two days after local tamping, to ensure the pore water pressure dissipate gradually in the form of changed grain flow.
Table 1 Technology parameters of dynamic consolidation Tamping type One tamping energy (kN.m) Tamping number Tamping distance tamping point distribution Tamping way Single point temping number Interval time (day) Local tamping 2100 One 4×4m Square Ordering tamping 6～7 2 Full tamping 800 One Temping lap 1/4 hammer printing across Ordering tamping 2 According to the geological conditions and the design indicators, the criterion of tamping stop are as follows: the average sink of the last two tamping is not more than 50mm; controlling the tamping depth, in principle, the accumulated sink of a single point is less than 1.5 ~ 1.8m, the biggest one depends on there is no limition to the hammer [2]; the cumulative uplift of soil around the tamping hole does not exceed 20cm.
Heavy dynamic penetration test point quantity are not clearly defined, but it should correspond to the number of loading test in rough, so as to observe the change of bearing capacity and density of foundation versus depth.
In the course of penetration, record the number of tamping at a certain depth, on which to determine the bearing capacity of the layer.

Product of uniform grain size distribution, development of complete, but the method can control the granularity of reunion between the particles, the raw material is cheaper, you can get the ideal stoichiometric composition material.
(2) In the hydrothermal synthesis process, the role of high-pressure, high temperature and alkali of TiO2 block along the crystal face was peeling off into thin slices on both sides of the piece a number of unsaturated dangling bonds.
With the conduct of the hydrothermal reaction, the increase in the number of unsaturated dangling bonds, so that the sheet surface activity began to curl a tubular shape, in order to reduce the number of dangling bonds and reduce the energy of the system.
Observed in the reaction intermediates to the large number of flakes, as well as its curly state.

Rare earth elements and their structural features Rare earth elements includ 15 lanthanides of Ⅲ B group with atomic number of 57-71 and both of scandium (Sc) and yttrium (Y), which are close relationship with lanthanide.
Also often due to their different number of 4 f electronics they show different valence state.
Besides cerium, europium, ytterbium is abnormal, because of lanthanide contraction, the radius and volume of lanthanide atoms generally decrease, atomic density increases, along with the increase of atomic number.
The results of research on LanF3 (Lan = La, Ce, Pr, Nd) by Webor also showed that the 4f orbital basically is localized in bonding, and estimated 4f orbital contribution to the bonding is no more than a few percent.[1] Clack at al. used the INDO method to study four olefinic double loop sheen cerium ions and also obtained the conclusion that the 4f orbitals basically do not involve in bonding.[2] But Gubanov etc is not totally agree with this view, they based on the result of the DVM - X alpha method research and regarded that the number of electrons provided to the 4f orbitals by ligands cannot be ignored, which shows that the bonding effect of 4f orbits of rare earth compounds are small, but can not be ignored.
And in the rare earth - Fenton system, the flocculation grain is big and sturdy, settleability is very good. [6] Rare earths improving TiO2 photolysis efficiency of organics.

Due to the limitation of numerical simulation which bases on the discrete element method, generally only applied to the small number of particle motion simulation, but it is clear that the method can not satisfy the actual working conditions of screw conveyer in the huge number of granular materials, its hardware condition requirements are too high, This paper mainly makes an analysis of the  internal flow field change in screw conveyer by using CFX software with HS360 sand fracturing blender , the study has great significance and necessity in structural optimization of the screw conveyer .
We make the following assumptions in this paper.(1)Taking gas as a continuous medium and the particle as a discrete system;(2)Gas phase is incompressible Newtonian fluid, solid phase is consist of the same size grain composition and particle phase is incompressible;(3)Solid particles and fluid phase have no mass transfer, fluid phase and particle phase interaction are strictly limited to mutual drag force, ignoring the pressure gradient force, the false quality force and Magnus force, etc;(4)Turbulence is isotropic, the influence of Brown diffusion to the particles compared with turbulent diffusion under the large Reynolds number Re can be ignored.
Solution settings :The computational model is Realizable k-e, step set to 0.001s ,total time set to 5s, courant number is set to 0.5 and other parameters of the system is set to default.

Up until recently plasticity index and grain-size distribution were accepted as basic characteristics used for soil-concrete mix composition, according to regulatory documents and soil stabilization recommendations.
Great number of different functional compound complicates the interpretation of the spectra of the stabilizer and, especially, of the products of its adsorption on the adsorbents.
Correlation of main adsorption bands in the area of middle wave numbers with adsorption bands of molecular groups of materials, forming part of stabilizer showed that band 1383 cm–1 correlates to valence vibrations C – C groups, band 1450 cm–1 - deformation vibrations of groups C – C and C – H, band 1620 cm–1 - deformation vibrations of CН2 groups.
It should be noticed that the number of bands increases with СН2 chain growth, bands superimpose on one another.
The noticeable asymmetrical broadening towards the small wave number of absorption band profile 1450 cm–1 was exception.

For this reason the number of correctly recordable photons per readout is much less than the number of pixels.
Crystallization studies from the liquid phase gave no usable nucleation/growth curves due to the high speed of crystallization and the low number of (coarse) grains fulfilling the Bragg conditions.
Only in a limited number of cases the time scale of such processes can be modified by external parameters like temperature.

Related works Structured document models are always the research hotspot in the domestic and foreign academia, and have been achieved a number of research achievements in the past few years.
In the face of a large number of confidential documents in confidential organizations, Zheng proposed a secure confidential document model (SCDM) [5] to prevent them from being unauthorized used or redistributed.
Li [6] presented a XML formal document model which uses a seven tuples and some constraints to describe a XML document, and implements a fine-grained mandatory access control mechanism based of this document model.
(6) describes version numbers of structured document, the version numbers will increase 1 once the document changed, this reflects multi-version characteristics of structured document in digital community

a) b) Fig. 2 Circumferential residual stress distribution after hot forging (1st step): a) outer rings (1-5 serial numbers) and b) RS comparison between outer and inner ring Fig. 3 Depth profile of residual stress and FWHM after the hot forging (1st step).
Circumferential residual stress distribution after turning of outer ring (2nd step): a) RS in outer rings (1-5 serial numbers) and b) RS comparison in inner ring (1-2 serial numbers) after the 1st and 2nd step a) 3rd step b) 4th step Fig. 5.
Circumferential RS distribution in outer rings (1-5 serial numbers): a) after severing (3rd step) and b) after heat treating (4th step) Fig. 6.
The stress-free structure at measuring position No. 0 shows isotropic grain size (black rectangles in Fig. 8c. and d).