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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.

Later, as the improvement of drainage condition and construction method, it was gradually applied to fine grained soil.
The vibration produced by the dynamic compaction is different from the blasting or earthquake, which sums up with the following characteristics: first, the dynamic compaction vibration belongs to point source, which spreads around in the earth by the form of vibration wave, which can be divided into two types: body waves and surface waves. in the far away from the source, construction mainly affected by the Rayleigh wave, and the biggest factor of impacting environmental usually was the vertical vibration component of Rayleigh wave; Secondly, through the analysis of a large number of field measured data, we can know that the vibration wave produced by the dynamic compaction has the characteristics of distance decay faster with short duration(within 1.0 s), and its main frequency is usually at about 10 Hz, which belongs to the low frequency vibration.
Table 1 Engineering geology layer table Soil serial number Soil name Depth（m） Thickness （m） Distri- bution Lithologic character Engineering properties  Miscell-aneous fill 0.00 2.0~5.5 AVG 3.23 Area all have distri- bution Noise, yellow-brown, slightly wet, loose, consisted of cohesive soil, gravel, brick, pile head, concrete block, slab, ash, plant roots, etc.
Trial ramming point Measuring point Maximum value frequency Serial number Distance to trial ramming points(m) 1 2 3 A1 D1 14 108.47 81.79 103.52 108.47 D2 24 40.10 40.10 35.58 39.55 D3 41 24.67 24.41 24.67 22.59 D4 60 11.55 10.25 10.46 11.55 D5 83 7.03 5.25 7.03 5.24 The Results of the Numerical Simulation After the numerical simulation of the whole process of dynamic compaction by using dynamic finite element software LS-DYNA, get vibration acceleration curve of the soil element node, according to the distance distribution from monitoring points to the tamping points, select the corresponding node in the model, the vibration acceleration maximum value is shown in Table 4, to facilitate comparative analysis on the rationality of the numerical simulation.
Trial ramming point Measuring point Maximum value Serial number Distance to trial ramming points(m) A1 D1 14 205.2 D2 24 106.6 D3 41 44.1 D4 60 17.06 D5 83 9.48 The Results Comparison of the Numerical Simulation and Monitoring In order to analysis the rationality of numerical simulation more visual, we do curve figure 3 according to table 3 and table 4 monitoring points in the vertical vibration acceleration maximum results.

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.

Microstructure with low level porosity and very fine grain after firing process at specific temperature was obtained.
Many factors could have been selected, but it will greatly increase the number of experiment needed to be conducted and consequently, cost increase [11,18].
If the number of factors is quite high as in our case and is possible to assume that there may be low-order interactions, the data for the interaction and main effects can be obtained by running only a fraction of the factorial designed experiment.
Unlike simple design which requires a large number of experiment and no interaction between the factors, factorial design is the most complete and widely used technique where by all combinations can be tested, main and interaction effects can be easily captured and number of trials can be reduced [10,11].

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).

Results and Discussion Annealing of the samples implanted at RT resulted in a strong decrease of the total number of Al atoms and profile broadening both towards the surface and into the bulk (Fig.1).
The fact that not even a residual of the implantation peak was visible after Journal Title and Volume Number (to be inserted by the publisher) 2 the annealing and only slight diffusion into the bulk took place indicates that Al diffusion towards the surface and its attendant evaporation must be very fast.
Highresolution imaging and selected area diffraction have revealed that the re-crystallized layer contains 3C and 6H grains and stacking faults.
However, the lack of amorphization and the fact that most of the Al atoms were Journal Title and Volume Number (to be inserted by the publisher) 3 either trapped in precipitates [8] or occupied lattice sites resulted in significant suppression of their diffusivity.
Journal Title and Volume Number (to be inserted by the publisher) 4 Summary In conclusion, SIMS and TEM studies have revealed that redistribution of ion implanted Al in SiC during annealing reflected the amount of disorder, the type of damage and the initial state in which the Al atoms existed.