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Due to the nature of the casting process, the ingot usually contains a number of defects such as porosities due to gas entrapment or improper feeding during solidification, segregations and coarse grain structure due to long cooling times.
They confirmed the importance of utilizing a V-shaped lower die, but only investigated a small number of die angles.

However, higher temperature promoted the decomposition of the cross-linking agent, generated large number of acetophenone and increased seed charge for electrical breakdown. in addition,excessively high temperature generated dense three dimensional grid due to over excessively high cross-linking degree. [5]That had a greater impact on the growth of crystals, decreased uniformity of the crystal, increased the number of small grains and enhanced the length of mean free path of electrons,which made the breakdown more easy.

The raw materials used to produced biochar mainly include wood chip and wood pellets, tree bark, crop residues (including straw, nut shells and rice hulls), switch grass, organic wastes including distillers grain, bagasse from the sugarcane industry and olive waste, chicken litter, dairy manure, sewage sludge and paper sludge [3].
Cu2+, Zn2+, Pb2+, Hg2+ and NO3-) and a number of polar or non-polar substances such as polycyclic aromatic hydrocarbons (PAHs), dioxins, and furans (PCDD/Fs).
There are number of studies show that the incorporation of biochar in soils influences soil structure, texture, porosity, particle size distribution and density.

Water cut in floater sample was measured by distillation method, oil cut was gained by organic solvent extraction of distillation remnant after which solvent was evaporated,soil cut was gained by drying of residue of extraction.Results showed that water cut was 65.3%,oil cut was 17.5% and soil cut was 17.2%.After process residual solid presented grey white,in which particles with grain size over 200 mesh accounts for more or less 90%.
Table 1 Energy Spectrum Analysis Plan Number Average element content(%) C 0 Al Si Cl Ca Na Fe S 1 50.14 40.23 4.68 1.89 0.86 0.69 0.62 0.50 0.40 2 49.15 41.89 4.55 1.83 0.78 0.58 0.56 0.40 0.25 As shown in Table 1, element composition and content were almost same in Sample 1 and Sample 2, the main substance of which are organics and non-crystal inorganic component.
A large number of tiny air bubbles were formed during air floation, which could adhere to oil or floater in water .The adhesive action of bubbles depends on wettability of water to particles.

Numbers in brackets indicate the number of tests conducted for each strain rate.
The Microstructure Features and the Deformation Mechanism of a Fine Grained Magnesium Alloy under Dynamic Loading.

High temperature, as mentioned above, induces degradation of hemicelluloses in the wood and consequently reduces the number of free hydroxyl groups.
Aknowledgements This study was supported by 948 project titled “import of key technology on densification and heat treatment of fast wood” (number: 2011-4-12) and the Priority Academic Program Development of Jiangsu Higher Education Institutions.
The influence of hygrothermal treatment on compression of beech perpendicular to the grain.

(3) where δi presents the atomic stress for atom i, Vi the corresponding atomic volume, m the number of atoms contained within each bin, ΔV the volume of each bin.
In addition, the number of the particles contained within the computation system is limited due to the poor computational condition, as may also enlarge the statistical average error.
Dongare, Defect and damage evolution during spallation of single crystal Al: Comparison between molecular dynamics and quasi-coarse-grained dynamics simulations, Computational Materials Science 145 (2018) 68-79

Heterogeneities occur over a broad range of scales, from submillimeter grain and pore scale, to the many-kilometer basin scale.
The sampling number of each channel is 4096 with sampling rate 0.2.
The heterogeneous structure is between the two red lines whose shot numbers are 23 and 173 respectively.

The Principle of Abrasive Air Jet Micromachining In Abrasive Air Jet Micromachining (AAJM) process, nozzle of sand blasting is reduced to submillimeters, and active range of abrasive air jet stream is controlled and focused, micromachining is carried out by abrasives erosion on to the local range of workpiece surface at high velocities and Journal Title and Volume Number (to be inserted by the publisher) 649 high density.
The abrasives are Al2O3, SiC whose grain size are 3~40 µm, abrasive flow rate is below 70 g/min and non-recirculating.
Journal Title and Volume Number (to be inserted by the publisher) 651 Studies on the Process of AAJM.

In recent years, China's southeast coastal areas , especially a lot of water has been polluted to varying degrees of organic poisons , and even detected a large number of toxic organic pollutants in some drinking water sources .
The chemical formula of metal vanadates compounds as AxVyOz (A is the alkaline metal or transition metal), which is a kind of scheelite type structure ABO4 wolframite / material, because of its unique structure and physical and chemical properties, has a luminous materials, ferroelectric, piezoelectric, widely uses in order to attract a large number of 'eyes.
And also by sonochemical method of monoclinic BiVO4 grains were prepared, and the band gap is 2.45 eV, can produce the hole electron excited under visible light, within 30 min of methyl orange solution degradation rate can reach above 90%.Preparation of BiVO4 activity compared with the methods of solid samples and prepared by TiO2 (P2O5) activity were high.