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Up to now, besides technological routes to recover chromium from the slag by using reducing agents such as Si, C and Al [4,5], a number of researchers have experimented to incorporate Cr (III) into more stable mineral phases as MgCr2O4 spinel [6,7], or to immobilize Cr (VI) in amorphous vitreous phase [8].
Table 1 Batch compositions of slag systems used for experiments Slag number wt % Basicity (CaO/SiO2) CaO SiO2 MgO Al2O3 Fe2O3 Cr2O3 B2O3 S-1 36.4 45.6 5.0 4.5 6.5 2.0 0 0.8 S-2 41.0 41.0 5.0 4.5 6.5 2.0 0 1.0 S-3 40 40 5.0 4.5 6.5 4.0 0 1.0 S-4 50.4 33.6 5.0 4.5 6.5 0 0 1.5 S-5 49.2 32.8 5.0 4.5 6.5 2.0 0 1.5 S-6 48 32 5.0 4.5 6.5 4.0 0 1.5 S-7 54.68 27.34 5.0 4.5 6.5 2.0 0 2.0 S-8 47.7 31.8 5.0 4.5 6.5 4.0 0.5 1.5 A melt-quenching experiment was performed by putting 50 g of mixed powders based on each slag system (see Table 1) into a platinum crucible which was placed in an alumina protecting crucible and loaded inside a vertical furnace equipped with MoSi2 as a heating element.
Moreover, the region between fine strip grains of merwinite is a matrix phase consisting mainly of Si, Cr, Ca, Fe, Al, Mg, and O.

In industrial applications, exists great potential diversity, however, there are restrictions related to: the stiffness of the system robot/environment; the complexity of the programming interface and position control; the strong remaining limitations of the system speed response and the high cost of sensors to reduce the number of systems now in full operation, excluding devices demonstration, education and research.
The use of force control for machining can compensate the power demand by changing the cut rate or by a subdivision of the incremental number of machining passes.
The disc was used for grinding grain brown fused alumina, #100 mesh, glassy alloy, with an outer diameter of 40 mm and a thickness of 1.5 mm.

., during an impact of different size and mass grains into aircraft skin plating, which occurs in the first and second phase of takeoff and landing as well as during taxing.
Information concerning samples Type of fabric reinforcement Number of reinforcement layers The average weight of a single sample [g] Mass fraction of reinforcing fabric in the sample [g] The mass fraction of resin and hardener in the sample [g] Percentage of fabric reinforcement in the sample Percentage of resin and hardener in the sample Glass 7 16.50 5.38 11.12 32.6 67.4 Glass and carbon 5 – glass fabric 16.22 3.84 10.84 23.7 66.8 2 – carbon fabric 1.54 9.5 In the first phase, we prepared control boards, which measured 250 x 350 mm.
The test findings of the samples under impact loading are characterized with an extensive range of values, which indicates the need to increase the number of sample groups under this kind of impact loading to achieve higher reliability of the tests.

At the same time, it can also express number changes of cultivated land within a certain time, the formula as follows[1]: (1) is the dynamic degree cultivated land change in the period; represents the terminal year area of cultivated land; is the initial year area of cultivated land; represents the year interval, if the value of is positive, it has represented an increase of cultivated land over this period; if not, it has represented an decrease of cultivated land over this period.
Driving forces analysis of dynamic change of cultivated land resources According to the thoughts and requirements of the principal component analysis, the data from 2001 to 2010 were selected as the base, combined with the collected data, 12 representative index were selected :X1 represents total population (million), X2 represents rural population (million), X3 represents GDP (million), X4 represents per capita GDP (yuan), X5 represents total retail sales of social consumer goods (million), X6 represents fixed asset investment (million yuan) , X7 represents the added value of first industry (million), X8 represents the added value of second industry (million yuan), X9 represents the added value of the third industry (million yuan), X10 represents grain yield(T), X11 represents net income of rural residents (yuan),X12 was the total power of agricultural machinery (10000 kW) [4].
Changes in social total retail sales of consumer goods was large, about 3.25 billion yuan in 2010, accounted 3.14 times of 2001(1.03 billion yuan), the rapid development of township enterprises, the development and perfection of factory premises and infrastructure in construction constantly prompted economic development, but also caused a large number of cultivated land were occupied for non-agricultural construction, resulting in the loss of the amount of cultivated land.

Besides, there are also a number of twins observed on the vertical section, as well as some large cracks.
It is known that the twins are prone to occur when the motion of slip system is blocked in magnesium alloys, so the present formation of a number of twins should be attributed to the precipitation strengthening of Mg2Sn phase by restricting the slip system activation.
Higashi, Ductility enhancement in AZ31 magnesium alloy by controlling its grain structure, Scripta Mater. 45 (2001) 89-94

The number and position of the strain gauges in the test specimens is shown in Figures 3 and 5.
properties of the concrete mixture Age of concrete 18 hours 42 hours 66 hours 14 days 28 days cube compressive strength [MPa] 38.3 49.2 54.4 61.7 65.0 comp. strength – Schmidt – type R [MPa] 35.0 --- --- --- --- comp. strength – Schmidt – type N [MPa] 38.3 41.5 46.0 49.2 51.0 tensile splitting strength [MPa] 2.80 3.41 3.63 3.90 4.06 flexural tensile strength [MPa] 3.39 4.08 4.31 4.89 5.01 Table 3: Average shrinkage in individual specimens Age of concrete 1 day 3 days 7 days 36 days 68 days 91 days shrinkage [‰] specimen thickness 75 mm 0.52 0.58 0.62 0.83 0.87 0.90 specimen thickness 125 mm 0.48 0.51 0.54 0.70 0.74 0.75 specimen thickness 150 mm 0.40 0.41 0.44 0.57 0.62 0.63 specimen thickness 200 mm 0.37 0.39 0.42 0.55 0.58 0.60 The amount of cement is normally increased in order to achieve an early concrete strength needed to manipulate the prefabricate and in order to improve the workability of the concrete to which cement contributes significantly together with other fine-grained
Testing concrete in structures – Part 2: Non-destructive testing – Determination of rebound number.

D is the drained stiffness matrix of the soil, ε is the soil skeleton strain, δ is the Kronecker delta, F is the vector of body force per unit volume, af is the apparent compressibility of the fluid, cf is the compressibility of the fluid, cs is the compressibility of solid grains, c is the drained compressibility of the solid skeleton and η is the effective stress parameter. u stands for the displacement vector of the soil skeleton and pf is the pore fluid pressure.
The smoothed strain-displacement matrices B1i can be expressed explicitly as B1i=bix100bix2bix2bix1 (8) in which the components are obtained by summation over all the quadrature points along the segments of the boundary of each smoothing domain, bil=12Ωkm=1 NsegLmkn=1 Ngauwn ϕixmn nlxmn (l=x1,x2) (9) where Nseg is the number of line segments of the boundary Γk, Lmk is the length of the mth segment of Γk, nl represents the component of the unit outward normal to the corresponding segment of Γk and Ngau is the number of quadrature points used in each segment of Γk, which is taken two for both CSPIM and CSRPIM in this study. xmn is the nth quadrature point of the mth segment of Γk, and wn is the Gauss integration weight of the corresponding quadrature point. ϕixmn is the shape function value for node i at the point of interest xmn.

The length of each debris is proportional to the average length of dislocation junctions , and the number of debris in the shear zone equals to , where is the fraction of non-breaking junctions.
The given work includes evaluation of a fraction of insurmountable junctions from the total number of junctions under a fixed deformation axis [100] for different dislocation densities.
Popova, Grain structure, geometrically necessary dislocations and second-phase particles in polycrystals of micro- and meso-levels, Phys.

The reaction concentration of 0.3mol/L even when a large number of particles generated particulate alumina having an average diameter of about 100 nm, more complete crystallization at this time (Fig.2-c).
The core is formed without causing a large number of nuclei have enough time to grow further when the rate is greater than the growth rate of nucleation.
The reason may be as follows: temperature, grain also will grow, thus alumina particles grow.

Changchun as the famous industrial city, with the development of the city, "retreat into three" proposed policy, many industrial business bankruptcies, a large number of industrial legacy buildings were abandoned in the city.
Today, the industry has become the dominant economic force in Changchun, Changchun City, China's largest auto industry, is the new China Automotive Engineering photonics technology, biotechnology, applied chemistry cradle. 1.2 Reasons for the formation of the industrial legacy building Changchun City in 1953-1958 during the first five-year plan built a large number of industrial buildings，mostly located in the suburbs around the city, planning and construction of industrial zones.
（Picture 1, 2, 3） Picture7 Tian Xingfu mill fire Picture8 Fushun thick fire mill Picture9 Surroundings 2.1.1 Feature Before the liberation, Russo-Japanese occupied Changchun and construct in their occupied territories as flour, grain and oil processing based industrial buildings and its outbuildings.