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（3）Complex admixture：slag,fly ash,natural mineral （4）Stone: 5mm～25mm gravel, crushed target of 4.8%, the grain shape is good, graded, in line with JGJ53-92 "concrete with crushed stone or gravel quality standards and inspection methods" requirements
Table 1 Concrete mixing ratio for sulfate erosion test Number concrete admixture sand stone water Superplasticizer M0 450 0 743 1027 170 1.5 M1,2 405 135 743 1027 170 1.5 The compressive strengt of the concrete has been testd according to GB/T50081-2002 "ordinary mechanical properties of concrete test method standards".
Table 2 Concrete test for sulfate erosion Number Compressive strength after 28ds’ standard curing (MPa) Compressive strength after 28ds’ immersing (MPa) Compressive strength after 56ds’ immersing (MPa) A B C A B C M0 64.1 68.8 64.6 61.2 74.9 72.8 68.7 M1,2 64.6 73.3 76.9 75.6 75.5 73.9 73.9 Results and discussion From Table 2 , the compressive strength of the concrete with admixture mineral and without admixture mineral has been compared after 28ds’ and 56ds’ immersing in water(A),5 % NaSO4 (B)and 5% MgSO4(C) solution,as shown in Figure 1 and Figure 2.

A number of methods have been developed for the preparation of Mg(OH)2 materials with different morphologies [7-9].
Nearly all diffraction peaks can be indexed as the hexagonal structure of Mg(OH)2 (JCPDS file number 7-239).
Moreover, the peaks of the samples are broadened due to the small grain size of the Mg(OH)2 particles.

Mass Action Law and Arrhenius equation Based on a lot of experiments, in 1864 Guldberg and Wagge drew the conclusion that under certain temperature, the reaction rate of elementary reaction is proportional to the product of power whose base is the concentration of every reactant and index is the number of reaction molecules
In 1889, the Swedish chemist Arrhenius summarizes a large number of experimental facts and put forward the constants of reaction rate: （3） Because （4） is the conversion rate of reactant A Therefore： （5） By combing(2), (3), (4), (5), we can obtain（6） （6） a is the molar mass of the reactant A, L is the volume of the reactant A, T is the thermodynamic temperature.
[10]Yao Yaguang, Ji Wei, Ji Taijun Study on Transesterification between Waste Oils and Methanol or Ethanol Based by Acidity[J]Grain and Grease 2005,10: 20-22

It is known that thin films deposited by pulsed-laser ablation using ultraviolet light are uniform and have a smaller number of droplets due to the high energy of the light [1-2].
It is relatively easy to control the thickness of the thin film, because the thickness is proportional to the number of light pulses.
The grain size distribution of the thin film deposited in O2 gas including oxygen radicals was relatively uniform and the surface was flat.

A large number of sustainable development ideas contained in vernacular architectures can be also employed in planning and construction of modern cities and towns.
The latter is also used as grain-sunning ground.
In order to form space layout of open type inside with the functions of dehumification, ventilation and absorption of more sunlight, a large number of facilities are set by local residents, such as skywells, adjustable partition doors , belvedere and boudoirs etc.

Also, deformation bands, regions of distortion where a portion of a grain has rotated towards another orientation to accommodate the applied strain, were propagated along the stress field (Fig. 2 (b)).
Fig. 2 (c) shows the crack growth through Mg17Al12 or Mg/Mg17Al12 interface (KI=12.70 MPa m ) and a number of fine deformation bands, "shear band [11]" were observed far from the notch tip.
At the maximum load(KI=16.13 MPa m ), Fig. 3(d) shows the crack growth near notch tip and the number of fine shear band around secondary phase to the main shear band(with 45° to the notch crack direction).

(a) 0wt% (b)10wt% (c)20wt% (d)30wt% Fig.2 SEM of the material with different BN content From Fig. 2 (d) that the microstructure of the material substantially changed with large number of BN addition.
Due to the large number of BN affected the growth of silicon nitride crystal.
BN inhibited the sintering of Si3N4 and hindered grain growth of β -Si3N4[4].

The results from stress versus number of cycles curves showed that the fatigue resistance is not affected by the “dynamically” induced martensite in annealed specimens at both temperatures.
The specimen microstructure was found to consist of equiaxed grains with average size of 50 µm.
Temperature (°C) s0.2% (MPa) s20% (MPa) 25 230 577 -196 471 1127 Figures 3, 4, 5 and 6 show the stress versus number of cycles (SN) fatigue curves for programmed tests A, B, C and D, respectively.
In these figures, one notice that, as expected [1,2], all SN curves are associated with a fatigue limit (FL) corresponding to a level of stress, below which rupture will not occur regardless the number of cycles.

Dissolved elemental impurities can be removed by a number of different processes including boron treatment for some of the transition metals.
A number of methods have been tried both in the laboratory and on an industrial scale to remove impurities from Al melt but only some of them have been successfully commercialized.
Effects of Residual Transition Metal Impurities on Electrical Conductivity & Grain Refinement of EC Grade Aluminum. in TMS Annual Meeting. 1997.
Light Metals 2006 Vol 4: Cast Shop Technology & Recycling - Aluminum, 2006: p. 753-8 [51] Towsey, N., et al., The influence of Grain Refiners on the Efficiency of Ceramic Foam Filters.
Krug, The Effects of Rod Grain Refiners with Dffering Ti/B Ratio on Ceramic Foam Filtration.

Sound N management practices need to be established to improve N use efficiency leading to high grain yield levels and minimal fertilizer N loss to the environment.
The growth status of rice plants, including height, panicles per hole, and spikelet number per panicle were recorded.
The effective panicles and panicle number per plant under the treatment of 300 kg ha-1 was higher than other treatments.
Maximum mean grain yield was obtained at 270 (N2) kg N ha-1.
At the milk grain ripening stage, chlorophyll content from the four N fertilizer treatments was higher than the control.