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Based on the study of slow and controlled release fertilizer, we summarized a large number of research materials at home and abroad, comprehensive elaborated the development progress of slow and controlled release fertilizer in China, and reviewed the utilization efficiency of fertilizer in different corps.
Yuan Put forward：in order to improve the yield of grain, can only rely on science and technology,” good seed, good law and excellent field”is very important.
At present our country sustained and controlled release fertilizer leading enterprise "s" company, developed a lot for a single material slow-release fertilizer, the characteristics, the crop nutrient absorption of planting the crop soil structure and factors such as climate change, through a lot of experiments developed a large number of specific slow-release fertilizer, better yield, efficiency. 3.

Therefore, with the increasing size of deposition chamber, the number of coating sources needs to increase for depositing coating at an economical rate.
In an industrial-scale sputtering chamber with a limited number of active magnetron sources, the density of coating species from different targets would not be uniform everywhere around the chamber.
In the TiN+MoSx coating, peaks were shifted to lower angles and slightly widened compared to pure TiN coating (Fig. 7), which indicated an increase in the lattice parameter and a reduction in grain size respectively.
These observations in addition to the absence of MoSx phase in the coating suggested that Mo and S atoms were possibly incorporated into the cubic TiN lattice or segregated at the grain boundaries [7, 10].
The method showed a huge potential to improve the deposition rate of multicomponent coatings when there are a limited number of active coating sources in an industrialscale coating deposition chamber.

Thirdly the calculation time increases sharply by the particle numbers.
According to literature [5], the sample dimension should be greater than 10 times the biggest grain diameter.
The node number of input layer is determined by number of observed deformation data.
The node number of hidden layer is determined by test, which approaches to double of node number of input layer.
The node number of output layer agrees with number of identified parameters.

Calculating Method of Ground Depth of Cut in Spark-out Grinding In spark-out grinding process of the surface grinding, number of grinding wheel passed the workpiece is defined as number of spark-out pass in this study.
Table 1 Grinding condition Grinding machine Okamoto Surface grinder PSG-52AN Grinding wheel WA60J6B, f200 x f50.8 x 25 Workpiece NAK55 Peripheral speed 1800 [m/min] Dressing lead 0.5 [mm/rev] Number of spark-out pass 10 spark-out passes Table feed speed 3.3 [m/min] Applied depth of cut 15 [mm] Stiffness of grinding machine 42.3 [N/mm] Support stiffness of a single abrasive grain 0.37 [N/mm] Number of cutting points per unit area 3 [points/mm2] Force sensor Grinding wheel Workpiece Table Fig. 4 Schematic diagram of surface grinding The table down amount ht differs in cutting direction which is up-cut grinding or down-cut grinding.
However, comparing calculated results with measured results of ground depth of cut, it is known that calculated results differ from measured results with the increase of number of spark-out pass.
Therefore, the spark-out grinding time can be estimated as number of spark-out pass in which calculated result of ground depth of cut reaches continuous amount.
Acknowledgment This research was supported by a Grant-in-Aid Scientific Research (Year: 2013, Science Research (C), Subject number: 25420068) from the Japan Society for the Promotion of Science.

The names corresponding to the clay numbers in Fig. 1 are displayed in Table 1.
Consequently, clay number 39, Tetegbu clay, located in the Greater-Accra Region, meets the essential requirement perfectly.
The clays that meet the criteria for flux but with slightly lower alumina content are numbers 3 (Afransi) and 43 (Anfoega Kaolin), located in the Volta region.
In similar research, excessive zirconia doping was found to aggregate and inhibit grain boundary movement needed for mullitisation [40].
With its bigger grain size compared to clay minerals, uniform distribution of grogs can also stop the propagation of crack tips.

Feasibility of Railway Washing Wastewater Disposal by Improved CRI Shichao Cao 1,a,Yuanfu Li 1,Zhaoyu Li 1,Xiaoyi Qian 1,Lie Xia 2,Wenlai Xu 3,b＊ 1College of Civil Engineering, Southwest Jiaotong University, Chengdu, China 2China Railway ErYuan Engineering Group Co.Ltd, Chengdu, China 3College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu, China aE-mail: dancen3168@sina.com, bE-mail: 296794884@qq.com Keywords: railway washing wastewater; sponge iron; CRIs; TP; removal efficiency Abstract: Railway washing wastewater, containing a large number of carbohydrates, fat, protein, cellulose, and other organic pollutants, will cause serious pollution, result in production of foul-smelling matter, impact on the survival of aquatic life and hinder the sustainable development of railway transport, if the wastewater is directly discharged into the nature water body.
Introduction The need for treatment of railway washing wastewater which contains a large number of carbohydrates, fat, protein, cellulose, and other organic pollutants is now imperative, because the water can cause serious pollution and impact on the survival of aquatic life and hinder the sustainable development of railway transport, if the wastewater is directly discharged into the nature water body(Wang, 2003).
CRIs is a new type of ecological wastewater disposal technology with high efficiency, low consumption, convenient operation and management, low investment and bright application perspectives, which has been applied to a number of engineering practices successfully in several areas and achieved good social, economic and ecological benefits.
In order to ensure higher the hydraulic loading, infiltration mediums in traditional CRIs are often coarse sand which has little sticky grain and iron, aluminum and calcium and cation exchange capacity of medium is less, therefore, adsorption effect of phosphorus is poor [7].

China has a large area and a huge number of villages and towns, where rural roads are desired to connect villages and towns with rural areas.
For example, if the number of small-sized vehicle is large and travelling speed is slow, the width of intermediate zone and strip should be the smaller value.
In order to ensure the concrete strip roads having long-term moisture stability and freezing stability, the grain material which has a good water stability should be the first choice for base course.
According to the changes of slab thickness which are influenced by the cumulative number of standard axle loads (graded by producing 0.02m slab thickness change), strip roads traffic is divided in these levels: light traffic-1 (the cumulative number of standard axle load is between 30000 and 10000), light-grade 2 (the cumulative number of standard axle load is between 10000 and 3000).
If the cumulative number of standard axle load is less than 3000, it can use the curve of 3000 to design structure.

The bright primitive length is defined as LBi(j), It represents the number of primitive sequence of "1".
The dark primitive length is defined as LDi(j),It represents the number of primitive sequence of "0" .
(2)Statistics numbers of black and white transitions per line , such as (8) .Taking into account the characters, background interference and other factors, plate region is generally composed of seven characters and borders , the number of transitions of each line within the region of 18 times at least, the transition threshold is set to 24
Positioned around the boundary According to the real license plate character area than most pseudo- plate region in the vertical projection of the direction of the peak - valley distribution with intermittent and intensive ,proposed use of the vertical projection method to remove the pseudo -plate region ,Then, the license plate area has a number of characteristics of transition than the other with the size of the region to define a rectangular sliding window ,sliding from left to right and statistics times of jump within the window .Lastly, to find window position that the number of transitions is most as the boundary position of rough location , which shown in Figure 3 .
The first license plate image preprocessing, including gray scale stretching to balance the light, the median filter to remove grain noise , enhance the level of differential edge features , etc.; line scanning method according to the license plate texture features of the region and sliding template the method for coarse positioning ; projection characteristics of the license plate region using the mean smoothing method and the backtracking fine positioning .

In this paper we investigate relationship between parallel efficiency and grain of calculation load and accuracy for analysis of acoustic propagation further.
By adding the following rules, it can decreases number of rules from 256 rules to 32 rules
In order to keep load balance in each domain, a domain is divided into subdomains which have the same number of cells individually.
Therefore if number of processors increases, speed up ratio decreases in case of 11x11 and 21x21 models.
Number of space divisions is 601×601.

There are a number of different raw materials, such as kaolin [16], rice husk [14, 19], sepiolite [17, 20], silicates [21-22] used as a silica source for the production of Si3N4 powder.
The schematic representation of the grain model for the carbothermal reduction-nitriding of silica with solid carbon at temperature between 1300-1500ºC Any of those steps can be rate controlling factors.
Grain model can be suitable for reactions with porous materials.
SEM micrograph of the powder It is observed that during the CRN process, several other processes are occurred simultaneously and there are large number of variables such as chemical composition of starting materials, carbon content of the mixture, nitrogen flow rate, carbon monoxide content, particle size, reaction temperature and reaction time of which effects both the reduction nitriding and kinetics of the CRN process.