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In this paper the implementation of Genetic Programming (GP) to optimize a neural network structure for identification of the English letters.
Arrays of other types and structures can be used in essentially the same way.
The network structure is showed in figure 2.
Fig.2 The BP network structure The samples into the networks are showed in figure 3.
Fig.3 The BP network structure training samples Fig.4 The convergence curve Conclusion Based on the analysis of the genetic algorithm theory as the foundation, an optimal BP neural network structure is designed selecting GA optimization algorithm to optimize the number of hidden layer.

At the same time, the surface morphology, chemical structure and mechanical properties of PANI/PET composite fabric were studied by means of modern testing.
The PANI/PET composite fabric on the infrared spectrum at 1716 cm-1 peak decreases. 1579 cm -1 and 1494 cm-1 peaks are two of the quinone structure N = Q = N and benzene, the characteristic absorption structure NBN vibration absorption peak intensity ratio of two representatives of polyaniline chain structure and restore the structure of oxide content ratio [9].
It proved that the chemical structure on surface of polyester fabric is the polyaniline particles.
Acknowledgements The authors would like to express their sincere thanks to Zhejiang Provincial Top Key Academic Discipline of Applied Chemistry and Eco-Dyeing & Finishing Engineering, and Zhejiang Provincial Key Innovation Team (Grant No.2010R50038).
LiXiang Wang etc, Journal of applied chemistry. 5-4 (1988) 12-16

The three crystalline structures of BiVO4 were monoclinic scheelite, tetragonal zircon and tetragonal scheelite [5].
However, the photocatalytic activity of BiVO4 structure monoclinic scheelite is a much more active one than a structure tetragonal scheelite or tetragonal zircon structure [6].
These shift may correspond to distortion of VO4 tetrahedral structure, thus changed electronic structure.
Wang, Synthesis of monoclinic structured BiVO4 spindly microtubes in deep eutectic solvent and their application for dye degradation, J.
Daud, Effect of microwave power on the morphology and optical property of zinc oxide nano-structures prepared via a microwave-assisted aqueous solution method, Mater.

Coal chemistry is the key of coal comprehensive utilization technology foundation.
So coal separation from the molecular level and analysis has significance to study coal chemical structure and composition. [1].
Samples Samples come from original structure of coal in Pingdingshan 5th coal mine(OP5), tectonic coal in Pingdingshan 5th coal mine(TP5), original structure of coal in Pingdingshan 8th coal mine(OP8) and tectonic coal in Pingdingshan 8th coal mine(TP8).
“Mechanochemical action and deformed coal structure,” [D].
“The Characterization of Pore Structure Property of Solvent Extracts and the Composition of the Fractions,” [D],Chongqing: Chongqing University,pp. 1-12,2003

Tomilin 1 1 Department of Physical Chemistry, Moscow State Steel and Alloys Institute, Leninsky prosp.,4, Moscow,119049, Russia, e-mail: buntar@mail.ru; tomilin@misis.ru 2 Department of Chemistry, Moscow Lomonosov State University, Leninskie Gory, Moscow, GSP-3, 119899, Russia, e-mail: portnoy@general.chem.msu.ru Keywords: Ni-Al, high temperature alloys, additions Abstract.
The regularities of influence of the third components on the final structure of the as-milled and annealed alloys were observed.
The monoaluminide NiAl (B2 structure) is formed by an explosive exothermal reaction during MA of the Al100-xNix (46The distribution of alloying elements in the sublattices of intermetallics determines their mechanical properties and electronic structure [3-5].
Table 2.The ratios of superstructure and structure intensities for β phases.

Coagulant added in the effluents, Fe3+and Al3+ reacted with phosphate generated insoluble substance,part of the precipitation associated with phosphorus removal.At the same time,both of the hydrolysis of the polymer can be removed phosphorus further from effluents by double layer compression,adsorption and charge neutralization, bridging complex networks such as fishing and the role of surface chemistry. 2.
Polymeric aluminum-ferric chloride(PAFC) PAFC is inorganic polymer flocculant generated by the copolymerization of Al-Fe,PAFC is homogeneous structure,unlike the general mixtures of poly such as poly ferric and aluminum[15].It is wide used in water treatment like aluminum coagulant,turbidity removed effectual,little causticity on equipment;moreover,it has quicker depositional like PAF, easy separation,performed also well at low temperatures,pH range large, Meanwhile,it can effectively solve the problems of residual aluminum and PAF poor stability[16].
Research directions of Enhanced coagulation and phosphorus removal technology (1)Depth study of the mechanism of enhanced coagulation Strengthening research study in the interface contact flocculation and surface complexation theory based on the traditional coagulation mechanism,quantitatively describe floc formation,structure,behavior,performance using modern analytical techniques from the floc morphology, floc dynamics point of view,and analyze the mechanism of various factors
Vol.16(2003) p.279 [7] M.S Onyango, D.Kuchar, M Kubota,H Matsuda, Industrial and Engineering Chemistry Research Vol. 2007 46 (3), p.894 [8] J.H Qu.The principle and technology of safe drinking water.
Environmental Chemistry，Vol. 24(6) (2005) p 693 In Chinese [19] H C Liu，L Wang and W H Lv.

Usually, a useful semi-finished product for this superalloy’s category with improved structural stability (in service) and fine-grained structure is achieved by controlling the microstructure upon the conversion of the ingot (having coarse-grained structure) by severe plastic deformation via multiple isothermal forging steps.
Each of these occurrences (or combination of them) depends in turn on three parameters: initial microstructure, deformation conditions (i.e., temperature, strain and strain rate) and chemistry through its effect on solid solution and precipitation hardening [4].
Nowadays, a comprehensive understanding about the contribution of the alloy’s chemistry on the nature of the DRX mechanism is still lacking in the literature.
Material and Experimental Procedure A comprehensive description, including chemistry, preparation, transformation and heat treatments of Ni2 and 10. %.
In Fig. 2a, the microstructure of pure nickel has polyhedral coarse-grained structure, having an average grain size of 900 µm, along with some annealing twins.

We can conclude that with the annealed temperature increase, the films structure likely turn cubic to hexagonal.
Besides, the films annealed with CdCl2 forms a layer of CdCl2 films with loose structure at CdS films surface.
The loose structure can increase the specific surface area.
Chemistry of Materials 14 (2002) 1773-1777
Chemistry of Materials 20 (2008) 6784-6791

Among them, hydrothermal or solvethermal method is regarded as a very effective and potential soft-chemistry route to tune the architectures of cadmium sulfides.
They elaborated that a slight change of the side group of amino acids can significantly influence the type and the structure of CdS crystals.
Yaohua Xu et al[10] synthesized CdS microspheres with hierarchical structures by sodium dodecylbenzenesulfonate as structure directing reagent (Figure 1F).
Prospects Cadmium sulfides nanostructures have novel properties and functions corresponding to their unique structures.
Pak, Russian Journal of General Chemistry Vol. 80 (2010), p. 2238 [18] V.

Figure 1 shows its crystalline structure.
The nanoporous silicon structure could be imagined as assemblies of these basic building blocks.
For the column model with corner silicon atoms, it has a model structure as shown in Figure 5(a).
Journal of Physical Chemistry - B 2005; 109:19711-19718
Chemistry the central science.