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Figure 3 Gas channel section （the black part） Because of the importance of gas channel, at home and abroad a lot of work have been carried on how to design gas channel structure and what kind of rib is better,but the results are not ideal.
Publishing company of chemistry industry(2003) [2] Liang Shui-po,Sun Nan, Yang Wei.The MPI 3D-simulation and experiment of the gas penetration behavior during gas-assisted injection-molding, Polymer Materials Science and Engineering, 25(8)( 2009) [3] Tumg L S, Development and application of CAE technology for the gas-assisted injectionmolding process.

Fig. 1 Composite material structure[21] Lewin[22] derived an expression in 1947 for the effective permittivity and permeability of a composite material which is constituted of an array of lossless magnetodielectric spherical particles with the permittivity ε2 and permeability µ2 embedded in a background matrix with the permittivity ε1 and permeability µ1(Fig. 1[21]). the effective permittivity and permeability for the composite shown in Fig. 1 are as follows[22] (3) (4) where , (5) (6) , (7) r and p are the sphere radius and the lattice constant, respectively.
Brus: Journal of Physical Chemistry B, Vol. 105 (2001) No.3, p.599 [11] S.V.

Sintering is associated with remarkable shrinkage of the material due to the fact that glass phases flow, once their transition temperature is reached and start consolidating the powdery structure and considerably reducing the porosity of the material.
It is a combination of polymer chemistry with slip technique and represents minimal departure from standard ceramic processing [1].

Study on the Adsorption Performance of Zn(II) over Bentonite Guoxiang Pan*, Yajing Zhang, Dagan Chai, Yanfei Yu Department of Materials Chemistry, Huzhou Teachers College, Huzhou 313000, P.R.
Montmorillonite clay mineral with a 2:1 layered structure, the basic structural unit of the crystal consists of two silicon-oxygen tetrahedron layer and a layer of aluminum octahedral layer[6].

Physical simulations, which effectively reveal the principles of materials' structure and properties evolutions, save the time and money significantly whereas numerical simulations enable the full description and design of various material processes which are impossible experimentally.
A.Stanciu "Petruponi"institue of macromolecular chemistry Romania Prof.

The unique characteristics of CNT such as having good chemical, mechanical, electrical, and thermal properties [2], together with the nanoscale structure (high surface area and high porosity) [3] made CNT is widely use in electronic devices [4], hydrogen storage [4], adsorbent [5], for structural reinforcement of polymers [6] and many more.
According to International Union of Pure and Applied Chemistry (IUPAC), the isotherm for pristine and modified MWCNT show a type IV shape indicates a rise of nitrogen adsorption capacity with the increasing pressure [9] and characterize that most of the pore is in mesopore size, between 2 nm to 50 nm.

The green chemistry is the most favorable way to produce eco-friendly gold nanoparticles at low-cost. [3].
The indexed reflection peaks are corresponding to the metallic gold with face centered cubic (fcc) structure, similar to Joint Committee on Powder Diffraction Standards (JCPDS) file no: 04- 0784 revealing that synthesized gold nanoparticles are of pure crystalline gold.

Fabrication of ultrathin free-standing ceramic chips based on printing technology Wenwen Kong1, 2,3,a, Bo Gao2,b, Chunping Jiang1,2,c* and Aimin Chang2,d** 1 Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, Suzhou 215123, China 2Key Laboratory of Functional Materials and Devices for Special Environments of CAS; Xinjiang Key Laboratory of Electronic Information Materials and Devices; Xinjiang Technical Institute of Physics & Chemistry of CAS, 40-1 South Beijing Road, Urumqi 830011, China 3 University of Chinese Academy of Sciences, Beijing 100049, China awwkong2011@sinano.ac.cn, byunxiang0628@126.com, c* cpjiang2008@sinano.ac.cn, d**changam@ms.xjb.ac.cn Keywords: Screen printing, Free-standing, Ultrathin chips, Ceramics.
They all show the well developed single phase spinel crystalline structure (according to the JCPDS card No. 01-1110).

Elliott, Structure and Chemistry of the Apatites and Other Calcium Orthophosphates, Elsevier, Amsterdam, London, New York, Tokyo, 1994, pp. 6-11.

China 2 Department of Materials and Chemistry Engineering, Guilin Institute of Technology, Guilin 541004, P.
The mullite nanocomposite samples were later analyzed to determine their structure and component.