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Introduction Tungsten-copper alloy is false alloy, which has two structure of copper and tungsten.
With the development of the nanotechnology, using fine and homogeneous tungsten-copper composite powder, high density tungsten-copper alloy can be prepared by normal sintering process.At present ,there are many ways to preparate super thin powder already, for example, Mechanical alloying, spray-drying, sol-gel method, vapor deposition and chemistry precipitation, etc[7].This paper explores using chemistry precipitation to prepare tungsten-copper nano composite powder.

Synthesis and Property of a New Diarylethene Bearing both an Isoxazole Moiety and a Chlorine Atom Hui Li, Shouzhi Pu*, Gang Liu, Weijun Liu, Shiqiang Cui Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P.
The structure of compound 1o was confirmed by 1H NMR spectroscopy: 1H NMR (400 MHz, CDCl3): δ 2.03 (s, 6H, -CH3), 2.23 (s, 3H, -CH3), 7.24 (s, 1H, thiophene-H), 7.29-7.34 (m, 2H, benzene-H), 7.37-7.45 (m, 2H, benzene-H).
Irie: Chemistry Lett.

Preparation of Cellulose-graft Superabsorbent Resin Zongcheng Miao1,a, Fang Wang2,b, Deng Deng3,c, Yongming Zhang1,d, Lei Wang4,e*, Zhongjin Li4,f* 1Xijing University, Xi’an, Shaanxi Province, 710123, China 2Department of Chemistry, Shaanxi Institute of Education, Xi’an, Shaanxi Province, 710061, China 3Xi'an Modern Chemical Institute, Xi'an, Shaanxi Province, 710065, China 4Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry，Ministry of Education.
Low concentration of the cross-linker leads to low degree of cross linking, and it is hard for network structure to form, so the water absorbency is low.

The Ag-containing b’ rods have complicated domain structures.
Ag is observed inside the precipitates with a complicated structure consisting of the domains.
This structure is in agreement with the crystal structure of the b’-phase reported by R.
The schematic image in Fig. 2(b) shows the crystal structure of b’-phase.
The Ag-containing b’ precipitates have a complicated structure containing domains.

Polyaniline coatings: anionic membrance nature and bipolar structures for anticorrosion.
Structure and properties of polyaniline films prepared via electrochemical polymerization.I: Effect of pH in electrochemical polymerization media on the primary structure and acid dissociation constant of product polyaniline films.
Structure development in polyaniline films during electrochemical polymerization. Ⅱ: Structure and properties of polyaniline films prepared via electrochemical polymerization.
Materials Chemistry and Physics, 2006, 95: 294～299
Electroanalytical Chemistry, 1998, 445: 117～124

This approach has led to the design of novel structures with low energy band gap.
Then, the electronic structure of the investigated compounds was simulated using the DFT method.
All structures have completely flat geometries of donor and acceptors moieties except the ECz-diBTD compound.
Furthermore, the charge separation and transfer process within the planar intramolecular structure is more effective than the one in a twisted intramolecular donor-acceptor structure.
The Department of Chemistry, Faculty of Science, Srinakharinwirot University is gratefully acknowledged for providing research facilities.

Table 1 presents the dimension and the structure of the varied heat slug used for the analysis.
The 3D LED model with rectagular heat slug structure was meshed with 229302 tetrahedral elements.As for the LED model with cylindrical heat slug structure, it was meshed with 218400 tetrahedral elements with grid independence achieved for both models.
Furthermore, the von Mises stress and thermal resistance of the single chip LED with rectangular heat slug structure was lower than the single chip LED with cylindrical heat slug structure.
This is due to the superior surface area of the rectangular structured heat slug of 6 mm2 compared to the cylindrical structured heat slug of 4.71 mm2.
Wang, "A novel heat dissipation material for high-brightness light-emitting-diode devices," Materials Chemistry and Physics, vol. 139, pp. 741-746, 2013

Synthesis and Luminescent Properties of Monodisperse Spherical SiO2/ Ca10(PO4)6(OH)2: Eu3+ Particles with Core-Shell Structure Huan Wang* Department of Materials Science, Jilin jianzhu University, Changchun 130118, China Corresponding author.
The spherical core-shell structured SiO2/Ca10(PO4)6(OH)2 powder will improves possibly mechanical properties.
Because there exist two different cation sites C3 (4f) and Cs (6h) in the apatitic structure, so the Ca2+, Eu3+ ions are l˚Cated at sites with point symmetry closed to C3 and Cs [17].
Tampier: Materials Chemistry and Physics 78 (2003) 816
Lebugle: J Solid State Chemistry 177 (2004) 1179.

In this study, fabrics having a superhydrophobic and superoleophobic surface were prepared by a wet-chemistry coating technique using a coating solution containing hydrolyzed fluorinated alkyl silane and fluorinated-alkyl polyhedral oligomeric silsesquioxane.
Results and discussion Fig 1a shows the chemical structure of FD-POSS and FAS.
FD-POSS was found to disperse throughout the hydrolyzed FAS coating matrix, forming a composite structure.
Fig 1. a) Chemical structures of FD-POSS and FAS, b) SEM image of polyester fabric after the FD-POSS/FAS coating tretment, c) Photo of colored water (yellow) and hexadecane (red) on the FD-POSS/FAS treated polyester fabric, and d) influrence of liquid surface tension on the contact angle.

Atomic and electronic structures of Cu/sapphire interfaces by HRTEM and EELS analyses T.
It is, therefore, necessary to understand detailed interfacial structures of Cu/sapphire systems in order to improve the materials properties.
So far, there have been a number of studies on atomic and electronic structures of Cu/sapphire interfaces [1-7].
Fig. 2 shows energy-loss near-edge structure (ELNES) of O-K edge spectra in the Cu/Al2O3(0001) system.
A part of this work was also supported by a Grant for 21st Century COE Program "Human-Friendly Materials based on Chemistry" from the Ministry of Education, Culture, Sports, Science and Technology of Japan.