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The characteristics of the crystallite structure of the prepared samples were determined using an X-ray diffract meter with a Cu K radiation (D/max2400).
Materials Chemistry and Physics, 2004, 84(2/3):291-301

Preparation of Polymer Suppressant in Coal Transportation under single mode microwave irradiation Lai Shuili1,a, Gao Yinghua1,b and Chai Qiang1 ,c 1Key Laboratory of  Auxiliary Chemistry & technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an, 710021, Shaanxi, China; alsl25206@163.com, bgaoyinghua1984@126.com,cchaiqiangwang2@163.com Keywords: microwave irradiation; polymer suppressant; acrylic acid; acrylamide; oxidized starch; Abstract.
As shown in Figure 3, the network structure is destroyed and increase of small molecular weight when the radiation time is too long, this would results in a decrease the viscosity and compressive strength.

Superoxide dismutase (SOD) could remove excessively reactive oxygen, maintain its metabolic balance and protect the structure of film in the process of aging, so it played an important role in delaying death.
Journal of Polymer Science Part A: Polymer Chemistry,1996,16(34):3417-3425

Introduction The magnesium is a lightest structure material and widely used in the aircraft industry before.
[3] SHIH T.S., WANG J.H., CHONG K.Z., Combustion of magnesium alloys in air, Materials Chemistry and Physics 85 (2004) 304-309

Fig.1 Structure diagram of evolution trees Fig.2 Building process of evolution trees The technology of thermal ink-jet is to generate joule heat with using the heated micro heater (electric pulse control).
There may present a kind of paper that it could show graphics and texts under the effect of field and chemistry.

This combination of good properties derives from the metallic nature of the bonding and from the layered nature of the structure [3, 4].
Acknowledgements The present work was supported by the National Natural Science Foundation of China (No.51062018), the Natural Science Foundation of Yunnan Province (No.2012FB173) and the Natural Science Foundation of Yunnan Province (No. 2010CD088) and the Key Subject of Materials Physics and Chemistry of Honghe University.

College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, Hunan, PR China Keywords: TiO2-coated carbon felt; supercritical treatment; congo red; photocatalysis Abstract: TiO2–coated carbon felt (TCF) was prepared via a supercritical treatment with titanium tetraisopropoxide (TTIP) and different carbon felt as a precursor and support, respectively.
Among these materials, carbon felt has several advantages over traditional granular carbon, mainly due to more uniform pore structure, high permeability and mechanical resistance.
Characterization of structure The obtained TCF was characterized by measuring BET surface areas via the nitrogen absorption method (ASAP2010; Micromeritics Company, USA) at 77 K.
(cm3/g) Cry. size a (nm) Energy of the band gap b [eV] P25 50.0 – – – 21.0 3.47 TCF1 463 0.03735 1300 0.7853 20.4 3.36 TCF2 694 0.04297 1500 0.8237 18.3 3.27 TCF3 878 0.05238 1600 0.8469 15.2 3.11 TCFn, where n is the code of carbon felt support with the same surface chemistry.

Introduction The horizontal well’s structure in thickened oil recovery is complicated, and high-accuracy pipe of filter sand can’t achieve the mechanic water-plugging and mechanic sealing.
The crosslinking network structure packed a mount of water in molecular net compactly and regularly.
Oilfield Chemistry. 2012. 29(2): 167-171
Oilfield Chemistry. 2007. 24(1): 75-78

Investigation of Indigenous Microbial Enhanced Oil Recovery in a Middle Salinity Petroleum Reservoir Yuehui She1,2, Fuchang Shu1, Zhengliang Wang1, Longjiang Yu2* 1College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China 2School of Life Science and Technology, Huazhong University of Science & Technology, Wuhan 430074, China *Corresponding author (e-mail: bjbios002@126.com) Keywords: Middle salinity petroleum reservoir；indigenous microbial community；degradation of crude oil；biosurfactant；microbial enhanced oil recovery Abstract.Culture-based techniques were applied to analyze the diversity of indigenous microbial communities in the Qinghai middle salinity petroleum reservoir (QH-MSPR).
The results of TLC and FTIR spectrum of the purified bio-surfactant indicate that its chemical structure is identical to that of lipopeptide, whose hydrophobic end is composed of an ester group and aliphatic chain.
Lipopeptide is one of chemical structures such as glycolipid that are widely found in previous studies of bio-surfactants[7,12].
SPE106048. 2007 SPE international symposium on oilfield chemistry held in Houston, Texas, U.S.A., Feb.28-March 2, 2007

More precisely, the B coefficient is related to the effect of the solvated ion size, the orientation of the solvent molecules and the change in solvent structure, on viscosity [1].
The negative B coefficient value indicates that, although it is possible that, due to its size and shape, the BO2 ion slightly alters the solvent's viscosity and influences the orientation of the polar water molecules of the solvent due to polarization effect, it has a stronger tendency to disorder the solvent's structure.
[3] J.A Dean: Lange's Handbook of Chemistry (McGraw Hill, USA, 1999)
[10] CRC Handbook of Chemistry and Physics (CRC Press, USA, 2004-5)