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Due to the amorphous multi-layered structure and the large number of defected structure, AC-based solid acid bears more acid groups than the MWCNTs-based catalyst. which hence showing higher activity for the catalytic hydrolysis of cellulose.
Environment-friendly solid acid catalyst instead of liquid acid is a general trend in the current advocacy of green chemistry and sustainable development background [3].
Activated carbon having a multi-layered structure of amorphous, there are a lot of defects in the edge, which makes the surface of the activation energy high, it is prone to oxidation.
Graphitized carbon nanotube is structured, its cylinder is six-ring, both ends of five-ring is high activity, but it is difficult of chemical inert to load functional groups.

The structure and chemical composition of the specimens were systematically investigated.
Varying background Ar pressure strongly affected the product structure showing little effect on the chemical composition.
However, its deposition temperature of 300~450 � is relatively higher[1,2], which impedes multilayer structure required for devices due to interdiffusion and also interesting application such as the deposition of flexible polymer substrate[4].
In contrast, Ar pressure has little effect on the product chemistry and however, it plays a major role in the nanostructure formation.
It is worthy to note that this approach allow the band gap structure of a-GaN material to intrinsically be modified.

Kinetic compensation effect of kinetic parameters of thermal explosion test Ying-Hui Shao1, Zi-Ru Liu1,2, Xiao-Ning Ren1,2, Shu-Yun Heng1,2, Pu Yue1, Xi-Ning Xu1 address: 1 Xi’an modern Chemistry Research Institute 2 Nation Key Laboratory of Science and Technology on Combustion and Explosion, Xi’an 710065, P.R.
China email: yhshao166@sina.com Key words: physical chemistry; thermal explosion test; energetic materials; kinetic parameter; kinetic compensation effect Abstract: The kinetic parameters of thermal explosion tests with five-second delay for 273 energetic materials were analyzed.
The kinetic compensation effect appears in six types of TNT isomer under different reaction environmental pressures and structures [7].

The 3D ordered Si MCP electrodes were first fabricated by electrochemical etching and then Nickel nanoparticles were deposited onto the sidewall of the MCP via electroless deposition followed by annealing at 300°C for 300 s under argon to stabilize the structure.
So it is of practical importance to introduce new electrode with combine both the characteristics component and structure.
Finally, the as-prepared Ni/Si-MCP electrode was rapid thermal annealed for 300 s at 300°C under argon to obtain nickel silicide layers to stabilize the structure.
Fig .2 Corresponding EDS image of the structure in Fig. 1(d) B.
[12] Sami Ben Aoun, Zekerya Dursun, Tesshu Koga, Gyeong Sook Bang,Tadashi Sotomura, Isao Taniguchi, “Effect of metal ad-layers on Au(111) electrodes on electrocatalytic oxidation of glucose in an alkaline solution,” Journal of Electroanalytical Chemistry , vol.567, pp. 175–183, 2004

Phase purity and crystal structure of the phosphors were characterized using X-ray diffraction spectrometer.
The crystal structure of the obtained products were detected by X-ray diffraction (XRD, MERCURY CCD, Japan) using Cukα (l = 0.15406 nm) radiation in a step-scan mode (0.03° 2q per step) in the 2q range 4°-80°.
Results and discussion The structures of the prepared samples were verified via the XRD analysis and the patterns of the samples were shown in Fig.1.
All the peaks can be indexed to Sr2MgSi2O7 phase according to JCPDs card 75-1736, which indicates that single-phase phosphor was obtained, and the doped Eu2+ did not change the host crystal structure.
In Sr2MgSi2O7 crystal structure, the coordination number of Sr can be 6 and 8[11].

Surface modification of nano-Al2O3 with stearic acid Minhong Xu1,a*, Jianli Ma1,b , Mengxia Qian1,c and Lihua Jiang1,d 1 Department of Materials Chemistry, Huzhou University, Huzhou, Zhejing, China axumh123@163.com, b472679169@qq.com, c2430748053@qq.com, d354042209@qq.com Keywords: Surface modification, nano-Al2O3, stearic acid, dry method Abstract.
The structures of nano-Al2O3 before and after modified were characterized by IR.
The structures of nano-Al2O3 before and after modified were characterized by IR.
In addition, nano-Al2O3 had no C-H structure, so there was no obvious stretching vibration absorption peaks at 2916 and 2848 cm–1, as shown in spectra (c).
Moreover, the long chain structure of stearic acid would block the reaction between stearic acid and Al2O3.

The Fatigue Research of Straight Thread Sleeve Connection for Beijing South Railway Station Yueping Chen1,a Yuanqing Wang 2,b Xinyue Zhao 2,c Yongjiu Shi 2,d Hui Zhou2,e Yunsheng Li 3,f 1China Railway Construction group co.ltd, Beijing 100131,China 2 Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing 100084, China 3 ShiJiazhuang Railway University, ShiJiazhuang 050043,China ayp13573@126.com, bwang-yq@tsinghua.edu.cn, czyrf2006@yahoo.com.cn, dshiyj@tsinghua.edu.cn, eh-zhou08@mails.tsinghua.edu.cn, fliysh70@163.com Keyword: Beijing South Railway Station, straight thread sleeve connection, fatigue test Abstract: As for Beijing South Railway Station, railway track just lies on the roof slab of the basement, in railroad bridge or the railroad station orbit layer structure, the reinforcing bar designs general is used thick diameter reinforcing bar.However weld can’t assure the quality
Beijing South Railway Station appears oval，the main structure is used steel ,contain station and penthouse.
These test samples in addition to sending to Tsinghua University Engineering Examination Structure Centre, others are sent to National Steel Material Test Centre, Railroad Science Institute of Metal and Chemistry for research, and the results are all coincident to requirements.
References [1] Tsinghua University Engineering Examination Structure Centre:The report about fatigue test of steel joint for Beijing South Railway Station reconstruction subject .2006,1 In Chinese [2] Zhang Guangping: On Straight Thread Splicing of Steel Bar Joints w ith L ive Load.
STEEL ROLLIN.2001,(2):24-25 In Chinese [4] China constructs science institute for research structure.Fatigue research for reinforcing extrusion connection with rib.Construction Technology,1994,4: 6-8 In Chinese

Although MHs and MOs had the same macro- and micro-structure, they had different surface charges.
We employed a porous structure in this study to facilitate evaluation of osteoconduction.
The surface structure of the titanium implant was characterized by scanning electron microscopy (SEM) (S-4700, Hitachi Ltd., Japan).
Relative contributions of chemistry and topography to the osseointegration of hydroxyapatite coating.
Novel hydroxyapatite ceramics with an interconnective porous structure exhibit superior osteoconduction in vivo.

The key to OSC of CeO2 is due to reversibly accept or contribute Oxygen to its surrounding in the stable fluorite structure, which allowed the release and transport of O2 ions, Wang et al. [2].
A single broad band appears around 470 cm-1 in CZ samples can be attributed to the F2g mode of the cubic fluorite structure and the intensity of the band increased with CeO2 content.
The appearance of the said band is due to the presence of an oxygen concentration, which perturbed the local M-O bond chemistry leading to the relaxation of symmetry selection rules.
The maximum OSC value was obtained for Ce0.6Zr0.4O2, where the structure was in cubic fluorite and the details are given in Table 1.
It is in good agreement with the statement that cubic structures were favor for good OSC.

It possesses a 2:1 layered structure with an octahedral alumina layer located between two silicon tetrahedral layers.
The retention of peaks at 3633, 3440, 1038, 910, and 521 cm-1 in S-H-OMMT indicates that clay intercalation and siloxane grafting did not alter the inherent clay structure.
The structure of MMTs can be analyzed using WAXRD analysis, and the layer spacing can be calculated using the Bragg equation [11-13].
Materials and Structures.
Frontiers of Chemistry in China.