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The electronic band structures show the metallic character for both the compounds.
Jayaram, M K Miller, An atom probe study of grain boundary and matrix chemistry in micro alloyed, Acta Metall.
[12] Lars-Erik Edshammar, The crystal structures of Os2Al3 and OsAl2, Acta Chemica Scandinavica 19 (1965) 871-874
Jha, Stable structure of platinum carbides: A first principles investigation on the structure, elastic, electronic and phonon properties, Mat.
Pettifor, Theoretical predictions of structure and related properties of intermetallics, Mater Sci.

Preparation of a Thermo-sensitive Poly(N-acryloyl Alanine Methyl Ester) for Controlled Drug Release Kuilin Deng1*, Haibin Zhong1, Yu’e Shi1, Jian Zuo1, Chunyan Jiang1, Na Li1, Xiaojing Ji1, Pengfei Zhang1 and Xiaobo Ren1 1College of Chemistry & Environmental Science, Hebei University, Baoding 071002, China Tel: +86-0312-5971137; Fax: +86-0312-5079525; *E-mail: dkl369@hbu.edu.cn Keywords: Thermo-sensitive,　N-acryloyl alanine methyl ester,　LCST,　Drug release Abstract.
The structures of the corresponding monomer and polymer have been confirmed by 1H NMR and FTIR measurements.
The above-mentioned spectral data is consistent with the structure of the titled polymer, PAAME.
Below the LCST, the polymer chain formed expanded structures, while above the LCST it became a shrunken structure.

High purity AL2O3-MgO carbon-free refractories for ladle lining were investigated, this paper compared with the properties of bricks with different bond system and different production process, and study the wear mechanism, the TOC and hydrogen content change; analyzing the microstructure of residual bricks and the impact of refractories on quality of molten steel; Conclusions：The two kinds of bricks have different wear mechanism, the bricks bonded by a-bond was damaged mainly by penetration and erosion while the bricks bonded by resin was damaged by structure spalling and they have different effect on cleanness of molten stee Introduction In the ladle serving process, ladle refractories were susceptible to molten steel and slag erosion so that the low-melting phases of refractory got into molten steel to form inclusions, and the materials after thermal shock spalling into the molten steel would also form solid inclusions.
Tab.1 Chemistry and properties of the samples A.P. % B.D.
According to the phenomenon that corundum aggregate of the reaction layer was completely eroded, the reaction was enduring and complete so that it could actually postpone erosion process of molten slag, namely the sample A had strong resistance to slag corrosion; the long strip CA6 of the penetration layer interweaved to form network skeleton so that the matrix organizational structure became more dense, and the gehlenite filled in the gap between the CA6, therefore sample A had good spalling resistance and thermal shock resistance.
Sample B had only 2.5mm thickness of reaction layer and penetration layer (together named damaged layer), the contents of CaO and SiO2 penetrated into the zones were far lower than that of sample A. a series of reaction processes concerned alumina such as from Al2O3 into CA6, then gradually transformed into CA2 or C12A7 were all expansion processes (see Figure6), because of thermal expansion coefficients of sintered layer and the main body material did not mismatch, the crack gradually forms on the interface of the damaged layer and the original brick (see Figure 5), it was easily to cause the structure spalling and finally form alumina-rich solid inclusions into the molten steel..
The alumina-magnesite ladle material produced by casting molding was damaged mainly by penetration and erosion of molten slag, and the reaction products of calcium-aluminate slag melted into the molten steel;the material produced by compressing moulding was damaged mainly by structure spalling, the reaction products with high melting point phase could spalling into molten steel forming inclusions.

Their structures were identified as: pseudotaraxasterol (1), lupeol (2), ursolic acid (3), 2α, 3b-dihydroxylursolic acid (4), 2α,3b- dihydroxyloleanolic acid (5).
Every compound obtained was subjected to detail spectroscopic analysis to establish their chemical structures.
The structures of these known compounds were identified by direct comparison of their spectral data (1H-NMR and 13C-NMR and DEPT) with those reported values in the corresponding literatures.
The structures of isolated compounds are shown in Fig 1.
Vol. 31, (2008), p. 988 [9] Linxia Zhu, Guogang Zhang: Chinese Journal of Medicinal Chemistry [in Chinese].

Because its the unique functions, It plays an important role in food, alcoholic drink, tobacco, petroleum chemical industry, environment monitoring, chemistry and other areas [1-2], and at the same time, close contact and penetration to other industries which makes it more and more attention.
The choice of the sampling resistance R0 is the difficulty of circuit design, too big or too small all can cause the voltage gradient of the sensor output changing too small, then affects the accuracy of the gas identification and the quantitative inspection, the following principles must be met: Fig. 1 Structure diagram of hardware system of gas detection The resistance changing interval within the sensitive scope is [Rmin, Rmax] of the test gas mixture in theory, the following two conditions must be met simultaneously: (1) (2) Where Rmin is the gas sensor resistance when the concentration of the gas mixture is the maximum; Rmax is the gas sensor resistance when the single concentration of the test gas mixture is the minimum; Vc is the test circuit voltage; Vri (i=1, 2) is the modifier values of the test circuit voltage; R0 is the test sampling resistance.
Here making the two levels of neural network as an example to explain the system structure as in Fig. 2: Fig.2 Double neural network model The first level neural network is only responsible for the type recognition of the original gas, supposing that output variable encoding mode 0 represents that does not exist the gas, mode 1 represents that exists the gas, so through this level network, the output of the network contains only the model information of the type of gas.

Study of Deformation and Breakage Characters in Coal Seam Floor under the Condition of Mining WANG Zhong Chang Key laboratory for prediction & control on complicated structure system of liaoning province Dalian University, 116622, China wazoch@163.com Key words: Water bursting, crack propagation, floor combination, water-holding capacity Abstract.
The issues of the water-holding capacity of the floor of mine involve hydrogeology, chemistry, fracture mechanics, solid-fluid coupling.
Tab. 1 Mechanical parameters of each rock layer rock character the thickness of layer /m elastic modulus /Gpa Poisson’s ratio density t/m3 cohension /Mpa angle of internal friction /0 the compressive strength /Mpa the tension strength /Mpa number of rock character limestone 70 14 0.24 2.76 4 38 30 1.79 1 arenaceous shale 14.8 2.2 0.23 2.57 2.9 36 11 0.7 2 kern stone 13.2 6.2 0.15 2.65 4 39 15 0.98 3 fine sandstone 12.6 7.5 0.13 2.65 5 42 22 1.1 4 weak interlayer 0.7 0.7 0.34 2.35 0.6 32 3.5 0.1 5 mudstone 12.4 2.8 0.23 2.60 3 24 10 0.7 6 coal 2.7 1.2 0.36 1.40 1 25 3.2 0.03 7 mudstone 3.5 2.7 0.24 2.60 2.9 25 9.8 0.65 8 The multi-cracks failure under the mining and geological structure condition and lead to the run-through of cracks each other.

China 3 Department of Chemistry, Harbin Institute of Technology, Harbin, 150001, P.
As a type of ultra high strength steel, 22MnB5 steel has received increasing attention and become a potential structural material in high performance and reliability manufacturing in response to the requirements for weight reduction of structures [3].
The object of this work is to study the corrosion resistance property and corrosion mechanism of 22MnB5 steel, which will benefit for improving the reliability of 22MnB5 steel structures and make 22MnB5 steel used in more industry fields.

The structure and dimensions of the substrate and the cover sheet were given in Fig.1.
Fig. 1 The structure and dimensions of the cross-channel microfluidics chip A) . the substrate (0.8mm in thickness) B).the cover sheet(0.6mm in thickness) Equipment of microfluidic chip in injection moulding.
[4]Becker H, Gärtner C: Analytical and Bioanalytical Chemistry, 2008,390(1):89-111

Synthesis, Photochromic Properties of 1-(2-methyl-5-chlorine-3-thienyl)-2-(2-cyanophenyl) perfluorocyclopentene Shasha Wei, Fengxia Sun and Gang Liu* Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P.
As a current research goal for photochromic diarylethenes is to develop novel structures and unique properties, one traditional method is to modify the structure of photochromic dithienylethenes by functionalizing the group.

Study on Material Properties with Synthesis and Properties of a Photochromic Diarylethene with Acetal Unit Shasha Wei, Renjie Wang and Gang Liu* Jiangxi Key Lab of Organic Chemistry Jiangxi Science & Technology Normal University, Nanchang, China liugang0926@163.com Keywords: diarylethene; acetal unit; photochromism; fluorescence Abstract.
Among wide variety of synthetic photochromic molecules, those having hexatriene-cyclohexadiene type structure such as diarylethenes and terarylenes have been extensively studied due to their thermal stability in both colored and bleached states and relatively high photochromic reactivity in solutions and even in solid states [5-8].
The structures of diarylethenes 1o were confirmed by 1H NMR. 1H NMR (400 MHz, CDCl3, TMS): δ 1.93 (s, 3H, –CH3), 2.46 (s, 3H, –CH3), 4.10 (m, 4H), 6.01 (s, 1H,), 7.23 (s, 1H, thienyl–H), 7.14(d, 1H, phenyl–H), 7.27(d, 1H, phenyl–H), 7.62(m, 2H, phenyl–H).