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Wang1,a 1Department of Physics, Wuhan University, Wuhan, China 2Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, China asjwangh@yahoo.com.cn Keywords: Positron annihilation; polypropylenes; gamma irradiation; crystallinity Abstract.
Positron annihilation technique is known as a powerful tool for examining the hole structure of functional materials at a molecular level.
Thus, the variation of I3 may be mainly influenced by the free volume concentrations and chemical structures.

Chemical structures of these antibiotics and their properties are shown in fig. 1 and table 1.
Chemical structures of a) gentamicin; b) fosfomycin; c) vancomycin.
Suwanprateeb,: in Pure and Applied Chemistry International Conference, Bangkok, Thailand (2011)

The nanotube samples were then heat-treated at 450˚C/3h to crystallize the amorphous TiO2 nanotubes into the anatase structure.
There was still intact tubular structure and the diameters were same as the pure TiO2 nanotubes(fig. 2 (a)) when the concentration was 0.01mol/L as showed in fig. 2 (b); As to the condition of 0.1mol/L(fig. 2 (c)), Lost of Fe3O4 nanoparticles can be seen well-distributed on the edge of the nanotubes; When the concentration increased to 0.3mol/L, more Fe3O4 nanoparticles presented and completely covered the surface of TiO2 nanotubes, so it was hardly to find the trace of the tube in fig. 2(d).
Journal of Photochemistry and Photobiology A: Chemistry.

Selection of new ceramic materials must meet to a few of basic requirements, such as low thermal conductivity, high thermal expansion coefficient, excellent phase stability at high temperature, high melting point, better chemistry inertness and bonding strength between coating and substrate [2].
Analysis model The distribution of coating residual stresses was analyzed by finite element code ANSYS (revision 10.0), and the thermal-structure PLAN13 was selected.
Hetmanczky, et al, Characterisation of the micro-structure and thermal properties of Nd2Zr2O7 and Nd2Zr2O7/YSZ thermal barrier coatings, J.

Influence of calcinations temperature on crystallization and synthesis process of Li4Ti5O12 Yijie Gu1, a, Zhen Guo1, Hongquan Liu1, Henghui Zhou2, Yong Hu1, Zuwang Hu1 1College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266510, China 2 College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 aguyijiezhang@163.com Keywords: Li4Ti5O12, calcinations, solid-state reaction, electrochemical property Abstract.
Lithium titanate has a spinel-type structure which can allow the reversible lithium insertion at room temperature via the reaction as follows: Li4Ti5O12 +3Li++3e- ↔Li7Ti5O12 [1].
It has reported that the location of the lithium-ions at tetrahedral (8a) sites or octahedral (16c) sites reflects upon the XRD intensities in the structure especially for the (311) and (400) line [9].

.: button-like structures on outer walls as well as virtually round channel structure of supermacropores [5].
Physics and chemistry of carbon materials 170-172. (2010) [5] Z.R.Ismagilov, N.V.Shikina, I.P.Andrievskaya, N.A.Rudina, Z.A.Mansurov, M.M.Burkitbaev, M.A.Biisenbaev, A.A.Kurmanbekov.

Bake hardening effect is an important mechanical behavior of steels used in vehicle structures and is wide used in the automotive industry.
Former studies pointed that the BH behavior can be affected by the chemistry and processing conditions of the steel [4-5].
It is believed that grain size and morphology of ferrite and martensite affect the mechanical properties of dual phase steel; these complex structures give the steel excellent combination of strength and ductility.

Oxygen Reduction Electrode Properties of Perovskite-related Oxides Sr(Fe,Co,Ru)O3-� at Low Temperatures Takeshi Chuma 1, Haruhiko Toda 1, Morihiro Saito1, Jun Kuwano1 and Hidenobu Shiroishi2 1Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 12-1 Ichigayafunagawara, Shinjuku, Tokyo 162-0826, JAPAN 2Department of Chemical Science and Engineering, Tokyo National College of Technology, 1220-2, Kunugida, Hachioji, Tokyo 193-0997, JAPAN Keywords: Perovskite-related oxide, Oxygen reduction, Electrode properties, Oxide ion, Solid electrolyte ABSTRACT The O2-gas electrode (OGE) properties of the perovskite-related oxides SrFe1-x-yCoyRuxO3 (SFCR) were examined with the solid-state cells of the type (SFCR | Ba0.975Ce0.8Gd0.2O3 | SFCR) below 300°C.
The high-temperature form h-SC is dimorphice with the low-temperature form, l-SC, with an oxygen-defect structure related to the hexagonal 2H-perovskite(BaNiO3-type)-related structure [5].

Mechanism of Apatite Formation on Anodically Oxidized Titanium Metal in Simulated Body Fluid Hyun-Min Kim,1 Hideki Kaneko, 2 Masakazu Kawashita 2 Tadashi Kokubo, 3 and Takashi Nakamura 4 1 Department of Ceramic Engineering, School of Advanced Materials Engineering, Yonsei University 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749, Korea (hmkim@yonsei.ac.kr) 2 Department of Material Chemistry, Graduate School of Engineering, Kyoto University Yoshida, Sakyo-ku, Kyoto 606-8501, Japan 3 Research Institute of Science and Technology, Chubu University 1200 Matsumoto-cho, Kasugai-shi, Aichi 487-8501, Japan 4 Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University Shogoin, Sakyo-ku, Kyoto 606-8507, Japan Keywords: Titanium, anodic oxidation, titania, bioactivity, apatite, SBF, TEM-EDX Abstract.
The surface composition and structure of the AO metal were surveyed as a function of soaking time in the simulated body fluid (SBF) using X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) attached with energy dispersive X-ray spectrometry (EDX).
The surface of AO titanium metal was shown above being composed of nano-crystalline anatase and rutile, which on immersion in SBF forms a thin amorphous calcium titanate within 0.5 h, thereon an amorphous calcium phosphate with a low Ca/P ratio within 24 h, and eventually the crystalline apatite with bonelike composition and structure within 72 h.

Rheology, Morphology and Mechanical Properties of PA6/PP-g-MAH/POE Blends Ming-tao RUN, Meng YAO, Bing-tao XING, Wen ZHOU College of Chemistry & Environmental Science, Hebei University, Baoding 071002, China Lhbx@hbu.cn Key words: nylon 6; PP-g-MAH; POE; rheology; mechanical property Abstracts: The rheology, morphology and mechanical properties of the PA6/PP-g-MAH/POE blends prepared by twin-screw extruder were studied by rheometer, scanning electron microscopy, universal tester and impact tester, respectively.
PA6 is a material with obdurability, so as we can see from Fig.1(a), the section presents an irregular structure and typical phase structure of homopolymer continuous phase, indicating it is toughness.