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In a previous study, we have reported that sodium removal by dilute hydrochloric acid (HCl) converted the sodium titanate layer on the surface of an alkali-treated porous titanium into titania with a specific structure that has better bioactivity than sodium titanate.
Several methods to add bioactivity to porous metals have beeen reported.[2,3] However, it is difficult to produce bioactive properties on the entire inner pore surface of porous structures.
(Fig. 1) This microporous structure by HCl-AH treatment have possessed a more complex surface than by W-AH treatment [2].
The W-AH group showed small XRD peaks that were ascribed to sodium titanate and rutile structures.
We have shown previously that HCl-AH treated implants have better osteoinductivity in ectopic site of canines than W-AH treated implants because of the surface chemistry (titania formation and sodium removal) and surface topography changes.[7,9] Therefore it was expected that the surface characteristics of HCl-AH treated implants would be effective for osteoconduction.

The carbon micro-coils have a three-dimensional micro-helical structure which the diameters of the coils and fibers are usual in the range from 1 to 10μm and from 0.1 to 1μm, respectively.
Although CMC samples from different research group have different size and shape of coils and fibers, the as-grown CMCs have a amorphous micro-structure which is in common [2-4].
CMCs whose particular structure and properties is superior to that of straight carbon fibers can be used as reinforcers to improve strength and toughness of structural composite materials, and capacity and cycling life of mechanical or electrical energy-storage materials.
In this research, the thermal and electrical transportation properties of CMCs under the condition of common use were measured and discussed, which would also support the experimental testimonies or information for structure analysis [7,8].
Eser: Materials Chemistry and Physics Vol. 76 (2002), p.217 [4] S.

Series alkyl benzyl sulfonates with different structures were synthesized and evaluated by RIPED[9-10].
Oilfield Chemistry. 2001, Vol.18, No.4, p330-333 [6] Ren Minghong,Dong Ling.
J Oilfield Chemistry, 2000, Vol.17, No.1 [13] LI Gan-Zuo, SHEN Qiang, ZHENG Li-Qiang, MAO Hong-Zhi.
J Oilfield Chemistry, 1999, Vol.16, No.1 [14] ZHENG Da-feng, QIU Xue-qing, LOU Hong-ming.
The structure of lignin and its chemical modification.

INTRODUCTION Semiconductor nanoparticles have received much more attentions in the field of materials and chemistry recently.
Therefore it has been concluded that the synthesized CdSe nanoparticles are having face centered cubic structure [21-24].
The sharp and strong peak around 200cm-1 and 410cm-1 is assigned to the high frequency branch of the T2 mode, which is the strongest mode in the Zinc blende crystal structure.
Gonzalez-Hernandez, Growth technology X-ray and optical properties of CdSe thin film, Journal of Materials Chemistry and Physics. 113 (2009) 824–828
Sarkar, CdSe nanoparticles grown via radiolytic methods in aqueous solutions Radiation Physics and Chemistry. 80 (2011) 736–741

Surface area and pore structure 3.2.1.
There are mixtures of meso and micropores in the structure.
This is because the structure collapsed when it reaches high temperature activation.
Thus, it is very interesting to study the structure of the surface after activation.
Activated carbon from jackfruit peel waste by H3PO4 chemical activation: Pore structure and surface chemistry characterization.

Many previous studies showed that it was indeed feasible to predict the properties with quantitative structure-property relationship (QSPR) models for many organic compounds.
The advantage of this approach over other modeling methods is that only the knowledge of molecular structure is required.
Generally speaking, for the compounds with similar structure, the larger the molecular is, the stronger the intermolecular dispersion force.
Conclusion Quantitative structure and soot–water partition coefficients (logKSC) established for 25 investigated persistent organic pollutants has been established.
Acknowledgements This work was financially supported by State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (KF2011-19).

Introduction The C19-diterpenoid alkaloid have attracted considerable interest in phytochemistry and medicinal chemistry because of their complex structures and pharmacological effects [1-3].
In previous investigation, we have reported on a series of structure modifications of the C19-diterpenoid alkaloids [4-9], including some interesting skeletal rearrangements [10-12].
Comparison of the spectral data with 5 led to determine readily the structure of 6.
A comparison to the NMR spectra of 7 with those of 6 showed the absence of an acetoxy group but the presence of an additional conjugated double bond (δH 6.23, 1H, d, J = 4.6 Hz; 5.89, 1H, dd, J =8.4, 7.2 Hz; 5.49, 1H, t, J = 7.2 Hz; δC 124.8 d, 128.8 d, 130.3 d, 137.6 s), leading to establishment of the structure of 7.
References [1] Fengpeng Wang, Xiaotian Liang: The Alkaloids: Chemistry and Pharmacology Vol. 42 (1992), p. 151

Synthesis and Identification of A Hyperbranched Polymer of Tris(8-hydroxyquinoline) Aluminum Linked with Ethylene Glycol Song Bo1, Xiang Junhui1,a , Zhang Fushi2,b , Xing Li1, Liang Xiaohong1 and Chen Shiwei1 1 College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, Beijing 100049, China 2 Department of Chemistry, Tsinghua University, Beijing 100084, China a xiangjh@gucas.ac.cn; b zhangfs@mail.tsinghua.edu.cn Keywords: tris(8-hydroxyquinoline) aluminum, ethylene glycol, energy band-gap Abstract.
Wang et al. reported a hemicage 8-hydroxyquinoline chelates whose structure is facial and stable.
The cage structure leads directly to superior thermal and chemical stability and quantum efficiency enhancement [18].
The alkoxy structure is weakly electron-donating to the five-position of the quinolinolate ligand, which could make the Alq3's quinolines more stable and transport more electrons between two near Alq3 molecules.
These optical results of the polymer indicated that the operation, connecting Alq3 with ethylene glycol to form a three-dimensional cross-linked structure, could increase the energy band-gap but make the photos easier to transfer between the HOMO and LUMO energy levels.

Introduction At the turn of the millennium, Shirakawa, MacDiarmid, and Heeger shared a Nobel prize in chemistry awarded for their effort in the research field of conducting polymers [1-3] which resulted in a great deal of attention to this class of organic semiconductors.
The morphology of the PPPTh films was observed to be a globular structure under most conditions used.
This is suggestive of a decrease in sulfur content from the main structure of the films.
However, the fact that the aromatic C=C stretching around 1427 and 1370 cm-1 are still observed, reassures the existence of the aryl structure.
As mentioned earlier that in the plasma process numerous different fragments could be generated, therefore complex chemical structures of plasma-polymerized polythiophene are possible.

The SEM images show the typical porous structures of activated carbon fabricated from biomass.
The results of the study of surface functional groups in the structure of the best activated carbon materials are shown, many functional groups have been removed from the surface of materials, in which many functional groups have decreased significantly compared to with the original shell sample as C-H group at wavelengths of 2926.93 cm-1 and 2843.52 cm-1 [17, 18]; C-O group at wavelength of 1040.41 cm-1; group C + C at wavelength 1508,54 cm-1 and 1475 cm-1.
The results of research on surface functional groups in the material structure of modified activated carbon materials from activated carbon show that the functional group has changed significantly.
[10] Zang, Y.J., Xing, Z.J., Duan, Z.K., Li, M., and Wang, Y., Effects of steam on the structure and surface chemistry of activated carbon derive from bamboo waste, Applied Surface Science, 2014, 315, 279-286
[35] Jr, M.H., Spiff, A.I., Sorption of lead and zinc on sulfur-Containing chemically, Department of Pure & Industrial Chemistry, 2005, 2(3) 373-385