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This paper is focussed on the development of microstructure during liquid phase sintering and post-densification crystallisation heat treatment of ceramic materials based on the α- and β-Si3N4 structures.
The chemistry and the volume fraction of the liquid is determined by the choice of additives and the temperature / time programme during sintering.
This may be achieved through the formation of α- and β-sialons which are solid solutions based on the hexagonal α- and β-Si3N4 structures [12].
In addition, the ・- and β-sialon structures allow the development of self-reinforced, duplex, microstructures consisting of fibrous β'-Si3N4 grains in an ・'-Si3N4 matrix [13,14].
A complete crystallisation is, however, generally not obtained even if the chemistry of the starting powder mixture has been carefully designed.

Synthesis, Photoluminescence and Surface analysis of Bis(salicylicaldehyde-trimethylol amino methane)Zn(II) Xi-Shi Tai 1, a 1 College of Chemistry and Chemical Engineering, Weifang University, Weifang 261061, P.R.
Schiff bases and their metal complexes play a key role in understanding the coordination chemistry of transition metal ions [4].
The chemical structure of ZnL2 molecule is shown in Fig. 1.
Fig. 1 The chemical structure of the ZnL2 molecule.

Chitosan (Poly[-(1, 4)-2-amino-2-deoxy-D-glucopiranose]) has a structure as shown in fig.1.
Fig.1 Chemical structure of Chitosan Materials and Instruments Chitosan , sodium triphosphate (TPP), sodium hydroxide and acetic acid were purchased from Aladdin Chemistry Co., Ltd.
Polysaccharides: chitin and chitosan: chemistry and technology of their use as structural materials.

Materials and methods Film preparation and structure characterization Q235 carbon steel sample with a bare area of 10mm×20mm was first washed with acetone and distilled water and served as anode in PEO.
Large surface area results from the porous and loose surface structure is another contribution to the photocatalytic activity.
Photobiol., A: Chemistry, 148 (2002 )33-245 [5] Dongjin Byun, Yongki Jin, Bumjoon Kim, Joong Kee Lee, Dalkeun Park, Journal of Hazardous Materials, 73(2000) 199-206 [6] Nicholas T.
Materials Chemistry and Physics.129 (2011)242-248 [9] Danuta Krupa, Jacek Baszkiewicz, Joanna Zdunek, Jerzy Smolik, Zbigniew Słomka, Janusz W.

It was because the structure of flavonoids molecules had conjugate effect, the ability of flavonoids chelating iron ions was stronger than that of ascorbic acid.
Reducing power of flavonoids was weaker than that of ascorbic acid because the number of -OH in flavonoids structure is less than that in ascorbic acid.
The contribution of individual flavonoids to antioxidant capacity was generally dependent on their structure and content.
Food Chemistry.
Chen: Food Chemistry.

The molecular structure was analyzed by Fourier transform infrared spectrometer (FTIR, Nicolet 460) with KBr wafer method.
The structure and thermal behavior of PS particles.
Journal of Polymer Science, Part A: Polymer Chemistry, Vol.45(2007), p. 348～360
Journal of Polymer Science, Part A: Polymer Chemistry, Vol.37(1999), p. 2429～2437 [9] HANNA BAMNOLKER, SHLOMO MARGEL.
Journal of Polymer Science, Part A: Polymer Chemistry, Vol.34(1996), 34: p. 1857～1871

In order to simulate the structure of natrual bone, to control the nano-HA size of nano-HA/polymer composites and enhance the dispersion of nano-HAs in organic matrices becomes one of the keys to design a composite material for biomedical replant applications.
The macroscale exhibited a highly porous structure, consisting of well-developed and open-channeled micropores and interconnected framework.
Within the microporous structure, the nano-HAs were uniformly distributed on the surface of the micropores.
Akashi: Chemistry Letters 27 (1998), p. 711 [6] T.
Estroff: Organic and Biomolecular Chemistry 2 (2004), p. 137 [12] J.

Introduction Y-type hexagonal ferrite with planar magnetic structure have much higher initial permeability, higher factor of quality and higher cut-off frequency in very higher frequency (VHF) and ultra high frequency (UHF) regions (300 ~ 800 MHz) [1,2], which make these materials the ideal choice for preparing MLCI.
Y-type hexaferrite was investigated by X-ray diffraction, using Cu Kα radiation to characterize phase structure.
Yao: Materials Chemistry and Physics.
Zhou: Journal of Inorganic Chemistry.
Journal of Inorganic Chemistry.

Department of Chemistry and Material Science, Langfang Normal College, Langfang, Hebei, China 2.
College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei, China Email: jiaoxuechao129@163.com Keywords: self-assembled film; metal surface treatment; conditions Abstract.
Silane reagents structure is generally for Y-R-SiX3, X is hydrolysis group combined with the silicon atom, such as chlorine-based, methoxy, ethoxy, acetyl oxygen, etc.; Y is organic functional groups, such as amino, epoxy, etc.; R is a saturated or unsaturated bond carbon chain.
[5] S.R.Yang, S.L.Ren, J.Y.Zhang, X.S.Zhang, Structure and self-assembly mechanism of self-assembled monolayers, J.Chenical Journal Of Chinese Universities, 22(2001)470-476
[6] X.G.Yang, S.H.Chen, H.Y.Ma, Z.L.Quan, D.G.Li, Inhibitive self-assembled monolayer on metal surface, J.Progress in Chemistry, 15(2003)123-128

Modeling the heat of hydration of concrete incorporating fly ash Zhenggang Lu1,2,a *, Xiuxin Wang1,2,b 1School of Civil Engineering, Southeast University, Nanjing 210096, China; 2Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China aaustlzg-163@163.com, bwangdisks@163.com Keywords: Fly ash, Concrete, Heat of hydration, Water-binder ratio, Equivalent age, Adiabatic temperature rise Abstract.
Introduction The hydration exothermic behaviors of concrete have significant influence on the durability of concrete structures, which have drawn more and more attention in engineering practice.
A common measure controlling the temperature rise of concrete is replacement of the cement with the same percentage mineral admixtures such as fly ash, by which the cracking risk of concrete structures caused by thermal stresses will be obviously reduced[1-3].
Bogue, The chemistry of Portland cement, Soil Science. 79(1995) 322
Verbeck, Chemistry of hydration of Portland cement, Fourth International Symposium the Chemistry of Cement.