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Previous experience has shown that concrete structures are likely to have a good fire rating than structures made of other materials.
Introduction Concrete has been widely used as a construction material in buildings and other industrial structures.
J, Physics and chemistry of photo catalytic Titanium-di-oxide, Current Science, Vol. 90, p. 10
Lea, The Chemistry of Cement and Concrete, (Edward Arnold Publishers), London, p. 75-76
[10] Li Heii, Xiao Heii-gang, Micro Structure of Cement Mortar with Nano Particles, Compos part B Eng, Vol. 35 (2004), p. 185-9

The influence of the external plasma process parameters on the surface chemistry of fresh and aged films is systematically investigated.
Changes of the film chemistry vs. storage time are highly relevant for applications in technology.
SSIMS is a rather surface sensitive method utilizing a correlation between surface structure and fragmentation pattern observed in secondary ion mass spectra.
[4] Chemical Applications of Synchrotron Radiation, Advanced Series in Physical Chemistry Vol. 12, (World Scientific, Singapore, 2002)
Sci.: Part A: Polymer Chemistry, Vol. 37 (1999), p. 2191.

Based on the comprehensive summary of latest research achievements of Laser and EDM technologies in home and abroad, the other advanced machining technologies is summarized briefly, such as Ultrasonic Wave, Microwave machining techniques and their composite machining technologies, as well as High-speed (Super High-speed) Grinding, ELID Grinding and Interface Thermal Chemistry Reaction Aided Machining technologies developed on the basis of traditional grinding technology.
These high density energy beams are applied to the local surface of the engineering ceramics during machining to reduce the machining cost of engineering ceramics and improve machining efficiency or surface integrity through changing its organizational structure and deformation property or reducing its hardness and strength.
In addition, high speed (super high speed) grinding, ELID grinding and interface thermal chemistry reaction aided machining of engineering ceramics developed on the basis of traditional grinding machining technology have also acquired a few beneficial effects.
This method only adapts to the cases difficult to realize with tool cutting such as micro-drilling, micro-cutting and micro-structure fabrication, so the people pay more attention to the laser heating assisted machining.
Interface Thermal Chemistry Reaction Aided Machining.

Structural Chemistry of Alkaline Earth Aluminate Phosphors K.
In the former structure, all of the tetrahedral rings are equivalent.
The monoclinic structure [4] is well known to be stuffed tridymite derivative.
Methodology Crystal-structure determination from X-ray powder diffraction data.
Figure 1(a) shows a crystal structure of SrAl2O4 at 1073 K [7].

China. 2School of Chemistry and Chemical Engineering; Huainan Normal University; Huainan, Anhui 232001, P.
The surface structures, morphologies and electrocatalytic activities of the prepared nano-TiO2 film electrodes were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Cyclic voltammetry (CV).
The band widths of the peaks on Ti/0.5%La nano-TiO2 electrode surface have the broad and passive trend relative to Ti/nano-TiO2 electrode, which indicated that there was lattice distortion in TiO2 crystal structure.
Photoreactions on LaTiO2 N under visible light irradiation, Journal of Physical Chemistry A. 106 (2002) 6750-6753
Significant effect of lanthanide doping on the texture and properties of nanocrystalline mesoporous TiO2, Journal of Solid State Chemistry. 177 (2004) 3490-3498.

With steady physical chemistry performance, higher melting point, low loss in the waveband of 0.3~0.4, sapphire fiber is very attractive for temperature optical fiber sensing and near infrared energy delivery.
Sapphire optical fiber has fine physical chemistry performance.
Global design of measuring system According to temperature characteristic of fluorescence and combining with development trends of miniaturization, intellectualization, modularization and portable type, for temperature measuring instrument, the fluorescence optical fiber temperature measuring system with compact and highly efficient optic block and whole structure is designed.
The sapphire fiber has excellent physical chemistry performance.
The sapphire fluorescence optical fiber temperature sensing prober is made with compact structure, high thermal resistance and stable property.

Application of Neural Network in Bioactive Prediction of Inhibitor of Thymidylic Acid-Based Synthetase Xi-Hua DU1, a, Xiao-Hui WANG1,b 1School of Chemistry Engineering, Xuzhou Institute of Technology, Xuzhou, Jiangsu, 221111, China a dxh12@hotmail.com, b wxh2116@163.com Keywords: Thymidylic acid-based synthetase, Inhibitor, Biological activity, The electrical topology state index, Neural network, Quantitative structure -activity relationship.
In recent years, the quantitative structure-activity relationship QSAR method was widely used in pharmaceutical chemistry and toxicology research field[9-12], the results of the research work have also been fully recognized.
By quantum chemistry method, this paper studied the inhibitor of thymidylic acid-based synthetase as five-membered heterocyclic pyrimidine derivatives and their space, electronic structure, and toxicity mechanism of antitumor activity of these kinds of compounds were analyzed in theory, in order to obtain the activity parameters of drug molecular design of these kinds of compounds.
Methodology Molecular Structure of Thymidylic Acid-based Synthetase.
Molecular Structure of Inhibitors of Thymidylic Acid-Based Synthetase The Calculation of Electrical Topology Status Index Electrical topological index was presented by the Kier and Hall [17] and it is a kind of symbols could show the electronic structure of atoms and spatial topological properties of molecular structure descriptors.

Makogon[22] presented data to support his concept that decomposite hydrates do not totally decompose but leave a partial structure which enables hydrates to form readily with a second increase in temperature; Skovborg[23] formed hydrates in 5 of 27 attempts to define residual structure; he concluded that residual structure could be statistically verified; Lederhos[17] used a rolling ball sapphire tube viscometer to measure the residual structure after gas hydrate dissociation; Schroeter et al.[12] demonstrated the acceleration of the residual structure for gas hydrate formation.
We can confirm that the residual structure is destroyed due to the increased temperature.
A., "Quantifying hydrate formation and kinetic inhibition", Industrial & Engineering Chemistry Research, 37(8), 3124-3132(1998)
A., "Hydrate decomposition conditions in the system hydrogen sulfide-methane-propane", Industrial and Engineering Chemistry Fundamentals, 22(4), 361-364(1983)
[13] Takeya, S., Hori, A., Ondoh, H.T., Uchida,T., "Freezing-memory effect of water on nucleation of CO2 hydrate crystals", Journal of Physical Chemistry B,104, 4164-4168(2000)

., 41100 Modena Italy 2 Chemistry Department, University of Aarhus, 8000 Denmark 3 Chemistry Department, SUNY Stony Brook, Stony Brook, New York 11794-3400, USA 4 Chemistry Department, Brookhaven National laboratory, Upton New York 11973, USA Keywords: HFC-134/NaY, In Situ Study, Synchrotron Powder Diffraction, Rietveld Refinement.
Rietveld structure refinements were performed for the HFC-134 (32 molecules per unit cell [m/uc = molecules per unit cell] or 4 molecules per supercage [m/sc = molecules per supercage]) using data collected from 100 to 230 K.
The structure of the unloaded zeolite is fully described in [5].
In this piece of work we will describe only the results of the structure refinements for the experiment with the HFC-134 loaded with 32 molecules per unit cell where a spectacular change in the unit cell volume is observed with temperature.
Data were refined using the Rietveld method for a better understanding of the structure change with temperature.

It has superior properties in physics and chemistry, characteristic of fine particles, hollow structure, light weight, high temperature resistant, corrosion resistant, anti-radiation and chemical stability.
In addition, hollow microspheres is also promising materials for electromagnetic wave absorption, whose property(microstructure, size of structure, chemistry constitutes)directly influence the fluctuation of dielectric constant and magnetic conductivity, and control the quality of absorbing electromagnetic wave.
Experimental Results and Discussion Types and structure of hollow multiphase ceramic microspheres.
Figure 2(c) shows that the structure inside the spherical particles is hollow.
Chemistry of Materials. 16(2004) 3860-3866 [9] S.