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In many data mining process and methods will be used in the cluster analysis techniques such as data mining related process data pre-processing step, the characteristics of different data , simple data structures or those with only a single traffic analysis properties or fewer properties associated data can be integrated directly after the data into the data warehouse cleanup pretreatment , and for some complex multidimensional data structures can be analyzed using the method of clustering will construct a logical library after its data gathering , the complex standardization of data structures for a number of data mining methods ( e.g. association mining , rough set method, classification, etc. ) to provide pretreatment.
Currently in the vast field of archeology, chemistry, medicine, astronomy, psychology, education, sociology and criminology and others have a very successful application of cluster analysis.

The glass has many premium properties in physics and chemistry, including stand fire, corrosion-resistant, thermal stability, good transmission of light and excellent electrical insulation.
According to the micromachining techniques, metal ground shield, thick metal traces, thick oxide and suspended coil spiral over silicon trench, and out of plane coil structure has been used to reduce the parasitic effect.
Jumril Yunas·Azrul Azlan Hamzah·Burhanuddin Yeop Majlis[2]designed a microtransformer, which has a planar coil structure consisting of two separated square interwinding coil conductors.
Resistive Coupling Efficiency Criterion for Evaluating Substrate Shielding Structures of Transformers.

Sedimentation of atoms in condensed matter has been realized and the atomic-scale phase change and the graded structure were reported by Mashimo.
Crystal structure of RbCl is B1 type (NaCl type) at ambient condition, while at high pressure, the structure is changed to B2 type (CsCl type) from B1 type (NaCl type).
Kawamura: Japan Chemistry Program Exchange.

Structure and morphology analysis Fig.3 shows the XRD pattern of the samples a1 and a2, but there is no obvious diffraction peak of carbon, which means the carbon compound is amorphous.
All diffraction peaks can be indexed to the ordered orthorhombic olivine crystal structure (space group: Pnma, PDF: 081-1173) with no impurity phase.
In addition, the SEM image Fig.4 shows an agglomerate structure.
Michael Graetzel, Chemistry of Materials19:4716-4721 (2007)

Electrocatalytic Activities of Trirutiles Based on MTaO6 (M=Co, �i, Mg) for Oxygen Reduction Reaction Takayuki KONISHI 1, Hideki KAWAI 1, Morihiro SAITO 1, Jun KUWANO 1, and Hidenobu SHIROISHI 2 1.Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 1 12-1 Ichigayafunagawara, Shinjuku, Tokyo 162-0826, JAPAN 2.Department of Chemical Science and Engineering, Tokyo National College of Technology, 2 1220-2, Kunigida, Hachioji city, Tokyo 193-0997, JAPAN Keywords: electrocatalyst, trirutile, oxygen, MTa2O6, RRDE, ORR ABSTRACT The trirutile oxides MTa2O6 (M=Co,Ni,Mg) [MTs] and the substitution products M1-xNxTa2-yLyO6 (N=Mn, L=Sn,Ti,Zr) [M1-xNxTa2-yLy] were prepared by a conventional solid-state reaction.
The trirutiles have the general formula AB2O6, and the ideal tetragonal structure with the space group P42/mnm is considered as a triple-layered structure of the rutile-type structure along the c-axis.

Photochromism, Kinetics and Fluorescence of 1-(2-methyl-3-benzofuranyl)-2-[2-methyl-5-(4-cyanophenyl)-3-thienyl] perfluorocyclopentene Dandan Xue, Zhiyuan Sun and Shouzhi Pu* Jiangxi Key Lab of Organic Chemistry, Jiangxi Science & Technology Normal University, Nanchang 330013, China pushouzhi@tsinghua.org.cn Keywords: Photochromism; Diarylethene; Kinetics; Fluorescence.
Introduction Photochromism is a reversible transformation induced by photoirradiation between two forms with different chemical structures [1].
The different chemical structures may cause changes of various physicochemical properties, such as absorption, emission and redox potential.
The structure of compound 1o was confirmed by 1H NMR. 1H NMR (400 MHz, CDCl3): δ 1.91 (s, 3H, –CH3), 2.14 (s, 3H, –CH3), 7.22–7.29 (m, 2H, benzofuran–H), 7.26 (d, 1H benzene–H, thiophene–H), 7.44 (t, 3H, benzofuran–H, thiophene–H), 7.61 (d, 2H, J = 8.0 Hz, benzene–H), 7.67 (d, 2H, J = 8.0 Hz, benzene–H).

The anodic oxidation changes the surface structure of Ti foils from amorphous to anatase under certain parameter.
A weak acid is able to form a thin anatase structure under low voltage.
The anodic oxidation is able to change the surface structure of Ti foil from amorphous to anatase by using acetic acid as electrolyte under various parameters.
Michler, Electrolytic deposition of titania films as interference coatings on biomedical implants: microstructure, chemistry and nano-mechanical properties, Thin Solid Films, 494 (2006) 279 – 286

Preparation of Nanoparticulate ErFeO3 by Microwave Assisted Process and Its Photocatalytic Activity Chaowan Tang, Jiani Ying, Dongjing Ni, Qian Yang, Limei Wu, Peisong Tang* Department of Materials Chemistry, Huzhou University, Huzhou 313000, P.
The ErFeO3 was a kind of typical rare-earth perovskite-type oxides, with its unique structure and magnetic properties[5].
However, the diffraction peaks of ErFeO3 after calcination at 800 ℃, 900 ℃ and 1000 ℃ match well with the standard sample of perovskite structure ErFeO3 (JCPDS: 47-0072), without other impurity phase peaks.
From Fig.2, It indicates that the perovskite structure ErFeO3 was successfully synthesized by successive microwave processing and the high temperatures calcination (≥ 800 ℃).

Heat Loss Measurement and Analyses of Solar Parabolic Trough Receiver Jianfeng Lu1, Jing Ding1, a, Jianping Yang2 and Kang Wang1 1School of Engineering Sun Yat-Sen University, Guangzhou 510006, Guangdong, China 2School of Chemistry and Chemical Engineering South China University of Technology, 510640, Guangdong, China aemail: lujfeng@mail.sysu.edu.cn Keywords: solar parabolic trough system; vacuum receiver; heat loss; wind Abstract.
The heat transfer performance of parabolic trough solar receiver is mainly affected by kinds of factor as receiver structure and absorber coating.
glass tube boundary TS Tg Tw Tf (a) Experimental system (b) Receiver structure Fig. 1 Parabolic trough collect and vacuum solar receiver Table 1 Parameters of solar parabolic trough collector Structure Value Receiver length (L) 10.2 m Boundary length (Lb) 0.2 m Glass length (Lg) 10.0 m Collector width (W) 4.0 m Focal distance (Lf) 2.20 m Glass diameter (Dg) 0.120 m Absorber tube diameter (Dt) 0.070 m Absorber coating emissivity (εt) 0.20 Glass emissivity (εg) 0.92 The temperature of surrounding Ts, glass Tg, tube wall Tw and heat conducting oil Tf were directly measured by thermocouples with error 0.1 K.

Additional, it is enable to combine with the interdigitated structure.
It can be observed that the sputtered Ti film without vacuum annealing process demonstrate the columnar structure.
Generally, preparation metal thin film via sputtering process will occur the columnar structure [4] due to high mobility of sputtered atom on substrate surface.
New Journal of Chemistry, 32(12), 2164