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Bullett [1] has investigated the electronic structure of WO3 in various phases and discussed its semiconducting properties.
In both the LCAO and FP-LAPW calculations, the room temperature monoclinic structure of WO3 with 32 atoms (8 W and 24 O) in the unit cell was considered.
Except some fine structures, the overall shape of energy bands and DOS are in tune with the available data [9].
Rodriguez, Transition metal oxide chemistry: Electronic structure study of WO3, ReO3, and NaWO3, J.
Burgees, The electronic structure of tungsten oxide thin films prepared by pulsed cathodic arc deposition and plasma-assisted pulsed magnetron sputtering, J.

These compounds, as is seen from Fig. 2, transform to CsCl structure on compression.
For a given pressure, a stable structure is one for which enthalpy has lowest value and the transition pressure (Pt) is determined at which the enthalpies of two structures are the same.
Szotek, Electronic structure of pu monochalcogenides and monopnictides, Euro.
Troc, R., Handbook on the physics and chemistry of actinides, Eds A.J.
Christensen, Structure phase stability of B2 and B32 intermettalic compounds, Phys.

MIR spectroscopy analysis is now being widely used in the field of structure and ingredients analysis[1], pathology research[2], clinical examination[3], Chinese herbal medicine fingerprint research[4], differentiation of Chinese herbal medicine[5], determination for soil quality[6], illicit drug inspection[7], the quality examination for packaging material[8] and so forth.
Chinese Journal of Analytical Chemistry, 2009, 37(10 suppliment): B075.
Chinese Journal of Analytical Chemistry, 2007, 35(1): 119 - 122.
Chinese Journal of Analytical Chemistry, 2009, 37(12): 1825 - 1828.
Chinese Journal of Analytical Chemistry, 2009, 37(10 suppliment): B185.

Wang 2,b 1 School of Mechanical Engineering，Shandong University，Jinan 250061 2 Chemistry and Biology College，Yantai University，Yantai 264005 a zyr_blue@163.com, bmeywang@sdu.edu.cn Keywords: Fault diagnosis, Control valve, High flow rate Abstract.
This paper presents results of a study on classification and mechanism of the common faults of control valves in connection with the structure of the valve applied to the circle-electricity industry.
So the structure of a control valve includes two parts: the assembly of valves and the actuator [ ].
Classification and mechanism of the common faults of control valves According to the structure, the faults of valves can be divided into tow kinds: the fault of the actuator and the fault of the assembly of valves.
Fig.1 Structures of the valve The valve shown in Fig.1 has two kinds of leak faults: external leak faults and internal leak faults.

The Study on the Synthesis and Luminescent Properties of the Phosphor La2O3: Dy3+ Weiwei Tang ,Wenyu Zhao, Bin Fan Inner Mongolia University of Science and Technology, Baotou014010,China fb8726@163.com Key Words: Photoluminescence; Cathodoluminescence; La2O3: Dy3+; phosphor Abstract: In this paper, the phosphor La2O3: Dy3+ was synthesized by a gel-sel method and its structure, morphology, particle size, Photoluminescence (PL) and Cathodoluminescence (CL) properties were characterized by X-Ray powder diffraction (XRD), scanning electron microscopy (SEM),laser particle size analyzer, Photoluminescence (PL) and Cathodoluminescence (CL) spectra, respectively.
Thus it can be seen that adulterating Dy3+ to replace La3+ and enter into the lattice of substrate has not yet produced great influence for the crystal structure of the substrate.
Structure of the sample still belongs to La2O3 hexagonal structure.
Morphology and particle-size analysis Scanning electron microscopy (SEM) and particle size distribution of the sample La2O3:0.05Dy were determined.It can be seen from Fig.2, the sample La2O3:0.05Dy is a kind of sphere-like structure basically and its diameter is approximately 1.0μm.
Journal of Solid State Chemistry,2007,180:1421-1430 [7] Baoling Wang, Liuzheng Sun, Haidong Ju,et al.

X-ray diffraction (XRD), nitrogen adsoption, scanning electric microscope (SEM) and cyclic voltammetry (CV) were used to investigate the phase composition, pore structure, morphology and electrochemical performance of the carbon.
The composition, pore structure, micro morphology as well as the electrochemical performance in H2SO4 has been investigated in detail.
The pore structures of the samples were characterized by using nitrogen adsorption at -196 °C (ASAP 2010M, Micromeritics).
Pore structures.
The carbon exhibits a loose piece structure.

The structure, phase evolution and morphology of the as-prepared YAG nanopowders were tested by XRD, BET and SEM.
Conditions of powder preparation Sample A B C D Metal ions concentration of solution (mol/L) 1 1 0.1 0.1 Time for annealing at 700°C (h) 3 / 3 / Time for annealing at 900°C (h) / 3 / 3 The phase structure of the nanopowders was characterized by XRD.
This homogeneous coating structure can prompt the solid state diffusion.
Without the special coating structure, as shown in Fig.5, agglomeration during drying and annealing process is easier.
Moreover, with increasing concentration of starting solution, the size of powders is smaller due to the special coating structure of YAG precursor.

Preliminary electrochemical measurements of as-synthesized CNTs were carried out using cyclic voltammetry instruments at constant scan rate to see the mechanism of Li-ion insertion and extraction into/from CNSs structures during cycle tests.
One type of structure that has again become a recent focus of attention is the spherically shaped carbon material.
The pore structures of CNSs were characterized by means of N2 adsorption-desorption isotherms at 77 K using a physisorption analyzer.
Table 1 shows porous structure of the carbon product prepared by varying the method of catalyst preparation Both of them did not show a relevant effect on the average pore size diameter within the range tested.
Kleinschmit, Ullmann's Encyclopaedia of Industrial Chemistry, Vol.

Several studies have shown that protein adsorption is sensitive to several factors, including the pore size and surface chemistry of the mesoporous materials, the dimensions and isoelectric point of the protein and the solution conditions [2].
The pore structure characteristics inferred from the analysis of the nitrogen isotherms are summarised in Table 1.
So, on the whole the results show that for MCF(2), and under the experimental conditions studied, the pore structure characteristics have some advantages over those of SBA-15, yet not very significant.
BSA has a globular heart shaped structure of 5.0 x 7.0 x 7.0 nm3 but can also assume a prolate ellipsoid shape of 4.0 x 4.0 x 14.0 nm3 [2, 12].
Unger, Royal Society of Chemistry, London (1997), p 81

MB is a heterocyclic aromatic chemical compound with many uses in many fields, such as biology and chemistry [14, 15].
The peaks at the wavenumber of 524 cm-1 and 678 cm-1 indicate the presence of Ti–O–Ti bond vibrations and O–Ti–O bending, respectively, indicating the existence of the TiO2 crystal structure.
These peaks indicate that the crystal structure formed in TiO2 is anatase.
Thus, the XRD analysis results validate that the tested TiO2 has an anatase crystal structure, which highly provide good photocatalytic activity.
This well-formed crystal structure can enhance the efficiency of photocatalytic reactions in the MB degradation process.