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Red mudstones can be classified into three major types based on the characteristics of their sedimentary structures, which are closely relevant to REEs of red mudstones.
Based on the characteristics of their sedimentary structures, these red mudstones can be divided into non-fluvial structure and fluvial structure according to the presence of the fluvial structure.
The second type is red or purplish red with fluvial structures of horizontal bedding and wavy bedding being observed, partly interbedded with siltstones.
The third type is red mudstones of alluvial fans with the main occurrence of massive structures and few occurrence of deformation and exposure structures.
Yang: Environmental Chemistry Vol. 27 (2008), pp.222-225.

On the basis of analyzing the principle of SPR, the fiber sensor based on SPR was designed and the system structure model was given.
Detection System Structure Based on SPR The detection system based on the SPR fiber sensor is to use the relation between the medium refractive index and the resonance wavelength, measure the intensity of the reflected light, determine the resonance wavelength, and finally measure the refractive index of the tested medium.
The basic structure of SPR fiber sensor is shown in Fig. 1.
(a) Structure Design of the SPR fiber sensor (b) The real situation of an SPR fiber sensor Fig. 1 Probe structure of SPR fiber sensor The basic sturcture of the detection system based on SPR fiber sensor is designed in this study.
Field analytical chemistry and technology, Vol. 5, No. 5, (2001), p. 222-227

X-ray diffraction analysis indicates that the doped samples exhibit a hexagonal ZnTiO3 structure.
The result indicated that the doped sample exhibited a cubic ZnTiO3 structure.
Phase analysis indicates that the doped samples also exhibit a hexagonal ZnTiO3 crystal structure.
Therefore the nominal stoichiometry of the product can be expressed in the same formula according to the first possibility: Zn(1-x)NixTiO3, with ilmenite structure.
XRD patterns indicate that the doped sample exhibits a hexagonal ZnTiO3 structure.

Visible-light-induced BiVO4-SiO2 composites photocatalysts with monoclinic scheelite structure were successfully synthesized via a sol-gel method, and were characterized with XRD, XPS, DRS, SEM and BET.
XPS analysis of BiVO4-SiO2 composite photocatalysts: (a) Bi4f; (b) V2p; (c) O1s; (d) Si2p Morphologies and structures performance.
The porous structure can increase the specific surface area of the sample, and give addition place for the photocatalytic reaction.
Music´ et al: Journal of Molecular Structure, 744–747, (2005), p. 535–540
[15] Jianqiang Yu, Yan Zhang et al: Journal of Solid State Chemistry, 182, (2009), p.223–228.

As the double-layered structure was observed in the NWs by transmission electron microscope images, it is possible that those are silicon-based NWs with Si core and SiO2 shell structure.
Introduction A simple sensor with high sensitivity is desired in the fields of chemistry, biotechnology and medical science.
Since the double-layered structure was observed in both samples, as reported by several researchers [7-10], it was possible that those are silicon-based NWs with Si core and SiO2 shell structure.
From TEM observation, as the double-layered structure was observed in the NWs, it is possible that those are silicon-based NWs with Si core and SiO2 shell structure.

The XRD results show that Al-doped ZnO nanofibers present ZnO hexagonal structure.
Analysis of crystal structure Fig.2 shows the typical XRD spectra of the Al0.05Zn0.95O obtained by annealing procedure at 700℃{TTP}8451 .
The experimental results of diffraction parameter shows a good correlation with the JCPDS standard card (No. 36-1451) and this indicates that the nanofibers which we fabricated have hexagonal wurtzite crystal structure .In addition polycrystalline nanofibers which we prepared had a good crystalline and the result also indicates that Al doped ZnO do not change the crystal structure because the existing of Al was in the form of clearance or substitutes in the ZnO and did not appear the crystal structure of Al2O3 . .
Kang , “Comparative Structure and Optical Properties of Ga-, In-, and Sn-Doped ZnO Nanowires Synthesized via Thermal Evaporation,” Journal of Physical Chemistry B, Vol. 109, pp.2526-2531,2005
Huang , “Synthesis,Structure and Properties of Sn-doped ZnO Nanobelts,” Acta Physico-Chimica Sinica, Vol.23, pp. 55-58, 2007

This investigation found that bulk structure as well as microstructure were affected by the presence of high Sn content.
The sample structures are shown in Fig.3 which can be seen that at 200 and 300°C, the bulk structure remained unchanged by visual observation.
The dendritic structure changed into rounded phase with the darker silicon phase dispersed around a-Al.
The chemistry of this phase cannot be confirmed since there was no related literature on this alloy or even similar grade alloys.
Higher Sn content affected bulk structure such that it formed large pores within the specimen after homogenized at high temperature.

Fe3O4 NPs were selected as the reactive-template, and they acted as both templates to shape structure of PPy NPs and initiator source, simultaneously.
Thirdly, the finial products were subtle to reactive environment, slight change in experimental condition resulted in altered particle morphology and structure [7].
The structures of PPy and Fe3O4 NPs were characterized by JEOL-2010 TEM operating at 200 kV.
The chemical structure of Fe3O4 and PPy NPs are characterized by FT-IR spectra in Fig. 2b.
Therefore, Fe3O4 NPs can not act as the template to shape the structure of PPy NPs and only PPy aggregates with irregular shape can be observed in Fig. 3d.

We have shown that the Peierls barriers are strongly dependent on the dislocation core structures.
The C(g) showed a C-C bond length of 1.65 Å, Fig. 1: Projections on the glide plane of the partial dislocations and the respective band structures.
The band structure analysis gave a half-filled band ranging from Ev+0.21 eV to the bottom of the conduction band (CB).
Due to the strong reconstructions, the band structure analyses have shown that the 30° AR partials have no mid-gap state.
Summary and Conclusions First principles calculations have shown that the Peierls barriers are strongly dependent on the dislocation core structures.

Building structures are very diverse in their purpose and application [1, 2].
Fire resistance of reinforced concrete and steel structures.
Fire resistance of reinforced concrete and steel structures, 1–166
Nakamoto, Infrared and Raman Spectra of Inorganic and Coordination Compounds, Part A: Theory and Applications in Inorganic Chemistry.
Pinkas, Control of micro/mesoporosity in non-hydrolytic hybrid silicophosphate xerogels, Journal of Materials Chemistry.