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Ullmann's Encyclopedia of Industrial Chemistry (2000)
Guo, Polyacetylenes of marine origin: chemistry and bioactivity, Chem.
Tsutsui, Introduction to Metal π-complex chemistry, Springer Science & Business Media (2013)
Li, Conductive polymer composites with segregated structures, Prog.
Ahmed, Structure and dynamics of polypyrrole/chitosan nanocomposites, Polym.

So it is desirable to understand the structure and properties of GBs in silicon polycrystals at an atomic and electronic level.
It is assumed that this structure represents the "core" of a thermal donor.
As assumed in [3], similar structures involving threefold O atoms can form lagger complexes as well.
Cluster models of the grain boundary structure Cluster models of GBs have been constructed as follows.
Chemistry Vol. 10 (1989), p. 209

The difference lies in the presence of parameters of climatic zone and test methods in the first model, while the second model considers changes in physical and mechanical properties and structure of materials during aging under conditions of full-scale exposure and accelerated climatic tests.
It was established in special study that this indicator is chosen as characteristic indicator of climatic resistance of both material sample and structure as a whole.
Pavlov, Aging of plastics in natural and artificial conditions, Chemistry, Moscow, 1982
Lavrov, Mechanics of Composite Materials and Structures. 10(4) (2004) 532-544
Russkikh, Mechanics of Composite Materials and Structures. 13(1) (2007) 97-112

On the other hand, at 100 °C anatase TiO2 phase structured was gained which is similar with the TiO2 precursor.
Results and discussion XRD analysis was carried out to study the crystal phase structure of hydrothermally synthesized samples at different reaction temperature.
The diameters of nanofibers are within 25 – 30 nm with several hundreds nanometer in length and attached to each other to form layered like structures.
Bando: Structural features of titanate nanotubes/nanobelts revealed by raman, x-ray absorption fine structure and electron diffraction characterizations.
Materials Chemistry and Physics Vol. 78 (2003), p. 239

The products of glass corrosion have influence on the structure and properties of fibre during remelting of glass marbles and therefore decrease the quality of leaching process.
The presence of Al in the bulk glass structure and the elimination of nonbridging oxygen lead to increasing of leached layers resistance to transformation [5].
Sodium ion migrates into the solution, bridging oxygen incorporate another silica-oxygen group forming stable structure [6].
The structure of fibre into textiles after leaching is thermally unstable.
The results of DTA agree the stable structure of silica high fiber because have not thermal effects related changing of network of silica.

A study of crystalline structure, magnetic and magnetocaloric properties of Dy(Co1-хFeх)2 (х = 0.10, 0.15) intermetallic compounds has been undertaken.
A general feature of their magnetic structure in a case of heavy R–component is an antiparallel R- and 3d-ions sublattice magnetic moments orientation.
Phase composition control and crystal structure studies were carried out by means of X-ray technique (Bruker D8 Advance diffractometer) with Cu Kα-radiation.
The 1:2 composition phase has a cubic structure of MgCu2 type with Fd3m space group.
Gschneider, Handbook on the Physics and Chemistry of Rare-Earth, North-Holland publishing company, 1979, p. 231

.%) alloy was composed mostly of plate-type phase with 10H-type LPSO structure.
In addition, it was clearly showed that the LPSO phase has a chemically ordered structure by using HAADF-STEM or 3DAP techniques [7,8].Therefore, these structures are also the focus of structural interest.
Therefore, this ED pattern indicates 10H-type LPSO structure.
Conclusions 1) The Mg85Ni6Y9 alloy was composed mostly of 10H-type LPSO structure.
Barsoum: Progress in solid state chemistry 28 (2000), p 201

Box 522, 11001 Belgrade, Yugoslavia 2 Faculty of Chemistry, P.
The crystal structure of the samples annealed at 1000 °C was refined using the Rietveld profile method.
The crystal structure was checked by X-ray diffraction data.
Refinement of the crystal structure of NiFe1.9M0.1O4 The crystal structure of all prepared samples annealed at 1000 °C was refined within a frame of the Rietveld full profile analysis method.
The crystal structure parameters were refined within the space group Fd3m and refined values of crystal and atomic parameters and corresponding R factors are given in Table 1.

The ceramic material found at the archeological site in Caninhas, shows funerary structures of combustion and various objects of Tupi-Guarani indigenous use.
This site consists of funerary structures, combustion structures and various objects of daily use of indigenous people who inhabited the area, and these components were saved and recorded.
The experimental results should be examined in question concepts and theories of physics and chemistry [8], such as [9]: ü Physical transformations: crystallization, solidification, melting, evaporation, glassy transitions, changes of crystalline phases.
The points that differ between Fig. 4 (a) and Fig. 5 (a) are: Ø The peaks at 291 ºC referent to the loss of chemically bound water; Ø Peaks at 552 ºC refer to the transformation of quartz in its α crystalline phase to β [11], or the dehydroxylation (elimination of OH- of crystalline structure) of kaolinite, transforming into metakaolin [12], as reaction (A); Ø The peak at 1217 ºC which is due to nucleation of orthorhombic mullite [12] or cristobalite formation [13], as shown in reaction (B) and (C). 2SiO2.Al2O3.2H2O 552 ºC 2 SiO2.Al2O3 + 2H2O [A] Metakaolin Kaolinite 2[SiO2.Al2O3] 1217 ºC 2SiO2.3Al2O3 + SiO2 [B] 1:1 Secondary Mullite 1:1 Primary Mullite (spinel Al/Si) Cristobalite SiO2 1217 ºC SiO2 [C] Amorphous Silica Cristobalite The aluminum hydroxides structure [D] consisting of an anti-parallel coupling
Molecular water is not present, and the OH-directions form zig-zag chains between the planes of the oxygen ions, depending on the kind of structure- for example Boehmite, Diaspore or Gibbsite [14].

After sublimation of the frozen water, solid structures which mirror the grain boundaries of the ice are left.
In Figures 2 and 3 are given typical aerogel structures for clay, and polymer/clay materials, respectively [7,8].
Clay Aerogel Structure; Figure 3.
Polymer/clay Aerogel Structure; reprinted by permission of ref. [7].
Schiraldi; “Foam-like Materials from Abundant Natural Resources” Green Chemistry, Vol. 10, p. 1078 (2008)