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The defect is a necessary component of b'', relating the structure to the Al matrix.
The full b'' structure requires ordering of several defects, as shown in Fig. 3.
Pairs of line defects coupled along Al and the GPB zone structure.
The arrangement principles relating structures of b'', U2, b' and the Si-network.
The principles apply also in the interfaces between these structures.

Has this kind of phenomenon is not accidental, the Bazant size effect law and the multiple fractal size effect law no longer take appears has compares low-intensity the small material unit probability the statistical theory which increases along with the structure size's fill-out as a foundation, but is and the ceramsite concrete special structure and the aggregate to the size the influence close related.
Acknowledgment The project was supported by Key Laboratory of Efficient & Clean Energy Utlization,College of Hunan Province,Changsha University of Science and Technology References [1] Guochengju,physics and chemistry of concrete [M].
Materials and Structures,1999,32: 210～217
[3] Building structure institute of China academy of building research.
Material Structure, 1995, 28(7), 311-317.

Reactors used for catalytic combustion of methane Fenfen Wang1, Rui Fu2, Ruisheng Hu3, a, RanranDing4 School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, PR China aCorresponding Author.
As shown in Fig.1, the catalytic fixed bed reactor has a simple structure.
They use three different types of γ-Al2O3: a well defined ordered macro porous structure, a random macro porous structure and a structure without macro-pores to prepare the catalyst.
Test results for the catalytic combustion of methane as Fig.4 shown indicated that the catalysts supported on coatings with an ordered or random macro-porous structure showed better reactive activity than those on coatings with a dense structure.
The structure of catalytic membrane reactors as shows in Fig.5 [22] .

This structured surface has also been used as the joining surface due to practical necessities.
As mentioned above the CERAN has been joined to the interlayer and the steel on the structured side.
Figure 2: Height profile of the structured CERAN surface The ultrasonic welds have been performed on a torsional ultrasonic welding machine Telsonic TSP3000E.
Here the interlayer only adapts to the higher areas on the structured CERAN surface.
Materials & Design 55: 263–273. doi: 10.1016/j.matdes.2013.09.074 [6] Messler RW (2008) Principles of Welding: Processes, Physics, Chemistry, and Metallurgy, 1., Auflage.

Zr, Hf, V, Nb, and Mo are bcc stabilizer in Ti alloys, then it is reasonable to stabilize B2 structure (ordered bcc structure) by addition of these elements.
TiCo, TiRu and TiIr have also B2 structure as well ase TiPd.
TiIr has two-step martensitic transformations such as B2 -> distorted B2 structure -> orthorombic structure in the composition rage between 48 and 52 Ir [13].
When Ir lean composition between 42 and 46 at%, B19 structure which is also stable structure in TiPd, becomes stable.
Wells, Structural Inorganic Chemistry, 5th ed., Clarendon Press, Oxford, (1984) p. 1288

H L Zhang et al. [3] made AFM characterization of the bee-structure on the surface of OMMT modified bitumen.
The existence of an intercalation structure between OMMT and bitumen were indirectly confirmed [3].
Ferry derived the WLF equation based on the relationship between temperature and the physical structure of the fluid.
Although both OMMT and LDHs have a typical layered structure, they are organic and inorganic respectively.
Isacsson, Effect of ageing on bitumen chemistry and rheology.

This martensitic β phase has HCP structure and seems black upon etching.
The κi, κii and κiv phases are based on Fe3Cl crystal structure with DO3 space group, whereas, κiii and κv are based on NiAl crystal structure with B2 space group.
The α-phase comprised almost 43% area fraction of the micro-structure and rest was β’.
Fentiman, Observations on the Structure and properties of Wrought Copper-Aluminium-Nickel-Iron Alloys, J.
Ridley, The morphology, crystallography, and chemistry of phases in as-cast nickel-aluminum bronze, Metall.

In this work, we show that by simply changing the molecular weight of the polymer, different morphologies such as NRs, hierarchical structures, and NPs of superconducting YBCO could be obtained.
All the samples could be developed to the orthorhombic crystal structure by appropriate annealing of the as-spun polymeric fibers.
Ding, "Fabrication of YBa 2 Cu 3 O 7− x (YBCO) superconductor bulk structures by extrusion freeforming," Ceramics International, vol. 42, pp. 15836-15842, 2016
Chen, "Electrospinning of polymer nanofibers: effects on oriented morphology, structures and tensile properties," Composites science and technology, vol. 70, pp. 703-718, 2010
Ramakrishna, "Improved electron diffusion coefficient in electrospun TiO2 nanowires," The Journal of Physical Chemistry C, vol. 113, pp. 21538-21542, 2009

Here, parameters such as fracture toughness, impact resistance and durability of cementitious composite are of the particular importance in practical design of UHPC structures.
At high temperatures, especially in case of moist structures, progressive or explosive spalling leads to high structural damage of UHPC [2].
Then, the water vapor pressure generates significant tensile stresses inside the dense concrete structure leading to concrete spalling.
Due to the increasing popularity of HPC in building industry, the risk of explosive spalling in concrete structures in case of high temperatures or fire exposure became apparent.
Baradan, Effects of fibre type and matrix structure on the mechanical performance of self-compacting micro-concrete composites, Cem.

Upon the formation of "island structure" cracking resistance of the materials will suddenly change, that is, the fracture toughness of the materials greatly improved, while the original mechanical properties, heat resistance of the materials lost very small [22].
Toughening mechanism neglected of the epoxy matrix structure at past, in fact, the average of cured epoxy resin network chain length have an important effect on toughening.
When the elastic modulus of the dispersed phase particles in the "island structure" is lower, its main role is to induce epoxy matrix yielding and occur plastic deformation, which greatly improve the fracture toughness.
It can not play epoxy deformation energy potential if there is no "island structure".
Zhang: Applied Chemistry Vol. 13(1996), p. 113-116