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The spinel-type structure AB2O4 generated in the sintering process at high-temperature, SiO2, Al2O3 crystals lattice become in the spinel structure to replace the lattice in [Fe 2+, Fe 3+] to form a similar FeSi2O4, FeAl2O4 and other complex systems.
Those spinel-type structure contribute to enhance the infrared emissivity [6-7].
Pharmaceutical Chemistry Journal, 2005,39(12)：627-629
Mullite Synthesis and crystal structure of the low temperature [J].
Infrared Radiant emissivities of ceramics with spinel structure [J] International Journal of Infrared and Millimeter Waves, 1993 ,14(9):1855

The presence of broken ZnO rods, sea–urchin–like structures with hollows and flakes with average sizes of 4.40 μm (Figure1c).
The spectra of the ZnO/PANI nanocomposites match to the diffraction peaks of the standard reference data (JCPDS 36–1451) which indicates that the deposited structures are most likely ZnO with hexagonal wurtzite structures.
SEM images revealed the presence of ZnO nanorods and plate–like structures and porous grains for PANI chains.
Increasing the NH4OH concentration for the formation of ZnO nanostructures, the micrographs showed mostly plate–like structures and observed an increase of its sizes.
The size increase was ascribed to high OH– concentration while the plate–like structures was due to the presence of PANI around the ZnO rods.

Versatile reciprocating friction and wear tester MFT-R4000 was purchased from Lanzhou Institute of Physical Chemistry.
The mor- phologies and structures of D-GN were observed by X-ray powder diffraction, scanning electron microscopy, transmission electron microscope.
Reason is that some groups or small molecules exist in multilayer graphene layer edges which make the carbon atom structure layer spacing increase along the c axis [5].
Figure 2 is SEM image of the expanded graphite and the D-GN and shows that the expanded graphite have laminated structure and layer edges of D-GN have fold shaped and obvious layered structure, with the thickness of 10~100nm.
Illustrated in figure 3(a) shows the hexagonal structure of atoms that is the basic skeleton of graphene.

Flavonoids have become an important scaffold in medicinal chemistry due to its bioactivity and availability.
The three dimensional (3D) structure of HER2 tyrosine kinase protein was obtained from Research Collaborators for Structural Bioinformatics Protein Data Bank (RCSB-PDB).
The 3D structure of human HER2 tyrosine kinase was retrieved from RCSB with the PDB ID 3PP0.
Li, K. shun Bi, Bioactive flavonoid in medical plants: structure, activity, and biological fate, Asian J.

The cell structure was ITO/PEDOT:PSS/P3HT:PCBM:PMMA/Ca/Al.
The cell structure was ITO/PEDOT:PSS/Graphene/P3HT:PCBM:PMMA/Ca/Al.
First, the device structure, PEDOT:PSS (Baytron P AI 4083) HTL with a thicknessof 40 nm was spin-coated on to the UV/O3-treated ITO/glass substrates followed by annealing at 120 °C for10 min.
[8]D.R.Dreyer, S.Park, C.W.Bielawski, R.S.Ruoff, The chemistry of graphene oxide.

Density, dimension and distribution of pores are main factors to induce irradiation swelling, especially the size distribution of pellet pores plays an important role. 4×4-4 fuel assembly was a high performance fuel assembly which was self-designed and manufactured, the average burn-up of the fuel assembly was 42GWd/tU.For studying the effect of irradiation on pore modality, the specimens of irradiated UO2 fuel pellets were taken from 4×4-4 fuel assembly after dismantling, microscopic structure and distribution of pores for UO2 fuel assembly by scanning electron microscopy were studied in this paper.
Recrystallization and Rim structure effect were not found.
Recrystallization and Rim structure effect were not found.
Chemistry Industry Publishing Company.

Design Requirements In general, composite materials have been used in aircraft structures due to high specific strength(ratio of strength to density) for lightweight structures and improved damage tolerance property.
It is well known that the carbon fibers have very small and negative axial coefficients of thermal expansion and with an optimized design of tailoring lay-up orientation, fiber type, resin chemistry, and volume fraction, sufficiently low thermal expansion can be obtained for carbon fiber reinforced composite materials.
In honeycomb sandwich structures, the face sheets are the main load-bearing element.
The core provides buckling resistance for the structure while at the same time transmitting shear forces.
Lee, in: Protection of Materials and Structures from Space Environment, edited by J.

Introduction Micro-fluidic chips is widely used in the field of biology science, clinical medicine, chemistry and chemical engineering, pharmaceuticsand so on[1].T-shaped micro-channelsare one of the most commonly usedto study the situation of liquid-liquid two-phase flow.PiotrGearstick [2]made a simple formula to forecast sizes of droplets in T-shape micro-channelformed by two fluids.
The structure sizes of a T-shaped micro-channel havea significant impact on the formation of micro-liquid-columns.In this article, The effect of crossing angle(∠β), the width ratio of vertical channel and main channel(W2/W1), the depth ratio of vertical channel and main channel(D2/D1), the depth-width ratio of main channel(D1/W1) on the formulation of micro-liquid-columnsformed by vertical-shear-flow in a T-shaped micro-channel wasanalyzed.

Using the advantage of small volume similar molecules high copy number, the pursuit of highly parallel computing, a single DNA molecule is the bearing information of the data, hybridization, annealing, connecting operation under the control of connection can be regarded as meta-operating, DNA computing is a kind of chemistry symbols transformation.
It is concerned the molecular structure, K-arms DNA molecules is the best way to express graph and tree structure coding.
The K-arms molecular graph or n vertex structure tree to realize the MSTP solution node structure.
K-arms DNA molecular structure Fig.2.
The molecular structure of the boundary encoding Edge code will use incomplete molecular structure, that is, on both sides of the double chain with a sticky end.

Here, we employed PMHS as structure-directing agent in the preparation of carbonaceous silica xerogels.
From the images, the particles have irregularly porous structures with the pore diameters from 10 to 50 nm.
The results indicate that the sample has mesoporous structures.
The porous structures in the SiC samples are related to the special structure of PMHS.
The special structure of PMHS can lead to the formation of porous structures in the xerogel, which could be kept during the carbothermal reduction process.