Search results

The biomaterials science, which refers to the structures, the properties, is aimed at researching the micro-structures, biological functions, structuring mechanisms of natural organic textures, at obtaining excellent bionic design methods and exploiting new bionic materials to benefit mankind.
The elytrum of uang is a kind of sandwich structure filled with hollow columns.
This special sandwich structure is of light weights and high strengths resemble the honeycomb structure.
Even the structure and the connected region change with species [[] Yang Zhixian, Wang Weiying, Yu Qingqing, Dai Zhendong, Measurements on mechanical parameters and studies on microstructure of elytra in Beetles, Acta Materiae Compositae Sinica, 24, 2(2007) 92-98. ], it’s generally regarded as a kind of sandwich structures resemble honeycomb structures much.
Nano-materials perform peculiarly in many fields such as mechanics, electromagnetism, thermo and chemistry because of the nanometer effects.

The electronic configuration of C is as [He] 2s22p2 easy to form the conductor with a good price laminate structure.
This structure was completely symmetrical because of the stable bond of σ bond, and no lone electron pair repulsion.
Figure 1 shows the spatial structure of the LiFePO4 and LiFePO4 coated carbon material.
And Fe3P is a mesenchymal phosphide similar as alloy, the P atom fill and combined the gap of the Fe atoms and retained the structure with the metal bonds.
[20] E Zhecheva, Ml Mladenov and P Zlatilova: Journal of Physics and Chemistry of Solids, Vol. 71 (2010), pp.848.

Many measurable properties of solid can be calculated using a theoretical foundation of all the electronic structure calculations.
Generally, the Gaussian 09 is indicated as Ab-initio electronic structure program, whereas the 09 indicating the year 2009.
Gaussian, commercial quantum chemical software package from the Gaussian incorporation was specified as the industry standard in computational chemistry and molecular modeling[15,16].
In addition, the molecule’s conformational analysis was achieved for having an idea regarding species’ lowest energy structure.
The optimized structure of (a)- In7P7H14 H-passivated wurtziod (b)- InP diamantane nanocrystals partial-passivated of In7P7 H14 2.

Morgunova, Influence of steel structure on the relative damping of torsional vibrations, Journal New research in the field of strength of engineering materials, 49(6) (1952) 48-102
Filippov, The Domain structure and magnetic properties of electrotechnical steels, Moscow, 1992
Skvortsov, Role of crystalline and magnetic structures in formation of high magnetomechanical damping in alloys, Journal Physics of Metals and Metallography, 75(6) (1993) 118-124
[6] I.V.Cherednichenko, R.I.Malinina, V.S.Shubakov, A.S.Perminov, V.P.Menushenkov, Je.H.Dinislamova, Effect of Mo content and thermomagnetic treatment on the microstructure and magnetic properties of hard magnetic Fe–Cr–Co alloys, Journal Physics and chemistry of materials treatment, 3 (2011) 78-86
Ivchenko, Formation of Structure and Properties during Thermomagnetic and Ion–Beam Treatments of Soft Magnetic Materials, Journal Solid State Phenomena, 168-169 (2011) 223-226

Comparing with the other microstructure, nano-porous structure may be the most controllable, and its porous structure could significantly improve the battery life and increase Li+ diffusion rate.
To surpass the properties of crystalline V2O5, V2O5 aerogels are attracting increasing interests for their high surface, three-dimensional network, nano-porous structure[9,10].
The nano-porous structure could be permeated by electrolyte and its slim solid–phase structure can shorten the length of the ion diffusion, which is much better than crystalline V2O5 materials[11].
The solvent exchanging process may prevent pore collapse and retain the nano-porous structure of aerogel film.
[11] K.Xiao, G.Wu, J.Shen, D.Xie, B.Zhou ,Preparation and electrochemical properties of vanadium pentoxide aerogel film derived at the ambient pressure, Materials Chemistry and Physics, 100 (2006) 26-30

Phase Morphology and Rheology Behaviors of PTT/POE/OMMT Nanocomposites Ming-tao Runa, Zi-yu Qi, Meng Yao, Wen Zhou and Bing-tao Xing Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, Hebei, P.
The nano-sheets of OMMT and polymer molecules form more and more entangled structure, and this kind of entangled structure leads the melt viscosity to increase.
This result suggests that the entanglement structure is continuously destructed and shear orientation structure is gradually formed at increasing shear rate.
It shows that the entanglement structure can store more elastic modulus.
The entanglement structure formed between OMMT and polymer molecules increases the elastic behavior of melt.

Its crystal structure is unique rutile type.
In this paper, SnO2 nanofilms with different crystal structures were prepared by changing the three process parameters of salt concentration, reaction time and hydrothermal temperature in hydrothermal method.
As the concentration of the reaction solution increases, the macroscopic thickness of the film gradually thickens, and the three-dimensional structure of the surface changes from flat to coarse to coarse peak.
In this paper, SnO2 nanofilms with different crystal structures were prepared by changing the three process parameters of salt concentration, reaction time and hydrothermal temperature in hydrothermal method.
Liao, Arumugam manthiram dual-template synthesis of N-doped macro/mesoporous carbon with an open-pore structure as a metal-free catalyst for dye-sensitized solar cells, J.

Stress is on the mapping mechanism from the standard description language of STEP_NC——EXPRESS to XML，presenting the separate-mapping method with which according to the function and feature of the information to be transmitted and shared, the physical file of STEP_NC is divided into general information structure elements, feature information structure, and operating information structure, realizing the optimally comprehensive mapping with the early binding and the late binding.
It allows that all the models of EXPRESS use one set of libeling set (Scheme), with good universality and portability, especially suitable for definition of all-purpose pattern application This study combining the advantages of the two methods, researched and presented a separate mapping method (SMM), the principle of which is to divide the contents of STEP physical document into three information units when it is mapped, A: general information, B: feature structure, and C: operation structure.
Meanwhile, analyze the structure, pattern, grammar, and semantics of the STEP file, to build up grammar regulations for STEP.
It discomposed the physical document of STEP into general information unit, feature structure unit, and operation structure unit.
Master Dissertation, Chemistry Engineering University of Beijing.(2006) [15] GB/T 16656.11-1996.

UV and IR data confirmed commonly the characteristic absorption of alkyl chain and aromatic segments in molecular structures.
The difference of thermal stability is mainly attributed to the formation of Schiff base group and different substituent groups in molecular structure.
The structures of these molecules were confirmed by 1H NMR.
Chemical structures and abbreviations of azobenzene derivatives.
The difference of thermal stability is mainly attributed to the presence of azobenzene group and substituted groups in molecular structure.

X-ray diffraction (XRD) was used to investigate structure of the silk fibroin hydrogels.
Silk fibroin is a naturally occurring protein polymer which can be processed into a wide range of useful biomaterial formats including sponges, films, micro/nanoparticles, coatings and hydrogels with a high degree of control of structure and morphology.
Conclusions Lots of H2O is stored in silk fibroin hydrogels with 3-D network structure, which makes it contain more capsaicin dissolving in ethylene glycol.
Kaplan, Characterization of Small Molecule Controlled Release From Silk Films, Macromolecular Chemistry and Physics. 214(2013) 280-294