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Research on Performance of CRTS I Cement-Emulsified Asphalt Mortar on Site Heng-Qiong JIA1,a,*, Tao WANG1,b, Zhao WEI1,c 1China Academy of Railway Sciences Metals and Chemistry Research Institute, Beijing, China ahengqiong@163.com, b027wangtao@163.com, cweizhao1976@163.com *Corresponding author Keywords: China Railway Track System I (CRTSI), CA Mortar, Filling Layer.
The mortar freeze-thaw damage at winter is caused by the water contained in mortar structure mainly due to external harmful substances will gradually invade mortar with water channel inside, increasing the damage of mortar structure.
This can be inferred, mortar on site has less water channel, compact structure, more superior durability than laboratory mortar.
Pore diameter, content, internal structure were tested by scanning electron microscopy with slightly loose structure (Fig. 8), the pore diameter was about 180μm, air content of the mortar was about 18%, the larger pores in the mortar increased after tests, as Fig. 10 and Fig. 11.
[6] Pore structure and test methods contrast study of emulsified asphalt cement mortar Deng Dehua, etc.

A theoretical study of nonlinear optical properties for stilbene grafted to carbon nanotubes Si Li; Yunxia Wang; Zhao-Di Yang* College of Chemistry and Environmental Engineering, Harbin University of Science and Technology, Harbin 150080, China; *Email: yangzhaodi@163.com Keywords:Stilbene; Grafted carbon nanotube; Hyperpolarizability; Nonlinear optical properties Abstract.
In this paper, geometric structures, electronic structures, one-photon absorption properties and nonlinear absorption properties of organic chromophores (stilbene) grafting onto CNT through different linking ways will be investigated in detail from the perspective of molecular design, the effect of the change of grafting position is also considered.
Computational details Equilibrium geometric structures and electronic structures are optimized using Density functional theory (DFT) on B3LYP/6-31G* level in Gaussian 09 package.
Top view and side view of optimized equilibrium geometrical structures of pure model SWCNT (4, 4) and grafted SWCNT (4, 4) are shown in Fig.2.
Fig.2 Optimized equilibrium geometrical structures, the gray, white, blue and red balls denote C, H, N and O atoms, respectively. 3.2 Electronic structures and one-photon absorption properties Electronic structures are fundamental for interpretation and understanding of the absorption spectra, the calculated frontier molecular orbital energy level (between HOMO and LUMO for all studied molecules) are collected in Fig.3.

The electronic structure of the UD-4 defect in 4H, 6H and 15R SiC Andreas Gällström 1, a, Björn Magnusson1, 2, b, Aurelie Thuaire1,c, Plamen Paskov 1,d, Anne Henry 1, e, and Erik Janzén1, f 1 Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden 2 Norstel AB, Ramshällsvägen 15, SE-602 38 Norrköping, Sweden a andga@ifm.liu.se, bbjorn.magnusson@norstel.com, caurelie.thuaire@cea.fr, dplapa@ifm.liu.se, e ahy@ifm.liu.se, ferj@ifm.liu.se Keywords: Deep level defects, photoluminescence, Zeeman effect Abstract.

Analysis of the structure and morphology of hydroxyapatite nanopowder obtained by sol-gel and pirosol methods Rodica Rogojan1, Ecaterina Andronescu2, Cristina Ghitulica2, Mihaela Birsan2, Georgeta Voicu2, Stefania Stoleriu2, Alina Melinescu2, Adelina Ianculescu2 1National Institute of Rehabilitation, Physical Medicine and Balneoclimatology, Bucharest, Romania 2Faculty of Applied Chemistry and Materials Science, Polytechnic University of Bucharest, Romania 1e-mail; rorogojan@yahoo.com Keywords: hydroxyapatite, sol-gel, pyrosol, X-ray diffraction, SEM Abstract.

Structure, composition and morphology of the obtained V2O5 fibres are characterized.
Their structure and electrical conductivities at high temperature (298~573 K) were characterized.
And the defect reaction is (1) where e’ is an added electron in the structure.
And their layered structure was quite stable within 298~673 K.
Akhtar, et al., Surface chemistry of selected supported metallocene catalysts studied by DR-FTIR, CPMAS NMR, and XPS techniques, Surf.

The AT values of three films were in the order of f-MPT>f-GPT>f-VPT due to complete-cage structures of building blocks (POSS) and the size of organic branches covalently bonded to the silica network in the molecular structures.
Correlation between Optical Properties and the Film Structure.
The more additions of TTB lead to an complete cross-linking system and a tight structure in the films.
The TTB addition results in the hybrid structure containing TiO2 which causes a decrease in the UV-B radiation from sunlight.
The average transparency values of three films are in the order of f-MPT>f-GPT>f-VPT due to complete-cage structures of building blocks (POSS) and the size of organic branches covalently bonded to the silica network in the molecular structures.

The dimension of this structure is 800x20 µm.
The last structure that we have realized was called the "bicycle wheel".
The structures were fabricated as follows.
After complete resist dissolution, plasma etching was performed to transfer the Al pattern to the SiC layer using an ICP plasma system with SF6/O2 chemistry.
SEM comb drive structure where is shown the bending of the cantilever.

Additive Manufacturing technologies allow for the direct fabrication of lightweight structures with improved properties.
Basically, the structure can be discretized with a finite element mesh, the material points become the elements and the density of such elements are the design variables [10].
As an example, in the field of tissue engineering, topological optimization is crucial for the design of 3D biodegradable porous structures (i.e., scaffolds) [11].
Successively, a volume based on the unit cell is built up, thus creating 3D hierarchical porous structures.
Conclusions All the results suggested the possibility to design 3D advanced scaffolds with tailored architectures, biological, mechanical and mass transport properties for soft and hard tissue engineering, by combining additive manufacturing approaches, materials chemistry and surface properties.

The neutron data has elucidated the crystal structure, and enabled the positions of the hydrogen atoms to be determined.
The nanotubes have had no affect on the hydroxyapatite structure.
Neutron diffraction is an analysis technique that can be used for studying atomic structures in the bulk material.
Rietica [3] was the program used to model the diffraction data with the hexagonal hydroxyapatite structure.
Excluding these regions prevents the intensity from the graphite affecting the HAp structure parameters.

This critical review will briefly discuss the chemistry of graphene oxide, including its synthesis, structure, and applications in catalysis.
This structure model isan intermediate form between two ideal structures, C8(OH)4(c0 = 8.22 ×2 Å) and C8O2(c0 = 5.52 × 2 Å).
Structure model of GO:(a) Surface species (b)Folded carbon skeleton D.
Evolution of the electronic structure ofgraphite oxide with the coverage change was also investigated.Lee et al[14]using various tools such asSEM,TEM,XRD,FT-IR, XPS,13C solid-state NMR, and XANES put forward systematically with the structure of GO (figure 5).
Knowledge of graphene oxide’s chemistry offers us more valuable insight into its reactivity and properties, afterwards, inspires us to create even more types of catalysts and the development of catalysis will absolutely become more advanced.