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Heggie 1,c 1 Chemistry Department, University of Sussex, Brighton BN1 9QJ, UK 2 CNR-IMM Sezione di Bologna, via Gobetti 101, I-40129 Bologna, Italy a is25@sussex.ac.uk, bg.savini@sussex.ac.uk, cm.i.heggie@sussex.ac.uk Keywords: Carbon, Graphite, Nanotubes, Scroll, Screw dislocation, Glide motion.
The structure is optimized within DFT.
The structure is consistent between supercell and cluster-supercell systems.
The structure of this screw dislocation is optimized within DFT.
Figure 3. a) and c) are ground-state structures of a screw dislocation. b) Structure at the saddle point of the glide motion of a screw dislocation.

When the amount of PVP added was 0.5g, the diameter of nanorods was about 77-120nm, and a neat array structure appeared.
Among them, the one-dimensional TiO2 nanorods array structure has unique advantages compared to other structures or two-dimensional film structures, the regularly arranged TiO2 nanorod array has obvious quantum confinement effect, high specific surface area and stable structure, which can improve the interfacial separation ability of photogenerated electron-photogenerated hole pairs and carrier transport efficiency, thereby improving photocatalytic performance[8-11].
When the amount of PVP added was 0.5 g, the diameter of the nanorods was about 77-120 nm, and a neat array structure appeared.
Zhao, Vertically aligned nanorod-like rutile TiO2 single crystal nanowire bundles with superior electron transport and photoelectrocatalytic properties, Journal of Materials Chemistry .22 (2012) 2465-2472
Chemistry of Materials, 2014, 26(1): 415-422

The structure of the title compound was also modelled by density functional theory (DFT) calculations.
The molecular structure of C12H16N2O4 is presented in Fig. 1.
The multi-temperature X-ray study of BHETA does not reveal any spectacular changes of the structure between 100 and 300K.
The translation components are close to zero what is the characteristic feature for centrosymmetric structures.
The molecules in this crystal structure are bound together by two types of strong hydrogen bonds N-H···O and O-H···O.

Synthesis of Myristyl Sulpho Betaine Type Amphoteric Surfactant Rongming Zhang, Zhenyu Zhang,Hongman Shan,Yue Wang College of Chemistry and Chemical Engineering Northeast Petroleum University Daqing, China, Daqing,Heilongjiang Province,China Zrm3000zrm@163.com Keywords: myristyl sulpho betaine;amphoteric surfactant; tetradecylamine ; pentaerythritol..
The results have show that the reaction time and mole ratio (Dimethyl tetradecyl tertiary/ Intermediate) were 16h and 1.2/1 at 120℃.The structure of myristyl sulpho betaine type amphoteric surfactant was identified by FTIR.Then it was performed the surface tension tests to determine the critical micelle concentration (cmc).
Introduction The myristyl sulpho betaine with two hydroxyl groups possessed special nature while compareing with other amphoteric surfactant in applications.The solution possess more excellent physical and chemical properties,such as higher surface activity,lower kafft points,wetting performance,solubilization capacity and washing capacity[1].The structure of myristyl sulpho betaine molecule enhanced the hydrophilicity of hydrocarbon chains, Myristyl sulpho betaine as a type of amphoteric surfactants have been applied to household chemical industry and crude petroleum industry[2].With the promotion of betaine amphoteric surfactants, myristyl sulpho betaine will also be widely used in the agricultural, leather,textiles, latex and other industries[3].
Considering the cost of catalyst and after-treatment of product,we should choose suitable amount.Infrared ray spectrum(IR) proved that the molecular structure of product was right.
[3] Xie Yajie, Cheng Wenjin.Synthesis and structure characterzation of novel gemini surfactants [J].

The structure of product was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM).
Flower-like structure was also prepared in 5% PAM hydrogel whose morphology was similar to that in figure 2d(as shown in figure 2f), but the lamellas which make up the flower-like structures become thinner(about 20nm) and larger(about 1μm).
Fig.2 SEM images of Copper sulfide prepared in different current and Am content: (a)1 mA, 2% Am; (b) 1 mA, 5% Am; (c) 2 mA, 2% Am; (d) 2 mA, 5% Am; (e) 3 mA, 2% Am; (f) 3 mA, 5% Am The mineralization patterns are determined by the characteristics of the chemistry of the hydrogel scaffold and the electric-current-assisted diffusion process.
Then a possible formation mechanism of these various structures was proposed.
Therefore a lamellar structure (Figure 2 c,d,e,f), not a sphere structure, is formed.

The structures of lappaconitine derivatives have revealed many structural phenomena, including intramolecular hydrogen bonds and chirality. the title compound is a interesting structure containing lappaconitine.
-P.: Synthesis and Crystal Structure of Lappaconitine Hydrobromide.
Chinese Journal of Organic Chemistry. 27 (2007). 1409-1413
Program for the Solution of Crystal Structures.
Program for the Refinement of Crystal Structures.

Fourier transform infrared spectroscopy instrument (FT-IR, Nexus670) was used to measure the morphology and surface chemistry of GNS0, GNS5 and GNS15.
Fig. 1(a) presents the SEM image of GNN0, a wormlike and loose structure, consisting of many GNSs with weak connection.
Moreover,the thin wrinkled structure represents a curled and corrugated structure that the graphene owns intrinsically.
Summary This work investigated the effect of GNS structure on the mechanical properties of GNS/epoxy nanocomposite.
We used the different sonication time to regulate the structure of GNSs.

Powder X- Ray diffraction patterns showed the formation of body centered tetragonal structure for CuFe2O4 and cubic structure for CoFe2O4 and NiFe2O4.
The phase analysis for confirming the formation of the spinel structures has been done using powder X-ray diffractographs.
For the copper nanoferrite, the XRD planes can be indexed to (101), (112), (103), (211), (220), (321), (224) and (400) planes corresponding to the body centered tetragonal structure (JCPDS card No. 00-006-0545).
The Debye Scherrer equation has been used to calculate the crystallite size, considering the most intense peaks at (311) plane for the spinel cubical structures and at (211) plane for the tetragonal structures.
Somorjai, Introduction to Surface Chemistry and Catalysis, New York, Wiley, 1994.

Designations in the rest of the article: Nano (Ti)-5T (SS316L), Nano (Al)-5T (SS316L), Nano (Cu)-5T)-(SS316L), Nano (MoSi2)-5T (SS316L), and Nano (Ag)-5T (SS316L) for indicating chemistry of nano structure.
The nanostructures have an open pore structure as noted in Figure 2 for the MoSi2 nanostructure.
Similar results were obtained across all nano species (i.e. of varying chemistry).
A high curvature has a much stronger impact than a flat surface of the same chemistry.
The original grain structure is magnified in (a1) and (b1) and (b2).

Silsesquioxanes are now recognized to have enormous potential as building blocks for various advanced materials, and their applications can be found in areas of catalysis, coordination chemistry, and materials science.
Measurements The structure of TMSPMA hybrid composites was verified by FTIR spectroscopy by using a Bruker Vertex 70 spectrophotometer.
The schematic structure of the hybrid composites is presented in Scheme 1.
The Structure of TMSPMA Hybrid Composites The crystallographic structure was investigated by FTIR spectroscopy and X-ray diffraction.
In the silica structure, three types of particles organization can be distinguished.