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This again shows that some of the bonding structures are changed from TeO4 to TeO3+1 or TeO3 polyhedral.
The addition of ZnCl2 exceeding 20 mol % cause the glass structure to become less rigid and as such the local structure of ions become less distorted [16, 17].
The addition of ZnCl2 is caused an additional change in the bonding structure of the glass from TeO4 to TeO3+1 or TeO3 polyhedral where the network structure became more open.
El-Moneim: Materials Chemistry and Phys.
Reisfeld: Structure and Bonding.

Dave 2 and Jae-Chun Lee1,a 1 Korea Institute of Geoscience and Mineral Resources(KIGAM), 30 Gajeong-dong, Yuseong-gu, Daejeon 305-350, South Korea 2 Department of Chemistry, Southern Illinois University, Carbondale, IL 62901, U.S.A.
Spinel-structured ion-sieve type lithium manganese oxides have good selectivity for lithium ions in the aqueous phase of the topotactic extraction of lithium ions with acid.
To prepare the lithium adsorbent, spinel-structured LiM0.5Mn1.5O4(M=Mg, Zn) precursor compounds were synthesized through the solid-state reaction at 600r& for 4 hrs.
Fig. 3 shows the XRD result of the process mentioned above, giving all diffractive results in the spinel structure.
After the lithium elution by acid treatment, a well-maintained original structure was revealed.

The surface structure of the n-doped sample S1 and the p-doped sample S5 are visualised in Figure 1.
The cone structure is also clearly visible in cross-section TEM pictures, as shown in figure 2a) for sample S2.
In figure 2b) a plan view sample from S3 shows the deposited nanograin, twin and stacking fault surface structure of the low plasma frequency hydrogenated sample S3.
Nanodiffraction of the small grains showed a randomly oriented grain structure.
Raman Shift (cm -1) (a) (b) surface structure changes slightly for low post annealing temperatures.

Carbon nanotube is a special tube made by graphene sheet and has nice tubular structure (Fig. 1) [4, 5].
Surface chemistry and mechanism of pollutant absorption on these CNT surfaces are i) well developed mesopore structures ii) large accessible external surface area iii) fibrous shape with high aspect ratio iv) hydrophobic characters of CNT able to pre-concentrate multiple pollutants (e.g. humic acids, fulvic acids etc.) and v) electrostatic interaction between CNTs and other charge pollutants - all of these parameters have given extreme removal power of pollutants from water over all existing methods (Fig. 1) [1, 3].
These pores act as mesopore and/or higher size give CNTs structure more surface area which can concentrate microbes (bacteria parasites and viruses) with high affinities (Fig. 1) [1].
Surface structures of carbon nanotubes have also cytotoxic effects which inhibit the growth of microbes on it and have shown to contribute self cleaning properties of carbon nanotube adsorption filter [1].
Immobilized enzymes accelerate pollutants removal capacities of CNT structures fast and furious and even can be applied to sense and mitigate very low concentration contaminants present in water, including those that may resist biodegradation (Fig. 2).

Introduction The Li3V2(PO4)3 of monoclinic structure , with a 3D network structure constituted by VO6 octahedron and PO4 tetrahedron , which we called NASICON structure (Sodium Super Ion Conductor) is one of the most promising materials due to its good Li ion mobility, high lithium capacity , high operate voltage and structure stability.
The effects of different synthesis conditions on the structure and morphology.
All peaks on XRD spectra can be indexed to Li3Fe2 (PO4)3 structure.
[3] Li Li, Guohua Li, Shiquan Wang, et al ,The preparation and performance study of Li3V2(PO4)3 , Chinese Journal of Inorganic Chemistry , 2010, 26 (1):126-131
[6] Morgan D, Ceder G, Saidi M Y, Experimental and computational study of the structure and electrochemical properties of Li3M2(PO4)3 compounds with the monoclinic and rhom bohedral structure, J Chem Mater , 2002, 14: 4684-4693

Krishnan * 2, b, Charles C Kanagam3, c, S.Muthu4, d 1Research and Development Centre, Bharathiyar University, Coimbatore 641046 2Department of physics, Valliammai engineering college, Kattankulathur, Chennai 603203 3Department of Chemistry, Valliammai engineering College, Kattankulathur, Chennai 603203 4Department of Physics, Sri Venkateswara College of Engineering, Pennalur, Chennai 602105 asarojoe@gmail.com, bkrishveni63@gmail.com,ccharlesckin@yahoo.com, dmuthu@svce.ac.in Keywords: Synthesis; Crystal structure; Vibrational frequency; DFT.
Crystal structure Determination.
Results and discussion Crystal structure analysis.
Geometrical structure.
The crystal structure is stabilized by N-H---O and C-H--O type hydrogen bonds.

So, it is vital to increase the safety of the structure in a dynamic environment.
Shallow pyramidal trusses are found in various engineering areas [8], as they constitute the basic substructure of several structures, ranging from large structures like geodesic domes [9] and folding structures [10] up to carbon nanostructures [11, 12].
The observed nonlinear behavior is typical of shallow structures.
They display the characteristic softening behavior of shallow structures.
Kroto, C60, fullerenes, giant fullerenes and soot, Pure and Applied Chemistry. 62 (3) (1990) 407-415

Okyar Tubitak Marmara Research Centre, Materials and Chemistry Technologies Research Institute, PO 21, 41470, Gebze, Turkey Keywords: frit, fritware, stonepaste, faience, glaze, lead glaze, SEM, Iznik tiles Abstract.
Results Tin frits Most of the excavated frits containing tin are associated with ceramic debris such as kiln structure or crucible exhibiting a layered structure in cross-section.
The layered structure is composed of simply a quartz layer under the frit, kiln structure or the fritting pan.
This sample is estimated as an unfinished intermediate product having a structure, which is more heterogeneous and complex comparing to the other analysed frit fragments.

These geometries used for the 3D simulations are obtained basically using two different procedures: developing idealized structures [5] or using real structure-based models [6] in order to reproduce real clay geometries.
Using this second strategy with real structure-based models, the results obtained were more accurate that the ones obtained with the idealized models when compared against experimental investigations.
Even when used for 2D simulations, these types of real structure-based models gave more accurate results [7].
This paper describes in a first approach, the differences obtained when comparing real 3D geometry based simulations against idealized structure based models in terms of mechanical properties.
Thomas, Electron Tomography of Nanoparticle Catalysts on Porous Supports:  A New Technique Based on Rutherford Scattering, Journal of Physical Chemistry B, 105 (33), (2001) 7882-7886

Y3+ and Gd3+ ions as energy transfer agency promote the excitation energy transferred from the lattice structure along the sensitizer to the activator.
Using the simple and easy to operate hydrothermal method synthesis of a series of NaYF4 doping different amounts of Gd3+ and tudied the structure and upconversion luminescence properties.
In β-NaREF4 structure, there are three kinds of cation distribution types: RE3+ occupy the space of cation alone; 1/2 Na+ and 1/2 RE3+ and occupy the space of cation; and Na+ and Electron vacancy occupy the position of the cationic gaps.
When doping amount to 50%, the pure six-party phase structure, the mechanism analysis for low atomic number of lanthanides has a higher electron cloud deformation trend and the formation of more conducive to the six-party phase structure. 980 nm wavelength excitation under different transformation on the luminous intensity, by changing the ratio of doping ions can be converted into glow on crystal morphology and luminous intensity for effective control.
Journal of American Chemistry Society. 2008, 130(17): 5642-5643