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The results showed that the alloys have the desired stoichiometry and a good homogeneity structure.
The alloy’s structure was determined by x-ray diffraction using the powder method and a Rigaku equipment (D/MAX-2100/PC model).
The peaks of the titanium alloys with the structures a’’ and b were indexed using information from the Inorganic Crystal Structure Database (ICSD) [10].
[10] ICSD, Inorganic Crystal Structure Database, http://icsd.ill.eu/icsd/index.php, 2014
Lide: CRC Handbook of Chemistry and Physics: a Ready-Reference Book of Chemical and Physical Data. (85th, CRC Press, Boca Raton USA, 2004)

Likewise, DFT calculations predicted the structure of tannin with smaller HOMO-LUMO gap in the condense tannin.
It has huge molecular and complex structure that is an astringent bitter [8].
We also study the structure and property of tannin using DFT electronic structure calculations to search for interesting functional group in different bound in tannin.
In order to predict the structure property of tannins, the molecular structure was modified into different functional groups.
Then the optimized structure was subjected for vibrational analysis at the same level function.

The model structure has modelled based on three different structures, ARMAX, BJ and ARX.
ARMAX structure appeared to be best between the others structure.
Polynomials model structures Polynomials structures in discrete systems are widely used to express linear model structures.
Box Jenkin (BJ) structure is generalised form of polynomial model type, BJ structure is suitable for a model contain noises which comes up from measurement disturbance.
Industrial & Engineering Chemistry Research, 48(16), pp. 7540-7549

And the calcite granules had fully interconnected porous structure with approximately 20 µm of pore size.
Although coralline apatite is one of ideal bone substitutes with similar chemical composition and porous structure to human bone, there are limitations of collection quantity, shape, pore size, etc.
The structure of the starfish bone granules were observed under a scanning electron microscope (SEM, S-3400N, Hitachi Co.
Interconnected porous structure with approximately 20 µm of pore size was observed under a SEM.
Summary Starfish derived calcium carbonate was Mg containing calcite with fully interconnected porous structure.

Membrane computing (P system) is a new computing model; it comes from the research of the basic function and structure of creature’s cell membrane.
It has complex structure and multi-level.
Objects can be considered to have an atomic structure, hence, presented as letters, or to have complex structure, for instance, to be presented as strings.
In short, P system consists of three parts: hierarchical structure of membrane; the multiple set of objects; evolution rules.
Shanghai Institute of Chemistry and Chemical Engineering 2010 Annual Conference Proceedings (automated thematic), 2010

Therefore, bismuth-layered structure is believed to be produced with Nd and La substituting.
Analytical-grade Bi (NO3)3.5H2O (Sigma-Aldrich, 98%), Nd (NO3)3.6H2O (Sigma-Aldrich, 99.9%), La (NO3)3.6H2O (Sigma-Aldrich, 99%) and Ti [OCH (CH3)2]4 (Aldrich Chemistry, 97%) were used as the precursors.
Result and discussion Phase formation of bismuth-layered structure.
Therefore the stability bismuth layered structure is sustained with the addition of Nd and La.
XRD pattern of combusted powders show a single crystalline bismuth-layered perovskite structure.

Such structure is exemplified in Fig. 3.
Variety of accessible structures.
Variety of accessible structures.
Duwez: Progress in Solid State Chemistry, Vol. 3, Pergamon Press, Oxford (1966)
[77] Nanophase and nanocrystalline structures, edited by R.D.

It revealed that the three-dimensional structure and swelling ratio decreased with the increasing concentration of PS nanoparticles.
The spectra of Irgacure 2959 and synthesized HMEM displayed very closely due to the similar structure.
So, it was hard to observe a uniform network structure without reaching the swelling equilibrium.
[5] Sun S, Wu P, Journal of Materials Chemistry, 2011, 21(12): 4095-4097
[19] Zhang W, Liu Y, Zhu M, et al., Journal of Polymer Science, Part A: Polymer Chemistry, 2006, 44(22): 6640-6645

Structure determination and analysis of asphaltine before and after upgrading and viscosity reaction under the effect of additive Infrared Spectroscopy.Infrared spectroscopy is one of the methods to identify the material structure and contained functional groups.
It is the heavy component of heavy oil - this structure of asphaltine determines the macroscopic properties of heavy oil, such as high viscosity, density and so on.
Oilfield Chemistry, 25 (2):133-136(2008) [4] Dong Xigui, Lei Qunfang, Yu Qingsen.
Ind Eng Chem Proc Des Dev., 22: 660-662(1983) [6] Zhu Huaiwu: Spectral analysis on organic molecular structure[M].
Chemistry of organosulfur compound type occuring in heavy oil sands.2.Influence of pH on the high temperature hydrolysis of tetrahydrothiophene and thiophene [J].Fuel,1984,63(1):125-128.

Matsuyama, Nano-Structures & Nano-Objects, 30, 100862 (2022). doi:10.1016/j.nanoso.2022.100862
Gupta, Journal of Photochemistry and Photobiology A: Chemistry, 392, 112433 (2020). doi:10.1016/j.jphotochem.2020.112433
Bououdina, Journal of Physics and Chemistry of Solids, 108, 61–75 (2017). doi:10.1016/j.jpcs.2017.04.002
Viswanath, Nano-Structures & Nano-Objects, 19, 100322 (2019). doi:10.1016/j.nanoso.2019.100322
Choudary, Journal of Physics and Chemistry of Solids, 160, 110298 (2022). doi:10.1016/j.jpcs.2021.110298