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XRD analysis revealed ZnO with zincite structure (Card no: 36-1451) in all films.
It crystallizes in a hexagonal wurtzite structure (zincite) with the lattice parameters of (c=5.205Å, a=3.249Å) [1].
The crystal structure and grain orientation of ZnO films were determined by X-Ray Diffraction (XRD-Rigaku Dmax 2200) with CuKα radiation.
Results and Discussion All samples were polycrystalline with zincite structure.
Rao: Materials Chemistry and Physics Vol. 64 (2000), p. 62 [4] R.W.Birkmire and E.

., Beijing 100081, China 3 Technical Institute of Physics and Chemistry, CAS, Beijing 100101, China Keywords: Ti3SiC2, α-SiAlON, layered material Abstract.
Three-layered structure of Ca-α-SiAlON/Ti3SiC2/Ca-α-SiAlON was formed by stacking the tapes and densified by hot pressing.
In this paper, three-layered structure of Ca-α-SiAlON/Ti3SiC2/ Ca-α-SiAlON has been fabricated with the prospect of higher fracture toughness and good reliability.
And the green sandwich structure of Ca- α-SiAlON/Ti3SiC2/Ca-α-SiAlON was obtained * Corresponding author.
It shows that hot pressed Ti3SiC2 ceramic has a layered structure, which contributes to the damage resistance of this material.

Azone is a well-documented penetration enhancer (Hadgraft et al., 1993) [7].This substance appears to act by reducing the diffusional barrier of the stratum corneum by inserting itself into the structured lipids located in the intercellular channels [8].
This may be due to the different molecular structures of Human-like collagen and gelatin.
For example, Human-like collagen has its own integral molecular structure (which is the foundation of biological function), while gelatin, as a mixture of peptides, is a collagen hydrolysis fragments with uncertain structural.
Therefore, the biological functions of gelatin have been damaged during the hydrolysis process when the molecular structures are reconstructed.
Howel, Food Chemistry 101, 386–391(2007)

Research on Removal of Boron from Metallurgical Grade Silicon by Si-Al Alloying Yu Liu1,2,3,a, Dongliang Lu1,2,3, Yuyan Hu1,2,3, TaoLin1,2,3, Yanhui Sun1,2,3, Hongyu Chen1,2,3,b, Qianshu Li1,2,3 1School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. 
(a) (b) Fig.2 Metallographic structure of Si-Al alloys (a) Si-Al alloys with layered structure (b) flaky silicon Microstructure Analysis and Characterization.
As is shown in Figure 2 (a), there is a distinct layered structure – the upper are flaky Si (mixed with a small amount of Si-Al eutectic); the lower are small particles of Si-Al eutectic.
Meanwhile, the upper sheet Si were observed, as is shown in Figure 2 (b): the sheet contains a dendrite structure.
Figure 3 showed a dense and smooth surface of silicon with a small amount of aluminum impurity; Figure 4 indicated the lower Si-Al alloys’ surface has a structure of roughness, bumps and holes, containing a large number of Ti , K, Fe impurities and other substances[7].

Study on Curing reaction and Mechanical Properties of Liquid Crystalline p-SBPEPB/BPAER/MeTHPA System Li Huo1*a, Yonggang Du2b, Yongmei Wang 1C 1 Department of Biochemistry, Baoding University, Baoding 071000 P.R.China 2 Department of Applied Chemistry, Hengshui University, Hengshui 053000 P.R.China ahuolichenchen@sina.com, b dyg2166@sina.com, C wangyongmeibd@163.com Keywords: liquid crystalline; epoxy resin; modify; curing kinetics; mechanical properties Abstract.
Recently, it has been recognized that these properties of epoxy resins could be greatly enhanced if liquid crystalline structures are incorporated into the epoxy networks, so the cure kinetics of LCER is important and there is the little investigation on co-cure kinetics about bi-components epoxy resin until now [3-4].
The molecular structure of p-SBPEPB is shown in Scheme 1.
The morphological structure of the zone fracture was investigated by scanning electron microscope (SEM, KYKY-1000B, Beijing, China) Results and Discussion Curing Behavior and Activation Energy Fig.1 (a) and (b) show the DSC curves for p-SBPEPB/BPAER/ MeTHPA recorded which the heating rates is 10℃/min.
(d) has an island structure which the self small congregation of LC molecules will form dimple fracture in the material and improved though.

Table 1 Peak identification of FTIR spectra of PF Wavenumbers (cm-1) Functional group 3400 O-H stretching of phenol group 3100-3800 C-O stretching ＞3000 Aromatic structure ＜3000 Aliphatic structure 1604 C=O of carbonyl structure 1506 C-C aromatic ring stretching 1443 C-H bending of aliphatic bridge structure 1227 C-O stretching of diphenyl ether structure 1100 C-O stretching of phenol group 822 Benzene ring substitution 760 Benzene ring substitution Fig.1.
Weast CRC: The Handbook of Chemistry and Physics. 65th ed.

Results and Discussion Structure of K2O·CaO·4B2O3·12H2O：Sm3+.
As shown in Fig.1,due to Sm3+adding quantity is little, the structure of K2O·CaO·4B2O3·12H2O：Sm3+ is similar to K2O·CaO·4B2O3·12H2O, belonging to orthorhombic with space group P212121, Z = 4, its unit cell parameters a=16.59700（Å）,b=12.46900（Å）,c=11.56900（Å）.
To further confirm the coordination surroundings of B-O in the K2O·CaO·4B2O3·12H2O：Sm3+structure, the IR spectra are measured at room temperature and shows in Fig. 2.
(a) (b) Fig.3 Micro-photographs of K2O·CaO·4B2O3·12H2O（a） and K2O·CaO·4B2O3·12H2O：Sm3+（b） C (c) (d) Fig.4 SEM Photographs of K2O·CaO·4B2O3·12H2O（c）and K2O·CaO·4B2O3·12H2O：Sm3+（d） The micro-photographs and SEM photographs of the product are given in Fig.3 and Fig.4 which show the hexagonal structure clearly as a single crystal and the bulk of single crystal.
The synthesis of rare earth borates expanded the rare-earth borates structure chemistry.

Both cellulose and ash content in absolute dry specimen was calculated with the same formular structure as for lignin.
Gibb, Plastics are forever, Nature Chemistry, 2019, Vol 11, 394-395
Suh, Degradation Rates of Plastics in the Environment, ACS Sustainable Chemistry & Engineering, 2020, 8(9), 3494-3511
Graça, Suberin: The biopolyester at the frontier of plants, Frontiers of Chemistry, 2015, 3, 62
Sams, Secondary Metabolite and Mycotoxin Production by the Rhizopus microsporus Group, Journal of Agricultural and Food Chemistry, 2005, 55, 1833-1840

Particularly, the effect of oxidation assist, i.e., O2 gas or oxygen radicals, on the defect structure of the resultant films was examined.
The examination indicated that the defect structure of undoped ZnO was not affected by the oxidation assist, whereas the properties of Al-doped ZnO obviously varied with the method of oxidation assist.
These results indicate that the strong oxidation activity of radicals caused a change in the defect structures in the Al-doped ZnO films.
CONCLUSION From the viewpoints of structure, electrical properties, and diffusion coefficient, undoped ZnO films grown by PLD has been shown to be close to the equilibrium state, unlike a ZnO thin film grown with another technique.
Chacka: Journal of Solid State Chemistry, 15 (1975) 261-270

The change of the structure during annealing is seen from the Raman spectra.
The film with the layered structure is obtained at the low oxygen conditions.
The change of the structure during annealing is seen from the Raman spectra (see Fig. 3).
Core-shell structures with the Co3O4 outer layer are seen.
Acknowledgments Raman studies were carried out using the "Unique Scientific Installation Physics, Chemistry, and Mechanics of Crystals and Thin Films" (Institute for Problems in Mechanical Engineering of the Russian Academy of Sciences, St.