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Chemistry potential difference (concentration difference) was an important influence as well as a main driving force extracting process.
Chemistry potential difference was obvious for extract rate.
The cavitation, agitation, thermal effect and mechanical effect of the ultrasonic wave were utilized to damage plant’s cell structure to carry the plant extract out.
Food Chemistry ,2007;103 : 121–129 (In Chinese)
Food Chemistry, 1998, 61(12): 201-206

Jesionowski, Evaluation of the photocatalytic ability of a sol-gel-derived MgO-ZrO2 oxide material, Open Chemistry, 2017, p. 7
Shang, Strong adsorption of arsenic species by amorphous zirconium oxide nanoparticles, Journal of Industrial and Engineering Chemistry 18(4) (2012) 1418-1427
Shang, As(III) and As(V) Adsorption by Hydrous Zirconium Oxide Nanoparticles Synthesized by a Hydrothermal Process Followed with Heat Treatment, Industrial & Engineering Chemistry Research 51(1) (2012) 353-361
Tao, Preparation of hollow magnetic porous zirconia fibers as effective catalyst carriers for Fenton reaction, Journal of Materials Chemistry A 6(26) (2018) 12298-12307
Hosseini, Core-shell zirconia-coated magnetic nanoparticles offering a strong option to prepare a novel and magnetized heteropolyacid based heterogeneous nanocatalyst for three- and four-component reactions, Arabian Journal of Chemistry 13(1) (2020) 227-241

Wang, et al: submitted to Journal of Organic Chemistry (2000)
Baguley, et al: submitted to Journal of Medicinal Chemistry (1990)
Cain, et al: submitted to Journal of Medicinal Chemistry (1984)
Begon: submitted to Journal of Clinical Chemistry (1988)
Campbell, et al: submitted to Journal of Clinical Chemistry (1983)

Through a comparison of the sintering process, the interface structure was observed via scanning electron microscopy, which found that secondary sintering is conducive to improving the density of Al2O3/Al cermet.
The performance improvement of Al2O3-based cermets is mainly achieved by designing a reasonable interface structure.
However, alumina ceramics prepared by powder coating method overcomes the disadvantages of powder metallurgy method, makes the structure of the cermet more uniform, and improves its performance.
Using the interaction of electrons and substances, it is possible to obtain information on various physical and chemical properties of the measured sample itself, such as morphology, composition, crystal structure, electronic structure, and internal electric or magnetic fields.
Through comparing the sintering process, the interface structure was observed via scanning electron microscopy, which found that secondary sintering is conducive to improving the density of Al2O3/Al cermet.

Moreover, spheric CB particles may help reduce the structure inhomogeneity in the nanocomposites.
Results and discussion Micro-structure.
During aging, the rubber chains will be broken or crosslinked by heat, oxygen or ozone, resulting in the change of molecular structure.
Hamed: Rubber chemistry and technology, 524-533(2000)
Zhang: physical chemistry chemical physics, 3014-3030(2010).

Research on LB Films of Two Schiff Base Compounds with Alkyl Chains and Different Azobenzene Substituted Groups Jingxin Zhou1, Tifeng Jiao1,2,a, Xuhui Li1 and Fengyan Wang1 1Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004, China 2College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, 325027, China atfjiao@ysu.edu.cn Keywords: Schiff base, Coordination, Azobenzene, Langmuir-Blodgett films, Supramolecular assembly, Spectral measurement.
The structures and abbreviations of the final products were shown in Fig. 1, which were confirmed by 1H NMR and elemental analysis.
Chemical structures and abbreviations of both Schiff base compounds.
Based on the relative research reports [9-10], a multilayer film or three-dimensional (3D) structure could be suggested in these spreading films on Cu(II) ions subphase.
The present work may give some insight to design and character the relationship between the molecular structures and supramolecular aggregation of amphiphiles in organized molecular films.

Na2Ti6O13(n=6) has tunnel structure with Na+ coated inside, which makes perfect chemical stability.
Fig. 1 shows the crystal structures of Na2Ti3O7 and Na2Ti6O13.
Fig.1 Crystal structures of Na2Ti3O7 and Na2Ti6O13[2] Joel Ramirez-Salgado et al [2] synthesized the mixtures of Na2Ti3O7/Na2Ti6O13 by the sol-gel method using alkoxide precursors.
Solid State Chemistry,2004, 177,4508-4515
Fluorine Chemistry, 1996, 96:25-29

The structure is represented by the A2B3 formula (A=VO6, B=PO43-).
Journal of Solid State Chemistry. 135(1997): 228-134
Liu, Performance and structure of Mg2+-doped-Li3V2(PO4)3 cathode material for lithium-ion batteries, J.
Tang, Performance and structure of doped-Mg- Li3V2(PO4)3 cathode material for lithium ion batteries, J.
Chinese Journal of Inorganic Chemistry. 23(2007):1165-1168

Journal of Molecular Structure, 1201 (2020) 127184. https://doi.org/10.1016/j.molstruc.2019.127184 [5] A.
Arabian Journal of Chemistry, 9 (2016) S1584-S1589. https://doi.org/10.1016/j.arabjc.2012.04.029
Arabian Journal of Chemistry, 12 (2019) 4646-4663. https://doi.org/10.1016/j.arabjc.2016.08.009
Arabian Journal of chemistry, 10 (2017) S2234-S2244. https://doi.org/10.1016/j.arabjc.2013.07.059
Materials Chemistry and Physics, 78 (2003) 122-131. https://doi.org/10.1016/S0254-0584(02)00222-5

X-ray diffraction patterns indicated that NbHAp had a monolithic apatitic structure, although crystallite decreased as Nb content increased.
These results suggested that Nb ions were at PO4 site in crystal structure of HAp.
The crystalline of the precipitates become high by the annealing and XRD patterns of all annealed NbHAps could be identified as monolithic apatitic structure.
These results suggest that the NbHAp has apatitic structure containing Nb ions and the Nb ions are homogenously distributed in the grain.
References [1] J.C.Elliott: Structure and chemistry of the apatite and other calcium orthophosphates (Elsevier, Tokyo, 1994) [2] K.Isama, and T.Tsuchiya: Bull.Natl.Inst.Health.Sci., Vol.121 (2003) p.111 [3] T.Ohya, T.Ban, YOhya and Y.Takahashi: Ceram.Trans., Vol.112 (2001) p.47 [4] F.A.Cotton and G.Wilkinson: Advanced Inorganic Chemistry (Baifukan, Tokyo, 1994) [5] H.Sowa, H.Kaji, T.Yamaguchi, T.Sugimoto and K.Ichihara: J.Bone.Miner.Res.