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Results show that the as-synthesized ZnO powders show well crystalline with hexagonal crystal structure and purity without any other impurities and the particle sizes are about 50~70nm calculated by the Scherrer formula.
Directly using of the propellant chemistry criterion the stoichiometric redox reaction can be expressed as equation (1) and equation (2) [11].
The (002) peak position of ZnO powder are invariability as the ratios of urea to glycine change, as shown in Fig. 4(b), because the as-synthesized powders possess perfect crystal structure without any other impurities.
The as-synthesized ZnO powders show well crystalline with hexagonal crystal structure and are pure single ZnO powders.

The structure change of lignin-carbohydrate complexes (LCC) in industrial alkali lignin was also studied.
So did the structure of lignin.
After treated by xylanase, the structure of LCC was broken by xylanase.
Pizzi (Ed.), Wood Adhesives: Chemistry and Technology Vol.1, Dekker, New York (1983), p. 247

Alkaloids from Penicillium oxalicum, a Fungus Residing in Acrida cinerea Bang Xua, Kun Zoub and Fan Chengc, * Hubei Key Laboratory of Natural Products Research and Development, College of Chemistry and Life Science, China Three Gorges University, Yichang 443002, P.
Their chemical structures were determined on the basis of spectroscopic data and chemical evidence.
Introduction Numerous natural products with novel structures and distinct biological activities have been discovered as the secondary metabolites of insect-derived microbes [1].
Endophytic fungi of insects are sources of secondary metabolites with interesting chemical structures (Alkaloids, quinones, saponins, terpenoids, and cyclic peptides) and significant bioactivities.

Hightemperature conditions instigate physical alterations and chemical reactions in concrete, which progressively breaks down the gel structure of cement.
GEO40 displayed a denser matrix structure than GEO20 and GEO60 with minor cracks.
Also, as an alternative to OPC-based concrete for the future of sustainable construction that has to adopt eco-friendly and fire-resistant concrete structures.
Davidovits, Geopolymer: Chemistry & Applications, fifth ed., Institut Géopolymère, SaintQuentin, France, 2020
Lu, Effect of Na/Al on formation, structures and properties of metakaolin based Na-geopolymer, Constr.

Plastics are poor conductors of heat due to the electronic structure of the macromolecules of which they are made off.
It was reported that the amorphous structure of PC was transformed into a different metastable amorphous structure under the influence of tetrahydrofuran (THF) as a polar solvent.
The metastable amorphous structure retained on the nanoparticles has a new Tg which was lower than the normal Tg and these types of structures have been crystallized by a short annealing treatment at 120°C during 24 hours.
Saibel, Tempering stresses in an infinite glass plate, Glass Physics and Chemistry. 2 (1961) 137-140. [12] E.
Meares, Polymers: Structure and BuIk Properties., Van Nostrand Reinhold Company, London, 1971. [32] B.

Palmisano, Photocatalysis: a promising route for 21st century organic chemistry, Chem.
Industrial & Engineering Chemistry Research, 45 (8) (2006) 2558-2568
Progress in Solid State Chemistry, 32(1-2) (2004) 33-177
Altman, Surface structure of anatase TiO2(001): Reconstruction, atomic steps, and domains.
Coordination Chemistry Reviews, 186 (1999) 373-384

Formation of Antithermal Shock Composite Membrane on Aluminum Alloy through Anodic Oxidation Liwei Zhang1,b, Jida Chen1,a, Bin Xie1, Zhiping Qiu1, Juan Bu1, Na Zhang1 1College of Chemistry & Chemical Engineering, Chongqing University, Chongqing, 400044,China achencqu@cqu.edu.cn, bzhangliwei913@163.com Keywords: Anodic Oxidation, Composite Membrane, Antithermal Shock, Breakdown Voltage.
Structure and composition characterization: the structure and components of membrane were characterized through FEI-SEM (FEI Nova 400 nano SEM，FEI Hong Kong Co., LTD).
The pattern of traditional anodic oxidation membrane（Al2O3）shown in Fig.2.b is a regular pore structure.
The structure of multilayer maybe resulted in the organic polymer entry into membrane during the process of anodic oxidation.
It might be resulted from lower hardness of polymer and multilayer structure of membrane.

Chloride is not the only main cause of corrosion of reinforced concrete structures in seawater environment.
Microorganisms, such as bacteria and microalgae, in the seawater can induce microbiologically influenced corrosion (MIC) that leads to degradation of the concrete structures by formation of biofilm on the metallic surface.
While microalgae induced corrosion on welds joints or the structures in a massive North Sea oil drilling platforms [3].
Xu: Industrial & Engineering Chemistry Research Vol 45 (2006) p. 3559 [11] M.

The barrier and oil-resistance properties of direct fluorination of HDOE were unveiled from molecule structure.
The HDPE is applied as the outermost layer of multi-layer structure to ensure the processing property and the impact resistance in low temperature.
The following is to reveal the barrier and oil resistance through the structure of fluorinated HDPE.The molecular framework of HDPE is a zigzag carbon chain, which is surrounded by hydrogen atoms.
Journal of Fluorine Chemistry 2005, (126):251-263 [4] A.P.Kharitonov.

The chemical structure of copolymer was characterized by means of FTIR and NMR.
There were many literatures in which the HRP/H2O2 was used as catalyst to prepare new copolymer with special structure using monomer such as phenols and anilines [1-4].
Application experiments were carried out by using the copolymer as tanning agent and retanning agent, and it can enhance the physical properties and fullness of leather by adsorbing or filling in the collagen fibers [5].The chemical structure of the copolymer GA-SHBS was characterized by FTIR and NMR.
The chemical structure of graft copolymer were characterized by FTIR and NMR.
Lu, The structure and action mechanism of HRP, Chemistry of life. 25 (2005)33-36