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The thermogravimetric analysis is made at the Institute of Chemistry and Chemical Technology, Ulaanbaatar, Mongolia.
These structures will break and fragment at every temperature interval.
Hemicellulose is a branched chain-structure from groups of saccharides.
Cellulose is differs from the hemicellulose by its unbranched structure.
In this area less reactive lignin and carbon structure are burning [16].

In this paper, Fe3O4/PPy microspheres with a well-defined core‒shell structure have been prepared through an interfacial polymerization approach without surfactant.
It is well recognized that Fe3O4/PPy spheres with a core–shell structure can be prepared by an interfacial polymerization method [5,8,10,11].
Recently, a surfactant-free synthesis of core‒shell structured Fe3O4/Polyaniline and Fe3O4/PPy microspheres has been designed by our research group [8].
Results and discussion Structure, composition, and morphology Fig. 1 shows the XRD patterns of the samples.
The TEM image of composite spheres exhibits a well-defined core‒shell structure (Fig. 3d).

Nondestructive testing (NDT) is a technique to determine the integrity of a material, component or structure.
The dynamic modulus of elasticity of concrete is related to the structural stiffness and deformation process of concrete structures, and is highly sensitive to the cracking.
Introduction Nondestructive testing is a technique to determine the integrity of a material, component or structure.
The dynamic modulus of elasticity of concrete is related to the structural stiffness and deformation process of concrete structures, and is highly sensitive to the cracking.
Roy: Fly ash and silica fume chemistry and hydration, ACI SP-114, pp.117-138 (1989) [4] S.

The crystalline and chemical structures of nano-graphene before and after magnetic immobilization were identified using X-Ray diffraction.
The morphological structure of magnetic composite was identified by using Transmission Electron Microscope (TEM).it was carried out to investigate the precipitation of nano-magnetite onto the Nano-graphene sheets.
Result and Discussion Properties of Graphene and MGNCs: The crystalline structure of matrices were identified with XRD.
[5] Ming Zhang , Danni Lei , Xiaoming Yin , Libao Chen , Qiuhong Li , Yanguo Wang and Taihong Wang, "Magnetite/graphene composites: microwave irradiation synthesis and enhanced cycling and rate performances for lithium ion batteries," Journal of Materials Chemistry, no. 26,2010, pp. 5538-5543, 2010
[7] Yucheng Dong , Kam Chuen Yung , Ruguang Ma , Xia Yang , Ying-San Chui , Jong-Min Lee , Juan Antonio Zapien, "Graphene/acid assisted facile synthesis of structure-tuned Fe3O4 and graphene composites as anode materials for lithium ion batteries," Carbon, vol. 86, pp. 310-317, 2015

The research aims: combining with extraction of the total flavones from hippophoe leaves, the effects to chemical structure of active components with HI ultrasonic radiation are deeply explored.
The research methods: ①through the theory and experiment research, the characters of HI ultrasonic energy ere introduced, and then ②the chemical structures of total flavones from Hippophoe leaves extracted with ultrasound are tested by means of HPLC.
With the help of HPLC liquid chromatography, the chemical structures of active ingredients in extractions were detected.
It is known with research result that changing the sound field structure or acoustic parameters can change the ultrasonic cavitation output.
Effect of ultrasound irradiation on solvent extraction process, Journal of Industrial and Engineering Chemistry, 15 (2009) p919-928

Most of the structures, parts of machines in the process of operation are subjected to the action of cyclically changing loads, such changes can be judged by the fatigue of the metal.
In addition to the influence of mechanical stresses during the service, corrosive environment affects metal structures, machine parts, which leads to the process of gradual accumulation of damage.
To approximate the tests to the actual operating conditions of metal structures two different types of loading are used: loading with a specified load amplitude - soft loading; loading with a specified deformation amplitude - rigid loading.
Kuzeev, Evaluation of stressed state of coker reactor shell with plastic deformation, Chemistry and Technology of Fuels and Oils, 22 №7 (1986) 352-355
Selsky, The influence of dislocation structure and intergranular boundaries on the character of fracture in the low carbon steel St3, Materials Science Forum, 207-209 (PART 2) (1996), 685-688

The results showed that the matrix of C/SiO2 composite with a periodical structure formed by the hexagonal stacking of SiO2 microspheres.
The SiO2 matrix with a periodical structure has been formed by the SiO2 microspheres’ self-assembly process under the centrifugal force field.
It can be found that the SiO2 microspheres tightly pack in hexagonal stacking to form a periodic structure and amorphous carbon distribute in the gap formed by SiO2 microspheres.
Once the sucrose’s concentration increase, it can be found that the amorphous carbon contact to each other to form a 3D network structure.
Fan, Microwave absorption properties of Fe@Al2O3 nanoembedments prepared by mechanosynthesis, Materials Chemistry and Physics, 130 (2011) 615-618

Introduction Cellulose nanocrystals (CNCs) have a rigid rod structure and a high aspect ratio with high degree of hydroxyl side groups [1].
The TEM image (figure 1b) indicate rod-like or needle-like structures of CNCs was obtained.
The reduction can be contributed to the prolonged hydrolysis, which lead to subsequent degradation of the crystalline structures during the reaction [29].
Youngblood, Cellulose nanomaterials review: Structure, properties and nanocomposites, Chem.
Zain, Conversion of lignocellulosic biomass to nanocellulose: Structure and chemical process, Sci.

The surface parts of concrete building structures /Fig.1/ are at most exposed to changes in temperature and moisture.
If the volume changes in concrete which are the result of their thermal and moisture changes cannot be visible there appears the stress in affected sections of the surface parts of concrete structures.
Concrete is always found in structures which are in contact with the surrounding medium and there appears more or less intensive interaction between exterior media components and concrete components.
Description of the above chemical-physical mechanical reactions and is referred to as the chemistry corrosion.
Fig. 2 Cause of corrosion on main bars in reinforced concrete structures.

Figure 2 shows the crystal structure model of ordered K2NiF4 type K2NbO3F.
Many deviations of crystal structure and ferroelectric properties between the nano-powders and the bulk ceramics are well known phenomenon.
The Raman spectra are known to be sensitive to the local structure of a given atom.
Although the Nb-O polyhedra structure of nanosheet in the colloidal solution are similar to that of the bulk KNbO3, the local structure is slightly different from the bulk material.
(a) (b) (c) Fig. 2 Crystal structure model of ordered K2NiF4 type K2NbO3F.