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Study on Thermal Degradation Characteristics of Pre-treated Paraffin Hu Songqia, Wu Guanjieb (National Key Laboratory of Combustion, Flow and Thermo-structure, Northwestern Polytechnical University, Xi’an 710072, China) a: pinecore@nwpu.edu.cn, b: 309431529@qq.com Key words: Paraffin, Thermal Analysis, Pre-treated Method, Heating Rate, Kinetic Parameters Abstract: The paraffin, pre-treated paraffin and hydroxyl-terminated polybutadiene (HTPB) were measured by Differential Scanning Calorimetry (DSC) and Thermogravimetry (TG) in different conditions.
The experimental samples include paraffin, pre-treated paraffin and HTPB, and the pre-treated paraffin is made as follows[9]: acidify the paraffin molecules with p-toluenesulfonic acid to make them contain the structure -COOH, and make esterification reaction with HTPB, and then the pre-treated paraffin can be made. 2.2 Experimental Program These three experimental samples should be put into the crucibles with covers to seal respectively, and then thermal analysis should be made by TG and DSC methods under atmosphere of air, nitrogen and oxygen.
Analytical Chemistry, 1957,29(11):1702-1706

Polynitropyrazole, whose structure like benzene owing to the higher electronegativity of its nitrogen atoms, is a kind of novel insensitive explosive with excellent performance[4].
In addition, the factor F depends solely upon the chemical composition and molecular structure
[6] D Ghule Vikas: Physical Chemistry, 2012, 116: 9391-9397

This model is a reference used to illustrate the structure and the sodiation process of hard carbon.
Hard carbon can be obtained by thermal in the field of electrochemical energy storage, in particular batteries [53,54] or chemistry processes [55] from organic pure substances or precursors of biomass derivatives.
Xu, Long cycle life and high rate sodium-ion chemistry for hard carbon anodes, Energy Storage Mater. 13 (2018) 274–282
Franklin, The structure of graphitic carbons, Acta Crystallogr. 4 (1951) 253–261
Harris, New perspectives on the structure of graphitic carbons, Crit.

Characterization of the crystal structure was done using an X-ray diffractometer.
The Ba0.6Sr0.4Fe11.5Al0.5O19 sample (hard magnetic) has a hexagonal structure, while the NiFe2O4 (soft magnetic) has a cubic structure.
These results were obtained from the GSAS (General Structure Analysis System) program and can be seen in Table 1.
The hexagonal P 63/mmc crystal structure of BaFe12O19 hexaferrite [37, 38] and the cubic crystal structure F d -3 m of spinel ferrite NiFe2O4 [39, 40] according to JCPDS card 54-0964 were found to have similar results by other studies.
Hajdúchová, Structural, Magnetic, Dielectric, and Electrical Properties of NiFe2O4 Spinel Ferrite Nanoparticles Prepared by Honey-mediated Sol-Gel Combustion, Journal of Physical and Chemistry of Solids, Vol. 107, 2017, Pages 150-161; http://dx.doi.org/ 10.1016/j.jpcs.2017.04.004

It was shown that the addition of aluminum affects the lattice structure formed, with the lattice from the FKK + α-FeCr (CrFe1.5MnNi0.5) structure to the FKK + TKK (Al0. 3CrFe1.5MnNi0.5) structure and finally to BCC (Al0.5CrFe1.5MnNi0.5) lattice structures with increasing Al content, as shown in Fig. 3 [12].
Variation of the lattice structure of a high-entropy alloy as a function of Al content [13].
These alloys can store hydrogen with various crystal structures, including body-centered cubic (BCC), face-centered cubic (FCC).
One of the first studies investigated the MgZrTiFe0.5Co0.5Ni0.5 alloy, which resulted in an FCC structure, but also tried the equimolar MgVAlCrNi alloy, which resulted in an alloy with a BCC structure.
Jena, “Materials for hydrogen Storage: Past, present, and future,” The Journal of Physical Chemistry Letters, vol. 2, no. 3 (2011) pp. 206–211 doi: 10.1021/jz1015372

The chemical structure of dye was given in Fig. 1.
Chemical structure of Acid red R Effect of Contact time on Biosorption.
Solution pH also influences both the cell surface dye binding sites and the dye chemistry in water.

The pore structure, in form of inter-splat voids, intra-splat microcracks and other, coarser and more globular voids corresponding to stacking defects, has a strong influence on coating properties.
The results associated to the as-sprayed coatings are due to the lamellar structure feature with the limited interface bonding which dominates very likely the electrical conductivity of plasma sprayed coatings.
Roosen: Materials Chemistry and Physics, Vol. 81 (2003) p. 134 [10] Y.

It were applied in engine oil, antirust oil, gear oil, metalworking fluid, automotive grease, industrial grease, and other fields according to different structures [1-2].
Some special structure sulfonate (mainly sodium and calcium salts), were found that they have very good extreme pressure property in metal working fluid since the 1980s.
Because the chemical reaction activation energy is a measure of the difficulty degree of chemistry reaction, in general, the smaller activation energy, the more easily reaction, otherwise, response to the more difficulty.

Subba Rao3, c 1, 2Department of Metallurgical and Materials Engineering, Visvesvaraya National Institute of Technology, Nagpur 440010, Maharashtra, India; 3Water and Steam chemistry Division, Bhabha Atomic Research Centre Facilities, Kalpakkam 603102, Tamilnadu, India aadeebafkhan@gmail.com, bappatil14@gmail.com, c tsrmicro@gmail.com Keywords: Corrosion, Cu-10Ni alloy, ZnS, Seawater and Sulfide.
This outer film is porous in nature and has more defective structure than Cu2O film.
Schleich, Typical failures of CuNi 90/10 seawater tubing systems and how to avoid them, Engineering Structures. 0049 (2004)

Introduction Ecological stoichiometry is a science that studies the energy in biological systems and the balance of chemical elements (such as carbon, nitrogen and phosphorus and so on); it is a new direction of the ecology, biochemistry, soil chemistry and other research areas; it also provides a new train of thought for the research on soil-plant interactions and carbon nitrogen phosphorus cycle [1-2].
Studies have shown that [23-25], the change pattern of nitrogen phosphorus content in plant and the N: P ratios are same between organs (leaf, stem reproductive structures and root) and in different organs, but there are different performances in different organs.
However, because of the different habitat, vegetation life type, succession stage and the intensity human disturbance, the nutrient restriction structure of nitrogen and phosphorus is different in different ecosystem.