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Exothermic chemical reaction may be modelled either by a single-step or multistep kinetics.The concept of the mathematical apparatus for one-step kinetic model in chemistry has a successful history in describing many kinds of flame structure [10].
For large activation energy, the one-step kinetic model is often simple enough to provide explicit solutions that describe phenomena such as temperature structure, stability, ignition, and extinction.
Model Problem We consider a two-step exothermic reaction in a cylindrical solid of combustible materials with temperature dependent pre-exponent factor and radiative heat loss as shown in figure (1).From simple chemistry sequential reaction, a two-step thermal decomposition process of a solid can be expressed as A®B®C

The IPC of this kind are of interest of not only water-soluble polymers physical chemistry, but also to related fields of science.
The potentia of application of interpolymer complexes of different structure in biomimetics (bionics) are discussed [7-9].
References [1] Takeo Ikawa, Koji Abe, Kenji Honda, Eishun Tsuchida, Interpolymer complex between poly(ethylene oxide) and poly(carboxylic acid), Journal of Polymer Science: Polymer Chemistry Edition, Vol. 13 (1975), Issue 7, p. 1505–1514 [2] Yunbo Li, Haixia Li, Xudong Chen, Fangming Zhu, Jin Yang, Yubin Zhu, Complexation of poly(acrylic acid) and poly(ethylene oxide) investigated by enhanced Rayleigh scattering method, Journal of Polymer Science Part B: Polymer Physics, Vol. 48 (2010), Issue 16, p. 1847–1852 [3] Vitaliy V Khutoryanskiy; Georgios Staikos Hydrogen-bonded interpolymer complexes: formation, structure and applications, Singapore ; Hackensack, NJ : World Scientific, (2009), p. 366 [4] Robert Langer, Nicholas A.

The chemical structure of a typical triglyceride of palm oil is shown in Fig. 1.
Fig.1 Chemical structure of a typical palm oil triglyceride Unsaturated fat were the component of interest in epoxidation of VO due to the presence of olefinic bonds required in the reaction.
Ethanol (95%) from J.Kaolin Chemicals, and vinyltrimethoxysilane (VTMS) from Aldrich Chemistry.
Neil Furlong, Surface Chemistry of Silica Coatings of Titania, Commonwealth Scientific and Industrial Research Organization, Division of Chemicals and Polymers, 2006, pp. 692

Modification of PEDOT:PSS Surface by RGD Peptide Šárka Tumová1*, Romana Malečková1, Vojtěch Enev1, Stanislav Stříteský1, Jan Víteček2, Martin Vala1, Martin Weiter1 1Faculty of Chemistry, Brno University of Technology, Purkyňova 464/118, 612 00 Brno, Czech Republic 2Institute of Biophysics of the Czech Academy of Sciences, Královopolská 135, 612 65 Brno, Czech Republic *xctumovas@fch.vut.cz Keywords: PEDOT:PSS, RGD peptide, sulfo-SANPAH, biocompatibility, contact angle Abstract.
The reduction of the hydrogen percentage content may be attributed (i) to the elimination of the water molecules from the system after RGD peptide conjugation and (ii) to the ethylene glycol modification, which led to the elimination of the counter ions PSS out of the structure.
The sample that underwent the process of RGD conjugation contained nitrogen atoms within its structure while the original PEDOT:PSS did not contain this element.
The work of PhD students Šárka Tumová and Stanislav Stříteský was supported by the Faculty of chemistry BUT under project No.

The X-ray diffraction (XRD) pattern revealed a face-centered cubic (FCC) structure with crystallite.
UV-visible spectroscopy is also utilized to provide information regarding the size, structure, stability, and aggregation of nanoparticles [43].
Several intense peaks were observed at 2θ values, which were indexed to (101), (111), (200) and (220) pure silver based on the face-centered cubic structure (FCC) and structured metallic silver (JCPDS, no. 04-0783) for Ll-AgNPs.
While, Ma –AgNPs, the number of Bragg reflections corresponding to the (111), (200), and (220) sets of lattice planes are observed, where these peaks are matched with the face-centered cubic structure (FCC) structured metallic silver (JCPDS, No. 04-0784).
Bousalem, ''Mentha aquatica leaf extract mediated phytosynthesis of silver nanoparticles: antioxidant, catalytic and anti-microbial activity'' New Journal of Chemistry, 47(29), (2023): 13841-13854

Results and Discussions Morphology and structure of grown Ca silicide films.
Therefore, to analyze the predominant contribution, we considered the data of optical spectroscopy, which could indicate the nature of the absorption and the type of structure.
Additional information on the structure of grown films should be obtained by the transmission electron microscopy method both in the planar image and in the cross section.
Pécz, Epitaxial relations, crystalline structure and defects in the double Si(111)/hR6 CaSi2/Si(111) heterostructures, JJAP Conf.
Bogorodz, Optical properties of the CaSi2/Si(111) and Si(111)/CaSi2/Si(111) heterostructures, Proceedings of the International Conference NANOMEETING-2017 "Physics, Chemistry and Application of Nanostructures.

The LLZ garnet structure has been known to have a cubic and tetragonal structure.
The cubic structure was originally achieved via doping with Aluminum [4].
In addition, aluminum doping content on LLZ structure and conductivity was investigated.
Pure and Al-doped LLZ samples were fully characterized for its morphology, structure, and thermal properties.
Chemistry of Materials Vol. 28 (2016), p. 1861

These nanosheets have a unique structure with an extremely high aspect ratio and thicknesses in the nanometer range.
The process enables us to obtain a superlattice-like structure composed of layers of A0.5BO3 and A0.5B'O3 along the c-axis.
Raman spectra was measured to investigate the local structure of the samples.
samples of Sr0.5NbO3 and Sr0.5TaO3, and that the superlattice-like structure composed of Sr0.5NbO3 and Sr0.5TaO3 is formed in the nanosheet-processed Sr0.5Nb0.5Ta0.5O3.
Shimizu et al., Chemistry Letters, 31 (2002), p.1158. [2] A.

Although Cu and Al have the same atomic structure, the significant differences of the density of phonon states lead to the thermal resistance that exists at the Cu/Al interface.
It is well known that interfaces can play a dominant role in the overall thermal transport characteristics of structures.
They found that the effects of the interface on the electronic structures of both the metal Fe and ceramic WC are mainly located within the first and second layers of the interface.
Although Cu and Al have the same atomic structure, the significant differences of the density of phonon states lead to the thermal resistance at the Cu/Al interface.
[11] Yang Fan, Liu YuWen, Ou LiHui, Wang Xin, and Chen ShengLi, Science China Chemistry 2010, pp.411–418

The sintered powder was characterized by XRD to determine the structure and phase purity.
Sample LiFe1-xGdxPO4/C (x = 0.01; 0.05; 0.07) was adopted orthorhombic crystal structure and pnma space group, and no impurities detected.
The structure of the olivine LiFePO4 is orthorhombic (Pnma space group) [6, 7], having a slight distortion of the oxygen portion forming a closed hexagonal.
Based on the Inorganic Crystal Structure Database (ICSD) number 98-009-9860, LiFePO4 has a lattice parameter value of a = 10,294 (Å); b = 5.986 (Å); c = 4,675 (Å).
The Fourier map of the three cathodes is very similar, the electron cloud is on the right side, according to the orthorhombic structure adopted by the three cathode composits.