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(2) It is known that in filled polymer composites the polymer structure is formed under the influence of the filler surface and the mechanism of interfacial interaction is complex and not fully understood.
Barabash and others, Research of the intramolecular interactions and structure in epoxyamine composites with dispersed oxides.
Barabash, The acid-base interaction role in the processes of the filled diane epoxy resin structuring, Chem. and Chemical Technology, 12(2) (2018) 188–195
Hungarian Journal of Industry and Chemistry. 45(1) (2017) 61–66

In vivo Evaluation of Chelate-setting Cement Fabricated from Hydroxyapatite Including Bone Minerals Using a Rabbit’s Tibia Model Mamoru Aizawa1,a*, Yuki Chibu1, Kohei Nagata1, Toshiisa Konishi2, Ken Ishii3, Haruki Funao3, Yoshiaki Toyama3, Morio Matsumoto3 and Michiyo Honda4,b 1Department of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki, 214-8571, Japan 2Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, Okayama, 700-0082, Okayama, Japan 3Department of Orthopedic Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan 4Organization for the Strategic Coordination of R esearch and Intellectual Property, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki 214-8571, Japan a,*mamorua@isc.meiji.ac.jp, bmichiyoh@meiji.ac.jp Keywords: Calcium-phosphate cement, Hydroxyapatite,
Thus, the biological apatite has lots of strains and defects with nano-scale sizes in the crystal structure.
This is reason why that the carbonate ions was substituted with PO43- ions in the HAp crystal structure.
As the bone HAp contains CO32- and Mg2+ ions into the apatite structure, the solubility of the bone HAp cement may be higher than that of pure HAp one [15].

It’s molecular structure is: In the mid-1920s, parabens were first used as antimicrobial preservatives in pharmaceutical products.
The principle and structure of the adiabatic calorimeter were described in detail elsewhere [8, 9].
The structure and principle of the calorimeter have been described previously in brief [11, 12].
Sun: Computers and Applied Chemistry Vol.20 (2003), p. 265 [10] D.

N/P is the ratio of soluble inorganic nitrogen (DIN) and the active phosphate (DIP), Nutritive salt’s level and structure plays a very important role in the growth of phytoplankton.
The proportion of nutritive salt structure is more reasonable, it also reflect that the artificial reefs plays a role in optimizing nutritive salt structure.
[2]China National Standardization Management Committee,General Administration of Quality Supervision,Inspection and Quarantine of People's Republic of China.method of standard of marine survey ,part 4:Seawater chemistry factor survey(GB/T 12763.4-2007)Bei Jing:China Standards Press. 2008.

At high magnification, as shown in an inserted image, the CHAp particles are composed of fibers and exhibit a porous structure similar to the structure of human bones.
This porous structure facilitates the transport of blood and protein, while also serving as a channel for drug delivery and promoting rapid bone regeneration.
Hydroxyapatite Coating of Titanium Implants Using Hydroprocessing and Evaluation of Their Osteoconductivity, Bioinorganic Chemistry and Applications, 2012 (2012) 1-7

Synthesis of biodiesel from castor oil catalyzed by cesium phosphotungstate with the assistance of microwave Hong Yuan1, a, Qing Shu2,b 1 School of Chemistry and Chemical Engineering, Beifang University of Nationalities, Yinchuan 750021, Ningxia hui autonomous region, China 2 School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China a yuan.hong2012@yahoo.cn, b shuqing@tsinghua.org.cn Keywords: Biodiesel; Cesium phosphotungstate; Microwave radiation; Castor oil Abstract.
Among of these Keggin-type heteropoly acids, 12-tungstophosphoric acid (H3PW12O40), displays a Keggin structure which is comprised of an oxygen tetrahedraly coordinated heteroatom (PO4) surrounded by 12 edge-shared oxygen octahedraly coordinated addenda atoms (WO6).
It can be known from Fig. 2 that four characteristic absorption peaks were appeared at the range from 600 to 1100 cm−1 which are corresponding to the significant Keggin structure, peak at 810 cm−1 cm-1, 890 cm−1, 990 cm−1 and 1080 cm−1 are respectively attributed to the W-Oc-W, W-Ob-W, W=O3 and P-O groups [13].
Hence, it can be concluded that the Cs2.5H0.5PW12 and Cs0.5H2.5PW12 remain the Keggin structure of H3PO40W12.

The primary silicon, as hard particles, can improve the wear resistance of the alloy, however, it will significantly reduces the mechanical properties of this alloy, especially affects the improvement of its plasticity and wear resistance, even deteriorates the processing performance of the alloy because of the hard and brittle primary silicon, especially these crude x-Si shaped in thick needle flake which has severely fragmented the primary structure of alloy, and also the stress concentration can be caused by the vertex and angular parts of silicon phase.
So it is desirable to obtain refined substrate and silicon-phase structure.
Materials Chemistry and Physics, 2003, (81): 393-395
The effect of Ce on the hydrogen content and liquid structure of Al-16% Si melts.

It should be noted that the banding structure at the AS is an alternating bands between C (blue) and a) / (red /yellow) texture components.
The grain structure is almost random with an alternating weak bands of near <111> (blue/purple) and <110> (green)/<100>(red) grain orientation across the whole NG.
Glass Physics and Chemistry, 2005. 31(1): p. 27-29
Nobile, On the Residual Stress Field in the Aluminum Alloy Fsw Joints, in Experimental Analysis of Nano and Engineering Materials and Structures. 2007. p. 943-944

Due to the presence of double bond in NR structure which is easily attacked by solvents, oxygen, ozone, humidity as well as UV rays, NR is highly vulnerable to degradation [8].
Because NR possesses same structure which is can exhibit strain crystallization, all NR compounds shows proportional results on fatigue life [18] and from all NR compounds, STR 5L shows the best.
Rojruthai: Molecular Structure of Natural Rubber and Its Characteristics Based on Recent Evidence, Biotechnology - Molecular Studies and Novel Applications for Improved Quality of Human Life, Prof.
Rodger, in: Rubber compounding: chemistry and applications, chapter 1 of natural rubber and recycled materials, Taylor & Francis, USA (2004)

Stojanovic1, b 1 Center for Multidisciplinary Studies, University of Belgrade, Kneza Viseslava 1a, 11 000 Belgrade, Serbia and Montenegro 2 Faculty of Electronic Engineering, University of Nis, 18000 Nis, Serbia and Montenegro 3 Institute of Chemistry, Technology and Metallurgy, 11000 Belgrade, Serbia and Montenegro amini@ibiss.bg.ac.yu, bbiljana@ibiss.bg.ac.yu Keywords: Mechanochemical Synthesis, CaTiO3, Planetary Ball Mill.
Introduction Calcium titanate is the "found father" of a broad family of crystals with perovskite structure.
Ceramics based on materials with perovskite structure are very significant electronic ceramic materials.
Acknowledgement The Ministry of Science and Environmental Protection of the Republic of Serbia financially supported this research under Project No.1832 entitled "Synthesis of functional materials from the viewpoint of the synthesis-structure-properties-application relationship".