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Experimental results show that the addition of highly dispersed chalk affects the structure of cement stone, which is represented by low-base hydrosilicates, calcium hydrocarbonate and complex compounds that create a dense structure, which reduces the permeability of the material for corrosive media.
In construction, carbonate rocks are widely used as additives, while the influence on the structure formation processes, strength and deformability of such carbonate rocks as chalk has been little studied.
Based on the foregoing, it is assumed that the addition of highly dispersed chalk affects the structure formation of cement stone due to the formation of new compounds that compact the structure, the formation of optimal grain packing, therefore the durability and operational properties of concrete are improved.
Highly dispersed chalk Fine material Cement Fig. 4 Layout of particles of cement and highly dispersed chalk Electron microscopic studies of cement stone confirmed that the structure of cement stone is rather dense (Fig. 5).
Advances in chemistry and chemical technology.

In the reaction, the nanomaterials’ growth can be guided by surfactants, and the material turn to one dimensional structure in the stick micelle by self-assembly[6].
Results and Discussion Figure 1 is SAED analysis of the Co-Ni alloy powders and it illustrates that the products are polycrystalline structure.
As the literature[9] said, in general, the surfactant’s micelle shape is cylindrical when its concentration higher than its critical micelle concentration (cmc), while the shape change to layer structure as its concentration 10 times higher than cmc.
Many conclsions were reached after the test of their structure and properties.
[9] Shen Zhong,Wang Guoting,etal.Colloid and Surface Chemistry[M].Chemical industry press of Beijing,1997

This process could occur due to the side chains polycarboxylate groups structure features.
The structure of cement compositions (a) Cement1 and (b) Cement1+SP1 after 28 days of hardening.
The structure after 50 cycles is denser than the original, the density of cement is around 2,331 g/cm3.
Cements structures before freezing and after 50 cycles of freezing/thawing are shown in Fig.4 The figure presents the initial structure of Cement1, which is characterized by a more dense AFm phase.
Taylor, The Chemistry of cement, Moscow, 1996

However, a few weeks later, when the test castings were examined, the structure consisted of nearly perfectly shaped spheres of graphite.
The chemistry of the final iron was recorded as 3.0% C, 3.09% Si, 1.16% Mn, 0.11% P, 0.005% S [Mg-unknown], having a pearlitic/ferritic matrix, with 600 MPa tensile strength and 2% elongation [3].
Jacobs et al [10] graphite nodules nucleate heterogeneously on particles formed in the melt, and exhibited a duplex sulphide/oxide structure.
For the same chemistry and solidification cooling rate, inoculation had an expected beneficial effect.
(6) For casting conditions where the factor K is less than 0.80, less than 0.01%REEres residual levels are sufficient in final ductile iron chemistry

TiO2 usually takes form of anatase, rutile or amorphous structure in its film state [8].
The influence of argon flow on the structure and properties of TiO2 film was investigated in this work.
Therefore, the particles, including ions, atoms and clusters that form the film, have not enough energy to grow with crystalline structure.
All the annealed TiO2 films have a structure of anatase, except that some crystalline orientations are dependent on the argon flow.
Gao: Nano Titanium oxide optical catalysis materials and progress of applications.1st ed., (Chemistry Industrial Press, Beijing 2002)

The social-ecological systems have three major phases including of structures, functions and processes.
Thirdly, the social system is a combined system with multi-hierarchies structures of material and thinking.
Evolution of the Network Structures and Flows.
The complex social-ecological systems network was defined as one six-element tuple structure which denotes the comprehensive spatial structure of different kinds of units from ecosystem, social system and economic system.
Computational Biology and Chemistry.

Preparation of SnS2 thin films by chemical bath deposition Jing Lia, Yong Cai Zhangb,* and Ming Zhangc Key Laboratory of Environmental Material and Environmental Engineering of Jiangsu Province, College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China aljshan@xzit.edu.cn; bzhangyc@yzu.edu.cn; clxyzhangm@yzu.edu.cn Keywords: Tin disulfide; Thin films; Chemical bath deposition; Optical property Abstract.
The structure and optical absorption property of the as-prepared SnS2 thin films were characterized by means of Raman, FESEM, surface profiler and UV–vis absorption spectra.
The structure and optical property of the as-prepared SnS2 thin films were characterized by Raman, FESEM, surface profiler and UV–vis absorption spectra.

This process gave the structure composed of metal matrix and pores.
Dalgic, Structure property relationships in porous sintered steel, Materials Chemistry and Physics, 67 (2001) 37–42

Synthesis and Properties of 1,2-bis[2-methyl-5-(9,9-dihexyl-fluorene)-3-thienyl] perfluorocyclopentene Lele Ma and Gang Liu* Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P.
The structures of diarylethene 1o were confirmed by NMR. 1H NMR (400 MHz, CDCl3, TMS), δ(ppm):0.55–0.58 (m, 8H), 0.67–0.70 (m, 12H), 0.98–1.06 (m, 24H),1.91 (d, 8H,), 1.97 (s, 6H), 7.23–7.27 (m, 8H), 7.39 (s, 2H),7.45 (d,1H, J = 0.8Hz), 7.47 (d,1H, J = 0.8Hz), 7.61–7.63 (m, 4H).
The structure was measured by NMR.

This scientific field investigates the relationship between the structure of materials at atomic or molecular scales and their macroscopic properties.
It incorporates elements of applied physics and chemistry.
A major breakthrough in the understanding of materials occurred in the late 19th century, when the American scientist Josiah Willard Gibbs demonstrated that the thermodynamic properties related to atomic structure in various phases are related to the physical properties of a material.