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Meanwhile the molecular structure is characterized, and the viscosity behavior of the ionic hydrophobic-associating polymer solution is analyzed.
Hydrodynamic volume and viscosity are increasing resulting from super-molecular structure.
Polymer Chemistry, 1997, 35: 243
A novel associative polymer for eor:performanceproperties, Oilfield Chemistry, 1999, 16(2): 149~152
Oilfield Chemistry, 1997, 14(3): 252~256

The so-called hierarchical structures consist of the cores，the shell and the branches.
Fig.1(d) shows that the HRTEM image of the branch displays a typical amorphous structure.
Hierarchical structure SiO2 stands on carbon nanowires.
In the literature, we note that the core-shell structure has been synthesized earlier.
Most of the core-shell structures are grown by metallic catalyst [11, 12].

Fadhil3,c 1,3Department of Applied Chemistry, College of Applied science, University of Samarra, Samarra, Iraq. 2Department of Biology, College of Education, University of Samarra, Samarra, Iraq.
The result show affect ground water in this city by salt and mineral that found in watershed and ground structure specially limestone that flow throw ground that lead to dissolve salt and mineral then arise the value of studied data.
Introduction: The chemical composition of groundwater is determinate by a number of influence these including mineralogy of rock types forming catchment or aquifers overlying land uses proximately to the coast or sources of recharge water, soil type aquifer structure and the time water has been underground away from atmospheric processes.
The biggest influence on the chemistry of Shari Lake and Samarra groundwater are naturally occurring process and to understand groundwater chemistry it is necessary to be familiar with them.

Surface alteration produced structures following crystallographic orientation up to several 10 µm in size.
Rather, it is the result of a complex interplay of processes dependent on mineral structure and chemistry, fluid abundance and chemistry, microbial community, and temperature.
Craig: Mineral chemistry of metal sulfides (Cambridge University Press, Cambridge 1978) [2] P.

Dendrimer defines the macromolecules with highly branched dendritic structures obtained through the successive and repeated reaction of branching units (e.g., multifunctional monomer) [5].
It has an exact molecular structure with properties of perfect geometric symmetry, numerous peripheral functional groups, extensive intramolecular cavity, globular or elliptical 3-dimensional structure, and the monodispersion of relative molecular mass [6,7,8], and such special structural performances have already attracted interests from scientists in various disciplines, and makes it widely used in fields of analytical chemistry, sensor, electroluminescent device and catalytic chemistry.
The dendritic structure containing ethyl group leads to a red-shifted fluorescence.
In order to obtain 8-hydroxyquinoline complexes with better electroluminescent performance, it is feasible to modify 8-hydroxyquinoline ligands with dendritic structures of high generation number that contain more ethyl groups.
Dendrimerss in supramolecular chemistry: Chem.

We modeled the monolayer GaN from a two-atoms unit cell having a honeycomb structure (Fig. 1).
Next, band structures are calculated for each applied strain.
The calculational results of band structures are given in Fig. 3.
Fabio., The electronic structure of gallium nitride.
Nurwantoro, Density-functional-theory calculations of formation energy of the nitrogen-doped diamond, Indonesian Journal of Chemistry, 18(4), (2018) 749–754

The results indicated that the compound was spinel structure, and the initial capacity could reach 162.28 mAh·g-1 and the cycling performance was good, implying the spinel structure of Li4Ti5O12 was more stable when the material was tested by charging-discharging.
Fig. 4 Cyclic voltammetry profiles of Li4Ti5O12 Summary Well crystallized Li4Ti5O12 compound with spinel structure were prepared by a simple, low cost solid state method.
Physics and Chemistry of Solids Vol:69 (2008), P.1454 [6] M.
Materials Chemistry.

Li3,e 1 Jilin University Alan G MacDiarmid Institute, Changchun 130012, China 2 Department of Chemistry, Peking University, Beijing 100871, China 3 Department of Chemistry and Biochemistry, California State University, Long Beach, CA, USA a lixiang81@email.jlu.edu.cn, b cwang@jlu.edu.cn, cyanli@chem.pku.edu.cn, d yanli@chem.pku.edu.cn, e lli@csulb.edu Keywords: Electrospinning; CdS nanorods; Half hollow spheres Abstract.
Scanning electron microscopy (SEM), transmission electron microscopy (TEM) and UV-Vis absorption spectra were used to characterize the structure.
The electrospinning from CdS/PVP in ethanol produced a structure having a combination of fibers, ribbons, beads and an unexpected half hollow sphere (HHS) structure.
When the weight ratio of CdS:PVP was 1:1000, a structure looks like half hollow spheres (HHS) was observed (Fig. 2b).
Figure 3 shows SEM images of CdS/PVP electrospun structure under different concentrations of PVP as the weight ratio of CdS:PVP kept at 1:1000.

The crystal structure has been solved by a single crystal NaMg3In(MoO4)5.
A general view of the structure projected along the c axis is shown in Fig. 2.
Liu, Recent advances in the chemistry of lanthanide-doped upconversion nanocrystals, Chem.
Kotova, Synthesis and crystal structural study of ternary molibdate NaMg3In(MoO4)5, Journal of Structural Chemistry 34 (1993) 784-788
Buddhudu, Spectral analysis of Eu3+ and Tb3+:B2O3–ZnO–PbO glasses, Materials Chemistry and Physics 102 (2007) 181-186

Brasil 101 1700-066 Lisboa, Portugal 2 LCPC, Service for Physico-Chemistry of Materials, Laboratoire Central des Ponts et Chaussées 58, Boulevard Lefebvre, 75732 Paris Cedex 15, France 3University of Évora, Chemistry Department and Évora Chemistry Center Rua Romão Ramalho 59, 7000-671 Évora, Portugal 4 University of Évora, Department of Geosciences and Geophysics Center of Évora Rua Romão Ramalho 59, 7000-671 Évora, Portugal a ssilva@lnec.pt, b dsoares@lnec.pt, clpmatos@lnec.pt, dmsalta@lnec.pt, edivet@lcpc.fr, fAlexandre.Pavoine@lcpc.fr, g candeias@uevora.pt, h jmirao@uevora.pt Keywords: Delayed ettringite formation (DEF), Scanning electron microscopy (SEM), Fly ash, Metakaolin, Blast-furnace slag, Silica fume, Limestone filler.
The degradation of concrete structures caused by delayed ettringite formation (DEF) is a problem that affects many concrete structures worldwide [1].
This pathology is due to the formation of expansive ettringite inside the material and is very difficult to deal with, because presently there is no efficient method to repair concrete structures affected by DEF.
Introduction Several dams and concrete bridge structures with unusual levels of deterioration and distress have been detected in Portugal over the last few years [4,5] which in some cases affect concrete structures that are only a few years old.
Fasseu, P., Silva, A.S., Optimization of the choice of cement in order to reduce the expansion of concrete as a result of delayed ettringite formation (DEF), Seventh CANMET/ACI International Conference on Durability of Concrete, Montreal, Canada (2006) 331-342 [4] Braga Reis, M.O., Silva, H.S., Silva, A.S., AAR in Portuguese structures.