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Zeolites are widely used as ion exchangers, adsorbents, separation materials and catalyst due to their well-tailored and highly-reproducible structures [5].
SEM characterization is used to look at the structure and morphology of the sample before and after testing.
The XRD pattern also shows that the metakaolin has an amorphous structure.
Based on the diffraction pattern it can be seen that ZG_B has a lower crystalline structure compare to that of ZG_A.
Khalili, Adsorption of Cu(II), Ni(II), Zn(II), Cd(II) and Pb(II) onto Kaolin/Zeolite Based- Geopolymers, Advances in Materials Physics and Chemistry, vol. 2, 119-125, 2012

In this study, LSCF with oriented or controlled domain structures was prepared, and its ferroelastic mechanical behaviour was investigated.
Figure 5 compares the stress vs strain relationships of LSCF under uniaxial compression at RT for random and oriented domain structures.
The domain structure was observed using a SEM.
LSCF annealed in lower O2 partial pressures show completely different mechanical behaviours, reflecting the different domain structures observed in Fig. 6.
Malzbender, Creep behavior and its correlation with defect chemistry of La0.58Sr0.4Co0.2Fe0.8O3-d, Acta Mater. 60 (2012) 2479-2484

Experimental In the experiment two types of austenitic steels, having the NaCl crystal structure (cubic, face centred structure) were used as well as austenitic-ferritic one of cubic, body centred structure.
Generally the faster transport of manganese partly explains the morphological structure of the scale that is mainly built of the manganese compounds.
Moreover the depletion of manganese close to the metal/scale interface causes the phase transformation from austenitic to ferritic structure and causes the decrease of the diffusion rate [11].
Depletion of Mn close to the metal/scale interface causes the phase transformation from austenitic to ferritic structure
K.Chen: Journal of Physics and Chemistry of Solids Vol 43(1982), pp. 29-38

The change of microbial flora structure is also an important index for wastewater treatment efficiency.
In this regard, heavy metals can remove sensitive individuals after entering the system and then change the microbial flora structure.
Thus, microbial flora structure was significantly changed.
Heavy metal chromium was also seen to turn fixing protozoa into carnivorous species and thus change the original biocoenosis structure of protozoa in the activated sludge.
Biological chemistry (the third edition)[M].Beijing: Higher Education Press , 2002.

When the temperature of the hot mix asphalt added Sasobit agent, Sasobit asphaltene molecules will enter - the sheet-like elements between the gum, the formation of new aggregates, in this case the molecular structure of the asphalt by the higher level into the low level, the release the micelle structure wrapped in the overlying saturated components, causing an increase in the dispersion of micelles, reduce the viscosity of bitumen [6].
(2)Zeolite warm mix technology (Aspha-Min) Reticulated silicate zeolite compositions, having a structure in a huge space communicating with each other.
These spaces form a variety of sizes longer, wider channels can accommodate relatively large cations and large molecules, ions and molecules easier access to the zeolite structure, to facilitate volatilization of water vapor.
(4)Surfactant Technology (ZYF warm mix) The molecular structure of the surface-active agent is generally composed of a polar portion (hydrophilic portion) and the non-polar part (lipophilic moiety).
Due to the surface tension of the liquid can be known by Richard Handbook of Chemistry, so only the contact angle of asphalt bitumen can calculate the surface free energy [4-8].

A second one would be the formation, of a calcium–silicate–hydrate phase intermingled with calcium carbonate [8], generating a more strength structure than that of conventional hydration, forming a new binding amorphous phase of calcium–silicate–hydrocarbonate.
It is important to note that, as reported elsewhere [8] short carbonation times do not change the original C-S-H gel structure, indicating that the gel pore volume is maintained.
Thus, the fact that the PC1h paste presents a slightly higher mechanical resistance to compression than PREF paste, is very probably due to a slightly higher content of calcium carbonate, which has a higher hardness [16], as well as by the shrinkage of its internal region C-S-H structure and the formation of a new binding amorphous phase.
- The porosity related property results indicate that the 1h carbonated paste has a structure that may promote a good durability.
Effects of the temperature and relative humidity on the structure of C-S-H gel.

The mechanism of stepwise electrochemical oxidation and reduction of the phase structure of gold on the surface of the graphite electrode in 0.1 M NaOH is offered.
The mechanism of stepwise electrochemical oxidation and reduction of the phase structure of gold on the surface of the graphite electrode in 0.1 M NaOH is proposed.
Mudring In: Schmidbaur H (ed) Gold, progress in chemistry, biochemistry and technology.

Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia. 2.
A dense, fine and polygonal grain structure was obtained. 1.
The deposit morphology of the mixture BMPOTF and MSA based tin coated substrates were observed by using EDX and SEM, where dense, fine and polygonal grain structures were obtained.

All of the samples studied are characterized by a perovskite-like cubic structure, with the unit cell parameter a increasing continuously with the average crystallite size.
The aim of this work is to prepare the La0.50Ba0.50MnO3 manganite with a crystallite size close to ~ 30 nm using a modified sol-gel method and to study the structure and magnetic properties of samples depending on the conditions of their heat treatment.
Zonis, Organic Chemistry (Prosveshchenie, Moscow, 1966), 135 [in Russian]

In order to machining the complex structures in the resonators and optical apparatus, grinding process with inclined ball-headed diamond wheel is discussed.
Introduction Fused silica glass is widely applied in modern analytical chemistry, laser engineering, and navigation systems due to it’s unique properties such as high resistance to heat and chemicals, large transmission range and low optical absorption; high electrical insulation and fine vibration property [1].
For avoid collision problem and obtain complex structure, the diamond wheel axis need to be inclined during the grinding process and a ball-headed wheel should be used.