Search results

Chemistry Department, Central Tehran Branch, Islamic Azad University, Tehran, Iran. 3.
To remove probable GA residue from scaffolds structure, scaffolds were washed with distilled water, ultrasounded three times and finally freeze-dried to maintain their porous structure.
All the samples showed the characteristic apatitic structure.
Both Magnesium and Calcium have similar behaviour chemistry and both are group II metals [24].
Chemistry - A European Journal, (1998), 4 (10), 1898-1903

Such variability is due to the different phase stability of α-SiAlONs and the varying physical chemistry of the competing phases, including the transient/residual liquid.
Such structure complexity increases the slip resistance of dislocations.
The present paper attempts to review our current understanding of the physical chemistry of α-SiAlON and its application to the development of tough ceramic.
In addition, there is Al substitution for Si, accompanied by interstitial (M) filling, in this structure.
Due to the different phase stability of α-SiAlONs and the varying physical chemistry of the competing phases, microstructure control must be tailored for each α-SiAlON.

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.

The glass network structure was evaluated by laser Raman spectroscopy (XploRA, HORIBA).
Kasuga, Structures and dissolution behaviors of MgO-CaO-P2O5-Nb2O5 glasses, J.
Phosphate and Borate Bioactive Glasses, The Royal Society of Chemistry, 2022, pp.62-77
Hartmann, The structure of CaO-Na2O-MgO-P2O5 invert glass, J.
Jones, The crystal structure of hopeite, Am.

At microscopic scale, the Fourier transform infrared method is the mostly used to identify some specific structure in biopolymer-based films, such as amides, secondary structural units, semi crystalline structure, among others [19,20,21].
They can be related to complex structures like B-V type crystal structure, typical of tuber starches [2,9,10].
Therefore, the formation of semi crystalline structure can be an effect not necessarily related to the flexibility of the film.
Biliaderis, Food Chemistry Vol. 62 (1998), p. 333 [8] I.
Krochta, Journal of Agricultural and Food Chemistry Vol. 44 (1996), p. 43 [14] T.

This is related to the presence of a duplex structure with a good balance in the proportion of austenite (γ) / ferrite (α).
This is because the fusion welding process has great influence on the duplex structure, both in the fusion zone (FZ) and HAZ [4].
Consequently, it becomes mandatory to design welded joint and control appropriately the process conditions to meet the requirements, as well as take care of the chemistry and microstructure of joints.
On the one hand, the penetrating capability of Cl- is great enough to penetrate through the tiny pores in passive film and make the passive film structure changed.
Sundaresan, Effect of weld metal chemistry and heat input on the structure and properties of duplex stainless steel welds, Mater.

Study on the Dispersion of Graphite as Pore Former Qiang Lia and Fei Ma Department of Chemistry, East China Normal University, Shanghai 200062, China a qli@chem.ecnu.edu.cn Keywords: pore former, Graphite, dispersion, surfactant Abstract.
The dispersion of pore former controls the homogenous pore structure of porous ceramics, and deeply influences its properties.
The properties of porous ceramics are deeply determined by pore structure, which request homogenous dispersion of pore former.

The introduction of the different hydrophilic spacers into the present Schiff bases can lead to more flexible structures and new properties are expected.
The molecular structures and the abbreviations are shown in Fig. 1.
Chemical structures of Schiff base molecules.
In order to further clarify the structures of the hydrogen-bonded complexes, we have measured the ESI-MS of the hydrogen-bonded complexes.
Schematic illustration of structures of GN1/BA (a) and GN2/BA (b) complexes.

The morphology and chemical structure of the composites were examined by SEM and FTIR.
It indicated that ultrasonic force did not lead to the variation of the chemical structure of cellulose.
The particular structure offers cellulose unique properties, such as chemical stability, mechanical strength, biocompatibility and biodegradability.
Nevertheless, just because of this structure, it is rather difficult to dissolve cellulose in water and most organic solvents.
Tang: The structure and properties of cellulose fibers treated with ultrasonic wave.

Synthesis and Characterization of Spherical Aggregations of Organic–ZnS Hybrids Junsong Yang1, a 1 Teaching and Research Office of Chemistry, Department of Public Course, Bengbu Medical College, Bengbu, Anhui, China 233000 aemail:cacfrw@163.com Keywords: organic; ZnS; hybrid Abstract.
Fig. 1 gives that the organic–ZnS hybrids has a spherical structure whose frame-works are evenly and densely interspersed with single sphere.
Fig. 1a show a typical spherical structure of the organic–ZnS hybrids, around which a thin film was spreaded.
It was observed that the spherical structure was enwrapped by a thin film.
The three-dimensional nanocrystal-sheet structure was demonstrated when the TEM grid was tilted and the picture remained unchanged.