Search results

The compounds have high selectivity to pyrite, and tailoring the structure is possible to to enhance the flotation efficacy.
The characteristic molecular structure of N-O type chelating reagent is at least one aromatic ring in their backbone, which can explain their poor solubility in water [11].
The internal hydrogen bond in molecular is considered to be the main factor determining the selectivity of TCPO as a chelating collector. 3.2 O-O type chelating reagents Most of O-O type chelating reagents work as flotation collectors in the weak acid condition, such as cupferron and neocupferron with one and two aromatic rings respectively in the chemical structures which are the satisfactory collectors of native copper [11].
Wang: Engineering Chemistry & Metallurgy Vol. 18 (1997), p. 312-317.

The greatly increased chemistry/microstructure "window" can lead to enhanced mechanical and physical properties.
This process has the same attributes as RS - extension of solubility limits, production of novel structures and refinement of the microstructure (down to the nanostructure range); and additionally allows production of a dispersion of second phase particles.
MA of titanium alloys has resulted in supersaturated solid solutions, metastable crystalline and glassy phases as well as nanometer-sized grain structures.
Stability of grain structure in a hot isostatically pressed gamma titanium aluminide.

Microfluidic structure and devices can be fabricated on polymer substrate with different micromachining techniques such as injection molding [3], hot embossing [4] and laser ablation, etc.
In this manner the moving laser beam is able to cut structures such as channels and wells into the workpiece.
Using raster scanning of the laser beam technique it is possible to generate structures with a depth from 50mm and a minimum width of approximately 200mm up to depth and widths of several mm, governed by the beam size and the laser settings.
The chemical modification was performed by a simple reduction reaction followed by the widely used organosilane chemistry to introduce diverse functional groups such as perfluoroalkyl (–CnF2n+2), amino (–NH2), and sulfhydryl (–SH) for surface passivation or further biomolecule immobilization.

Fig. 2, shows the microstructure of Sn-Bi solder which consists of lamellar type structure with Sn and Bi phase which forms a network together with a eutectic phase.
a) b) 100µm 100µm Lamellar Structure Bi-phase (white area) Sn-matrix (dark area) Fig 2 (a) and (b).
In the same research, Bi acts as the strengthening mechanism whereby it has a strong solid solution to the Sn matrix and refines the structure besides hampering the growth of the microstructure.
Materials Chemistry and Physics 71 (2001) Pp.255–271

From the Fe-Mn binary equilibrium diagram [17], it can be deduced that the annealed samples were composed of ferrite, which has a body-centered cubic (bcc) structure.
The annealed samples are composed of ferrite with bcc crystal structure.
Peters, The change of steel surface chemistry regarding oxygen partial pressure and dew point, Appl.
McDermid, Development of the surface structure of TRIP steels prior to hot-dip galvanizing, Mat.

The granulated slag is known to possess latent hydraulic activity as a vitreous structure material [1-4].
[13] Heinz-Gunter Smolczyk, Effect of the chemistry of the slag on the strengths of blast furnace cements, Zem.
[15] Wan Huiwen, Chen Xuebing, Wang Jun, Influence of the Composition and Structure of Slag on Its Activity, Journal of Wuhan University of Technology. 31 (2009) 101-103
Mehrotra, Influence of granulated blast furnace slag on the reaction, Structure and properties of fly ash based geopolymer, J Mater Sci. 45 (2010) 607–615

Introduction The confirmation of the primary alcohol structure with varying environmental conditions is one of the most interesting and challenging subjects in a variety of scientific fields, i.e. chemistry, physics, biology, electronics engineering, and civil engineering.
From the beginning, the dielectric measurements [1] have proved to be a powerful method to study the molecular structure, solute–solute and solute–solvent interactions, and dynamics of polar liquids.
Dielectric study of water structure in polymer solution.

The liquid phase is considered as a source of nonmetals, the interaction with which results in the formation of the structure and composition of the solid phase [1-3].
To investigate the structure of the solid phase after ball milling, the X-ray diffraction (XRD) analysis was conducted using a diffractometer D8 Advance with the monochromated CuKa radiation.
Boggs, P.Pulay, G.Fogarazi, The molecular structure of toluene, J.
Muala C-C Bond Cleavage in Aromatic Molecules; Benzene, Toluene and Naphthalene Jordan Journal of Chemistry. 8(2) (2013) 113-124

Nanotechnology is a nascent technology encompassing the creation or utilization of structures or materials at the nanoscale [11].
The XRD spectra show a typical hexagonal wurtzite structure of Al2O3 concerning standard card (JCPDS No. 79-0208), where the matching with the firm diffraction peaks (2ϴ ~ 68.19, 43.8, 37.7 ), are observed corresponding to (300), (113), and (110)planes, respectively.
The results also showed that the nanoparticles have a crystalline and, in nature, a hexagonal structure.
Guenbour, "Influence of temperature and hydrodynamic conditions on the corrosion behavior of AISI 316L stainless steel in pure and polluted H3PO4: Application of the response surface methodology," Materials Chemistry and Physics, vol. 133, no. 1, pp. 289-298, 2012

After 20 days operation in good condition, the parameters such as COD, MLSS, SVI, and SS in effluent were monitored on daily bases for 10d, the AS was collected for the experiments on condition that the fluctuation of these parameters were less than 20%. 2.2 EPS extraction method The stratification structure and extraction protocol of AS in this article were modified based on the research of Morgan et al. (1990) and Li and Yang [15,16]. 25mL AS was taken and centrifuged at 6000g for 15 min at 4°С, the supernatant carefully collected was bulk solution; The NaCl solution with the same conductivity of AS sample was made and preheated to 70°С, then it was used to re-suspended AS sample in the tube immediately to its original volume after removing of the bulk solution.
During the process of sludge cultivation, with the increasing temperature the population structure changed and the MLSS of the thermophilic sludge decreased until stabilized.
The phenomenon is due to the loose structure of the thermophilic sludge hence the easier extraction of the substances in the EPS.
In Graduate Department of Chernical Engineering & Applied Chemistry.