Dental cementum is a specialized calcified structure covering the root of a tooth. This study aims to investigate cementum using various stains which can be exceedingly useful in investigation, observation and diagnosis. 4µm sections of 25 extracted normal teeth, 25 cases of various cemental pathologies and 25 ground sections were stained using cresyl violet, H/E, toluidine blue and periodic ac...

In this research, the adsorption capacity of diatomaceous earth in removal crystal violet dye (CV) aqueous solution was evaluated. The experimental methodology began with determination texture properties by adsorption-desorption isotherms N2 a 77 K, identification functional groups Fourier transform infrared spectrophotometry (FTIR), morphology scanning electron microscopy (SEM) and, pH isoelec...

In this research, a response surface methodology (RSM) was used to investigate the effects of independent parameters (pH, contact time, temperature, adsorbent dosage, and initial concentration of pollutant), their simultaneous interactions, and quadratic effects on crystal violet adsorption onto two starch based materials in the form of batch experiments. The characterizing results indicated th...

Copper (I) oxide microparticles with the morphology of cubic and hollow sphere were synthesized with the assistance of surfactant as the shape controller. Both particles were then subjected to study the catalytic activity and observed the results of shape effects of catalysts on rate of catalytic reaction. The decolorizing reaction of crystal violet and sodium hydroxide was chosen and measured ...

Two-component relativistic time-dependent density functional theory calculations with spin-orbit coupling predict yellow and orange-red absorption for BiPh5 and BiMe5, respectively, providing an excellent explanation for their respective violet and blue-violet colors. According to the calculations, the visible absorption is clearly attributable to a single transition from a ligand-based HOMO to...

Adsorption techniques are widely used to remove the pollutants from waters, especially those that are not easily biodegradable. The removal of crystal violet dye (CVD) from water was studied by using Amberlyst 15, a cation-exchange resin (CER), along with Ferrous (Fe 2+ ) and H2O2 . In this study the main factors that can influence the degradation of crystal violet dye are molar ratio of [(H2O2...

Excessive discharge of synthetic azo dyes into the aquatic ecosystem is a global concern. Here, we develop green approach to remediate dye pollutants by fabricating an easily separable bio-nanocomposite, based on nanofibrils from whey protein concentrate together with montmorillonite. The nanocomposite was characterized using scanning electron microscopy, Fourier transform infrared spectroscopy...