5 results match your criteria: "Institute for Colorants[Affiliation]"
Reconstruction of reflectance data using an interpolation technique.
J Opt Soc Am A Opt Image Sci Vis
March 2009
Department of Color Physics, Institute for Colorants, Paint & Coatings, Tehran, Iran.
A linear interpolation method is applied for reconstruction of reflectance spectra of Munsell as well as ColorChecker SG color chips from the corresponding colorimetric values under a given set of viewing conditions. Hence, different types of lookup tables (LUTs) have been created to connect the colorimetric and spectrophotometeric data as the source and destination spaces in this approach. To optimize the algorithm, different color spaces and light sources have been used to build different types of LUTs.
View Article and Find Full Text PDFDegradation and toxicity reduction of textile wastewater using immobilized titania nanophotocatalysis.
J Photochem Photobiol B
January 2009
Department of Environmental Research, Institute for Colorants, Paint and Coatings, Tehran 1668814811, Iran.
The feasibility and performance of photocatalytic degradation and toxicity reduction of textile dye (Acid Blue 25) have been studied at pilot scale in an immobilized titania nanoparticle photocatalytic reactor. UV-Vis, Ion Chromatography (IC) and chemical oxygen demand (COD) analyses were employed to obtain the details of the photocatalytic dye degradation. The effects of operational parameters such as H2O2, pH and dye concentration on the photocatalytic degradation of Acid Blue 25 were investigated.
View Article and Find Full Text PDFInteraction of water-soluble amino acid Schiff base complexes with bovine serum albumin: fluorescence and circular dichroism studies.
Spectrochim Acta A Mol Biomol Spectrosc
December 2008
Department of Nanotechnology and Nanomaterials, Institute for Colorants, Paint and Coatings, P.O. Box 16765-654, Tehran, Iran.
Article Synopsis
- Fluorescence and circular dichroism spectroscopy were employed to study how certain zinc complexes of amino acid Schiff bases interact with bovine serum albumin (BSA) in a physiological buffer at pH 7.0.
- The study identified that static quenching occurs in the fluorescence data, allowing for the calculation of binding affinity constants and thermodynamic parameters, revealing the importance of hydrophobic and hydrogen bonding interactions in the binding process.
- Analysis of secondary structural changes in BSA showed that the binding of these complexes alters the protein's structure, suggesting potential implications for their transport and elimination in biological systems.
Sonochemical degradation of Basic Blue 41 dye assisted by nanoTiO2 and H2O2.
J Hazard Mater
May 2008
Colorant Manufacturing and Environmental Science Department, Institute for Colorants, Paints and Coatings, Tehran, Iran.
The sonolysis of Basic Blue 41 dye in aqueous solution was performed at 35 kHz using ultrasonic power of 160 W and aqueous temperature of 25+1 degrees C within 180 min. The TiO2 nanoparticles were used as a catalyst to assist the sonication process. The effect of experimental parameters such as pH, H2O2 concentration and initial dye concentration on the reaction were investigated.
View Article and Find Full Text PDFPhotocatalytic degradation of agricultural N-heterocyclic organic pollutants using immobilized nanoparticles of titania.
J Hazard Mater
June 2007
Colorant Manufacturing and Environmental Science Department, Institute for Colorants, Paint and Coating, Tehran, Iran.
Degradation and mineralization of two agricultural organic pollutants (Diazinon and Imidacloprid as N-heterocyclic aromatics) in aqueous solution by nanophotocatalysis using immobilized titania nanoparticles were investigated. Insecticides, Diazinon and Imidacloprid, are persistent pollutants in agricultural soil and watercourses. A simple and effective method was developed to immobilization of titania nanoparticles.
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