Güncel Gönderiler: Makale Koleksiyonu
Toplam kayıt 1058, listelenen: 181-200
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Electrochemical synthesis of self-doped polyaniline in fluorosulfonic acid/acetonitrile solution
(Elsevier Science Sa, 2002)Electrochemical formation of self-doped sulfonated polyaniline (SPAN) was carried out in acetonitrile-containing anhydrous fluorosulfonic acid (FSO3H). Fluorosulfonic acid was used as both sulfonation reagent for aniline ... -
Electropolymerization and in situ sulfonation of aniline in water-acetonitrile mixture containing FSO3H
(Elsevier Science Sa, 2002)In situ sulfonation reaction of aniline was carried out in water and water-acetonitrile mixture by changing both aniline and fluorosulfonic acid (FSO3H) concentrations. The optimum conditions for the polymer formation was ... -
Affinity separation of immunoglobulin G subclasses on dye attached poly (hydroxypropyl methacrylate) beads
(Elsevier Science BV, 2006)Poly(hydroxypropyl methacrylate) [poly(HPMA)] gel beads with an average size of 150-200 mu m were prepared by suspension polymerization of hydroxypropyl methacrylate (HPMA). The poly(HPMA) gel beads were characterized by ... -
Cr(III)-imprinted polymeric beads: Sorption and preconcentration studies
(Elsevier Science BV, 2007)The purpose of this study is to prepare a novel molecular imprinted adsorbent to Cr(III) analysis with high selectivity. Initially, chromium (III)-methacryloylhistidine (MAH/Cr(III)) complex monomer was synthesized and ... -
Removal of heavy metal ions from aquatic solutions by membrane chromatography
(Elsevier Science BV, 2000)Polyvinylalcohol membranes were prepared by a solvent casting technique. Metal-complexation ligand, i.e. monochlorotriazinyl-dye Cibacron Blue F3GA was then attached. These membranes with a high water content of 119%, and ... -
Exact solutions in five-dimensional axi-dilaton gravity with Euler-Poincare term
(IOP Publishing LTD, 2007)We examine the effective field equations that are obtained from the axi-dilaton gravity action with a second-order Euler-Poincare term and a cosmological constant in all higher dimensions. We solve these equations for ... -
The effects of fluorine on the structural, surface morphology and optical properties of ZnO thin films
(Elsevier Science BV, 2007)The optical and structural properties of fluorine-doped Zinc oxide (ZnO) thin films have been investigated. The X-ray diffraction spectra indicate that the films have polycrystalline nature. A ZnO single phase with a ... -
Effects of In, Al and Sn dopants on the structural and optical properties of ZnO thin films
(Pergamon-Elsevier Science LTD, 2007)Effect of In, Al and Sn dopants on the optical and structural properties of ZnO thin films have been investigated by X-ray diffraction technique and optical characterization method. X-ray diffraction patterns confirm that ... -
Iron removal from human plasma based on molecular recognition using imprinted beads
(Elsevier Science BV, 2005)The aim of this study is to prepare ion-imprinted polymers which can be used for the selective removal of Fe3+ ions from Fe3+-overdosed human plasma. N-Methacryloly-(L)-glutamic acid (MAGA) was chosen as the complexing ... -
Utilization of the Phaseolus vulgaris L. waste biomass for decolorization of the textile dye Acid Red 57: determination of equilibrium, kinetic and thermodynamic parameters
(Taylor & Francis Inc, 2007)In the present study, biosorption of Acid Red 57 (AR57) onto a waste biomass of Phaseolus vulgaris L. was investigated by varying pH, contact time, biosorbent concentration and temperature, to determine the equilibrium, ... -
Kinetics and equilibrium studies for the adsorption of Acid Red 57 from aqueous solutions onto calcined-alunite
(Elsevier Science BV, 2006)The adsorption of Acid Red 57 (AR57) onto calcined-alunite was examined in aqueous solution in a batch system with respect to contact time. pH and temperature. The first-order, pseudo-second-order Kinetic and the intraparticle ... -
Biosorption potential of Neurospora crassa cells for decolorization of Acid Red 57 (AR57) dye
(John Wiley & Sons LTD, 2006)Biosorption of Acid Red 57 (AR57) on to Neurospora crassa was studied with variation of pH, contact time, biosorbent and dye concentrations and temperature to determine equilibrium and kinetic models. The AR57 biosorption ... -
Biosorption kinetics and isotherm studies of Acid Red 57 by dried Cephalosporium aphidicola cells from aqueous solutions
(Elsevier Science Sa, 2006)Equilibrium, kinetics and thermodynamic studies on the removal of Acid Red 57 (AR57) by biosorption onto dried Cephalosporium aphidicola (C. aphidicola) cells have been investigated in a batch system with respect to pH, ... -
Electrochemical and theoretical investigation on the corrosion of aluminium in acidic solution containing some Schiff bases
(Elsevier Science BV, 2006)The effect of newly synthesised three Schiff bases-2-[2-aza-2-(5-methyl(2-pyridly))vinyl]phenol, 2-[2-aza-2-(5-methyl(2-pyridly))vinyl]-4-bromophenol, 2-[2-aza-2-(5-methyl(2-pyridly))vinyl]-4-chlorophenol-on the corrosion ... -
Corrosion performance of self-doped sulfonated polypyrrole
(Elsevier Science Sa, 2006)Electrodeposition of sulfonated polypyrrole (SPPy) on 304-stainless steel (SS) was achived in fluorosulfonic acid (FSO3H)/acetonitrile medium using potentiostatic techniques. Adherent and homogeneous SPPy films were obtained. ... -
Spectroscopic determination of acid dissociation constants of some pyridyl-substituted 2-aminothiazole derivatives
(American Chemical Society, 2006)The acid dissociation constants, K-a, of nine biologically active 2-amino-4-(x-pyridyl)- thiazole, 2-methylimino-3-methyl- 4-(x-pyridyl)- 2,3-dihydrothiazole, and 2-methylamino-4-(x-pyridyl)- 2,3-dihydrothiazole were ... -
Anti-corrosive properties of polyaniline, poly(2-toluidine), and poly(aniline-co-2-toluidine) coatings on stainless steel
(Elsevier Science BV, 2007)This study examines the use of polyaniline (PANi), poly(2-toluidine) (PT), and poly(aniline-co-2-toluidine) (co-PT) for corrosion protection of 304-stainless steel (SS) in 0.5 M HCl solution. The PANi, PT, and co-PT coatings ... -
Hydrogen bonding and dimeric self-association of 2-pyrrolidinone: An ab initio study
(Kluwer Academic Publ, 1999)Ab initio calculations on the different associated structures of 2-pyrrolidinone with water and with itself were carried out using 3-21G and 6-31G(*) basis sets at the Hartree-Fock level, including electron correlation ... -
An investigation of the influence of the pairing correlations on the properties of the isobar analog resonances in A=208 nuclei
(Indian Academy Sciences, 2004)Within the quasi-particle random phase approximation (QRPA), the method of the self-consistent determination of the isovector effective interaction which restores a broken isotopic symmetry for the nuclear part of the ... -
Broadband staircase quantum well infrared photodetector with low dark current
(Elsevier Science BV, 2006)We present a theoretical investigation of a novel staircase-like quantum well infrared photodetector (QWIP). It detects wavelengths between 8.8 mu m and 12.3 mu m at an applied electric field of F= 6 x 10(4) V/cm at room ...
