Ara
Toplam kayıt 53, listelenen: 11-20
Modification of bentonite with a cationic surfactant: An adsorption study of textile dye Reactive Blue 19
(Elsevier Science BV, 2007)
The utilization of modified bentonite with a cationic surfactant (dodecyltrimethylammonium (DTMA) bromide) as an adsorbent was successfully carried out to remove a synthetic textile dye (Reactive Blue 19 (RB 19)) by ...
Electrochemical oxidation of ds-DNA on polypyrrole nanofiber modified pencil graphite electrode
(Wiley-V C H Verlag GMBH, 2007)
Preparation of a polypyrrole nanofiber (PPyNF) modified pencil graphite (PG) electrode and its usage in the electrochemical DNA biosensors was investigated. The electrodes (PPyNF/PG1 and PPyNF/PG2) were prepared from a ...
Depth profile investigations of silicon nanocrystals formed in sapphire by ion implantation
(Amer Inst Physics, 2007)
Depth profiles of Si nanocrystals formed in sapphire by ion implantation and the effect of charging during X-ray Photoelectron Spectroscopy (XPS) and Secondary Ion Mass Spectrometry (SIMS) measurements have been studied. ...
Benzotriazole-mediated amidoalkylations of nitroalkanes, nitriles, alkynes and esters
(Arkat Usa Inc, 2007)
Reactions of readily available and stable N-(alpha-amidoalkyl)benzotriazoles 1 ( derived from a variety of aliphatic, aromatic or heterocyclic aldehydes) with diverse nitroalkanes, nitriles, alkynes and esters afforded ...
Theoretical studies on the structure of [(1-aza-2-benzimidazol-2-ylprop-1-enyl)amino]aminomethane-1-thione
(Arkat Usa Inc, 2007)
The tautomerisation and acid-base properties of [(1-aza-2-benzimidazol-2-ylprop-1-enyl) amino]aminomethane-1-thione were studied both in the gas and aqueous phase to elucidate the structure of this compound. The computed ...
Tunable long-wavelength broad band asymmetric quantum well infrared photodetector
(IOP Publishing LTD, 2007)
We present a theoretical investigation of a GaAs/AlGaAs infrared detector consisting of three asymmetric quantum wells. Each well is designed to yield absorption and a photoresponse at peak wavelengths of 8.2 mu m, 9.5 mu ...
The variation of electronic properties with the doping concentration of modulation-doped AlxGa1-xAs-GaAs double quantum wells
(Academic Press LTD Elsevier Science LTD, 2007)
In this paper we have calculated the sub-band structure and the confinement potential of modulation-doped Ga1-xAlxAs-GaAs double quantum wells as a function of the doping concentration. The electronic properties of this ...
FTIR spectroscopic and theoretical study of the photochemistry of matrix-isolated coumarin
(Wiley, 2007)
The infrared spectrum of monomeric unsubstituted coumarin (C9H6O2; 2H-1-benzopyran-2-one), isolated in solid argon at 10 K is presented and assigned. The UV-induced (lambda > 200 nm) unimolecular photochemistry of the ...
NMR spectra, GIA and charge density calculations of five-membered aromatic heterocycles
(Wiley-Blackwell, 2007)
The B3LYP/6-31+G(d) molecular geometry optimized structures of 17 five-membered heterocycles were employed together with the gauge including atomic orbitals (GIAO) density functional theory (DFT) method at the B3LYP/6-31+G(d,p), ...
Synthesis, structural and optical properties of novel borylated Cu(II) and Co(II) metal complexes of 4-benzylaminobiphenylglyoxime
(Elsevier Science Sa, 2007)
4-Benzylaminobiphenylglyoxime ligand and its Cu(II) and Co(II) complexes were prepared. BF2+-bridge containing 4-benzylaminobiphenylglyoxime complexes were obtained by replacing of the bridging protons of the dioxime ...