Ara
Toplam kayıt 53, listelenen: 31-40
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 ...
Determination of paracetamol based on electropolymerized-molecularly imprinted polypyrrole modified pencil graphite electrode
(Elsevier Science Sa, 2007)
Preparation of a molecularly imprinted polymer (MIP) film and its recognition property for paracetamol are investigated. The polypyrrole (PPy) film was prepared by the cyclic voltammetric deposition of pyrrole (Py) in the ...
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. ...
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 ...
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 ...
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 ...
Synthesis of cholesterol imprinted polymeric particles
(Elsevier Science BV, 2007)
The aim of this study is to prepare cholesterol-imprinted polymeric particles. N-Methacryloyl-(L)-tyrosinemethylester (MAT) was chosen as the complexing monomer. In the first step, functional monomer MAT was synthesized ...
Electrical and optical properties of fluorine-doped CdO films deposited by ultrasonic spray pyrolysis
(Elsevier Science BV, 2007)
The CdO:F samples have been deposited onto microscope glass substrates at 250 degrees C by ultrasonic spray pyrolysis method. With the incorporation of fluorine into CdO, the direct optical transition has shifted towards ...
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 ...
Mimicking receptor for methylmercury preconcentration based on ion-imprinting
(Elsevier Science BV, 2007)
Solid-phase extraction (SPE) based on molecularly imprinted polymers (MIPs) were used to develop selective separation and preconcentration for methylmercury ion from complex matrixes. In this study, an ion-imprinting polymer ...