Yayıncı "Wiley-V C H Verlag GMBH" için listeleme
Toplam kayıt 72, listelenen: 21-40
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Determination of Amlodipine in pharmaceutical formulations by differential-pulse voltammetry with a glassy carbon electrode
(Wiley-V C H Verlag GMBH, 2002)A differential-pulse voltammetric method was developed for the determination of amlodipine based on the oxidation of the dihydropyridine group on the surface of glassy carbon electrode under stationary and rotating conditions. ... -
Determination of dislocation densities in InN
(Wiley-V C H Verlag GMBH, 2012)The magneto-transport measurements, carried out at magnetic fields up to 11 T and in the temperature range between 1.8 K and 300 K, are used to investigate the scattering mechanisms in GaN/InN/AlN double heterojunctions. ... -
Determination of formoterol by capillary electrophoresis and its application to inhaler capsules
(Wiley-V C H Verlag GMBH, 2003)A capillary electrophoretic (CE) method for the determination of formoterol (FOR) in a pharmaceutical preparation is described. Analysis was made in a background electrolyte consisting of 20 % acetonitrile and 50 mM ... -
Determination of the carrier density dependent electron effective mass in InN using infrared and Raman spectra
(Wiley-V C H Verlag GMBH, 2012)The vibrational properties of InN samples grown by molecular beam epitaxy (MBE) technique have been studied using infrared (IR) and Raman scattering spectroscopy at room temperature. In the Raman measurements, the 532?nm ... -
Determination of the in-plane effective mass and quantum lifetime of 2D electrons in AlGaN/GaN based HEMTs
(Wiley-V C H Verlag GMBH, 2011)Magnetoresistance and Hall resistance measurements have been used to investigate the electronic transport properties of AlGaN/GaN based HEMTs. The Shubnikov-de Haas (SdH) oscillations from magnetoresistance, is obtained ... -
Effect of exchange-correlation potential on the plasmon dispersions in a doped symmetrical double quantum well
(Wiley-V C H Verlag GMBH, 2007)We have calculated the plasmon dispersion relations in a doped double quantum well with and without exchange-correlation potential added to the effective potential of the system. The calculations were done for high and low ... -
Effect of substrate temperature on some of the optical parameters of CuInS2 films
(Wiley-V C H Verlag GMBH, 2007)Polycrystalline CuInS2 films have been grown by spray pyrolysis method at different substrate temperatures, a simple method which can produce low cost and highly absorbing samples. Optical characteristics of the CuInS2 ... -
Effects of magnetic field on the terahertz nonlinear optical properties in donor-doped GaAs/AlGaAs quantum wells
(Wiley-V C H Verlag GMBH, 2012)Effects of the magnetic field on nonlinear optical properties at THz range in GaAs/AlGaAs quantum wells doped with donor atoms are investigated. Expressions for the third-order nonlinear optical susceptibilities are obtained ... -
Electrical and optical properties of undoped and In-doped ZnO thin films
(Wiley-V C H Verlag GMBH, 2007)Transparent conducting undoped and indium-doped zinc oxide (ZnO) thin films have been deposited by the spray pyrolysis method at 350 degrees C substrate temperature. X-ray diffraction spectra of the films have shown that ... -
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 ... -
Electron and hole energy relaxation rates in GaInNAs/GaAs quantum wells via deformation potential and piezoelectric scattering
(Wiley-V C H Verlag GMBH, 2013)The two-dimensional (2D) electron and hole energy relaxation associated with acoustic phonon emission in n- and p-type modulation doped Ga0.7In0.3NyAs1y/GaAs quantum wells has been investigated experimentally using ... -
Essential oil composition of sea fennel (Crithmum maritimum) from Turkey
(Wiley-V C H Verlag GMBH, 2001)Constituents of essential oils of sea fennel (Crithmum maritimum L.) collected in different localities of Turkey in 1997 and 1998 have been identified by GC/MS. The effects of collection time and locality on the oil content ... -
Furanocoumarin Content, Antioxidant Activity, and Inhibitory Potential of Heracleum verticillatum, Heracleum sibiricum, Heracleum angustisectum, and Heracleum ternatum Extracts against Enzymes Involved in Alzheimer's Disease and Type II Diabetes
(Wiley-V C H Verlag GMBH, 2019)Hexane extracts of Heracleum verticillatum, H. sibiricum, H. angustisectum, and H. ternatum were studied for their furanocoumarin content antioxidant potential and acetylcholinesterase and -amylase inhibitory activities. ... -
High resolution transmission electron microscopy of grain boundaries between hexagonal boron nitride grains in Si3N4-SiC particulate composites
(Wiley-V C H Verlag GMBH, 2000)High resolution transmission electron microscope observations of grain boundaries in hexagonal boron nitride in which adjacent grains are rotated with respect to one another about either <2 (1) over bar (1) over bar 0> or ... -
HPLC determination of cefprozil in tablets using monolithic and C-18 silica columns
(Wiley-V C H Verlag GMBH, 2011)Cefprozil (CPZ) is a second-generation semi-synthetic cephalosporin antibiotic that commonly exists as the mixture of Z and E diastereoisomers, at the ratio of approximately 9:1. A novel reversed-phase HPLC method for the ... -
I-V characterization of a staircase quantum well infrared photodetector
(Wiley-V C H Verlag GMBH, 2011)In this work, a quantum well infrared photodetector structure which consists of three different well thicknesses with three different barrier compositions producing a staircase-like conduction band profile with the reputation ... -
Investigation of carbon produced by methane pulsed discharge
(Wiley-V C H Verlag GMBH, 2007)Pulsed discharges of methane gas at atmospheric pressure were generated using high voltage power supply (20 kV-25 kHz) to produce the carbon. The pulsed discharge of methane gas was generated between two sharp wolfram ... -
Kinetic studies on electrochemical antimony removal from concentrated sulfuric acid systems
(Wiley-V C H Verlag GMBH, 2007)The aim of this study was to separate antimony from its acidic aqueous solution with an electrochemical method by cathodic deposition. For this purpose it is essential to know the electrochemical behavior of antimony. ... -
Longitudinal polar optical phonons in InN/GaN single and double heterostructures
(Wiley-V C H Verlag GMBH, 2011)Longitudinal optical phonon energy in InN epi-layers has been determined independently from the Raman spectroscopy and temperature dependent Hall mobility measurements. Raman spectroscopy technique can be used to obtain ... -
Multi-crystalline silicon solar cells with metal-assisted nano-texturing using HNO3 as hole injection agent
(Wiley-V C H Verlag GMBH, 2016)In this study, metal-assisted etching (MAE) with nitric acid (HNO3) as a hole injecting agent has been employed to texture multi-crystalline silicon wafers. It was previously proven that addition of HNO3 enabled control ...