Güncel Gönderiler: Fen Fakültesi
Toplam kayıt 2379, listelenen: 1361-1380
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Electrochemistry coupled to fluorescence spectroscopy: a new versatile approach
(Elsevier Science Inc, 2004)The efficiency and versatility of a spectroelectrochemical cell was used in order to couple electrochemistry and fluorescence spectroscopy. This new tool was tested and validated through the study of the reduction steps ... -
A new approach to quantum well infrared photodetectors: Staircase-like quantum well and barriers
(Elsevier Science BV, 2006)We present a theoretical investigation of a novel staircase-like quantum well infrared photodetector (QWIP). The proposed structure makes use of quantum wells and barriers with increasing Al content both in the wells and ... -
Synthesis and spectroscopic characterization of new Schiff bases containing the benzo-15-crown-5 moiety
(Molecular Diversity Preservation International, 2004)New crown ether Schiff base derivatives were prepared by the condensation of 4'-formylbenzo-15-crown- 5 or 4'-formyl-5'-hydroxybenzo-15-crown-5 with 1,2-bis(2aminophenoxy)ethane. The structures of these new compounds were ... -
Comparison of adsorption and selectivity characteristics for 4-nitrophenol imprinted polymers prepared via bulk and suspension polymerization
(Marcel Dekker Inc, 2004)This manuscript describes a method for the selective removal of phenolic compounds from aqueous medium by imprinted polymers, which is the noncovalent approach based on both hydrogen bonding and hydrophobic interaction. ... -
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 ... -
Selective separation and preconcentration of cyanide by a column packed with cyanide-imprinted polymeric microbeads
(Elsevier Science BV, 2004)Using the strategy of template polymerization, specific metal-complexing polymer which is poly(methacryloylhistidine-Ni(II)-CN-) (P(MAH-Ni(II)-CN-)) has been prepared. This polymer is able to specifically recognize the ... -
H-1 C-13 NMR and (n)J(CH) coupling constants investigation of 4-Phenylpyridine: A combined experimental and theoretical study
(Elsevier Science BV, 2007)Proton coupled and uncoupled C-13, H-1, DEPT, COSY and HETCOR NMR spectra of 4-Phenylpyridine (4-Phpy) have been reported for the first time except for its H-1 NMR spectrum. In order to provide a precise structural elucidation ... -
The determination of the optical band and optical constants of non-crystalline and crystalline ZnO thin films deposited by spray pyrolysis
(Natl Inst Optoelectronics, 2007)The optical constants and optical band gaps of the non-crystalline and crystalline zinc oxide (ZnO) thin films deposited by the spray pyrolysis method onto glass substrates at the different deposition times have been ... -
Magnetoresistance properties of Co-added MgB2 tapes prepared by PIT method
(Elsevier Science BV, 2007)The (MgB2)(1-x)COx tapes, where x = 0.0, 0.01, 0.03 and 0.05, were prepared using powder-in-tube (PIT) method. The magnetoresistance properties of the samples were investigated under applied magnetic field of 0-6 T. The ... -
Removal of heavy metal ions by dithiocarbamate-anchored polymer/organosmectite composites
(Elsevier Science BV, 2006)In this study, the dithiocarbamate-anchored polymer/organosmectite composites were prepared for the removal of heavy metal ions (lead, cadmium and chromium) from aqueous media containing different amounts of these ions ... -
Influence of the indium incorporation on the structural and electrical properties of zinc oxide films
(Natl Inst Optoelectronics, 2006)Undoped and indium-doped ZnO films have been deposited onto glass substrates by the spray pyrolysis method. The effect of indium incorporation on structural and electrical properties of ZnO films has been investigated. ... -
Hyperbolic Octonion Formulation of Gravitational Field Equations
(Springer/Plenum Publishers, 2013)In this paper, the Maxwell-Proca type field equations of linear gravity are formulated in terms of hyperbolic octonions (split octonions). A hyperbolic octonionic gravitational wave equation with massive gravitons and ... -
Determination of the thickness and optical constants of transparent indium-doped ZnO thin films by the envelope method
(Oficyna Wydawnicza Politechniki Wroclawskiej, 2007)Transparent indium-doped ZnO thin films were deposited by the spray pyrolysis method onto glass substrates. The content of indium in the starting solution was 0.5 at. %. The crystallographic structure of the film was studied ... -
Single-oscillator model and determination of optical constants of spray pyrolyzed amorphous SnO2 thin films
(Springer, 2007)Amorphous SnO2 thin films have been deposited using different spraying times via the spray pyrolysis method. The structure of the films was analyzed by X-ray diffraction and the results obtained showed that the structure ... -
Reformulation of electromagnetism with octonions
(Soc Italiana Fisica, 2006)In this paper, the octonion algebra and its general properties are defined by two different multiplication rules for octonion units. The field equations, potential and Maxwell equations for electromagnetism are investigated ... -
An investigation of symmetry operations with Clifford algebra
(Slovak Acad Sciences Inst Physics, 2004)After presenting Clifford algebra and quaternions, the symmetry operations with Clifford algebra and quaternions are defined. This symmetry operations are applied to a Platonic solid, which is called as dodecahedron. Also, ... -
Effect of Na doping on the microstructures and optical properties of ZnO nanorods
(Elsevier Science Sa, 2013)Undoped ZnO and Na doped ZnO (ZnO: Na) nanorod films have been deposited by sol-gel method using spin coating technique. The effect of Na incorporation on structural, morphological and optical properties of ZnO nanorod ... -
Study of thermal and CH4 adsorption properties
(Springer, 2015)In this study, the adsorption of methane (CH4) on zeolite from Sivas-Yavu region of Turkey and on forms treated with 1 M heavy metal nitrate solutions (AgYZ, Cu YZ and FeYZ) and 1, 3 and 5 M HCl solutions (HYZ, 3HYZ and ... -
Equilibrium and kinetics of biosorption of lead(II) from aqueous solutions by Cephalosporium aphidicola
(Elsevier Science BV, 2006)Biosorption of lead(II) onto Cephalosporium aphidicola was examined and the effects of pH, contact time, biosorbent and lead(II) concentrations and temperature on biosorption were investigated. The nature of the possible ... -
Effect of salt modification and acid activation on ethylene adsorption properties of sepiolite
(Springer, 2013)The adsorption of ethylene (C2H4) on sepiolite from EskiAYehir, Turkey and on its salt modified forms (NaS, KS, CaS and MgS) and treated with 1, 3 and 5 M HCl solutions (SH, S3H and S5H) was investigated. The sepiolite ...
