Güncel Gönderiler: Makale Koleksiyonu
Toplam kayıt 1058, listelenen: 221-240
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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 ... -
Sol-gel derived nanostructure undoped and cobalt doped ZnO: Structural, optical and electrical studies
(Elsevier Science Sa, 2013)Nanostructure ZnO and ZnO:Co films were deposited onto borofloat glass substrates by the sol-gel method using spin coating technique. X-ray diffraction (XRD) study was used to investigate the effects of cobalt dopant on ... -
A comparative adsorption study of C2H4 and SO2 on clinoptilolite-rich tuff: Effect of acid treatment
(Elsevier Science BV, 2013)In this study, ethylene (C2H4) and sulphur dioxide (SO2) adsorption properties of clinoptilolite tuff from Gordes, Turkey and that of acid treated forms were studied at 293 K using volumetric apparatus up to 38 and 100 ... -
Electrochemical copolymerization of aniline and anilinesulfonic acids in FSO3H/acetonitrile solution
(John Wiley & Sons Inc, 2002)The effects of 2-aminobenzenesulfonic acid (orthanilic acid), 3-aminobenzenesulfonic acid (metanilic acid), and 4-aminobenzenesulfonic acid (sulfanilic acid) on the electropreparation and properties of polyaniline (PANI) ... -
Space-time algebra for the generalization of gravitational field equations
(Indian Acad Sciences, 2013)The Maxwell-Proca-like field equations of gravitolectromagnetism are formulated using space-time algebra (STA). The gravitational wave equation with massive gravitons and gravitomagnetic monopoles has been derived in terms ... -
Pseudospin Symmetry in Trigonometric Poschl-Teller Potential
(World Scientific Publ Co Pte LTD, 2012)We investigated the analytical (s) over bar -wave solutions of Dirac equation for trigonometric Poschl-Teller (PT) potential under the pseudospin symmetry condition. The energy eigenvalues equation and corresponding wave ... -
FT-IR spectroscopic study on some Hofmann-T-d type complexes: Ni(4-Phenylpyridine)(2)M(CN)(4) (M = Cd or Hg)
(Walter De Gruyter GMBH, 2005)New Hofmann-T-d type complexes in the form of Ni(4-Phenylpyridine)(2)M(CN)(4) (M = Cd or Hg) were prepared in powder form and their infrared spectra are reported in the region of 4000200 cm(-1). From the spectral findings, ... -
Gauge transformation and electromagnetism with biquaternions
(Edp Sciences S A, 2006)After de. ning biquaternions with complex numbers, the algebra of biquaternions and some properties are introduced. Maxwell's equations without sources in the dimensionless form are given. Then Maxwell's equations are ... -
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 ... -
Adsorption of acid dyes from aqueous solutions onto acid-activated bentonite
(Academic Press Inc Elsevier Science, 2004)The adsorption of two dyes, namely, Acid Red 57 (AR57) and Acid Blue 294 (AB294), onto acid-activated bentonite in aqueous solution was studied in a batch system with respect to contact time, pH, and temperature. Acidic ... -
Structural stabilities of N-permethylated tetracations of meso-tetrakis(4-pyridyl)porphyrin, meso-tetrakis[4-(dimethylamino)phenyl]porphyrin, and their manganese(III) complexes toward hydrogen peroxide, tert-butylhydroperoxide, and sodium hypochlorite
(Soc Porphyrins & Phthalocyanines, 2004)The degradation rate constants of the tetracations 5,10,15,20-tetrakis(N-methylpyridinium-4-yl)porphyrin and 5,10,15,20-tetrakis(N,N,N-trimethylanilinium-4-yl)porphyrin as well as their manganese(III) complexes toward the ... -
Adsorption of acid dyes from aqueous solutions onto sepiolite
(Marcel Dekker Inc, 2004)This research deals with an investigation of the adsorption of two acid dyes, namely Acid Red 57 (AR57) and Acid Blue 294 (AB294) onto sepiolite. Batch kinetics and isotherm studies were carried out. The results indicate ...
