Yayın tarihi için Makale Koleksiyonu listeleme
Toplam kayıt 1058, listelenen: 21-40
-
Hamilton formulation for the analysis of RLC circuits
(Physics Essays Publication, 2002)The Hamiltonian formulation well known in classical mechanics is applied to RLC circuits. The flux linkages for the inductances are assumed to be the generalized momenta (conjugate momenta), and the Hamiltonian function ... -
Preparation and characterization of the newly synthesized metal-complexing-ligand N-methacryloylhistidine having PHEMA beads for heavy metal removal from aqueous solutions
(Wiley-V C H Verlag GMBH, 2002)The aim of this study was to investigate in detail the performance for removal of heavy metal ions of beads composed of poly(2-hydroxyethyl methacrylate) (pHEMA) to which N-methacryloyhistidine (MAH) was copolymerized. The ... -
Electropolymerization and in situ sulfonation of aniline in water-acetonitrile mixture containing FSO3H
(Elsevier Science Sa, 2002)In situ sulfonation reaction of aniline was carried out in water and water-acetonitrile mixture by changing both aniline and fluorosulfonic acid (FSO3H) concentrations. The optimum conditions for the polymer formation was ... -
Poly(hydroxyethyl methacrylate-co-methacrylamidoalanine) membranes and their utilization as metal-chelate affinity adsorbents for lysozyme adsorption
(Vsp BV, 2002)Different adsorbents have been reported in the literature for protein purification. The authors have developed a novel and new approach to obtain high protein adsorption capacity utilizing a 2-methacrylamidoalanine-containing ... -
Preparation of poly(hydroxyethyl methacrylate-co-methacrylamidohistidine) beads and its design as a affinity adsorbent for Cu(II) removal from aqueous solutions
(Elsevier Science BV, 2002)Different metal-complexing ligands carrying synthetic adsorbents have been reported in the literature for heavy metal removal. We have developed a novel and new approach to obtain high metal adsorption capacity utilizing ... -
Preparation of cibacron blue F3GA-attached polyamide hollow fibers for heavy metal removal
(John Wiley & Sons Inc, 2002)Dye-affinity adsorption has been used increasingly for heavy metal removal. Synthetic hollow fibers have advantages as support matrices in comparison to conventional bead supports because they are not compressible and they ... -
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) ... -
Quantum chemical studies on some 1,2,4-triarylsubstituted imidazoles
(Elsevier Science BV, 2002)The geometries, proton affinities and thermodynamic properties of some 1,2,4-triarylsubstituted imidazole derivatives were calculated with full geometry optimization using AM1 and PM3 methods in aqueous phase. A possible ... -
Investigation of acid-base behaviour of some 2-pyridylbenzimidazoles using semi-empirical methods
(Elsevier Science BV, 2002)Acid-base behaviour of some 2-(n'-pyridyl) benzimidazoles (n' = 2,3,4) have been studied in order to search the protonation site and to predict pK(a) values of these molecules both in gas and aqueous phases using semi-empirical ... -
Heavy metal ion adsorption properties of methacrylamidocysteine-containing porous poly(hydroxyethyl methacrylate) chelating beads
(Multi Science Publ Co LTD, 2002)Details of the adsorption performance of poly(2-hydroxyethylmethacrylate-methacrylamidocysteine) [p(HEMA-MAC)] beads towards the removal of heavy metal ions from aqueous solution were studied. The metal-complexing ligand ... -
The acidities of some indoles
(Elsevier Science BV, 2002)We wish to present an experimental and theoretical study for the estimation of pK(a) values of some 1-, 2- and 1,2-substituted indoles in aqueous solution by spectroscopic and semiempirical methods. The all possible ... -
Electrochemical polymerization of acetylene with copper catalyst on platinum and copper electrodes
(Elsevier Science Sa, 2002)Acetylene was electrochemically polymerized cathodically at -0.60 V (versus Ag/AgCl) in the presence of copper(I)perchlorate catalyst in acetonitrile containing tetrabutylammonium perchlorate (TBAP) at room temperature ... -
Comparison of adsorption performances of metal-chelated polyamide hollow fibre membranes in lysozyme separation
(Elsevier Science BV, 2002)Commercially available microporous polyamide hollow fibres are modified by acid hydrolysis to activate the reactive groups and subsequently binding of the ligand, i.e. Cibacron Blue F3GA. Then the Cibacron Blue F3GA-derived ... -
Affinity separation of plasma proteins using a newly synthesized methacrylamidoalanine incorporated porous pHEMA membranes
(Marcel Dekker Inc, 2002)In this study, we synthesized a novel adsorbent to obtain high protein-adsorption capacity utilizing 2-methacrylamidoalanine (MAAL) containing membrane. Amino acid-ligand MAAL was synthesized by using methacrylochloride ... -
Adsorption of Ni2+ from aqueous solutions by novel polyethyleneimine-attached poly(p-chloromethylstyrene) beads
(John Wiley & Sons Inc, 2002)In this study Ni2+ adsorption properties of polyethyleneimine (PEI)-attached poly(p-chloromethylstyrene) (PCMS) beads were investigated. Spherical beads with an average size of 186 gm were obtained by the suspension ... -
Electrochemical synthesis of self-doped polyaniline in fluorosulfonic acid/acetonitrile solution
(Elsevier Science Sa, 2002)Electrochemical formation of self-doped sulfonated polyaniline (SPAN) was carried out in acetonitrile-containing anhydrous fluorosulfonic acid (FSO3H). Fluorosulfonic acid was used as both sulfonation reagent for aniline ... -
Biquaternionic representations of angular momentum and Dirac equation
(Slovak Acad Sciences Inst Physics, 2003)In the present article, after defining biquaternions, the general properties of biquaternion's algebra are introduced. The matrix representations of biquaternions are presented, as well. Then, the biquaternionic angular ... -
The quaternionic energy conservation equation for acoustic
(Slovak Acad Sciences Inst Physics, 2003)After introducing the quaternions and its algebra, the equations of the linear acoustics are defined. The local conservation equation for energy of the linear acoustics using quaternions and a quaternionic first-order ... -
Dual quaternionic reformulation of electromagnetism
(Slovak Acad Sciences Inst Physics, 2003)It can be said that Maxwell's equations are one of the well-known equations of Physics. Despite the fact that this equations are more than hundred years old (1865), they still are the cornerstone of electrodynamics. Although ... -
Electrochemical preparation of poly(2-bromoaniline) and poly(aniline-co-2-bromoaniline) in acetonitrile
(John Wiley & Sons Inc, 2003)Electrochemical preparation of poly(2-bromoaniline) (PBrANI) and poly(aniline-co-2-bromoaniline) [P(An-co-2-BrAn)] was carried out in an acetonitrile solution containing tetrabutylammonium perchlorate (TBAP) and perchloric ...