Yayın tarihi için Makale Koleksiyonu listeleme
Toplam kayıt 1058, listelenen: 41-60
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Removal of heavy metal ions using the fungus Penicillium canescens
(Multi Science Publ Co LTD, 2003)The potential use of the fungus Penicillium canescens for the removal of cadmium, lead, mercury and arsenic ions from aqueous solutions was evaluated in this study. Equilibrium biosorption of the heavy metal ions was ... -
Biosorption of cadmium, lead, mercury, and arsenic ions by the fungus Penicillium purpurogenum
(Marcel Dekker Inc, 2003)The potential use of the fungus Penicillium purpurogenum to remove cadmium, lead, mercury, and arsenic ions from aqueous solutions was evaluated. Biosorption of heavy metal ions reached equilibrium in 4 h. Heavy metal ions ... -
Electrochemical preparation of soluble sulfonated polymers and aniline copolymers of aniline sulfonic acids in dimethylsulfoxide
(John Wiley & Sons Inc, 2003)Fully sulfonated polyaniline was produced during the electrochemical polymerization of orthanilic, metanilic, and sulfanilic acids in dimethylsulfoxicle (DMSO). The dry conductivity values of the polymers obtained from the ... -
Novel methacryloylamidophenylalanine functionalized porous chelating beads for adsorption of heavy metal ions
(John Wiley & Sons Inc, 2003)The purpose of this study was to investigate in detail the adsorption performance of poly(2-hydroxyethylmethacrylate-methacryloylamidophenylalanine) [p(HEMA-MAPA)] beads. The metal-complexing comonomer MAPA was synthesized ... -
Preconcentration of copper on ion-selective imprinted polymer microbeads
(Elsevier Science BV, 2003)Molecular recognition-based separation techniques have received much attention in various fields because of their high selectivity for target molecules. Molecular imprinting has been recognized as a promising technique for ... -
Removal of aluminium by Alizarin Yellow-attached magnetic poly(2-hydroxyethyl methacrylate) beads
(Elsevier Science BV, 2003)Since the discovery of the implication of aluminium in dialysis encephalopathy, much progress has been made in the preparation of dialysis water from which the metal is now virtually excluded. In this study, Alizarin ... -
Metal-complexing ligand methacryloylamidocysteine containing polymer beads for Cd(II) removal
(Elsevier Science BV, 2003)Different metal-complexing ligands carrying synthetic and natural 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 ... -
A theoretical study of substituent effects on tautomerism of 2-hydroxybenzimidazoles
(Springer-Verlag, 2003)The geometries, relative stabilities of some 4(7) and 5(6) substituted 2-hydroxybenzimidazole derivatives were calculated with full geometry optimization using AM1 and PM3 in aqueous phase. With the exception of molecules ... -
A theoretical search on metal-ligand interaction mechanism in corrosion of some imidazolidine derivatives
(Elsevier Science BV, 2003)The interaction mechanism of some imidazolidine derivatives with metallic Zn in gas phase, using semiempirical methods, was studied at elevated temperature and the obtained data were used to search a possible correlation ... -
Electrochemical synthesis of poly(2-iodoaniline) and poly(aniline-co-2-iodoaniline) in acetonitrile
(John Wiley & Sons Inc, 2003)Poly(2-iodoaniline) (PIANI) and poly(aniline-co-2-iodoaniline) [P(An-co-2-IAn)] were synthesized by electrochemical methods in acetonitrile solution containing tetrabutylammonium perchlorate (TBAP) and perchloric acid ... -
Inhibition of the corrosion of low carbon steel in acidic solution by selected polyelectrolytes and polymers
(Emerald Group Publishing Limited, 2003)The inhibiting effects of 2,6-ionen and 2,10-ionen type polyvinylbenzyltrimethylammonium chloride, and latex, on low carbon steel in hydrochloric acid solution was investigated by potentiodynamic polarisation measurements ... -
Mercury removal from synthetic solutions using poly (2-hydroxyethylmethacrylate) gel beads modified with poly (ethyleneimine)
(Elsevier Science BV, 2003)In this study. the Hg2+ adsorption-desorption properties of poly(ethyleneimine) (PEI)-attached poly(2-hydroxyethylmethacry late) (PHEMA) beads were investigated. Spherical PHEMA beads with an average size of 150-200 mum ... -
Spray pyrolysis yöntemiyle elde edilen $CuCd_{0.8}InS_{2.8}$ filminin optik özellikleri
(2004)Bu çalışmada, spray pyrolysis yöntemiyle 225°C taban sıcaklığında elde edilen $CuCd_{0.8}InS_{2.8}$ yarıiletken fıliminin optik özellikleri incelenmiştir. Absorpsiyon spektrumu ölçümlerinden filmin direkt bant geçişli ... -
Spray pyrolysis yöntemiyle elde edilen $Cd_{0.73}Zn_{0.27}S_{0.8}Se_{0.2}$ yarıiletken filminin optik özellikleri
(2004)Bu çalışmada, $Cd_{0.73}Zn_{0.27}S_{0.8}Se_{0.2}$ filmi spray pyrolysis yöntemi ile cam tabanlar üzerine 225°C taban sıcaklığında elde edilmiştir. Filmin yasak enerji aralığının direkt bant geçişli olduğu ve değerinin ... -
Isıl yolla uyarlanmış akım ile aktivasyon enerjisinin belirlenmesi
(2004)Bu çalışmada, ısıl yolla uyarılmış akım ile yarıiletken ve yalıtkan materyallerde gözlenen tuzak seviyelerinin aktivasyon enerjilerini belirlemek için kullanılan yöntemler incelenmiştir. -
Speech and language disorders in patients with cerebral palsy [Serebral palsi·li· hastalarda di·l ve konuşma bozukluklari]
(2004)The aim of this study was to evaluate the speech and language disorders of patients with cerebral palsy. A total of 48 patients including 23 girls and 25 boys with spastic cerebral palsy were included in the study. Thirteen ... -
Ni(II) ion-imprinted solid-phase extraction and preconcentration in aqueous solutions by packed-bed columns
(Elsevier Science BV, 2004)Solid-phase extraction (SPE) columns packed with materials based on molecularly imprinted polymers (MIPs) were used to develop selective separation and preconcentration for Ni(II) ion from aqueous solutions. SPE is more ... -
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 ... -
An investigation of the influence of the pairing correlations on the properties of the isobar analog resonances in A=208 nuclei
(Indian Academy Sciences, 2004)Within the quasi-particle random phase approximation (QRPA), the method of the self-consistent determination of the isovector effective interaction which restores a broken isotopic symmetry for the nuclear part of the ... -
Electrochemical polymerization of fluoro- and chloro-substituted anilines and copolymers with aniline
(John Wiley & Sons Inc, 2004)Poly(2-fluroaniline) and poly(2-chloroaniline) were synthesized by an electrochemical method in an acetonitrile solution containing tetrabutylammonium perchlorate and perchloric acid. Also, the electrochemical copolymerization ...