Ara
Toplam kayıt 100, listelenen: 61-70
Microwave-assisted synthesis of alginate-g-polyvinylpyrrolidone copolymer and its application in controlled drug release
(Springer, 2014)
The aim of this study is to synthesize graft copolymer (NaAlg-g-PVP) in microwave oven and prepare pH-responsive beads with high entrapment efficiency. For this purpose, PVP was grafted onto sodium alginate using microwave ...
Adsorption of chromium(VI) metal ions from aqueous solution using hexagonal ZnO particles: Equilibrium, kinetic and thermodynamic modelling studies
(Wiley, 2014)
Zinc oxide powders having hexagonal plate particles were prepared by homogeneous precipitation from boiling aqueous solutions that contained excess urea and 0.075 (Z075) and 0.300 (Z300) M Zn2+. The equilibrium, kinetic ...
Factorial Design Optimization of Solid-Phase Microextraction for High-Performance Liquid Chromatography-Ultraviolet Spectrometry Analysis of Polycyclic Aromatic Hydrocarbons in Cigarette Filter Tar
(Taylor & Francis Ltd, 2014)
A simple and rapid procedure for the determination of polycyclic aromatic hydrocarbons (PAHs) in cigarette filter tar using solid-phase microextraction (SPME) was developed. The analysis was carried out using high-performance ...
Electrochemical copper (II) sensor based on chitosan covered gold nanoparticles
(Springer, 2014)
This study outlines a new sensing platform based on glassy carbon electrodes modified by gold nanoparticles (AuNPs) for the determination of heavy metal. A glassy carbon electrode was modified by chitosan stabilized AuNPs. ...
In vitro genotoxic effects of ZnO nanomaterials in human peripheral lymphocytes
(Springer, 2014)
In this study, possible genotoxic effects of zinc oxide (ZnO) nanoparticles were investigated in cultured human peripheral lymphocytes by using chromosome aberrations and micronucleus assays (MN). For this purpose, the ...
Immobilization of a- amylase on reactive modified fiber and its application for continuous starch hydrolysis in a packed bed bioreactor
(Wiley-V C H Verlag Gmbh, 2014)
In this study, the enzyme -amylase was immobilized on reactive modified poly (ethylene terephthalate) fiber. The activities of free -amylase and immobilized -amylase were compared in a batch starch hydrolysis system. Optimum ...
Removal of Common Heavy Metals from Aqueous Solutions by Waste Salvadora persica L. Branches (Miswak)
(Springer International Publishing Ag, 2014)
The adsorption ability of miswak (Salvadora persica L.) waste was investigated for the removal of common heavy metals; Pb(II), Cu(II), Ni(E) and Cd(II), from aqueous systems. The miswak mainly consists of saponins, tannins, ...
Increasing the crystallite and conductivity of polypyrrole with dopant used
(Springer Heidelberg, 2014)
The chemical polymerization method is very convenient for obtaining a plurality of the polymer. Chemical synthesizes of polypyrrole (PPy) were performed in acetonitrile solutions containing different dopants: dodecylbenzene ...
Modification of glassy carbon electrode in basic medium by electrochemical treatment for simultaneous determination of dopamine, ascorbic acid and uric acid
(Elsevier Science Sa, 2013)
In this paper, a modified glassy carbon electrode was prepared by electrochemical method in basic media (0.5 M NaOH solutions) and was used to electrochemically detect dopamine (DA), ascorbic acid (AA), uric acid (UA) and ...
Synthesis and Characterization of Chitosan/Polyvinylpyrrolidone/Zeolite Composite by Solution Blending Method
(Springer, 2014)
Polymer/clay composites have been studied for several decades; in the study, polymer/zeolite composite beads have been prepared by a simple solution blending method using chitosan, polyvinylpyrrolidone and zeolite particles ...