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Now showing items 21-30 of 43
Deciduous tree leaves in trace elements biomonitoring: A contribution to methodology
(Elsevier Science Bv, Amsterdam, 2011)
Air quality biomonitoring using plant leaves has been widely applied to assess the effects of atmospheric pollution. Although practiced for many years, it has not given completely satisfactory data, due to different and ...
Novel properties of PES fabrics modified by corona discharge and colloidal TiO2 nanoparticles
(Wiley, Hoboken, 2011)
The objective of this study was to highlight the potential application of the corona discharge at atmospheric pressure for the surface activation of polyester (PES) fabrics in order to improve the binding efficiency of ...
Glass transition and polymer dynamics in silver/poly(methyl methacrylate) nanocomposites
(Pergamon-Elsevier Science Ltd, Oxford, 2011)
Dynamic mechanical-thermal analysis (DMTA), differential scanning calorimetry (DSC), thermally stimulated depolarization currents (TSDC) and, mainly, broadband dielectric relaxation spectroscopy (DRS) were employed to ...
Synthesis and characterization of silver/poly(N-vinyl-2-pyrrolidone) hydrogel nanocomposite obtained by in situ radiolytic method
(Pergamon-Elsevier Science Ltd, Oxford, 2011)
This work describes radiolytic synthesis of silver nanoparticles (Ag NPs) within the poly(N-vinyl-2-pyrrolidone) (PVP) hydrogel. The hydrogel matrix was obtained by gamma irradiation-induced cross-linking, while the in ...
Surface Characterization of Iron-Modified Sepiolite by Inverse Gas Chromatography
(Amer Chemical Soc, Washington, 2011)
Inverse gas chromatography at infinite and finite surface coverages was applied to evaluate the surface properties of an iron-modified sepiolite sorbent, Fe-sepiolite. The adsorptions of different nonpolar and polar probes ...
Enhanced ammonia synthesis in multifunctional reactor with in situ adsorption
(Elsevier, Amsterdam, 2011)
A steady-state, one-dimensional mathematical model for a multifunctional reactor with in situ adsorption for ammonia synthesis is developed. The model represents integrated ammonia catalytic equilibrium reaction with ammonia ...
Synthesis of antimicrobial monophase silver-doped hydroxyapatite nanopowders for bone tissue engineering
(Elsevier, Amsterdam, 2011)
Monophase silver-doped hydroxyapatite (AgxCa10-x(PO4)(6)(OH)(2); 0.002 lt = x lt = 0.04) nanoparticles were prepared using a neutralization method and investigated with respect to potential medical applications. This ...
Effect of Alloy Purity on Fracture Behavior of Overaged 7000 Alloy Plates
(International Journal of Damage Mechanics, 2011)
The article deals with the relations between microstructural parameters, microscopic fracture mechanisms, and resultant plane-strain fracture toughness, K(IC), of hot-forged 7000 alloy plates in overaged condition. Three ...
Multifunctional Properties of Polyester Fabrics Modified by Corona Discharge/Air RF Plasma and Colloidal TiO2 Nanoparticles
(Wiley, Hoboken, 2011)
In this study the possibility of tailoring the textile nanocomposite materials based on the polyester fabric and TiO2 nanoparticles that can simultaneously provide desirable level of antibacterial activity, UV protection, ...
Behaviour of small cracks during their propagation from Vickers indentations in coarse-grain steel: An experimental investigation
(Elsevier Sci Ltd, Oxford, 2011)
In this investigation we look at the influence of the local residual stresses caused by Vickers-pyramid indenting on the initiation and early propagation of small cracks from indentations in coarse-grain martensitic steel. ...