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Closed-form evaluation of some families of definite tangent and secant integrals
(Integral Transforms and Special Functions, 2007)
Several families of definite integrals involving the tangent or secant function have been evaluated in closed form by making use of the elementary arguments. Some of them are expressible in terms of a finite combination ...
Influence of metal and ligand types on stacking interactions of phenyl rings with square-planar transition metal complexes
(Central European Journal of Chemistry, 2007)
In order to find out whether metal type influences the stacking interactions of phenyl rings in square-planar complexes, geometrical parameters for Cu, Ni, Pd and Pt complexes, with and without chelate rings, were analyzed ...
Separation of tungsten and rhenium on alumina in dynamic conditions
(Journal of Radioanalytical and Nuclear Chemistry, 2007)
The separation of tungstate and perrhenate anions on alumina from aqueous solutions of sodium chloride was investigated in dynamic conditions. The breakthrough curves for W and Re as the function of the ratio of their ...
On bright and dark breathers in lattices with saturable nonlinearity
(Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics, 2007)
The moving bright and dark localized modes in one-dimensional optical lattices with saturable nonlinearity are considered with respect to the grand canonical free energy concept and linear stability analysis of the eigenvalue ...
Determination of the specific alpha activity of thick sources with a large area ZnS(Ag) scintillation detector
(Journal of Environmental Radioactivity, 2007)
A method for determining the specific alpha activity of thick sources using a large area ZnS(Ag) scintillation detector is presented. In this method a quadratic relationship between the detector response and window thickness ...
Effects of noradrenaline and serotonin reuptake inhibitors on pituitary-adrenocortical and sympatho-adrenomedullar system of adult rats
(Neuroendocrinology Letters, 2007)
OBJECTIVE: To estimate the influence of long-term treatment with noradrenergic and serotonergic reuptake inhibitors on activity of pituitary-adrenocortical and sympatho-adrenomedullar systems in animals, we compared the ...
Multiple charged nitrogen ion beam irradiation of fullerene thin films
(Fullerenes Nanotubes and Carbon Nanostructures, 2007)
In this work, the results of structural modification of fullerene thin films bombarded by multiple charged nitrogen ions have been reported. The properties of as-deposited and irraditated fullerene thin films have been ...
Antioxidant, antimicrobial and genotoxicity screening of hydro-alcoholic extracts of five serbian Equisetum species
(Plant Foods for Human Nutrition, 2007)
The hydro-alcoholic extracts of five Equisetum species, E. arvense L., E. sylvaticum L., E. fluviatile L., E. palustre L. and E. telmateia Ehrh., growing-wild in Serbia were evaluated for their genotoxicity, antimicrobial ...
Cretaceous-Paleogene boundary Fish Clay at Hojerup (Stevns Klint, Denmark): trace metals in kerogen
(Bulletin de La Societe Geologique de France, 2007)
Geochemical analyses of trace metals (Ir, Ni, Co, Cr, Zn, Au and Pb) and rare earth elements (La, Ce, Nd, Sm, Eu, Tb, Yb and Lu) in kerogen of the black marl at the Cretaceous-Paleogene boundary Fish Clay at Hojerup have ...
Emission intensity enhancement of DC arc plasma induced by external oscillating magnetic field
(Contributions to Plasma Physics, 2007)
Direct current (dc) arc plasma with continuous aerosol supply was coupled with an external oscillating magnetic field of a few tens of mT and a frequency of up to 1 kHz. Such configuration was used to alter the plasma-related ...