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Biological Effects of Echinacea Purpurea on Human Blood Cells
(Arhiv za higijenu rada i toksikologiju, 2009)
The aim of this study was to investigate radioprotective properties of Echinacea purpurea tablets in vivo. We analysed lymphocyte chromosome aberrations (CA), micronuclei (MN), apoptosis of leukocytes and haematological ...
Gel production, oxidative degradation and dielectric properties of isotactic polypropylene irradiated under various atmospheres
(Polymer Degradation and Stability, 2009)
In this work, changes in structure and physical properties of stabilized isotactic polypropylene (iPP) were created by gamma irradiation, up to a dose of 700 kGy, in different media: air, deionised distilled (DD) water and ...
Derivative polynomials and closed-form higher derivative formulae
(Applied Mathematics and Computation, 2009)
In a recent paper, Adamchik [1] expressed in a closed-form symbolic derivatives of four functions belonging to the class of functions whose derivatives are polynomials in terms of the same functions. In this sequel, simple ...
Evaluations of some classes of the trigonometric moment integrals
(Journal of Mathematical Analysis and Applications, 2009)
Four classes of the trigonometric moment integrals are evaluated in closed form in a simple and unified manner by making use of the contour integration in conjunction with the Cauchy integral theorem. In all cases, the ...
Gap and dark solitons in discrete photorefractive media with intensity-resonant nonlinearity
(Applied Physics. B: Lasers and Optics, 2009)
Light propagation in one-dimensional nonlinear waveguide arrays with self-defocusing intensity-resonant nonlinearity is investigated theoretically. We study thoroughly conditions for existence and stability of both gap and ...
The influence of molecular orientation on the crosslinking/oxidative behaviour of iPP exposed to gamma radiation
(European Polymer Journal, 2009)
This paper presents a study of the influence of structural peculiarities, uniaxial orientation and fibrillar structure on the radiation-induced changes in iPP. For the purposes of this study, iPP was oriented via solid-state ...
Ferromagnetic behaviour of the Zn-Mn-O system
(Journal of the Serbian Chemical Society, 2009)
Polycrystalline Zn-Mn-O samples with nominal manganese concentrations x = 0.0 1, 0.04 and 0.10 were synthesized by a solid state reaction route using (ZnC(2)O(4 center dot)2H(2)O)(1-x) and (MnC(2)O(4)-2H(2)O)(x). Thermal ...
Determination of Surface Properties of Various Oxides and Sulfides by Inverse Gas Chromatography
(Materials and Manufacturing Processes, 2009)
The surface properties of various oxides (ZrO(2) and Fe(3)O(4)) and sulfides (HgS and FeS) were investigated by the inverse gas chromatography method (IGC). The retentions of several organics were measured in the temperature ...
Ab initio study of hyperfine interaction parameters in C14 Hf and Zr Laves-phase compounds
(Physical Review B: Condensed Matter and Materials Physics, 2009)
Using ab initio density-functional theory approach the electric field gradients (EFGs) and hyperfine magnetic fields (HMFs) for the isostructural C14 Laves-phase compounds HfCr(2), HfFe(2), HfMn(2), ZrCr(2), and ZrMn(2) ...
Morphological, structural and magnetic properties of alpha-Fe2O3 nanoparticles in an amorphous alumina matrix obtained by aqueous combustion method
(Journal of Alloys and Compounds, 2009)
We report on morphological, structural and magnetic properties of alpha-Fe2O3 nanoparticles in an amorphous alumina matrix synthesized by aqueous combustion method. The sample was characterized by X-ray powder diffraction ...