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Приказ резултата 11-20 од 77
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 ...
Dense and near-net-shape fabrication of Si3N4 ceramics
(Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing, 2009)
With silicon nitride significant progress has been made in order to search for fully dense, strong, reliable structural ceramics to find wide use in applications at high temperatures which are allowing new and innovative ...
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) ...
Spatiotemporal dynamics and transport reduction in helical magnetic configuration
(Physics of Plasmas, 2009)
Effects of multihelicity confinement magnetic fields on turbulent transport and zonal flows are investigated by means of spatiotemporal analysis of gyrokinetic Vlasov simulation results for the ion temperature gradient ...
Antioxidant properties of raspberry seed extracts on micronucleus distribution in peripheral blood lymphocytes
(Food and Chemical Toxicology, 2009)
This study addresses in vitro effects of raspberry (Rubus idaeus) seed extracts (RSE) on the frequency of micronuclei. We evaluated the effects of three different extracts (50%, 80%, and 100% methanol) in doses of 1.4, ...
Morphology, mechanical and thermal properties of composites of polypropylene and nanostructured wollastonite filler
(Polymer Testing, 2009)
Nanostructured wollastonite was synthesized by a sol-gel method and then used as a filler for polypropylene (PP). The obtained wollastonite particles were investigated using XRD, TEM and FTIR techniques. Non-isothermal ...
Crystal structure of Ce-doped CaMnO3 perovskite
(Ceramics International, 2009)
The synthesis and crystal structure of Ce-doped CaMnO3 perovskite has been investigated. Two powders with nominal compositions Ca0.5Ce0.5MnO3 and CaMn0.5Ce0.5O3 were prepared using a modified glycine/nitrate procedure. The ...