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New integral representations of the polylogarithm function
(Proceedings of the Royal Society. A: Mathematical, Physical and Engineering Sciences, 2007)
Maximon has recently given an excellent summary of the properties of the Euler dilogarithm function and the frequently used generalizations of the dilogarithm, the most important among them being the polylogarithm function ...
Spectral indices of Galactic radio loops between 1420, 820 and 408 MHz
(Monthly Notices of the Royal Astronomical Society, 2007)
In this paper, the average brightness temperatures and surface brightnesses at 1420, 820 and 408 MHz of the six main Galactic radio-continuum loops are derived, as are their radio spectral indices. The temperatures and ...
Crystallinity changes and melting behavior of the uniaxially oriented iPP exposed to high doses of gamma radiation
(Polymer Degradation and Stability, 2005)
Samples of isotactic polypropylene (iPP) oriented via solid-state stretching at elevated temperature (draw ratios of 1, 3, 5, 7.5, 10, 12.5 and 15) were analyzed. Gel content measurements, wide-angle X-ray diffraction ...
Nitrogen fixation at passivated Fe nanoclusters supported by an oxide surface: Identification of viable reaction routes using density functional calculations
(Physical Review B: Condensed Matter and Materials Physics, 2009)
Using density-functional calculations, we investigate the possibility of ammonia synthesis at supported Fe nanoclusters along catalytic routes closely resembling those in biological nitrogen fixation. To achieve similar ...
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 ...
C-H center dot center dot center dot pi interactions in the metal-porphyrin complexes with chelate ring as the H acceptor
(Journal of Inorganic Biochemistry, 2004)
Specific C-H(...)pi interactions with the pi-system of porphyrinato chelate ring were found in crystal structures of transition metal complexes from the Cambridge Structural Database and statistical analysis of geometrical ...
Dynamics of bright discrete staggered solitons in photovoltaic photorefractive media
(European Physical Journal B. Condensed Matter and Complex Systems, 2005)
Theoretical results on spatial optical bright solitons excited in arrays of nonlinear defocusing waveguides, that result from the photovoltaic effect in a photorefractive material, are presented. The existence of four types ...
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 ...
Summation formulae for finite cotangent sums
(Applied Mathematics and Computation, 2009)
Recently, a half-dozen remarkably general families of the finite trigonometric sums were summed in closed-form by choosing a particularly convenient integration contour and making use of the calculus of residues. In this ...
Transition from amorphous to crystalline beta phase in co-sputtered FeSi2 films as a function of temperature
(Journal of Applied Physics, 2005)
A study of the stability of amorphous FeSi2 films and their transition to a crystalline phase as a function of deposition or annealing temperature is presented. Stoichiometric FeSi2 films, 300-400 nm thick, were deposited ...