The kinetics of hydrogen evolution reaction (HER) was studied in 1M NaOH at various temperatures (298 to 358 K) on Ni-P-C (composite electrodes. The electrochemical efficiency of the electrodes has been evaluated on the basis of electrochemical data obtained from the steady-state polarization Tafel curves, electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) in 1M NaOH solut...

In past years, it was known that paint on reflector surfaces causes degradation of antenna gain and noise temperatures, but it was not known how much degradation occurs as a function of paint and primer thickness or frequency. This article presents an approach used to study the properties of paint by first measuring the complex dielectric constants of paint and primers at frequencies of interes...

The paper reports main results of a comprehensive study of the vibrational spectrum of ketene computed using second-order perturbation theory treatment based on quartic, cubic and semidiagonal quartic force constants. Two different models--a homogeneous model using the same density functionals and basis functions for the harmonic calculations and anharmonic corrections, and a hybrid model in wh...

We provide a detailed study of the reflectivity of multiferroic TbMnO3 for wave numbers from 40 cm −1 to 1000 cm −1 and temperatures 5 K < T < 300 K. Excitations are studied for polarization directions E a, the polarization where electromagnons are observed, and for E c, the direction of the spontaneous polarization in this material. The temperature dependencies of eigenfrequencies, damping con...

Let f(z) be a function analytic in the complex domain C+∪C−∪(−1,+∞), real for real z and such that f(z), f2(z) are anti-Herglotz functions. In this paper we show that f(z) possesses simple upper and lower bounds given by rational functions. Our main tool is the analytic theory of continued fractions. An application to the theory of solutions of the Feigenbaum-Cvitanović equation is given.

We present a simple protocol for two-player secure circuit evaluation. The protocol enables players C and D to cooperate in the computation of f(x) while D conceals her data x from C and C conceals his circuit for f from D. The protocol is based on the technique of hiding information from an oracle [Abadi, Feigenbaum, Kilian, J. Comput. System Sci. 39(1):21{50, August, 1989].

In this paper, we develop a new approach to the construction of solutions of the Feigenbaum-Cvitanović equation whose existence was shown by H. Epstein. Our main tool is the analytic theory of continued fractions.

Classical electrodynamics uses a dielectric constant to describe the polarization response of electromechanical systems changes in an electric field. We generalize that description include wide variety responses field, as found most and applications. Electromechanical can be many physical biological applications, such ion transport membranes, batteries, elastomers. present unified, thermodynami...