The harmonic balance method is used to construct approximate frequency–amplitude relations and periodic solutions to the relativistic oscillator. By combining linearization of the governing equation with the harmonic balance method, we construct analytical approximations to the oscillation frequencies and periodic…

This paper deals with the non-linear oscillation of a simple pendulum and presents an approach for solving the non-linear differential equation that governs its movement by using the harmonic balance method. With this technique it is possible to easily obtain…

Convergence properties are presented for Newton additive and multiplicative Schwarz (AS and MS) iterative methods for the solution of nonlinear systems in several variables. These methods consist of approximate solutions of the linear Newton step using either AS or MS…

Antimony-doped tin dioxide electrodes supported on titanium have been used in the electrochemical treatment of aqueous solution
containing phenol. Ti/SnO2–Sb anode has high efficiency in the elimination of phenol, but its use is hindered by its short service
life. The…

The aim of this paper is to explore the reasons that lead to information systems outsourcing in the largest Spanish firms. Our paper takes as its starting point the previous literature on information systems and tries to analyse if those…

There is limited data regarding the effects of melatonin on the
activity of neuronal acetylcholine receptors (nAChRs) themselves. This study
analyzes the effects of low concentrations of melatonin on nicotine-evoked
currents from cerebellar granule neurons (CGNs) in culture. Using
electrophysiological…

The poly(o-aminophenol) (POAP) redox process has been studied in aqueous acid solution using spectroscopic and optic in situ
techniques. The redox transition of the POAP from its completely oxidized state to its completely reduced state occurs through two
consecutive reactions…

In this paper we present the study of the electrochemical properties of the following conducting polymers: poly(o-anisidine),
polyaniline and copolymers of aniline and o-anisidine obtained by a new synthetic method. The polymers are synthesized
in free-of-acid conditions, using an activated…

New legislation in the Valencian Community (Decree 36/2002, 5th of March) has allowed the expansion of the existent marinas in this region of the SE of Spain, affecting in a significant way the Alicante province that possesses over thirty nautical…

Mi intención es explicar cómo el texto crea significado con estructuras de sintaxis marcadas; pretendo observar el potencial de la lengua por medio del análisis desde una perspectiva funcional de dos estructuras anómalas en la lengua inglesa como son la…