Critical behavior in nonequilibrium phase transitions

The nonequilibrium phase transitions occurring in a fast-ionic-conductor model and in a reaction-diffusion Ising model are studied by Monte Carlo finite-size scaling to reveal nonclassical critical behavior; our results are compared with those in related models.

Self-consistent theory of current and voltage noise in multimode ballistic conductors

Electron transport in a self-consistent potential along a ballistic two-terminal conductor has been investigated. We have derived general formulas which describe the nonlinear current-voltage characteristics, differential conductance, and low-frequency current and voltage noise assuming an arbitrary distribution function and correlation properties of injected electrons. The analytical results have been obtained for a wide range of biases: from equilibrium to high values beyond the linear-response regime. The particular case of a three-dimensional Fermi-Dirac injection has been analyzed. We show that the Coulomb correlations are manifested in the negative excess voltage noise, i.e., the voltage fluctuations under high-field transport conditions can be less than in equilibrium.

Quantum suppression of shot noise in field emitters

We have analyzed the shot noise of electron emission under strong applied electric fields within the Landauer-Bttiker scheme. In contrast to the previous studies of vacuum-tube emitters, we show that in new generation electron emitters, scaled down to the nanometer dimensions, shot noise much smaller than the Schottky noise is observable. Carbon nanotube field emitters are among possible candidates to observe the effect of shot-noise suppression caused by quantum partitioning.

Shot-noise spectroscopy of energy resolved ballistic currents

We investigate the shot noise of nonequilibrium carriers injected into a ballistic conductor and interacting via long-range Coulomb forces. Coulomb interactions are shown to act as an energy analyzer of the profile of injected electrons by means of the fluctuations of the potential barrier at the emitter contact. We show that the details in the energy profile can be extracted from shot-noise measurements in the Coulomb interaction regime, but cannot be obtained from time-averaged quantities or shot-noise measurements in the absence of interactions.

Heat transfer between nanoparticles: Thermal conductance for near-field interactions

We analyze the heat transfer between two nanoparticles separated by a distance lying in the near-field domain in which energy interchange is due to the Coulomb interactions. The thermal conductance is computed by assuming that the particles have charge distributions characterized by fluctuating multipole moments in equilibrium with heat baths at two different temperatures. This quantity follows from the fluctuation-dissipation theorem for the fluctuations of the multipolar moments. We compare the behavior of the conductance as a function of the distance between the particles with the result obtained by means of molecular dynamics simulations. The formalism proposed enables us to provide a comprehensive explanation of the marked growth of the conductance when decreasing the distance between the nanoparticles.

First-principles study of the neutral molecular metal Ni(tmdt)2.

The electronic structure of the molecular solid Ni(tmdt)2, the only well characterized neutral molecular metal to date, has been studied by means of first-principles density functional calculations. It is shown that these calculations correctly describe the metallic vs semiconducting behavior of molecular conductors of this type. The origin of the band overlap leading to the metallic character and the associated Fermi surfaces has been studied.

Age and growth of Gerres filamentosus (Cuvier, 1829) from Kodungallur, Azhikode Estuary, Kerala

The age and growth, length – weight relationship and relative condition factor of Gerres filamentosus (Cuvier, 1829) from Kodungallur, Azhikode Estuary were studied by examination of 396 specimens collected between May 2008 to October 2008. Here, length frequency method was used to study age and growth in fishes. L∞, K and t 0 obtained from seasonal and non - seasonal growth curves. Gerres filamentosus showed a low mortality rate (Z) 3.702 y-1. G. filamentosus has moderately low K value and long life span. The relation between the total length and weight of G. filamentosus was described as Log W = 1.321+2.5868 log L for males, Log W = 1.467 + 2.7227 log L for females and Log W = 1.481 + 2.7316 log L for sexes combined. The mean relative condition factor (Kn) values ranged from 0.9 to 1.14 for males, 0.89 to 1.11 for females and 0.73 to 1.08 for sexes combined. The length weight relationship and relative condition factor showed that the wellbeing of G. filamentosus were good. The morphometric measurements of various body parts were recorded. The morphometric measurements were found to be nonlinear and there is no significant difference observed between the two sexes.

Tres pol??ticos en el arte de lo posible : Jos?? Mo??ino, Conde Floridablanca; Mariano Ruiz Funes; Diego Saavedra Fajardo

Actas del ciclo de conferencias patrocinado por una Fundaci??n cultural regional y dedicado a tres personajes hist??ricos de Murcia que desarrollaron su actividad laboral y p??blica en la pol??tica: el Conde de Floridablanca, Mariano Ruiz Funes y Diego Saavedra y Fajardo.

El niño que llegó a Primer Ministro : José Moñino Redondo, Conde de Floridablanca.

Cuento destinado a estudiantes de educación primaria, con el fin de dar a conocer la figura de José Moñino, conde de Floridablanca. Se otorga una gran importancia al contexto de la época de dicho personaje y a la vida cotidiana de las ciudades del siglo XVIII donde se desenvuelve su vida. Se incluye una serie de propuestas de actividades para desarrollar en el aula o en la biblioteca escolar..

José María Navascues : figuras para un recortable.

Sobre los fondos que el museo Jovellanos de Gijón posee sobre el artista José María Navascues (1934-1979) y las exposiciones temporales realizadas se elaboró este cuaderno de trabajo que hace un repaso a la vida y obra de Navascues, analizando las etapas creativas del mismo, algunas de las piezas expuestas, las técnicas utilizadas y el mundo simbólico de sus obras. A partir de una colección de piezas de madera se proponen una serie de actividades para experimentar las propiedades de algunas obras de arte y de transmitir emociones, basadas en un ejercicio de asociación y de observación. Tambien propone la realización de un taller donde se realicen trabajos alrededor de la obra de Navascues: reconstrucción de esculturas, vinculación de esculturas y dibujos, de una escultura y un texto, elaboración de un cuaderno de fetiches, etc..

Experiencias did??cticas sobre el yacimiento de Cerro Macareno y el entorno arqueol??gico de San Jos?? de la Rinconada - Sevilla

XV Concurso para el fomento de la investigaci??n educativa en sus modalidades: Premio Joaqu??n Guichot sobre la cultura andaluza y Antonio Dom??nguez Ortiz sobre el desarrollo curricular. Primer premio del apartado A: investigaciones y experiencias docentes sobre aspectos relacionados con la Comunidad Aut??noma de Andaluc??a y su cultura, as?? como sobre la integraci??n de la cultura andaluza y la educaci??n en valores en el curr??culum de las diferentes ??reas y niveles de ense??anza

Reconocimiento y estímulo : medallas de la Educación Aragonesa y Cruces de José de Calasanz 2011.

Relación de premiados con la Medalla de la Educación Aragonesa, la Cruz de José de Calasanz, las placas de reconocimiento y las medallas extraordinarias de educación del año 2011. Su objetivo es destacar a personas o instituciones que han destacado por su servicio a la educación aragonesa.