Search results for "ICON"

Comparación de psicopatología en pacientes dependientes de alcohol, de cocaína y policonsumidores

2010

El presente estudio trata de evaluar la psicopatología y el perfil característico en policonsumidores de cocaína y alcohol (n=14), dependientes de alcohol (n=10) y dependientes de cocaína (n=11) que inician tratamiento ambulatorio. Se administraron un conjunto de pruebas: SCL-90-R, BDI, MCMI-III y la Escala de Impulsividad de Barrat. Los resultados muestran que los policonsumidores realizan una demanda de tratamiento más temprana y llevan menos años de consumo previo. Todos los grupos muestran una impulsividad elevada y sintomatología leve en depresión. En el SCL-90-R los tres grupos presentan un perfil similar excepto en la escala Ideación Paranoide donde los consumidores de una única sust…

Consumo de cocaína en usuarios de metadona

2000

En el presente trabajo se presenta la experiencia, en forma de taller con usuarios en PMM y policonsumidores activos, que tuvo lugar con usuarios del metabus y profesionales de AUPA'M con la finalidad de aproximarnos a la realidad de este colectivo a partir- de un modelo de trabajo centrado en los usuarios. Se revisan los antecedentes históricos del consumo así cómo conocimientos teóricos -neurobiología y terapéuticos- sobre el tema .Las aportaciones de los participantes se han agrupado en cuatro apartados: mezcla y forma de consumo, efectos que se buscan, efectos "chungos" y opciones alternativas. Terminamos con una reflexión conjunta sobre la posición, modelo o estilo de trabajo de los pr…

Effects of rapid thermal annealing on the optical properties of low-loss 1.3μm GaInNAs∕GaAs saturable Bragg reflectors

2004

We report studies of the effect of rapid thermal annealing (RTA) on the optical properties of a low-loss 1.3 mum saturable Bragg reflector (SBR), consisting of a GaInNAs/GaAs single quantum well embedded in an AlAs/GaAs Bragg reflector grown monolithically on a GaAs substrate. RTA gives rise to a blueshift of the photoluminescence (PL) peak (and therefore of the excitonic absorption peak) and an enhancement of PL intensity, while the reflectivity properties including peak reflectivity and bandwidth are not degraded. Temperature dependent photoluminescence measurements show that the RTA-induced blueshift of photoluminescence consists of two components: one originating from the increase of op…

Prefazione a C. Hoevel, L'economia del riconoscimento. Persona, mercato e società in Antonio Rosmini

2016

Response of AGATA segmented HPGe detectors to gamma rays up to 15.1MeV

2013

WOS: 000314826000009

InBO3 and ScBO3 at high pressures: an ab initio study of elastic and thermodynamic properties

2016

We have theoretically investigated the elastic properties of calcite-type orthoborates ABO(3) (A= Sc and In) at high pressure by means of ab initio total-energy calculations. From the elastic stiffness coefficients, we have obtained the elastic moduli (B, G and E), Poisson's ratio (nu), B/G ratio, universal elastic anisotropy index (A(U)), Vickers hardness, and sound wave velocities for both orthoborates. Our simulations show that both borates are more resistive to volume compression than to shear deformation (B > G). Both compounds are ductile and become more ductile, with an increasing elastic anisotropy, as pressure increases. We have also calculated some thermodynamic properties, like D…

Tur e Iraj, Caín y Abel: Semejanzas iconográficas en la interminable lucha del mal y el bien.

2015

ABSTRACT: The duality between good and evil is a common topic in all civilizations regardless of chronology or geographical location. It is a conflict reflected in art history, and on the present occasion, through the iconographic types of Cain killing Abel as well as Tur murdering Iraj. The roots of these myths are deeply embedded in two highly relevant written sources, the Bible and the Shahnameh or The Book of Kings . The latter was written by the great Iranian poet Ferdowsi.  The legends, despite having different origins, nevertheless have many similarities and they share a particular iconographic type. I analyze each of the myths along with their pictorial representations, which connec…

Light-induced transmission nonlinearities in gallium selenide

1999

The intensity of a He–Ne laser (633 nm, 5 mW) transmitted by different GaSe samples is observed to change in correlation with a Nd-yttrium–aluminum–garnet laser pulse (532 nm, 7.8 ns, 3 mJ) which excites them. Such time response has been attributed to a nonlinear optical effect, i.e., a decrease in the refractive index due to the exciton screening by the photogenerated carriers. A calculation of the absorption coefficient and refractive index at different carrier concentrations has led to a reconstruction of transmittance transients which fully agree with the experimental data at different incident intensities and temperatures. Chantal.Ferrer@uv.es ; Jaqueline.Bouvier@uv.es ; Miguel.Andres@…

Study of water adsorption and capillary bridge formation for SiO(2) nanoparticle layers by means of a combined in situ FT-IR reflection spectroscopy …

2014

Water adsorption and capillary bridge formation within a layer of SiO2-nanoparticles were studied in situ by means of a combination of quartz crystal microbalance (QCM-D) with dissipation analysis and Fourier transformation infrared reflection absorption spectroscopy (FT-IRRAS). FT-IR data were employed to distinguish the “ice-like” and “liquid-like” contributions and to support the analysis of the QCM-D data concerning mass change and dissipation. Combined measurements show that for SiO2-nanoparticles with a diameter of about 250 nm, the formation of two adsorbed monolayers of water as well as bulk water leads to a rather linear increase in the dissipation for relative humidity values of u…

Ab Initio Studies of Triplet-State Properties for Organic Semiconductor Molecules

2012

Triplet–triplet annihilation (TTA) leads to a reduced efficiency of organic light-emitting diodes (OLEDs) at high current densities. Spacial confinement of the triplet excitons, which is mainly dependent on triplet energy differences, can reduce the TTA rate. Therefore, a deliberate choice of the organic semiconductor materials with particular attention to their triplet energies can help to considerably increase the device efficiency. Organic solid-state lasers are, on the other hand, efficiently quenched by singlet–triplet annihilation (STA), which is closely related to the triplet–triplet absorption of the organic semiconductors. To establish a useful set of parameters related to the proc…