There is a growing interest in Zn1 xBexO (ZBO)/ZnO heterostructures and quantum wells since the band gap energy of ZBO solid solutions can be tuned over a very large range (3.37–10.6 eV) as a function of the Be composition. Due to its extremely large exciton binding energy (263 meV for Zn0.8Be0.2O/ZnO), ZBO/ZnO has been utilized in ultraviolet light emission diodes and lasers, and may find appl...

This study addresses relationships between leaf phenology, xylogenesis, and functional xylem anatomy in two ring-porous oak species, the temperate Quercus robur and the sub-Mediterranean Q. pyrenaica. Earlywood vessel (EV) formation and leaf phenology were monitored in 2012 and 2013. Ten individuals per species were sampled at each of three sites located in NW Iberian Peninsula. EV areas measur...

Methods Prospective study. We evaluated the clinical training courses (October 2014 January 2015) based on high-fidelity simulation of care in patients with suspected MERS-CoV or EV, carried out in a Clinical Simulation Unit of a tertiary hospital. Both courses were organized in five stations: 1. Course presentation with audiovisual media; 2. Supervised dress-up with the specific personal prote...

ZnO microrods were grown by laser assisted flow deposition technique in order to study their luminescence behaviour in the near band edge spectral region. Transmission electron microscopy analysis put in evidence the high crystallinity degree and microrod's compositional homogeneity. Photoluminescence revealed a dominant 3.31 eV emission. The correlation between this emission and the presence o...

With the increase in number of electric vehicles (EVs) and developments their related charging infrastructures, consumers have still some concerns about limiting factors EV industry such as battery life, station availability, grid capacity, limited driving range, slow batteries. Although solutions are proposed for these limitations, they not sufficiently efficient cost-effective. Moreover, EVs ...

That observers tend to agree in their ratings of a target even if they have never interacted with that target has been called consensus at zero acquaintance. The basic finding that consensus is highest for judgments concerning a target's degree of extraversion (EV) and somewhat weaker for judgments of conscientiousness is replicated. Several potential observable cues that might be used by judge...

Scanning tunneling microscopy images confirm electron diffraction studies that the zinc-blende GaN(001)-4x reconstruction consists of rows aligned along [110] with a spacing along [110] of 4a. Dual-bias imaging shows a 180 degree shift of the corrugation maximum position between the profiles of empty and occupied states, in agreement with surface simulations based on the 4 x 1 linear tetramer m...

We examine the real space structure and the electronic structure (particularly Ce4f electron localization) of oxygen vacancies in CeO(2) (ceria) as a function of U in density functional theory studies with the rotationally invariant forms of the LDA+U and GGA+U functionals. The four nearest neighbor Ce ions always relax outwards, with those not carrying localized Ce4f charge moving furthest. Se...