In this review, the clinical features of the syndromes and the underlying biological foundations, as revealed through EEG and imaging studies, are discussed. PFTα It is concluded that although the syndrome can be well recognized, it is not acknowledged in standard diagnostic manuals, hence the relative neglect in the epilepsy literature. (C) 2010 Published by Elsevier Inc.”
“We investigate theoretically the electron spin relaxation in single-electron nanowire-based semiconductor double quantum dots induced by confined phonons and find that
the electron spin relaxation rate can be efficiently manipulated by external electric field in such system. An anti-crossing, due to the coaction of the electric field, the magnetic field and the spin-orbit coupling, exists between the lowest two excited states. Both energies and spins of the electron states
can be efficiently tuned by the electric field around the anti-crossing point. Multiple sharp peaks exist in the electric-field dependence of the spin relaxation rate induced by the confined phonons, which can be ascribed to the large density of states of the confined phonons at the van Hove singularities. This feature suggests that the nanowire-based double quantum dots can be used as electric tunable on-and-off spin switches, which are more sensitive and flexible Z-IETD-FMK in vitro than the ones based on quantum-well based double quantum dots. The temperature dependence of the spin relaxation rate at the anti-crossing point is calculated and a smooth peak, indicating the importance of the contribution of the off-diagonal elements of the density matrix to the spin relaxation, is observed. (C) 2011 American Institute of
Physics. [doi:10.1063/1.3592340]“
“Poly(vinyl chloride) (PVC)-based nanocomposites containing calcium carbonate nanoparticles (CaCO3) were prepared. Different nanoparticle surface modifiers were selected and tested to promote matrix/filler interactions and, consequently, to obtain high-performance materials. In particular, the nanoparticles were modified with poly(acrylic acid) (PAA) and poly (butadiene-co-acrylonitrile-co-acrylic acid) (PBAA). Sotrastaurin purchase For comparison, PVC-based materials, with the addition of commercial neat and stearic acid modified CaCO3, were also prepared. The influence of CaCO3 and surface modifiers on the gelation, thermal properties, thermal stability, and mechanical properties of PVC was studied. The gelation time of the rigid PVC/CaCO3 composites decreased as a function of the percentage and surface treatment of CaCO3. Morphological analysis proved the effectiveness of PAA and PBAA as surface modifiers; they obtained for the corresponding materials a typical nanostructured morphology. A significant improvement in the PVC thermal stability was recorded with the addition of neat and stearic acid modified CaCO3. Finally, mechanical tests showed an increase in the flexural strength and toughness of PVC as a function of the nanoparticle surface modifier.