Games

Polymers, Vol. 3, Pages 674-692: Spectroscopic Investigation of Composite Polymeric and Monocrystalline Systems with Ionic Conductivity
Polymers, Vol. 3, Pages 662-673: Routes to Nanoparticle-Polymer Superlattices
F1: Drivers Still Concerned Over Cockpit Workload
Kids' sidewalk chalking banned because someone might trip into traffic
Game Kitchen commotion : 24/03/2011
Game Mask uk : 24/03/2011
Game Print and colour : 24/03/2011
Game Hide and seek garden : 24/03/2011
Game Slim mask : 24/03/2011
Game Maggie mask : 24/03/2011
Game Art play story maker : 24/03/2011
Game Uncle arts - pizza delivery challenge : 24/03/2011
Game My bunny : 24/03/2011
Game Stanley english : 24/03/2011
Game Pool invasion : 24/03/2011
Game Watchout : 24/03/2011
Game Bop letters : 24/03/2011
Game My masterpiece : 24/03/2011
Game Stanley charades : 24/03/2011
Game Pooh hefflump movie : 24/03/2011

Polymers, Vol. 3, Pages 674-692: Spectroscopic Investigation of Composite Polymeric and Monocrystalline Systems with Ionic Conductivity

Posted: 24 Mar 2011 12:00 AM PDT

The conductivity mechanism is studied in the LiCF3SO3-doped polyethylene oxide by monitoring the vibrations of sulfate groups and mobility of Li+ ion along the polymeric chain at different EO/Li molar ratios in the temperature range from 16 to 90 °С. At the high EO/Li ratio (i.e., 30), the intensity of bands increases and a triplet appears at 1,045 cm−1, indicating the presence of free anions, ionic pairs and aggregates. The existence of free ions in the polymeric electrolyte is also proven by the red shift of bands in Raman spectra and a band shift to the low frequency Infra-red region at 65 < T < 355 °С. Based on quantum mechanical modeling, (method MNDO/d), the energies (minimum and maximum) correspond to the most probable and stable positions of Li+ along the polymeric chain. At room temperature, Li+ ion overcomes the intermediate state (minimum energy) through non-operating transitions (maximum energy) due to permanent intrapolymeric rotations (rotation of C, H and O atoms around each other). In solid electrolyte (Li2SO4) the mobility of Li+ ions increases in the temperature range from 20 to 227 °С, yielding higher conductivity. The results of the present work can be practically applied to a wide range of compact electronic devices, which are based on polymeric or solid electrolytes.

Polymers, Vol. 3, Pages 662-673: Routes to Nanoparticle-Polymer Superlattices

Posted: 24 Mar 2011 12:00 AM PDT

Nanoparticles can self-assemble into highly ordered two- and three-dimensional superlattices. For many practical applications these assemblies need to be integrated into polymeric matrices to provide stability and function. By appropriate co-assembly of nanoparticles and polymers it has become possible to tailor the nanoparticle superlattice structure via the length and stiffness of the polymer chains. The present article outlines and discusses established routes to nanoparticle-polymer superlattices. Recent progress has been remarkable so that the integration into functional devices has become the next challenge.

F1: Drivers Still Concerned Over Cockpit Workload

Posted: 24 Mar 2011 12:00 AM PDT

Mark Webber doesn't understand why the new adjustable rear wing is available for use during qualifying...

Kids' sidewalk chalking banned because someone might trip into traffic

Posted: 24 Mar 2011 12:46 AM PDT

A cafe in Nunawading, Australia is being forced to stop toddlers from drawing with chalk on its sidewalk, despite the fact that the kids, the cafe, the townspeople and the mayor all like the drawings. The drawings contravene the town's anti-graffiti laws, and the mayor says he can't grant a permit because someone might trip over a child, fall into traffic and die horribly. As Lenore Skenazy says,

Can we PLEASE stop catastrophizing this way in every situation? If the kids are an accident waiting to happen while they draw on the sidewalk, aren't they an accident waiting to happen while they just stand on the sidewalk, too? After all, someone could bump into them! A car could jump the curb! A dog could chase them into the street! And inside the cafe, a patron could spill boiling tea on them. Every situation can be dangerous if you think about it hard enough. Why use THAT as an excuse to curtail childhood?