Structural evolution in Au- and Pd-based metallic glass forming liquids and the case for improved molecular dynamics force fields.

The results of a combined experimental and computational investigation of the structural evolution of AuSi, PdSi, and PdCuSi metallic glass forming liquids are presented. Electrostatically levitated metallic liquids are prepared, and synchrotron x-ray scattering studies are combined with embedded atom method molecular dynamics simulations to probe the distribution of relevant structural units. Metal-metalloid based metallic glass forming systems are an extremely important class of materials with varied glass forming ability and mechanical processibility.

Swearing as a response to pain-effect of daily swearing frequency.

Unlabelled: Previously we showed that swearing produces a pain lessening (hypoalgesic) effect for many people.(20) This paper assesses whether habituation to swearing occurs such that people who swear more frequently in daily life show a lesser pain tolerance effect of swearing, compared with people who swear less frequently. Pain outcomes were assessed in participants asked to repeat a swear word versus a nonswear word.