저널 Read more :: arXiv Spontaneous dark-matter mass generation along cosmological attractors in string theory We propose a new scenario for generating a relic density of non-relativistic dark matter in the context of heterotic string theory. Contrary to standard thermal freeze-out scenarios, dark-matter particles are abundantly produced while still relativistic, and then decouple from the thermal bath due to the sudden increase of their mass above the universe temperature. This mass variation is sourced by the condensation of an order-parameter modulus, which is triggered when the temperature T(t) drops below the supersymmetry breaking scale M(t), which are both time-dependent. A cosmological attractor mechanism forces this phase transition to take place, in an explicit class of heterotic string models with spontaneously broken supersymmetry, and at finite temperature.
강의 Read more :: TED The truth about electroconvulsive therapy (ECT) In 1982, a young nurse was suffering from severe, unrelenting depression. She couldn't work, socialize or concentrate. One controversial treatment changed everything: after two courses of electroconvulsive therapy (ECT) her symptoms lifted. So what exactly is electroconvulsive therapy and why is it so stigmatized? Helen M. Farrell details the history and evolution of ECT. [Directed by Artrake Studio, narrated by Bethany Cutmore-Scott].
연구과제 Read more :: GRANTS.GOV Suicide Prevention Lifeline Crisis Center Follow-Up Expansion Grant Program The purpose of this program is to provide an integrated hub that: (1) ensures systematic follow-up of suicidal persons who contact a NSPL Crisis Center; (2) provides enhanced coordination of crisis stabilization, crisis respite, and hospital emergency department services; and (3) enhances coordination with mobile on-site crisis response. In effect, with the resources provided, the hub should not lose track of a person in a suicidal crisis as they interface with crisis systems. It is expected that this program will promote continuity of care to safeguard the well-being of individuals who are at risk of suicide.