13/10/2011

Small defects mean big problems for industrial solar cells

Nanoscale clustering of metal impurities at intragranular dislocations within industrial mc-Si solar cells have been observed by users from the Massachusetts Institute of Technology working with the Center for Nanoscale Materials ...

Aggressive piranhas bark to say buzz off

Thanks to Hollywood, piranhas have a bad reputation and it would be a brave scientist that chose to plunge their hand into a tank of them. But that didn't deter Sandie Millot, Pierre Vandewalle and Eric Parmentier from the ...

US Air Force calls drone fleet virus a 'nuisance'

A computer virus that hit the US drone fleet last month created a "nuisance" but no serious threat to flight operations for the unmanned aircraft, the US Air Force said Wednesday.

Experimental mathematics: Computing power leads to insights

In his 1989 book "The Emperor's New Mind", Roger Penrose commented on the limitations on human knowledge with a striking example: He conjectured that we would most likely never know whether a string of 10 consecutive 7s appears ...

Radiation hotspot detected in Tokyo: reports

A radiation hotspot has been detected in Tokyo, reports said Thursday as researchers carry out stringent tests to map how far contamination has spread from the crippled Fukushima nuclear plant.

BP, Transocean, Halliburton cited for violations

The US government slapped BP, Transocean and Halliburton with citations for violating oil industry regulations in what is expected to lead to massive fines for the deadly 2010 oil spill.

World needs joint nuclear safety approach

The global upsurge in the use of nuclear power in countries such as China, Russia and Britain must be accompanied by a greater focus on security and the management of nuclear waste, a report said Thursday.

page 10 from 11