Archive: 14/07/2009

Best energy harvesting sources for future AF UAVs

Dye-sensitized solar cells (DSSCs) are expected to power Air Force unmanned aerial vehicles (UAVs) in the future because they are an optimum energy harvesting source that may lead to longer flight times without refueling.

dateJul 14, 2009 in Engineering
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Safely on the move

How can rescue units be better protected during disaster operations or avalanche victims be found quicker? A new localization system connects satellite-based positioning systems with terrestrial locating aids and situation-dependent ...

dateJul 14, 2009 in Engineering
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Turbulence responsible for black holes' balancing act

We live in a hierarchical Universe where small structures join into larger ones. Earth is a planet in our Solar System, the Solar System resides in the Milky Way Galaxy, and galaxies combine into groups and clusters. Clusters ...

dateJul 14, 2009 in Astronomy
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More 'McBang' for your 'McBuck'

McDonald's seems recession-proof, its profitability apparently untouched by the newest economic crisis to hit America. Though the average family may not be able to eat out in style, they can afford a Dollar Menu double cheeseburger ...

dateJul 14, 2009 in Economics & Business
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