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Dime Sized Fan Can Cool Laptop |
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Tuesday, 18 March 2008 |
Engineers harnessing the same physical property that drives silent
household air purifiers have created a miniaturized device that is now
ready for testing as a silent, ultra-thin, low-power and low
maintenance cooling system for laptop computers and other electronic
devices.
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Artificial Butter Causes Real Problems |
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Tuesday, 18 March 2008 |
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A new study shows that exposure to a chemical called diacetyl,
a component of artificial butter flavoring, can be harmful to the
nose and airways of mice. Scientists at the National Institute
of Environmental Health Sciences (NIEHS), part of the National
Institutes of Health, conducted the study because diacetyl has
been implicated in causing obliterative bronchiolitis (OB) in humans.
OB is a debilitating but rare lung disease, which has been detected
recently in workers who inhale significant concentrations of the
flavoring in microwave popcorn packaging plants.
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Monday, 17 March 2008 |
Human diseases and social networks seem to have
little in common. However, at the crux of these two lies a network,
communities within the network, and farther even, substructures of the
communities. In a recent paper in Physical Review E
77:016104 (2008), Weixiong Zhang, Ph.D., Washington University
associate professor of computer science and engineering and of
genetics, along with his Ph.D. student, Jianhua Ruan, published an
algorithm (a recipe of computer instructions) to automatically identify
communities and their subtle structures in various networks.
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The Corrupt Underworld of Ants |
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Tuesday, 11 March 2008 |
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Far from being a model of social co-operation, the ant world is
riddled with cheating and corruption – and it goes all the way to the
top, according to scientists from the Universities of Leeds and
Copenhagen.
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