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Gizmorama - British scientist helps design swimsuit
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Good Morning,
Happy Leap Day! I didn't know so many people get into
Leap Day. National Geographic has a whole day
of programming dedicated to celebrating the day with frogs.
Here is a link to their page...
http://www.nationalgeographic.com/museum/exhibitions/leapday.html
Have a great weekend.
See you Monday,
Erin
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British scientist helps design swimsuit
British researchers have created a computer modeling technique
that has helped produce what's billed as the fastest swimsuit
in the world. The research was led by Herve Morvan of the
University of Nottingham's School of Mechanical, Materials
and Manufacturing Engineering. Morvan, acting as an advisor
to Speedo International Ltd., assisted in the design of the
company's LZR Racer swimsuit. Within a week of its launch
athletes wearing the new swimsuit had broken three world
records. Speedo researchers scanned more than 400 athletes and
then studied the scan for a series of top athletes. Morvan and
his team pinpointed areas of high friction on the athletes'
bodies. With that information, designers were able to develop
and position low friction fabric in the needed locations.
The new suit has 5 percent less drag than Speedo's 2007 suit,
the FS Pro, which saw swimmers break 21 world records, officials
said. The project also included researchers from NASA, the U.S.
space agency, and the University of Otago in New Zealand.
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MIT scientists study rat whisker movements
Rats use whiskers as humans use fingers and now U.S. scientists
have shown the whisker movements underlying rats' tactile
perceptions. Massachusetts Institute of Technology researchers
said just as humans move their fingertips across a surface to
perceive shapes and textures, rats twitch their whiskers to
achieve the same goal. In the study, MIT neuroscientists
captured on high-speed video how rats rely on their whiskers,
devoting large areas of their brains to decoding the incoming
signals. Assistant Professor Christopher Moore, a member of
MIT's McGovern Institute for Brain Research and senior author
of the study, said the findings could help further understanding
of perception across species. "Now that we can see what the rat's
whiskers are telling the brain, we can start to understand better
how this amazing perceptual system works," said Moore. "This
understanding is relevant not only to the human sense of touch,
but to all forms of perception, because every sensory organ is
an interface between the mind and the external world." The
research that included postdoctoral scientists Jason Ritt and
Mark Andermann appears in the journal neuron.
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Scientists make detailed brainstem images
U.S. scientists have developed a technique that can, for the
first time, produce three-dimensional, high-resolution images
of the human brainstem. The brainstem, a small structure
located at the base of the brain, controls such biological
functions as breathing and experiences of reward or pleasure.
It is also a site for the production of neurotransmitters, the
overabundance or absence of which in other parts of the brain
are associated with disorders such as schizophrenia and
Parkinson's disease. "For a long time, scientists have tried
looking at this area of the brain and have been unsuccessful --
it's just too small," said Kimberlee D'Ardenne, a postdoctoral
student at Princeton University and lead author of the study.
She and her colleagues obtained the images by applying
specialized techniques to functional magnetic resonance
imaging. The three-dimensional images allow scientists to
observe the brain processes that accompany human movement and
mental activities with unprecedented precision. The Princeton
researchers said they plan to use the new technique to
understand how the brain's physical structures give rise to
the functions of the mind -- a field known as cognitive
neuroscience. The study appears in the journal Science.
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