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Brain Maps for Stroke Treatment

April 1, 2010

New research that uses brain imaging to examine connections between different parts of the brain shows that communication between the left and right hemispheres is often disrupted from a stroke; the greater the disruption, the more profound the patient’s impairment in movement or vision.

This is a first step in a multiyear project assessing how to predict how well people will recover from stroke and better target stroke treatments… read more

‘Gravity tractor’ could deflect asteroids

August 1, 2008

A study by NASA’s Jet Propulsion Laboratory shows that the weak gravitational pull of a nearby spacecraft could deflect a hypothetical asteroid 140 meters across, big enough to cause regional devastation if it hit Earth.

Printing Muscle and Bone

December 19, 2006

Researchers at Carnegie Mellon University and the University of Pittsburgh have successfully directed adult stem cells from mice to develop into bone and muscle cells with the aid of a custom-designed ink-jet printer. They say it’s a first step toward better understanding tissue regeneration, which may one day lead to therapies for repairing damaged tissues, as occurs in osteoarthritis.

Take a tour of the virtual future at Stanford

January 16, 2012

stanfordvirtual

If you want to see what your living room is likely to look like four years from now, come and take a tour of Stanford’s new Virtual Human Interaction Lab, says Jeremy Bailenson, an associate professor of communication and co-author of the book Infinite Reality.

“It’s a high-tech vision of the future,” Bailenson said.

“We’re using this cutting-edge lab to try to think ahead by a… read more

Incorporate disassembly into every self-assembled nanotech product

February 6, 2004

We can avoid the risks of molecular nanotechnology by building “self-regulating assembly” and “disassembly” into nanotechnology from the start, says Douglas Mulhall, author of “Our Molecular Future.”

Self-regulating assembly means built-in controls that limit replication rates of molecular assemblers. Ddisassembly (such as building in biodegradability) ensures that assemblers won’t be fundamentally defective from environmental and military security viewpoints.

Mapping the fruit fly brain

April 13, 2010

Mapping Fruit Fly Brain

A new computer-based technique is exploring uncharted territory in the fruit fly brain with cell-by-cell detail that can be built into networks for a detailed look at how the estimated 100,000 neurons work together.

How recycling could keep your organs young

August 11, 2008

Researchers at Albert Einstein College of Medicine of Yeshiva University have prevented the livers of mice from aging by engineering mice in which the cellular cleaning machinery is stopped from breaking down, thus blocking buildup of damaged proteins.

They developed mice with an extra copy of the gene that codes for a receptor protein that lets chaperone molecules dock with enzyme-filled compartments called lysosomes, where the unwanted protein molecules… read more

The Year in Nanotech

December 29, 2006

Carbon-nanotube displays and computers, nanowires that generate electricity from body movements, and nanospheres that engulf cancer cells are among the year’s developments.

New optical recording technique can see millisecond nerve impulses

February 17, 2004
Second-harmonic generation microscopy image of a sea slug (Aplysia) neuron

High-resolution images of millisecond-by-millisecond signaling through nerve cells is now possible by combining the bright laser light of multiphoton microscopy with specially developed dyes and a phenomenon called second-harmonic generation, say biophysicists at Cornell University and Université de Rennes, France.

This technique allows for looking at membrane potential in nerve-cell signaling with high resolution deep in intact tissue. And by “stacking” multiple images at various depths of focus, the… read more

Life Recorder

April 21, 2010

Security expert Bruce Schneier suggests that a wearable “life recorder” (records everything that happens to a person in audio + video) could also be used for personal security by adding GPS and the capability to call for help and accurately report details of an attack.

Making a Solar Cell Component without Using Fossil Fuels

August 15, 2008

BioSolar is creating new plastic backing for photovoltaic cells out of renewable cotton and castor beans rather than petroleum products, while costing 25 percent less than conventional backsheets, the company says.

Record-Breaking Speed for Flexible Silicon

January 10, 2007

Researchers at the University of Wisconsin, Madison, have made ultrathin silicon transistors that operate more than 50 times faster than previous flexible-silicon devices and are expected to reach 20 Gigahertz.

The Problem with Dead White Males

February 27, 2004

A recent poll suggests an alarming gap in university presidents’ knowledge: the entire past 200 years. Asked to name the books “you believe every undergraduate university student should read and study in order to engage in the intellectual discourse, commerce, and public duties of the 21st century,” the academic leaders came up with a list highly deficient in science and that pretty much excluded anything written after 1800.

The… read more

Neural mechanisms of abstract learning

April 29, 2010

Brown University researchers have found neural mechanisms that underlie our remarkable ability to discover abstract cognitive relationships when dealing with new problems.

In a functional magnetic resonance imaging (fMRI) study, they found that the frontal cortex of the brain appears to be organized in a front to back hierarchy: more anterior regions support rule learning at higher levels of abstraction, and when humans confront new rule learning problems, this… read more

NewsCred Goes Public With Credibility-Based News Source

August 20, 2008

NewsCred, the news aggregator that ranks stories by the credibility of their source, has launched to the public.

Instead of relying on popularity, as many social news sites do, NewsCred instead allows users to rate each story, author, and publication’s credibility, which is then plugged into an algorithm to determine the site’s prominent headlines.

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