science + technology news

Meditation Gives Brain a Charge, Study Finds

January 3, 2005

Brain research is beginning to produce concrete evidence that mental discipline and meditative practice can change the inner workings and circuitry of the brain and allow people to achieve different levels of awareness.

Using functional magnetic resonance imagining (fMRI), Richard Davidson of the University of Wisconsin, in collaboration with Tibet’s Dalai Lama,has pinpointed the left prefrontal cortex, an area just behind the left forehead, as the place where brain… read more

Nanoparticles Replace Toxic Virus Vectors for Gene Therapy

December 31, 2004

A gene therapy method that doesn’t rely on potentially toxic viruses as vectors is being developed by University at Buffalo scientists.

The researchers delivered fluorescent genes to cells using nanoparticles as DNA carriers as an alternative vector to viruses. Using confocal microscopy and fluorescent spectroscopy, the scientists tracked transfection optically in real time, including the delivery of genes into cells, the uptake of genes by the nucleus and their… read more

Ultrafast Supercomputer to Simulate Nuke Explosion

December 31, 2004

Leading nuclear scientists will witness next summer the results of the greatest effort ever in supercomputing: a 3-D simulation of the explosion of an aging nuclear bomb, produced by the world’s fastest computer, BlueGene/L, running at 360 teraflops.

The Invisible Fighter

December 30, 2004

Researchers may be developing an invisibility cloak for soldiers and vehicles using digital cameras that can capture nearby surroundings and then project that scene on uniforms and vehicles.

The system would create a mobile movie screen that is indistinguishable from the surrounding cityscape.

Man and the Machines

December 30, 2004

It’s time to start thinking about how we might grant legal rights to computers. At some point in the not-too-distant future, we might actually face a sentient, intelligent machine who demands, or who many come to believe deserves, some form of legal protection. The plausibility of this occurrence is an extremely touchy subject in the artificial intelligence field….

You, Robot

December 30, 2004

Roboticist Hans Moravec has founded Seegrid Corporation to develop vision-enabled robotic carts that can be loaded and then walked through various routes to teach them how to navigate on their own and move supplies around warehouses without human direction.

Coated nanotubes make biosensors

December 30, 2004

Researchers from the University of Illinois at Urbana-Champaign are using carbon nanotubes to sense single molecules, and are tapping the way carbon nanotubes give off near-infrared light in order to read what the sensors have detected.

The sensors could eventually be used to monitor biochemical changes in biological fluids and tissue in real time.

Transparent transistors may lead to new industries

December 29, 2004

Researchers at Oregon State University and Hewlett Packard have reported a first example of a new class of thin-film materials, called amorphous heavy-metal cation multicomponent oxides, that could be used to make transparent transistors that are inexpensive, stable, and environmentally benign.

This could lead to new industries and a broad range of new consumer products, scientists say.

The new material combines the characteristics of different elements to give… read more

China Launches Next-Generation Internet

December 29, 2004

China is rolling out the first network based on Internet Protocol Version 6 (IPv6) technology, a major component of the next-generation Internet.

Officials claim top transmission speeds of 2.5 to 10 gigabits per second, with a trial connecting schools in Beijing and Tianjin reaching 40 gigabits per second. Coverage is expected to expand to 100 universities in the near future.

A key advantage of IPv6 is that it… read more

Human brain result of ‘extraordinarily fast’ evolution

December 29, 2004

New research by Bruce Lahn, an assistant professor of human genetics at the University of Chicago, suggests that humans evolved their cognitive abilities not owing to a few sporadic and accidental genetic mutations but rather from an enormous number of mutations in a short period of time, acquired though an intense selection process favoring complex cognitive abilities.

Lahn suggests that the development of human society may be the reason.… read more

Antibiotic Resistant Bacterium Uses Sonar-Like Strategy to ‘See’ Enemies Or Prey

December 28, 2004

Scientists have found that bacteria can use a Sonar-like system to spot other cells (either normal body cells or other bacteria) and target them for destruction.

Reported in the December 24 issue of Science, this finding explains how some bacteria know when to produce a toxin that makes infection more severe. It may lead to the design of new toxin inhibitors.

Schepens Eye Research Institute newsread more

Intense physical activity may help people maintain cognitive skills as they age

December 28, 2004

Longer and more intense physical activity may help people maintain their cognitive skills as they age, according to a 10-year study of elderly men published in the December 28, 2004 issue of Neurology.

The study showed that over 10 years the cognitive decline in men who had reduced their daily physical activity by an hour or more was 2.6 times greater than the decline in men who maintained their… read more

What We Can Learn from Robots

December 28, 2004

Mitsuo Kawato, director of the ATR Computational Neuroscience Laboratories in Kyoto, Japan, believes that experiments on humanoid robots can provide simplified models of what certain groups of neurons in the brain are doing.

Then, using advanced imaging techniques, he looks at whether brain cells in monkeys and humans accord with the models.

By combining magnetic-resonance imaging, which offers millimeter-level resolution, with electrical and magnetic recording techniques, which resolve… read more

First ‘atlas’ of key brain genes could speed research on cancer, neurological diseases

December 28, 2004

Researchers at Dana-Farber Cancer Institute have compiled the first atlas showing the locations of crucial gene regulators, or switches that determine how different parts of the brain develop — and, in some cases, develop abnormally or malfunction.

The scientists say the map will accelerate research on brain tumors and neurological diseases that result from mutations in these switch genes, called “transcription factors.”

Just How Old Can He Go?

December 27, 2004

Emerging trends in medicine, biotechnology and nanotechnology open a realistic path to immortality, says Ray Kurzweil in his new book, “Fantastic Voyage: Live Long Enough to Live Forever,” co-authored by Terry Grossman, M.D.

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