science + technology news

Nanowires detect cancer

September 26, 2005

Molecular markers indicating the presence of cancer in the body are readily detected in blood scanned by special arrays of silicon nanowires — even when these cancer markers constitute only one hundred-billionth of the protein present in a drop of blood, Harvard University researchers have found.

“This is one of the first applications of nanotechnology to healthcare and offers a clinical technique that is significantly better than what exists… read more

Nanobot programmable dermal display animation developed

September 23, 2005

Robert A. Freitas and Gina “Nanogirl” Miller have developed an animation of the “programmable dermal display” described in Freitas’ Nanomedicine, Volume I: Basic Capabilities book.

A population of about 3 billion display pixel robots would be permanently implanted a fraction of a mm under the surface of the skin of the back of the hand, presenting to the user data received from the large population… read more

University of Denmark Scientists Develop Hydrogen Tablet

September 23, 2005

Scientists at the Technical University of Denmark have invented a technology which may be an important step towards the hydrogen economy: a hydrogen tablet that effectively stores hydrogen in an inexpensive and safe material in solid form: in ammonia absorbed efficiently in sea salt.

Quantum-dot syntheses developed

September 23, 2005

New synthesis methods by University at Buffalo researchers allow for scalable, rapid creation of large quantities of non-toxic, robust, water-dispersible quantum dots for bioimaging.

The quantum dots also emit light in longer wavelengths, in the red region of the spectrum, making them capable of imaging processes deeper in the body, and they exhibit two-photon excitation, which is necessary for high-contrast imaging.

Source: University at Buffalo newsread more

Brain imaging ready to detect terrorists, say neuroscientists

September 23, 2005

Brain-imaging techniques that reveal when a person is lying are now reliable enough to identify criminals, with 99% accuracy, claim University of Pennsylvania School of Medicine researchers.

When someone lies, their brain inhibits them from telling the truth, and this makes the frontal lobes more active, which can be monitored with functional magnetic resonance imaging (fMRI).

Scientists create artificial proteins from evolutionary ‘rules’

September 23, 2005

Scientists have created artificial proteins based on a set of simple “rules” that nature appears to use to design proteins. The artificial proteins look and function just like their natural counterparts.

The UT Southwestern Medical Center researchers tested the “rules” gleaned from the evolutionary record by feeding them into a computer program they developed. The program generated sequences of amino acids, which the researchers then “back-translated” to create artificial… read more

Researchers predict infinite genomes

September 22, 2005

Researchers might never fully describe some bacteria and viruses–because their genomes are infinite, according to scientists at The Institute for Genomic Research (TIGR), writing in the September 19-23 early online edition of the Proceedings of the National Academy of Sciences (PNAS).

With collaborators at Chiron Corporation, Harvard Medical School and Seattle Children’s Hospital, they compared the genomic sequence of eight isolates of the same bacterial species, Streptococcus agalactiae, and… read more

A Sci-Fi Future Awaits the Court

September 22, 2005

At John Roberts’ confirmation hearings last week, there weren’t enough discussions about science fiction. Technologies that are science fiction today will become constitutional questions before Roberts retires from the bench. The same goes for technologies that cannot even be conceived of now. And many of these questions involve privacy.

Intel claims power breakthrough

September 22, 2005

Intel has announced a new chip manufacturing process which it claims could dramatically cut power consumption, and boost battery life by up to 1,000 per cent.

Magnetic Nanocrystals Provide Dual Imaging of Cancer Cells

September 21, 2005

Antibody-labeled magnetic nanocrystals used with MRI can rapidly detect breast cancer cells in a living animal, South Korean researchers have found.

The water-soluble antibody-nanocrystal conjugate binds tightly to the HER2/neu receptor that is overexpressed on certain types of breast cancer and is targeted by the anticancer therapy Herceptin. When injected into mice bearing human breast tumors, it travels quickly to the site of the tumors and renders them visible… read more

Tiny microscope peers into mice brains

September 21, 2005

A microscope the size of a matchbox can image blood vessels lying 1 millimeter below the surface of the brains of mice, with a resolution of 1 micrometer.

A pin-like probe, 1 mm in diameter, protrudes from the bottom of the device and punches a tiny hole in the head of the anesthetized mouse. The probe does not enter the brain, but sits on top of the hippocampus. There… read more

It’s A Whole New Web

September 20, 2005

“Web 2.0″ is shaking up a raft of industries as people individually and collectively program their own Web.

By the millions, they’re gathering and disseminating their own news with blogs and podcasts, creating customized article and photo feeds from their favorite sites and even annotating them with helpful text tags that others can search for. And they’re producing their own entertainment on video, social-networking, game, and photo-sharing sites.

Nature’s Design Workshop

September 19, 2005

A new field called biomimicry, or biologically inspired design, allows engineers to mimic nature’s successful designs and production methods.

A Company Looks to Wean Computers Off the Wires

September 19, 2005

Airgo Networks’ high-speed wireless networking system, True MIMO, operates at as much as 240 megabits a second, surpassing Wi-Fi and Ethenet rates.

It will allow for high-resolution digital video distribution in the home.

Stem Cells Help More Mice Walk

September 19, 2005

Injections of human stem cells in mice seem to directly repair some of the damage caused by spinal cord injury, going beyond previous research by repairing myelin cells, which create the biological insulation that nerve fibers need to communicate.

A number of neurological diseases, such as multiple sclerosis, involve loss of that insulation.

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