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Science News Archive September 2001 - Page 3


Page 3 of 6

'Quantum dots' could form basis of new computers

Researchers at Purdue University have successfully linked two tiny structures called quantum dots to create a semiconductor-based quantum computer. The device uses quantum bits that exist in both on and off states simultaneously, enabling faster processing of information than conventional computers.

SourcePurdue University·JournalScience·DateSep 20, 2001

New approach to management of ulcerative colitis

A randomised controlled trial found that patient-centred self-management training reduced relapse times and hospital visits, while maintaining health-related quality-of-life scores. This alternative approach to traditional outpatient care may improve health-service provision and reduce costs for chronic diseases.

SourceThe Lancet_DELETED·JournalThe Lancet·DateSep 20, 2001

Health in a 24-hour society

A review article in The Lancet highlights the negative effects of shift work on health and productivity. Desynchronisation of circadian rhythms can lead to poor sleep, gastrointestinal disorders, and cardiovascular disease, emphasizing the need for employers to create effective working environments.

SourceThe Lancet_DELETED·JournalThe Lancet·DateSep 20, 2001

Sea of Galilee yields clues for weather forecasting

Scientists analyzed the physical response of the Sea of Galilee to external forcing and found intense mixing occurred closest to shores, which could improve ocean forecasts. This understanding is crucial for predicting currents, temperatures, and other oceanic issues like fish development.

SourceTexas A&M University·JournalJournal of Atmospheric and Oceanic Technology·DateSep 19, 2001

Plankton power

Researchers at ONR and DARPA are developing OSCAR, an oceanic fuel cell that harnesses organic matter in sea sediments to generate electricity. The early versions of OSCAR have been generating about 50 milliwatts per square meter, sufficient power for small calculators.

New McGill researchers win recognition

New McGill researchers have been awarded $1.76 million in funding for new equipment and installations, with Quebec agreeing to match the amount. The funding will support various campus projects and research initiatives across multiple institutions affiliated with McGill.

Detecting Alzheimer's

The NeuroGraph device, developed with Office of Naval Research funding, reads brain activity through a cap outfitted with electrodes to analyze differences from the norm. Pharmaceutical trials may also utilize NeuroGraph to test new drugs' efficacy on brain activity.

Seeing the light

The Office of Naval Research has funded the development of a Tactical Vectoring Equipment (TVE) display, a simple array of six lights with Fresnel lenses that projects red or green light based on viewing angle. This system aims to improve navigation and communication for surface ships behind carriers in low visibility conditions.

New fossils suggest whales and hippos are close kin

New fossils found in Pakistan have revealed a close kinship between whales and hippos, with the discovery of artiodactyl ankles suggesting that hippos may be a side line of artiodactyls. The findings, published in Science, use immunological, molecular, and genetic techniques to explore relationships among groups of animals.

SourceUniversity of Michigan·JournalScience·DateSep 19, 2001

How bacteria harden their "armor"

Scientists at Duke University have discovered a new enzyme that attaches aminoarabinose to the outer coat of gram-negative bacteria, reducing the ability of positively charged antibiotics to attach and kill them. This discovery offers a potential approach to overcoming antibiotic resistance.

SourceDuke University·JournalJournal of Biological Chemistry·DateSep 18, 2001

Supercomputer simulations reveal strongest carbon nanotubes

A team of researchers discovered a new type of carbon nanotube that is approximately 40 percent stronger than other nanotubes made using the same number of atoms. This breakthrough was achieved through supercomputer simulations at the San Diego Supercomputer Center and the University of Michigan.

SourcePenn State·JournalPhysical Review Letters·DateSep 17, 2001

Purple potato boost for organic food industry

Researchers at Newcastle University have discovered a purple potato variety that shows promise in resisting the devastating potato blight disease. The variety, grown commercially without using chemicals, could significantly impact the supply of organically-grown potatoes, improving availability and reducing costs for farmers.

Change in value of dollar dictates overseas production strategy, says O.R. study; exchange rate often overlooked

A new study by O.R. researchers found that the value of the dollar significantly impacts a company's decision on whether to export or invest in foreign production facilities. In depreciated currencies, strong exports favor the choice of ownership structure, while appreciated currencies favor investments in overseas production.