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Science News Archive 2005 - Page 87


Page 87 of 165

Speed limits may not be saving lives

A study published in Review of Policy Research questions the role of speed limits in improving highway safety. Research by Dr. Robert O. Yowell suggests that technical progress, seat belt use, and increased road maintenance contribute more to declining fatality rates.

SourceBlackwell Publishing Ltd.·JournalReview of Policy Research·DateJun 22, 2005

'Hollow-face illusion' affects estimates of distance and reaching tasks

A joint study by the University of Minnesota and German institutions found that participants' perceived shape of a face influences their verbal estimates and reach movements. The 'hollow-face illusion' showed similar effects on both verbal and reaching tasks, highlighting the importance of object recognition in motor actions.

Oral rinse predictor of marrow transplant effectiveness

A new study has developed an oral rinse test that can detect the presence of white blood cells in patients undergoing bone marrow transplants. The test was found to be effective in predicting which patients are at risk of infection during their recovery, with a difference of less than four days being an indicator of susceptibility.

SourceUniversity of Toronto·JournalBone Marrow Transplantation·DateJun 22, 2005

Researchers improve lung cancer survival rates

A new study finds that post-surgical chemotherapy significantly improves five-year survival rates for patients with non-small cell lung cancer, reducing cancer recurrence by 49% compared to surgery alone. The treatment is inexpensive and has limited side effects, paving the way for a new standard of care.

SourceUniversity of Alberta·JournalNew England Journal of Medicine·DateJun 22, 2005

Passion for technology: Three UH women honored

Math Professor Suncica Canic received a Top Houston Women in Technology award for her career achievements and research on improving stent design. UH students Irene Cooperstein Cole and Barbara Nishae Brooks were awarded $10,000 Kathi Bowles Scholarships for their exemplary performance in math and computer science.

Therapy may not be necessary for autoimmune hepatitis with no symptoms

Researchers found that asymptomatic autoimmune hepatitis patients had lower liver enzyme and IgG antibody levels, but did not differ from symptomatic patients in terms of inflammation. Despite treatment recommendations, most asymptomatic patients do well without immunosuppressive therapy as long as they remain asymptomatic.

SourceWiley·JournalHepatology·DateJun 22, 2005

Arthritis: What Wnt wrong?

A study published in the American Journal of Pathology reveals that Wnt-7b is significantly upregulated in arthritic knee tissues, particularly in areas of high inflammation. The findings suggest a potential role for Wnt-7b in rheumatoid arthritis progression and may lead to new therapeutic strategies.

SourceAmerican Journal of Pathology·JournalAmerican Journal Of Pathology·DateJun 22, 2005

New material could improve fabrication of nanoscale components

Researchers at Penn State have developed a new type of ultrathin film made from spherical cages of carbon atoms, which can enable more precise patterning of electronic and sensing devices. The material's unique properties allow for easier replacement of molecules, expanding the range of molecular components that can be incorporated.

SourcePenn State·JournalJournal of the American Chemical Society·DateJun 22, 2005

Hummingbird flight an evolutionary marvel

Researchers used digital particle imaging velocimetry to document the movement of air around a hummingbird's wings, revealing that it develops only 25% of its weight support during the upstroke. This unique wing structure enables hummingbirds to tap into 'leading edge vortices' and gain hovering ability.

SourceOregon State University·JournalNature·DateJun 22, 2005

Pitt and Bell Labs researchers send 'heavy photons' over world-record distances

Researchers from Pitt and Bell Labs have successfully created a two-dimensional semiconductor structure that allows excitons to exist longer and travel farther than previously recorded. This breakthrough could lead to the development of excitonic circuits for optical communication, enabling photons to be converted directly into excitons.

SourceUniversity of Pittsburgh·JournalPhysical Review Letters·DateJun 21, 2005

From butterflies to freshwater supplies

The Stanford Institute for the Environment has awarded a total of $640,000 in grants to support innovative interdisciplinary research. Five proposals have been selected for funding, including projects focused on reintroducing butterflies to campus lands and assessing agricultural-urban water markets in India.

Study: Harmless virus kills some cancers

Researchers have found that adeno-associated virus type 2 (AAV2) can selectively kill cancer cells while leaving healthy cells intact. The study suggests that AAV2 recognizes abnormal cancer cells and induces apoptosis, making it a promising candidate for an anti-cancer therapy.