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Science News Archive June 2005 - Page 4


Page 4 of 15

The shifty nature of grains

Duke University researchers used a novel system to trace stress flow in granular materials, finding jagged pathways in certain setups. The Chicago Materials Research Center also made significant discoveries, quantifying changes in stress propagation when grains shift from jammed to flowing states.

Thyroid-cancer test reveals recurrence early

Researchers developed a new test for thyroid cancer that can detect recurrence up to three years before symptoms appear. The test measures thyroglobulin levels after injecting patients with Thyrogen, allowing for earlier detection of the disease.

SourceOhio State University·JournalThe Journal of Clinical Endocrinology & Metabolism·DateJun 23, 2005

Invasive parasite destroying fish species

A newly discovered invasive parasite is destroying the small sunbleak minnow's ability to spawn, potentially threatening freshwater ecosystem diversity and stability. The parasite, found in Asian gudgeon fish, causes near 100% failure in successful spawning, wiping out local populations over several generations.

SourceOregon State University·JournalNature·DateJun 22, 2005

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