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Science News Archive 2009 - Page 67


Page 67 of 277

Do dust particles curb climate change?

Researchers analyzed literature to find that aerosol particles interact with clouds in a complex way, affecting precipitation patterns. They suggest focusing on specific cloud systems and rethinking aerosol research to better understand the dust particles' role in climate change.

SourceMax-Planck-Gesellschaft·JournalNature·DateOct 6, 2009

Ethnic background may be associated with diabetes risk

A new study found that South Asians are more likely to develop insulin resistance and type 2 diabetes due to their body composition, specifically higher total body fat and lower muscle mass. Researchers measured insulin levels in four ethnic groups and discovered a strong association between body fat distribution and diabetes risk.

SourceThe Endocrine Society·JournalThe Journal of Clinical Endocrinology & Metabolism·DateOct 6, 2009

Bell's palsy: Study calls for rethink of cause and treatment

Antiviral medications prescribed for Bell's palsy are no more effective than placebo, while corticosteroids offer significant benefits. The review suggests further research should focus on discovering alternative causes and treatments for the condition.

SourceWiley·JournalCochrane Database of Systematic Reviews·DateOct 6, 2009

A woman in space

In the early 1960s, a Harvard-educated surgeon and US Air Force General proposed testing women in space due to their lighter weight, lower heart rate, and fewer reproductive system issues. A total of 19 women were enrolled, with 68% passing the tests, earning them the nickname 'Mercury 13'. The data from these women's physiological tes...

SourceAmerican Physiological Society·JournalAJP Advances in Physiology Education·DateOct 6, 2009

Large-scale cousin of elusive 'magnetic monopoles' found at NIST

A team at NIST has discovered a large-scale compound that behaves like magnetic monopoles, enabling the testing of theoretical predictions about these elusive particles. The researchers created this compound by cooling a specific material to nearly absolute zero, forming spin ice crystals with balanced spins.

SourceNational Institute of Standards and Technology (NIST)·JournalJournal of the Physical Society of Japan·DateOct 6, 2009

Biologics for rheumatoid arthritis work, but which is best?

Biologic disease-modifying anti-rheumatic drugs are effective in treating rheumatoid arthritis, but direct comparisons of their effectiveness are needed. The researchers found that all biologics were very effective, with varying degrees of improvement in symptoms and adverse effect profiles.

SourceWiley·JournalCochrane Database of Systematic Reviews·DateOct 6, 2009

New NIST method reveals all you need to know about 'waveforms'

The National Institute of Standards and Technology (NIST) has introduced a novel calibration technique for entire waveforms, enabling more accurate measurements in oscilloscopes. This new method improves the characterization of diverse waveforms, particularly in high-speed devices, and offers potential cost savings in industries such a...

SourceNational Institute of Standards and Technology (NIST)·JournalIEEE Transactions on Instrumentation and Measurement·DateOct 6, 2009

New biologic drug is effective against rheumatoid arthritis

Abatacept, a new biologic drug, is effective in treating rheumatoid arthritis by blocking immune cell actions, reducing pain and swelling. The review of seven trials found significant improvements in patients' symptoms and joint health, with no progression of joint damage at 12-month follow-up

SourceWiley·JournalCochrane Database of Systematic Reviews·DateOct 6, 2009

Antidepressant use during pregnancy associated with some adverse outcomes in newborns

Studies found that antidepressant medication exposure during pregnancy is associated with an increased risk of preterm birth and low five-minute Apgar scores. Exposure was also linked to a higher risk of admission to the neonatal intensive care unit (NICU). The study suggests that treatment of depression during pregnancy may be warrant...

SourceJAMA Network·JournalArchives of Pediatrics and Adolescent Medicine·DateOct 5, 2009

Physicists seek to keep next-gen colliders in 1 piece

Researchers aim to control electromagnetic forces that can destroy future particle accelerators. They propose two approaches: heavy damping and light damping with detuning, to mitigate the effects of extreme wake fields. Detuning is compared to acoustics, where ringing bells at different frequencies reduces overall sound amplitude.

SourceUniversity of Manchester·JournalPhysical Review Special Topics - Accelerators and Beams·DateOct 5, 2009

Acidic clouds nourish world's oceans

Scientists at the University of Leeds discovered that acidic clouds can convert large particles of iron from dust into small, soluble nanoparticles that plankton can use. This finding highlights a previously unknown source of bioavailable iron delivered to the Earth's surface in precipitation.

SourceUniversity of Leeds·JournalEnvironmental Science & Technology·DateOct 5, 2009