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Science News Archive 2009 - Page 145


Page 145 of 277

American elderly thrash English at 'brain training' test

A recent study found that American over-65s scored significantly better than their English counterparts in a memory and awareness test. Higher levels of education and lower levels of depressive symptoms in the US may have contributed to this difference, while aggressive cardiovascular disease treatment in England could be a factor.

SourceBMC (BioMed Central)·JournalBMC Geriatrics·DateJun 24, 2009

Dry autumns and winters may lead to fewer tornadoes in the spring, says UGA researcher

A new study by researchers at the University of Georgia suggests that drought conditions in an area's fall and winter may lead to a statistically significant reduction in tornado activity during the following spring. In contrast, wet autumns and winters were found to have nearly twice as many spring tornado days as drought years did.

SourceUniversity of Georgia·JournalEnvironmental Research Letters·DateJun 24, 2009

New approach to treating heart attacks reduces risk of life-threatening complications

A new study suggests that transferring heart attack patients to specialized hospitals for angioplasty within six hours after clot-busting drugs significantly improves outcomes, reducing repeat heart attacks and serious cardiac complications by 36%. Patients who received earlier angioplasty also had lower rates of chest pain and second ...

SourceSt. Michael's Hospital·JournalNew England Journal of Medicine·DateJun 24, 2009

Stream of sand behaves like water

University of Chicago researchers have discovered that dry granular materials can form water-like droplets when poured, revolutionizing the way we understand particle transport and manipulation. The study's findings could lead to more efficient oil refining, plastics manufacturing, and pharmaceutical production processes.

First acoustic metamaterial 'superlens' created by University of Illinois researchers

Researchers at the University of Illinois have successfully focused ultrasound waves through a flat metamaterial lens to create an acoustic 'superlens'. This innovation could improve high-resolution ultrasound imaging, non-destructive structural testing of buildings and bridges, and novel underwater stealth technology.

Children's Hospital Oakland scientists first to discover new source for harvesting stem cells

A groundbreaking study reveals a new avenue for harvesting stem cells from healthy newborn placentas, which contain more stem cells than umbilical cord blood and can be safely extracted for transplantation. The discovery holds promise for curing chronic blood-related disorders such as sickle cell disease and leukemia.

SourceChildren's Hospital & Research Center Oakland·JournalExperimental Biology and Medicine·DateJun 23, 2009

Afghani children suffering from post-traumatic stress

A study published in the Journal of Traumatic Stress found that at least half of Afghan school children have developed PTSD due to traumatic experiences. The research highlights the need for interventions addressing not only war experiences but also family disturbances and community factors.

SourceWiley·JournalJournal of Traumatic Stress·DateJun 23, 2009

Marking anorexia with a brain protein

A recent study published by Faculty of 1000 Medicine discovered that brain-derived neurotrophic factor (BDNF) levels are higher in women who have recovered from anorexia. This suggests that low BDNF levels may be reversible and could potentially serve as a biomarker for recovery from eating disorders.

SourceFaculty of 1000·JournalPsychological Medicine·DateJun 23, 2009

How adolescent girls manage stress

Teenage girls experience increased stress levels, with seven out of ten suffering from stress. To withstand this, girls rely on various sources of strength including emotional support, controlling their daily lives, and engaging in recreational activities.

SourceUniversity of Gothenburg·JournalPublic Health Reports·DateJun 23, 2009

Southwest Nano Consortium established

The Southwest Nano Consortium brings together six states and northern Mexico to pool resources, encourage collaboration, and host internationally recognized events. The consortium aims to expedite the commercialization of nanotechnology technologies with significant impact on renewable energy, biotech, IT, and other sectors.

New research discovers link between smoking and brain damage

Researchers found a direct link between smoking and brain damage due to NNK, a tobacco compound that provokes white blood cells to attack healthy brain cells. This can lead to neuroinflammation, conditions like Multiple Sclerosis. NNK is present in all forms of tobacco, also affecting second-hand smokers.

SourceWiley·JournalJournal of Neurochemistry·DateJun 23, 2009