الاثنين، 11 مارس 2013

ScienceDaily: Top News

ScienceDaily: Top News

Length of DNA strands can predict life expectancy

Posted: 10 Mar 2013 01:42 PM PDT

Can the length of strands of DNA in patients with heart disease predict their life expectancy? Researchers who studied the DNA of more that 3,500 patients with heart disease, say yes it can.

Store donated blood for more than 3 weeks? Say NO (nitric oxide)

Posted: 10 Mar 2013 01:42 PM PDT

Transfusion of donated blood more than three weeks old results in impaired blood vessel function, a new study of hospital patients shows. Blood banks now consider six weeks to be the maximum permitted storage time of blood for use in transfusion, but recent studies have suggested transfusing blood stored for more than a few weeks has adverse effects in patients undergoing cardiac surgery or critical care.

Are tropical forests resilient to global warming?

Posted: 10 Mar 2013 01:38 PM PDT

Tropical forests are less likely to lose biomass – plants and plant material - in response to greenhouse gas emissions over the twenty-first century than may previously have been thought, suggests a new study.

Amplified greenhouse effect shaping North into South

Posted: 10 Mar 2013 01:37 PM PDT

As the cover of snow and ice in the northern latitudes has diminished in recent years, the temperature over the northern land mass has increased at different rates during the four seasons, causing a reduction in temperature and vegetation seasonality in this area. In other words, the temperature and vegetation at northern latitudes increasingly resembles those found several degrees of latitude farther south as recently as 30 years ago, new research shows.
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