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Science News Archive 2014 - Page 43


Page 43 of 376

High mortality associated with STEMI heart attacks that occur in hospitalized patients

A new study published in JAMA found that hospitalized patients with STEMI heart attacks are more likely to die than those who had the same type of heart attack outside the hospital. The study analyzed data from over 62,000 patients and found that these patients were older, female, and less likely to receive routine treatments for STEMI.

Spiral laser beam creates quantum whirlpool

Physicists at Australian National University have created a spiral laser beam that generates a stable vortex of polaritons, which are hybrid particles exhibiting both matter-like and light-like behavior. This achievement could enable the development of novel technology linking conventional electronics with photonics.

SourceAustralian National University·JournalPhysical Review Letters·DateNov 16, 2014

80 million bacteria sealed with a kiss

Researchers found that couples who kiss frequently share similar oral bacteria, with at least nine kisses per day leading to significantly shared salivary microbiota. The study also suggests an important role for other mechanisms that select oral microbiota, shaped by lifestyle and personal care habits.

SourceBMC (BioMed Central)·JournalMicrobiome·DateNov 16, 2014

Study finds weight loss of 10 percent or more in seniors significantly raises hip fracture risk

A new study has found that weight loss of 10 percent or more in seniors substantially increases the risk of hip fractures. The Singapore Chinese Health Study found that body weight changes were associated with a significant increase in hip fracture risk, whereas weight gain did not reduce risk significantly.

SourceInternational Osteoporosis Foundation·JournalOsteoporosis International·DateNov 15, 2014

Resuscitation science tip sheet

Research presented at the American Heart Association's Scientific Sessions 2014 found that implementing pre-arrival telephone CPR guidelines in Arizona increased bystander CPR rates by 41% and survival rates by 42%. The study also showed that women are more likely to survive sudden cardiac arrest compared to men.

Recommendation theory

The MIT researchers' model assumes that large groups of ratings can be clustered together and described probabilistically. They found that just five clusters were enough to account for most of the variation in a population, suggesting that collaborative filtering yields nearly optimal predictions.

Killing cancer by protecting normal cells

Researchers developed an anti-cancer drug that protects normal cells from radiation damage while sparing cancer cells. The compound, RTA 408, increases the effectiveness of radiation therapy in prostate cancer models and has potential applications for treating accidental radiation exposure.

SourceThomas Jefferson University·JournalMolecular Cancer Therapeutics·DateNov 14, 2014