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A reporter's PressPass is required to access this story until the embargo expires on 4-Aug-2015 9:00 AM EDT

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Head Impacts and Collegiate Football Practice and Games

Researchers at the University of Virginia (UVa) examined the number and severity of subconcussive head impacts sustained by college football players over an entire season during practices and games. The researchers found that the number of head impacts varied depending on the intensity of the activity.

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Fish That Have Their Own Fish Finders

African fish called mormyrids communicate by means of electric signals. Fish in one group can glean detailed information from a signal’s waveform, but fish in another group are insensitive to waveform variations. Research at Washington University in St. Louis has uncovered the neurological basis for this difference in perception.

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Gut Microbes Affect Circadian Rhythms in Mice, Study Says

A study including researchers from the U.S. Department of Energy’s Argonne National Laboratory and the University of Chicago found evidence that gut microbes affect circadian rhythms and metabolism in mice.

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Chronic Insomnia Sufferers May Find Relief with Half of Standard Sleeping Pill Dosing Regimen

The roughly nine million Americans who rely on prescription sleeping pills to treat chronic insomnia may be able to get relief from as little as half of the drugs, and may even be helped by taking placebos in the treatment plan, according to new research published today in the journal Sleep Medicine by researchers from the Perelman School of Medicine at the University of Pennsylvania. Their findings starkly contrast with the standard prescribing practices for chronic insomnia treatment.

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MedStar Washington Neonatal ICU Achieves Three Years without a Single Central Line Infection

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A huge safety milestone for MedStar Washington Hospital Center's Neonatal Intensive Care Unit -- three years without a single central line infection in its smallest babies! The NICU hit the three-year mark on July 31, the longest stretch without a Central Line-Associated Bloodstream Infection (CLABSI) in any intensive care unit at the Hospital Center. What’s the unit’s secret? A teamwork has a lot to do with it.

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2015 ACR/ARHP Annual Meeting Press Registration Now Open

Registration is now open to journalists planning to attend the 2015 ACR/ARHP Annual Meeting.

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Dr. Joseph Hill Named Editor-in-Chief of Circulation

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Dr. Joseph Hill, Chief of UT Southwestern Medical Center’s Division of Cardiology and Director of the Harry S. Moss Heart Center, has been selected as the upcoming editor-in-chief for the American Heart Association’s principal scientific journal, Circulation.

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Not-For-Profit Hospitals May Not Trump For-Profits in Providing Uncompensated Care

While not-for-profit hospitals receive substantial tax benefits, some do not provide free or subsidized care for a higher percentage of patients living in poverty than their for-profit counterparts, according to a study of California medical centers.

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Scientists Propose an Explanation for Puzzling Electron Heat Loss in Fusion Plasmas

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Scientist Elena Belova of the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL) and a team of collaborators have proposed an explanation for why the hot plasma within fusion facilities called tokamaks sometimes fails to reach the required temperature, even as researchers pump beams of fast-moving neutral atoms into the plasma in an effort to make it hotter.