In a national study of children in motor vehicle crashes, researchers at The Childrens Hospital of Philadelphia report that traumatic stress can occur without injury. Looking at a wide range of crashes reported to State Farm Insurance Companies®, researchers found that while most children did well, two percent of the children and five percent of their parents experienced multiple traumatic stress symptoms that disrupted their lives.
There are more than 1.5 million crashes involving children in the U.S. annually, suggesting that more than 25,000 children each year may require help in coping with reactions to a crash. Researchers urge clinicians to screen children and their parents after any crash experience.
"Until now, research on traumatic stress after crashes had only examined patient populations in hospitals or clinics," said Dr. Flaura Winston, M.D., Ph.D., a pediatrician at The Childrens Hospital of Philadelphia and lead author on the study. "In this study, we found that, although its less common, traumatic stress can occur in children and their parents even if a child wasnt injured in the crash." Dr Winston is also co-Director and a principal investigator on the Partners for Child Passenger Safety study.
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Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
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Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
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