An interesting article came my way through an email from one of research news groups I am subscribed to. Thought it might spark some discussion. The actual research publication does not appear to be coming out until later this year (though it is available online now) but here is the synopsis of the research:
http://www.separationsnow.com/coi/cda/detail.cda?id=20922&type=Feature&chId=6&page=1
http://www.separationsnow.com/coi/cda/detail.cda?id=20922&type=Feature&chId=6&page=1
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