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Thereby difficulties associated with the identification of compounds from their corresponding derivatives, due to the absence of corresponding spectra in commercially available databases, and further complicated by the fact that some compounds may derivatize in more than one position, were avoided
The teeth can remain noticeably white for about a year without exposing the enamel to erosion
If the change is not remarkable, and patients do not want to quit caffeine, they should be advised to limit their caffeine intake to 200 milligrams or less per day
The 2009 LiDAR survey revealed over 11,000 individual terraces , a scale of landscape modification unmatched at any other Maya site (Chase et al., Journal of Archaeological Science , vol
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