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Essentials of Regional Anesthesia Alan David Kaye Nalini Vadivelu Richard D. Urman Editors Essentials of Regional Anesthesia Editors Alan David Kaye, MD, PhD Director of Interventional Pain Management University Hospital and Ochsner Kenner Hospital Professor and Chairman Department of Anesthesiology Professor Department of Pharmacology Louisiana State University School of Medicine New Orleans

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Lake Chad, Chad, Africa. NASA Image and Video Library. 1990 04 29. Africa's Lake Chad where the borders of Chad, Niger, Nigeria and Cameroon merge (13.0N, 14.0E) has been undergoing change for the past 25 to 30 years when it was first noticed that the lake is drying up. Since then, astronauts have been photographing it on a regular basis to record the diminishing lake bed.


The delta C 13 was measured in the high Mgcalcite skeleton of three C. nereostratum specimens from two islands 500 km apart in the Aleutian archipelago. In the records spanning 1887 to 2003, the average decadal rate of decline in delta C 13 values increased from 0.03% yr( 1) in the 1960s to 0.095% yr( 1) in the 1990s, which was higher than


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