Its analgesic effects are only partially reversed by naloxone, hence indicating that its opioid action is unlikely the sole factor; tramadol's analgesic effects are also partially reversed by Î±2 adrenergic receptor antagonists like yohimbine and the 5-HT3 receptor antagonist, ondansetron.
Array formulas in versions before Excel 2007 cannot handle whole-column references. In Excel 2007, array formulas can handle whole-column references, but this forces calculation for all the cells in the column, including empty cells. This can be slow to calculate, especially for 1 million rows.
With the Excel 2007 Big Grid, performance really matters: Slow calculation makes it more difficult for users to concentrate, and it increases errors. Excel 2007 introduces a number of features to help you handle this capacity increase, such as the ability to use more than one processor at a time for calculations.