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.
A second reason to use arrays is their speed. It takes much less time to retrieve data from arrays than from tables (made up of cells) on an Excel worksheet ... So here is an example that will make this all a little clearer ... On the first worksheet (DS) you will find: a 5000 row by 3 column data set :