Two-dimensional liquid chromatography (2D-LC) improves chromatographic performance, with LCxLC providing extensive information for complex mixtures but requiring precise parameter adjustments. A free ...

If you've ever found yourself copying the same formula down hundreds of rows in Excel, you know how tedious it gets. The usual approach, dragging formulas, adjusting cell references, and hoping ...

A study suggests that the first of seven key pyramids in Egypt, the Step Pyramid of Djoser, was built using a hydraulic lift. Dated to about 4,500 years ago, this would move up the introduction of ...