When chemists cannot quantify the concentration in a field sample, they report nondetect instead of a numerical measurement. A data analyst faced with environmental data containing nondetects might ...

This article shows how the absorbance maxima of Ponceau-S is determined over a wavelength range of 220nm to 800nm using the Eppendorf BioSpectromenter ®. The methods of analysis using this ...

Researchers have produced a new archaeological tool which could answer key questions in human evolution. The new calibration curve, which extends back 50,000 years, is a major landmark in radiocarbon ...