The lab of Beat Fierz at EPFL, in collaboration with the group of Claus Seidel at the University of Düsseldorf, was now able to observe actual chromatin motions, using a unique combination of protein and DNA chemistry, along with two complementary single - molecule fluorescence spectroscopy approaches. (sciencedaily.com)
From March to October 2006, samples were analyzed in duplicate for lead, mercury, and arsenic concentrations using x-ray fluorescence spectroscopy as previously described.6 The minimum lead, mercury, and arsenic concentrations that could be detected in the medicines with x-ray fluorescence were 5 μg / g, 20 μg / g, and 10 μg / g, respectively. (jamanetwork.com)
Single - molecule fluorescence spectroscopy of a multichromophoric conjugated polymer (molecular weight ∼ 20,000) revealed surprising single - step photobleaching kinetics and acute jumps in fluorescence intensity. (science.sciencemag.org)