J . J . M . H . Ketelaars

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In the present study we investigated the root-cause of an interference signal (100–200 nm) of sugar-containing solutions in dynamic light scattering (DLS) and nanoparticle tracking analysis (NTA) and its consequences for the analysis of particles in biopharmaceutical drug products. Different sugars as well as sucrose of various purity grades, suppliers and(More)
The potential of an experimental imaging spectroscopy system with high spatial (0.16–0.28 mm2) and spectral resolution (5–13 nm) was explored for early detection of nitrogen (N) stress. From June through October 2000, a greenhouse experiment was conducted with 15 Lolium perenne L. mini-swards and 5 N treatments. Images were recorded twice a week. With the(More)
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