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Nuclear magnetic resonance offers the possibility of noninvasive in situ observation of (15)N pulse labeling in the presence of light. In vivo, exclusively the delta-nitrogen of Gln is labeled in the… (More)
Photoautotrophic cell supension cultures of C. rubrum exhibit a C3-type of photosynthesis. Yet, up to 20% of total CO2-fixation is directly incorporated into malate and aspartate during short-term… (More)
We have used diffusion–weighted 1H NMR micro–imaging and localized spectroscopy techniques to monitor the growth and distribution of mammalian cells in a hollow–fiber bioreactor. Non–invasive NMR… (More)
Abstract Muonic K- and L-Auger transitions in Ag have been measured with cooled Si p-n junction detectors of high resolution. The experimental Auger intensity ratios are compared with calculated… (More)
Abstract For studying the nitrogen metabolism in plants 15N NMR spectroscopy can be used. For in vivo 15N NMR (natural abundance of 15N: 0.37%) enrichment of the sample with the isotope 15N is… (More)
Nuclear magnetic resonance offers the possibility of noninvasive in situ observation of 15N pulse labeling in the presence of light. In vivo, exclusively the 5-nitrogen of Gin is labeled in the… (More)