Dominik Michel

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The structure and dynamics of surfactant molecules [CH3(CH2)7COOK] in heavy water solutions were investigated by 1H and 2H NMR. A double-exponential attenuation of the spin-echo amplitude in a Carr-Purcell-Meiboom-Gill experiment was found. We expect correspondence to both bounded and monomeric states. At high concentrations in the NMR self-diffusion(More)
The aspiration efficiency of vertical and wind-oriented Air-O-Cell samplers was investigated in a field study using the pollen of hazel, sweet chestnut and birch. Collected pollen numbers were compared to measurements of a Hirst-type Burkard spore trap. The discrepancy between pollen counts is substantial in the case of vertical orientation. The results(More)
Interfaces between SIC Nicalon fibers and a lithium aluminum silicate (LAS) glass-ceramic matrix were investigated by transmission electron microscopy and energy-dispersive X-ray spectroscopy (EDS). Minor additive elements in the matrix, like niobium, can modify the mechanical properties of the composite because of the formation of niobium carbide a t the(More)
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