Alexander Wessels

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In this paper a novel localization approach in wireless sensor networks (WSNs) with spatial dynamic RSSI-filtering is presented. For the food transportation logistics WSNs could be applied to monitor the environmental parameters, e.g. temperature and humidity, within the container. The sensor nodes are arbitrarily distributed within the palettes. In a(More)
Currently there are a few fields of application using quartz crystal microbalances (QCM). Because of environmental conditions and insufficient resolution of the microbalance, chemical sensing of volatile organic compounds in an open system was as yet not possible. In this study we present strategies on how to use 195 MHz fundamental quartz resonators for a(More)
Recent studies indicate that the brain is a target for toxic carbonaceous nanoparticles present in ambient air. It has been proposed that the neurotoxic effects of such particles are driven by nicotinamide adenine dinucleotide phosphate (NADPH) oxidase mediated generation of reactive oxygen species (ROS) in activated microglia. In the present study, we have(More)
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