Ion mobility spectrometry (IMS) is a well known technique; offering small size and a sensitivity in the ppb range makes
it a typical technique for the detection of explosives or chemical warfare agents. Ordinary IMS devices use in general a
continuously working radioactive ionization source. We use a pulsed non-radioactive electron source for ionization
which offers the innovative possibility of introducing delay times in between ionization and ion detection. The
application and benefits of such a pulsed ionization source in the detection of the chemical warfare agent simulant
dimethyl methylphosphonate (DMMP) and the toxic toluene diisocyanate (TDI) will be demonstrated.
Cell tracking has been shown to be an important technique in order to obtain cell motility parameters to consider in
various biological and pharmaceutical applications. In order to get statistically reliable data, a lot of tracking procedures
have to be repeatedly performed, which is a tedious task if performed manually. Thus there is a strong interest in the
automation of the tracking. Automatic cell tracking requires the re-identification of a certain cell image in subsequent
video images. This task is very difficult due to the changes the cell undergoes why moving, i.e. stretching, rotation, but
in phase contrast microscopy also intensity changes. Here we evaluate histogram-based cell image identification
techniques, specifically histogram distance measures, regarding their applicability in phase contrast microscopy with
focus on the possibility to successfully deal with the previously mentioned difficulties and propose a procedure that takes
these into consideration and can thus be applied for image based cell re-identification.
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