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The development and the differentiation of the ventricular system of the brain of tadpoles of the South African Clawed Toad, Xenopus laevis (Daudin), is studied by light microscopy (stages 45 to 66) and scanning and transmission electron microscopy (stages 50 to 66). Special interest is paid to the ependymal structures of the foramen of Monroe, the(More)
Measuring the perceived quality of speaker systems in the car together with potential users is important to evaluate new speaker developments. Existing sound perception questionnaires suffer from being difficult to answer for human beings because audio perceptions are, for the average user, hard to express in words. In this paper, we present a questionnaire(More)
This case study describes the development of a method package for evaluating in-car HMIs holistically. The goal is to provide a toolbox that is easy to replicate and allows evaluators to identify the effects of the system usage on the drivers' state. Additionally it aims at finding interface flaws that cause distraction and negative experiences. We applied(More)
The distraction potential of communication systems in the automotive context necessitates hands-free and attention undemanding systems. Today's hands-free car kits are of increasingly high quality, since bad audio quality can negatively impact the overall communication quality. Most solutions use built-in speakers for output and a microphone near the driver(More)
Topical antiseptic therapy of generalized bacterial peritonitis using a single application of PVP-I solution was studied. Scanning electron microscopically , good peritoneal tolerance was demonstrated. PBI elevation and T3 depression were the only transient effects on thyroid function. When PVP-I was used, highly significant bacterial count reductions were(More)
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