Hans-Erich Dechant

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Wandering spiders like Cupiennius salei are densely covered by tactile hairs. In darkness Cupiennius uses its front legs as tactile feelers. We selected easily identifiable hairs on the tarsus and metatarsus which are stimulated during this behavior to study tactile hair properties. Both the mechanical and electrophysiological hair properties are largely(More)
Striving towards an in depth understanding of stimulus transformation in arthropod tactile hairs, we studied the mechanical events associated with tactile stimulation. A finite element model was developed taking a tarsal tactile hair of the spider Cupiennius salei as an example. Considering hair diameter, wall thickness, and curvature, the hair is(More)
We profiled pediatric practice in the United States through a second-order analysis of data gathered in 1977 from 429 practicing pediatricians. Age, sex, board certification status, practice arrangement, and practice location of pediatricians in the United States were evaluated, as well as their patterns of practice. The number of and reasons for visits(More)
Stimulus transformation in arthropod mechanoreceptive hairs is dominated by the mechanical properties of both the hair shaft and the hair's articulation. Here a mathematical model of the hair's articulation is developed based on simple relationships relevant for every anisotropic articulation. The mechanical behavior regarding deflection under load of a(More)
This study was based on findings from a national survey of physicians that was conducted from 1975 to 1977. The data concern face-to-face encounters with children in the ambulatory care setting. Over one half of the practices of pediatricians consisted of infants and preschoolers, whereas well over 50 percent of the child patients of other types of(More)
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