Johann Thiel

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INTRODUCTION Pharmacological and nonpharmacological treatment of brain syndrome is multifarious. Until now, plain external applications of physical stimuli, as used daily in geriatric care, were not explored regarding their influence on cognitive brain function. The aim of this randomized cross-over study was to examine the influence of dermatoreceptive(More)
A positive linear fractional transformation (PLFT) is a function of the form f (z) = az+b cz+d where a, b, c and d are nonnegative integers with determinant ad − bc = 0. Nathanson generalized the notion of the Calkin-Wilf tree to PLFTs and used it to partition the set of PLFTs into an infinite forest of rooted trees. The roots of these PLFT Calkin-Wilf(More)
In this article, we examine the existence of nice arrangements of stars on the Ameri-can flag. We show that despite the existence of such arrangements for any number of stars from 1 to 100, with the exception of 29, 69 and 87, they are rare as the number of stars increases. 1. INTRODUCTION. The Union Jack is the blue, upper left portion of the American flag(More)
OBJECTIVE Plain external applications of physical stimuli, which are used quite commonly in geriatric care in Germany, have not been studied for their influence on cognitive brain function. The aim of this randomized crossover study was to examine the influence of dermatoreceptive stimuli on cognitive brain function in healthy geriatric volunteers. (More)
Percutaneous application of Kirschner wires, fixator pins, or other implants near the metacarpophalangeal joint may lead to postoperative disability of movement with subsequent joint stiffness. To determine the best location for the application of implants into the metacarpal head and the basis of the proximal phalanx, 57 Kirschner wires were introduced(More)
Finger flexion initiated at the distal and proximal interphalangeal joint level forces the extensor tendon to move distally. Therefore, the interosseous hood fixed to the extensor apparatus moves distally, too. The proximal part of the hood which is located at the level of the metacarpal head during extension of the finger slides distally along the basis of(More)
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