Studienköpfe, zwanzig essayistische Porträts.

Edvard Munch. -- Christian Sinding. -- John Henry Mackay. -- Adelsteen Normann. -- Herman Grimm. -- Ralph Waldo Emerson. -- Hans Baluschek. -- Martin Brandenburg. -- Jonas Lie (Dyre Rein) -- Paul Heyse (Lyrik) -- Constantin Meunier. -- Arnold Böcklin. -- Wilhelm Raabe (Erzählungen) -- Theodor Fontaine. -- Fidus. -- Van de Velde und der yachting style. -- Bung-Bung (Stefan George) -- Ludwig von Hofmann. -- Ludwig Richter. -- Fritz Mauthner (Kritik der Sparche)

Der Atheismus und seine Geschichte im Abendlande /

1. Bd. Einleitung. Teufelsfurcht und Aufklärung im sogenannten Mittelalter. -- 2. Bd. Entdeckung der Natur und des Menschen. Lachende zweifler. Niederlande, England. -- 3. Bd. Aufklärung in Frankreich und in Deutschland. Die grosse Revolution (1. bis 11. Abschnitt) -- 4. Bd. Aufklärung. Grosse Revolution (12. bis 14. Abschnitt) Die letzten hundert Jahre. Reaktion. Materialismus. Gottlose mystik.

Der Letzte tod des Gautama Buddha /

Includes bibliographical references (p. [139]-140) and index.

Skepsis und Mystik, Versuche im Anschluss an Mauthners Sprachkritik.

Mode of access: Internet.

Die Geisterseher; humoristischer Roman

Mode of access: Internet.

Totengespraeche.

Mode of access: Internet.

Infrasound initiates directional fast-start escape responses in juvenile roach Rutilus rutilus

Acoustic stimuli within the sonic range are effective triggers of C-type escape behaviours in fish. We have previously shown that fish have an acute sensitivity to infrasound also, with acceleration thresholds in the range of 10(-5) m s(-2). In addition, infrasound at high intensities around 10(-2) m s(-2) elicits strong and sustained avoidance responses in several fish species. In the present study, the possible triggering of C-escapes by infrasonic single-cycle vibrations was examined in juvenile roach Rutilus rutilus. The fish were accelerated in a controlled and quantifiable manner using a swing system. The applied stimuli simulated essential components of the accelerations that a small fish would encounter in the hydrodynamic flow field produced by a predatory fish. Typical C- and S-type escape responses were induced by accelerations within the infrasonic range with a threshold of 0.023 m s(-2) for an initial acceleration at 6.7 Hz. Response trajectories were on average in the same direction as the initial acceleration. Unexpectedly, startle behaviours mainly occurred in the trailing half of the test chamber, in which the fish were subjected to linear acceleration in combination with compression, i.e. the expected stimuli produced by an approaching predator. Very few responses were observed in the leading half of the test chamber, where the fish were subjected to acceleration and rarefaction, i.e. the stimuli expected from a suction type of predator. We conclude that particle acceleration is essential for the directionality of the startle response to infrasound, and that the response is triggered by the synergistic effects of acceleration and compression.

Involvement of Islet-2 in the Slit signaling for axonal branching and defasciculation of the sensory neurons in embryonic zebrafish

In Drosophila melanogaster, Slit acts as a repulsive cue for the growth cones of the commissural axons which express a receptor for Slit, Roundabout (Robo), thus preventing the commissural axons from crossing the midline multiple times. Experiments using explant culture have shown that vertebrate Slit homologues also act repulsively for growth cone navigation and neural migration, and promote branching and elongation of sensory axons. Here, we demonstrate that overexpression of Slit2 in vivo in transgenic zebrafish embryos severely affected the behavior of the commissural reticulospinal neurons (Mauthner neurons), promoted branching of the peripheral axons of the trigeminal sensory ganglion neurons, and induced defasciculation of the medial longitudinal fascicles. In addition, Slit2 overexpression caused defasciculation and deflection of the central axons of the trigeminal sensory ganglion neurons from the hindbrain entry point. The central projection was restored by either functional repression or mutation of Robo2, supporting its role as a receptor mediating the Slit signaling in vertebrate neurons. Furthermore, we demonstrated that Islet-2, a LIM/homeodomain-type transcription factor, is essential for Slit2 to induce axonal branching of the trigeminal sensory ganglion neurons, suggesting that factors functioning downstream of Islet-2 are essential for mediating the Slit signaling for promotion of axonal branching. (C) 2004 Elsevier Ireland Ltd. All rights reserved.

‘The past was never simply there to begin with and the future is not simply what will unfold’ : a posthumanist performative approach to qualitative longitudinal research

Peer reviewed

‘The past was never simply there to begin with and the future is not simply what will unfold’ : a posthumanist performative approach to qualitative longitudinal research

Peer reviewed

‘The past was never simply there to begin with and the future is not simply what will unfold’ : a posthumanist performative approach to qualitative longitudinal research

Peer reviewed