The cytology of a new microsporean parasite Microsporidium epithelialis sp. n. from the intestinal epithelial cells of the freshwater oligochaete Tubifex sp. (Tubificidae) is described. The microsporean occurred together with an actinosporean of the genus Triactinomyxon, which was found between the epithelial cells. The merogonic and sporogonie stages (mature spores included) of the microsporean parasite are monokaryotic. An individual sporophorous vesicle surrounds each spore. The fixed and stained spore has an average dimension of 1.9-2.5 x 0.9-1.2 pm. The spores are oval with a characteristic surface layer, showing ornamentation-like projections, which are in close contact to the exosporc. A short polar filament forming three to four coils traverses the polaroplast with two lamellar layers. The ultrastructure and other characteristic features of this microsporean parasite are distinct from those of the microsporean species described so far from oligochaetes.
Experimental measurement is performed on a simple fibre-mass system: a moving mass coupled with the frame by a fibre. Dynamic response of the mass is measured. The same system is numerically investigated by means of a simple multibody model. The influence of the model parameters on the coincidence of results of experimental measurements and of simulations are evaluated. The simulations aim is to create a phenomenological model of a fibre, which will be utilizable in fibre modelling in the case of more complicated mechanical or mechatronic systems. and Obsahuje seznam literatury
This essay aims to describe hitherto unknown notes of aesthetics lectures given by August Gottlieb Meißner (1753-1807) at Prague University. It compares these notes (made by a certain Wagner, and deposited in the Wienbibliothek im Rathaus) with notes deposited in Czech libraries, and seeks to determine their place chronologically amongst notes made by others attending Meißner’s lectures over the years. The most important difference in content between the earlier known notes and Wagner’s is Meißner’s negative attitude towards the Schlegel brothers. This attitude slightly alters our existing notion of his views on the relationship between literature and morality. Taken alone, the collections of notes in Czech libraries had led one to conclude that this Prague ordinarius was an ardent libertine, who dared, even at a conservative Austrian university, to push for the autonomy of art, including a thorough split between art and morality, regarding not only works of art, but also, to a certain extent, the artists themselves. By contrast, the Vienna MS as a matter of priority restricts this split to art, and limits it to the higher, moral aims of the artist as citizen. His approach to questions of morality and to the Schlegel brothers demonstrates that while Meißner considered himself part of the liberally enlightened current of contemporaneous literature, which made moving the emotions the central aim of art, he was no longer an adherent of upandcoming Romanticism with its extreme conviction about unlimited authorial liberty, which stemmed from the philosophical Idealism of the times. This attitude to the Schlegel brothers also suggests that Wagner attended Meißner’s lectures in aesthetics and rhetoric in the winter of 1800/1., Tomáš Hlobil., and Obsahuje bibliografické odkazy
Let X be a completely regular Hausdorff space, E a boundedly complete vector lattice, Cb (X) the space of all, bounded, real-valued continuous functions on X, F the algebra generated by the zero-sets of X, and µ: Cb (X) → E a positive linear map. First we give a new proof that µ extends to a unique, finitely additive measure µ: F → E + such that ν is inner regular by zero-sets and outer regular by cozero sets. Then some order-convergence theorems about nets of E +-valued finitely additive measures on F are proved, which extend some known results. Also, under certain conditions, the well-known Alexandrov’s theorem about the convergent sequences of σ-additive measures is extended to the case of order convergence.