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1

Microbiological, sanitary and epidemiological analysis of the biological membrane and effluent of the packed-bed reactor in the biomembrane system applied to the removal of nitrates from ground water

100%
Wasik E., Blaszczyk M., Bohdziewicz J.
Biotechnologia
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1999
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issue 4
151-160
EN
The paper presents results of the microbiological research on the biological membrane of anaerobic packed-bed reactors (including pathogens) and post-culture effluent in the cultures of denitrifying bacteria in the medium containing: nitrates from ground water and ethanol, sodium acetate or methanol in the hybrid system biological denitrification-ultrafiltration. First, the most effective and safe source of carbon and energy in the cultures of denitrifying bacteria was determined, and subsequently, the post-culture effluent was subjected to ultrafiltration. Methanol has proved to be the most effective source of carbon. Pathogenic bacteria and bacteria which reduce sulphates have not been found in this culture.
2
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The spontaneous theta rhythm recorded from the hypocalmus posterior in the cat in vivo

88%
Grabowski R., Blaszczyk M., Eckersdorf B., Golebiewski H., Konopacki J.
|
EN
Rhythmical slow activity (theta) was mapped in the hypothalamic regionin freely moving cats. We recorded well synchronized and high amplitude theta rhythm in the medial part of hypothalamus posterior area. The EEG recordings made from lateral part of this hypothalamic region contained only irregular activity. These findings support earlier observations concerning the topography of hippocampal formation desynchrony and synchrony system. The observations of the present study also suggest that the hypothalamus posterior area is actively involved in the mechanisms responsible for generating theta oscillations in the cats.
3
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The rhytmic slow activity recorded from enthorhinal cortex in freely moving cats

88%
Blaszczyk M., Grabowski R., Eckersdorf B., Golebiewski H., Konopacki J.
Acta Neurobiologiae Experimentalis
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1996
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vol. 56
|
issue 1
161-164
EN
The relationships between the entrohinal cortex (EC) and the hippocampal formation (Hipp) field potentials were examined in the present study. The detailed analyses of the signal let us group the patterns of theta appearance into three categories: (1) Theta rhythm dominating in both recordings from the EC and from Hipp (2) Theta rhythm dominating in the Hipp with irregular activity in the EC (3) Theta rhythm dominating in the EC with irregular activity in the Hipp. These findings provide the evidence for the intrinsic generator of theta rhythm to be localized in entorhinal cortex in cats.
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