Biomedical subjects
A Jackowska
Publications and source records attributed to A Jackowska.
[Usefulness of the indirect immunofluorescence method in the serological diagnosis of rabies].
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[Occurrence of antigenic variants of influenza type A H1N1 and H3N2 in swine].
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Sensory characteristics of 2-heptanone. Part I. Threshold values, concentration/odour intensity relations, methodological aspects.
The evaluation of threshold values and concentration/odour intensity relations for 2-heptanone has been carried out in two laboratories applying strictly uniform materials, methods and laboratory procedures. The results obtained in aqueous and oil medium are discussed taking into consideration the influence of methods and judges as variability factors. It has been concluded that standardization of the methods and detailed laboratory procedure seem to be critical factors for inter-reproducibility of the results in various sensory laboratories.
Denitrification of high concentrations of nitrites and nitrates in synthetic medium with different sources of organic carbon. II. Ethanol.
The course of denitrification of nitrites and nitrates (1000 mg N/l) in medium containing ethanol as a source of organic carbon was studied. Continuous cultures of a mixed population of autochtonous microflora isolated from the bottom sludge of a nitrogenous wastewater reservoir were set up in two types of culture units: chemostat-type column and anaerobic packed bed reactor. In medium with nitrites denitrification was found to be strongly inhibited by alkalization of the medium (efficiency of denitrification 17.7 mg N/l/h). When pH was adjusted the efficiency of nitrite denitrification was identical as for nitrates (166.3 mg N/l/h). The denitrification of 1 g of nitrate or nitrite nitrogen was found to require 2.00 and 1.28 g ethanol, respectively.