It is an outline on the various intensification possibilities offered by wastewater treatment technologies and it is highlighted the practical applications based on concrete examples

The soda-water invented by Anyos Jedlik has an important tradition in Hungary. This popular - especially in the county - carbonated water filled in special siphon-bottles is produced by several hundreds of smaller and bigger soda-water works in Hungary. In this beautifully illustrated article the authors outline the history of this "hungaricum".

Melting processes of refrigerated fruits and vegetables (Jonathan apple, sour cherry, red currant, onion, cauliflower and cucumber) were studied using the DSC method. Prior to the tests apple and onion were stored without and the other products with refrigeration. The refrigerated products were melted in microwave space, then chopped and homogenized. Measuring was carried out with the juice obtained from the homogenized sample, and the sample containing the fibre was also measured. Besides the DSC examinations, the water content of the samples was also determined by drying in exsiccator at 105 C/degrees/ to constant weight. The DSC curve of the samples examined is a characteristic endotherm curve, with phase shift temperatures varying from product to product. An analysis of the temperature dependence of the phase shift temperature showed that at the beginning of intensive melting 7-23 o/o, while at the usual temperature of cold storage 1-10 o/o of the water content was in liquid state

The aims of the investigations were to estimate the biomass and the production of the macrozoobenthos and to know their season dynamics. Investigations were supported by Fishery's Foundation. Sediment chemical analysis showed that the macrozoobenthos biomass was determined by the quantity of the phosporus. Chironomid larvae formed the 70-90 per cent of benthos biomass in Keszthely basin.

The monkey goby originating from the Ponto-Caspian area, has appeared in increasingly wide-spread areas of Hungary. In the Tisza-to water reservoir in North-Eastern Hungary along the Tisza River, 83 first summer samples of the fish were collected in the vicinity of Tiszafured on October 21st, 2000. The average length of the fish, not including the caudal fins, was 50,4 mm, the average weight was 2.1 g. Their alimentari canals contained mostly gnats (Chironomidae), but also the relative amount of the taxons Copepoda, Ephemeroptera, Ostracoda and Odonata was notable.