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• The Comparative Analysis of the Microbial Communities of Activated Sludge

  87-101

  Dóra Sipos

  Roland Miseta

  Anikó Zseni

  Views:

  155

  The composition of the microbial communities in the activated sludge was thought mostly chaotic and unpredictable, but due to the new studies and breakthroughs in the past decades, now it is known that specific, accidental and non-accidental factors are responsible for the structure of the microbial community. The aim of the study is to compare the microbial communities of activated sludge of one large and two small wastewater treatment plants. During our research 14 months of data were processed. After the sample analysis and data processing, the diversity and seasonal changes of the community structures revealed. The results of the statistical analysis show that the larger system has more diverse community structure.

• Development of engineering and innovation skills

  364-369

  Rita Nagyné Kondor

  Dóra Sipos

  Views:

  157

  Spatial visualization skills have an important role in teaching and learning of engineering studies. Many studies have shown that there are correlations between various measures of spatial skills and performance in particular Science, Technology, Engineering and Mathematics (STEM). Many engineering students have problems with solving mathematics problems, using mathematical models in practice, imagining a spatial figure and therefore to solve the spatial geometry exercises, so development of these abilities is very important. We have developed special tools and worksheets for development of engineering and innovation skills.

• The Analysis of the Seasonal Changes of Microbial Communities in the Activated Sludge of Small and Large Wastewater Treatment Plants

  321-340

  Dóra Sipos

  Roland Miseta

  Anikó Zseni

  Views:

  127

  In our research the seasonal changes of the microbial communities in the activated sludge of one large and two small wastewater treatment plants are observed and analysed. During the research, 14 months of data were processed. After the sample analysis and data processing, the research revealed the efficiency of the ecological system, and also showed the seasonal changes of the community structures. The results of the statistical analysis show, that the seasonality is less observable in the case of the larger system. Presumably, the larger bioreactors have more stable microbial composition. In addition, we searched for more connections between the components of the ecological system, the changing in the weather, and also in the efficiency in the process for treating wastewater.

• A numerikus számítások szerepe a műszaki modellekben

  76-83

  Dóra Sipos

  Views:

  117

  Application of numerical methods and stochastic approach should have a bigger role in the Mathematics programme of the secondary schools. Studying economic and engineering problems leads to better understanding of the significance of mathematical models in practice. In our mini-course we introduce several topics related to mathematical modelling of systems and processes to present the applicability of mathematical  calculation methods in the everyday life.