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• The Comparative Analysis of the Microbial Communities of Activated Sludge

  87-101

  Dóra Sipos

  Roland Miseta

  Anikó Zseni

  Views:

  258

  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.

• Controlling a Wind Instrument with the Help of PROFINET Industrial Protocol

  123-128

  Tibor Liptai

  János Tóth

  Géza Husi

  Views:

  204

  Nowadays, the industrial communication networks are the one of the most important research area in advance control systems. It is necessary to think about controlling tasks at system level instead of local solutions. There are different types of protocols developed for communication between industrial controlling devices.

• Relationship between the Lean and Agricultural Companies

  370-381

  Vivien Ágnes Nagy

  Tímea Kozma

  Antal Balogh

  Views:

  337

  Eliminating losses is a daily challenge for both: companies and individuals in society. Whether through the production or office work, we are wasting the most important human needs: time and energy with useless things and processes. Both are an integral part of our daily lives and are particularly important for agricultural companies. In our study, we look at the relationship between Lean and agricultural companies. We outline the risks associated with these seven Lean Losses at these companies, and how these problems can be corrected and eliminated using current methods. Our research sheds light on how technological innovations affect and influence the position of companies in the market and in financial and human resources. We examine the benefits and drawbacks of the innovations applied and the Lean processes used, and how they affect the environment around them.