As a result of several fi eld trips made into the Komovi Mts, 200 bryophyte taxa (43 liverworts and 157 mosses) were collected. Four species are reported for the fi rst time in the country. Among the species recorded, six are red-listed in Europe.
As energy and equipment costs increase, optimal production of steam becomes economically more important in the industry. In this investigation, a linear programming model has been developed to optimize the performance of a steam boiler by minimizing its total life-cycle costs. For different types of fuel, costs of fuel, investment, and production of steam, the model predicts the optimal size of the entire steam boiler and its parts. Investigations show that this approach may maximally yield savings of up to 30 per cent.
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