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In this article the air infiltration through the envelope of a naturally ventilated building, located in Bra?ov (Romania) is studied. The paper presents the study of the factors which influence the air infiltration ? wind effect and stack effect ? and the modeling of air change rate (ACH) inside the building, by Multiple Linear Regression (MLR) modeling. It has been found that ?T can be a good predictor of ACH because of its high physically correlation with this. Another conclusion of the study is that although wi...

This paper presents macro- and micromorphological, mineralogical and physicochemical characteristics of solonetzic processes that developed within a 14-cm-thick plough (P) layer of non-ameliorated Solonetz over a 50-year-long period of its post-agrogenic evolution. These processes have resulted in the formation of a microporofile with micromorphological features of eluvial-illuvial differentiation within the former plough layer. The mineralogical analysis of particle-size fractions (?1, 1?5, 5?10, >10 ?m) of the p...

Nowadays, after intervals of time without rainfall, heavy rain with very high flow rates in very short time are increasingly more often. If extreme rainfall events, storm sewer networks can not take storm water flows, which frequently occurs with flood damage large, often with loss of life. Duet o the fact that rainwater flows to the emissaries in time, the water table drops. Analyzing the frequency of extreme phenomena rainfall and using climate scenarios we can adapt technical regulations related to sizing colle...