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Flammable liquids in motion when is transporting by pipes, is mixing, pumping, filtering, agitating or by pouring them from one vessel to another can generate static charges even if the respective pipes or vessels are bonded and earthed. Also, loads may occur if the liquid is splashes and forms a mist inside the vessel (tank, container). Accumulation of static electricity can, under certain conditions, be discharge and ignite the explosive atmosphere. In the paper are presented some aspects regarding the technical...

In this paper we propose the criteria of an information model that will allow, based on input expert data, to derive a risk assessment of unmanned aerial vehicle (UAV) flights for mountainous environmental studies. To create an information model, it is necessary to develop a mathematical model of risk assessment and informative content of the model within the framework of the problem under study. For the model input, there is a space of mountainous terrain for which we define set of criteria as a threat to safety ...

This study is investigating the influences and effects of the chaotic exploitation of mineral aggregates and its direct impact on the evolutionary forms of the Siret River. The study is important due to the decommissioning of agricultural land caused by river erosion in the area of Gala?i County. After the comparative analysis of the new topographic plan with the old soil map, we identified how the area, exploited by private companies in order to extract mineral aggregates, i.e. sand and gravel mostly used in the ...