Ensuring the good functioning of the world economy, the rising trends of oil prices, as well as the strong awareness of environment protection issues, have brought the sustained promotion of alternative energy sources. Bio fuels, as possible substitutes for gasoline and diesel, have acquired a...

Romanian Abstract: În contextul actualei crize economice, reducerea costurilor are o importanţă deosebită în orice domeniu de activitate. Totodată, conformarea cu cerinţele de mediu reprezintă de asemenea un factor esenţial. Datorită acestor aspecte, analiza eco-economică,...

In the Eulerian approach the behavior of the atmospheric pollutants is described relative to a fixed coordinate system. Thus the pollutant concentration is a function depending on the system coordinates and must satisfy the material balance taken over a volume element. Expressed mathematically,...

In the current document we are referring to the existing data concerning the impact that benzene - which is one of the most important components of different types of fuels - has on Bucharest and on its inhabitants. We are also trying to present possible solutions to this serious problem which...

The present study wishes to bring to the attention of the reader the alarming impact that the common benzene molecule has on the environment, with unimaginable implications on the human being. Although it has a great economic importance, being used in many industries, specialists are underlining...

In the paper, considerations on the destruction process of the stratospheric ozone by substances emitted by anthropogenic pollution sources and which reach in the stratosphere by transport from the troposphere are presented. In the stratosphere, the lifetime of these substances is less than in...

In the Lagrangian approach to the turbulent diffusion the species concentrations are described relative to the moving fluid. This approach is concerned with the behavior of the fluid particle existing in a carrying turbulent fluid. Lagrangian theory describes the statistics of the pollutant...

Lucrarea se doreste a fi un studiu amplu, prin generozitatea problematicii expuse, cu privire la premisele si perspectivele asigurarii competitivitatii industriei de salubritate la nivel national si european. In urma prezentarii contextului actual, a pricipalelor companii de salubritate active...

Lucrarea isi propune sa identifice cauzele datorita carora sistemele de management a deseurilor urbane din majoritatea capitalelor continentului african inregistreaza un real declin comparativ cu managementul deseurilor din europa si din Intreaga lume. Paradoxul prezinta o dubla dimensiune. Pe...

Romanian Abstract: Conform datelor publicate de Institutul Internaţional de Studii privind Cupru (I.C.S.C.), producţia mondială de cuprului s-a majorat în anul 2016 cu 2,33%, iar consumul mondial a crescut cu 1,85%. Potrivit acelorași analiştilor din cadrul I.C.S.C., balanţa mondială...