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An accurate simulation of snowmelt infiltration rates for an area of Bucegi Mountains, during spring thaw, has been made using the snow routine of HYDRUS- 1D. The model is based on coupled flow and heat transport in the vadose zone. The snowmelt routine is based on degree day concept. As boundary conditions are used, surface water and heat fluxes can be calculated from the energy balance equation. The variables of the surface energy balance equation and melt rates can be calculated using meteorological data: air t...

The presence of heavy metals in environmental factors remains among the most important concerns at national and international levels, while at the same time novel biomaterials usually derived from agricultural wastes are designed and tested for their removal below admitted limits. In this respect efficiency of biosorption of Hg2+ and Pb2+ on corn cobs have been studied for different working parameters: initial solution concentrations of heavy metals, particle size of biomass and temperature. The kinetic model for ...

Plant growth-promoting rhizobacteria (PGPR) can effect plant growth and development in two different ways: indirectly or directly. Indirect promotion of plant growth occurs when these bacteria decrease or prevent some of the deleterious effects of phytopathogenic microorganism. The most important way is the direct way, when bacteria promote plant growth by providing the plant with a compound that is synthesized by the bacteria from plant rhizosphere. From this point of view there are many studies that show the imp...