BACKGROUND: Suitable and useful usage of different kind of fertilizers is the main way for reformation and potential of soil fertility and increasing of crops yield. Microelements are the critical elements for plants; also play the important role in crop productivity where it is used in low rate. Optimum plant nutrition and maximum yield is achieved when nutrient elements are a...

We explore the implications of three basic and intuitive axioms for income redistribution problems: continuity, no transfer paradox stability. The combination characterizes in two-agent case a large family rules, which we call threshold rules. For each level total society, is considered agent. It impossible both agents to be below their respective thresholds. If an agent’s threshold, difference...

• We characterize the optimal shape of non-linear income and wealth taxes. Our model reproduces distribution in United States a dynamic general equilibrium setting. find that uniform flat tax on capital labor combined with lumpsum transfer is nearly optimal. The incremental welfare gains from steeper marginal taxes are small, especially when planner has strong preference for redistribution What...

conclusions pressure support ventilation, but not spontaneous breathing, induces a significant redistribution of ventilation towards the ventral region. the sensitivity of the support trigger appears to influence the distribution of ventilation only during the early phase of inspiration. background in supine position, pressure support ventilation causes a redistribution of ventilation towards t...

in this study, the turbulent kinetic energy redistribution process is investigated. to this aim, the direct numerical simulation (dns) of incompressible flow of a newtonian fluid through a channel at a shear reynolds number of reτ = 180 is used to produce a flow data base. then, these data are statistically analyzed. the turbulent kinetic energy redistribution is studied using the pressure-stra...