This work proposes improve the study about the efficiency indicators development, to be use in irrigation equipment for pivot. At first, it sought to make some clarifications about the current state of the irrigations ...

In pursuit of knowledge about the performance of agricultural tractors on the market and make the appropriate selection of attachments for each tractor, the research has presented mathematical models as an important tool ...

The development of math models can available a tool to estimate and understand the behavior of the system in face of diferent situations, helping in the decision-making process, through a simplified representation of ...

Water shortages in certain periods have led to serious social conflicts, as well as economic and environmental impacts resulting from irrigated agriculture, especially of rice growing, which represents a high demand of ...

An experiment of surface and subsurface drip irrigation in figs was held in Santa Maria, Rio Grande do Sul state, with aim of evaluate the disposables materials efficiency for protecting water emitters in subsuperface ...

The tomato (Lycopersicon esculentum Mill) is an important crop in the world and an important product for trade "in nature and for industry. The amount of fungicides used in tomato crop for control of diseases is high and ...

In the cassava production the conventional tillage, characterized by soil preparation with intensive mobilization, is commonly used. However, when this practice results in the maintenance of small quantities of straw on ...

In this work we present the results of a systematic study of the stability, and the electronic, stuctural and magnetic properties of graphene nanoribbons doped with Ni (Ni/GNR) and Mn (Mn/GNR), through ab initio density ...

Impedance Spectroscopy has been performed at the metal-semiconductor transition of vanadium dioxide thin films. The samples have been deposited by reactive magnetron sputtering onto heated glass substrates. The crystallographic ...

This work is dedicated to investigate the spin relaxation in amorphous CoFeSiB glass-covered microwires and multilayered films of Permalloy/Cu. The microwires samples were Joule annealed and axially stressed in order to ...