Electrical grounding is essential for an electric power distribution system, even more so in networks with ground return. Amid the expansion of rural networks, the cost of a three-phase power grid can make the project ...

Electromagnetic transients on underground power cables are highly influenced by the natural resistivity of the ground. Modeling earth-return impedances of a system may properly consider the resistive losses due to the ...

The dynamics of the circular restricted three-body Earth-Moon-particle problem predicts the existence of the retrograde periodic orbits around the Lagrangian equilibrium point L1. Such orbits belong to the so-called family ...

We present a semiempirical method to study the production and propagation of atmospheric secondary protons with energy>100 Mev, moving in the vertical direction. The derived production functions are fitted by the least-square ...

We present a semiempirical method to study the production and propagation of atmospheric secondary protons with energy>100 Mev, moving in the vertical direction. The derived production functions are fitted by the least-square ...

Electromagnetic transients on underground power cables are highly influenced by the natural resistivity of the ground. Modeling earth-return impedances of a system may properly consider the resistive losses due to the ...

This paper presents an alternative solution based on infinite series for the accurate and efficient evaluation of cable earth return impedances. This method uses Wedepohl and Wilcox’s transformation to decompose Pollaczek’s ...

This study aimed at determining the scale efficiency in tambaqui production in earth ponds developed in the metropolitan region of Manaus-AM. Eleven fish farms were analyzed and their data were sampled regarding its ...