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Supergrids: the challenging comeback of direct current

Οκτ 27, 2016 12:20

The number of infrastructural direct current programmes is increasing all over the world, widening the gap between energy producers and energy consumers. But alternating current will not disappear: “meshed grids” are the future.

Today the challenge is to enable better transmission from one country to another while reducing CO2 with efficient links between renewable energy and the grid. This is where the high-voltage direct current (DC) supergrids come in: they add to and sometimes replace the old high tension alternating current grid (AC).

Robots in distress in the Venetian Lagoon

Οκτ 27, 2016 12:16

Two British artists are designing an unconventional fleet of autonomous devices that can help fight pollution in the lagoon environment of Venice.

New materials with photonic crystals that filter radiation are designed

Οκτ 27, 2016 12:15

A piece of research by the NUP/UPNA-Public University of Navarre has proposed various designs of materials of a photonic crystal type that can be used to filter radiation. Specifically, the focus has been to develop a coating comprising dielectric spheres which if applied to a window, for example, would prevent the outside heat entering in the summer and the indoor heat from escaping in winter.

Do microbes control our mood?

Οκτ 27, 2016 12:13

Research on gut bacteria may change the way we look at anxiety, depression, and behavioural disorders.

If aliens were to examine a human, they would think we were just slavish organisms designed to feed microbes and carry them around. Our bodies contain ten times more bacteria than cells, and there are an estimated 3.3 million genes in the total bacteria DNA, which is 160 times the number of human genes. Our intestine hosts about one kilogram of bacteria which help to digest and metabolise food, produce vitamins and protect us from infections.

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