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Seal in touch

13.12.2002

Unlike the hero of the "Telephone" Chukovsky, the staff of the University of St. Andrew (Scotland) are happy when another seal calls them. They glue miniature radio beacons provided by the German company Siemens to the fur of newborn seals.

The device, which works through the cellular telephony network, from time to time sends messages about the activity of the seal to the university computer. If there are no messages for several days, the animal is considered dead.

Of the approximately 38 gray seals born every November in colonies of these mammals on the coast of Britain, only half survive to their first birthday, but there is no exact data yet. In the future, scientists intend to add a depth gauge and a positioning device to a simple motion sensor in radio beacons in order to accurately record migration routes and the depth at which animals hunt.

The device stays on the skin of a seal for no more than a year and disappears during the next molt.

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Pollen batteries 25.02.2016

Pollen is a burden for bees and suffering for allergy sufferers. But it can also serve as an effective way for us to store energy. Researchers have figured out how to turn pollen grains into anodes, the components of batteries.

In order to turn the pollen into anodes, the scientists heated the pollen to the point where it turns into carbon using a pyrolysis process. Unlike ordinary combustion, this process takes place without oxygen, and the pollen does not ignite, but turns into biochar, which retains the shape of the pollen. Then it is heated again with the participation of oxygen, this process increases the amount of stored energy in the anodes.

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The researchers tested two different types of pollen: one collected from bees, where pollen from different plants is found, and one from reeds, which has a more uniform structure. It turned out that reed pollen has slightly higher indicators than bee pollen, but it is much easier to collect pollen from bees. In the future, the researchers plan to conduct experiments on the use of such anodes in real batteries. "We've basically created an interesting concept now," says researcher Vilas Pol. "Only further work will show how practical it will be."

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