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Foldable keyboard

05.04.2000

You have to enter text into a pocket computer by drawing letters on its screen with a special pen, and the device understands far from every handwriting: you only need to write in a special computer font.

An American firm began producing a foldable keyboard that doubles the size of a PDA but makes it almost as comfortable to use as a larger one.

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A frost-resistant potato variety has been developed 04.11.2021

The ARS research team and their partners in Peru and the US combined two wild potato species from South America and developed hybrids that could withstand hard frosts. Work continued for several years, resulting in a variety with the greatest ability to tolerate frost.

According to John Bamberg, project manager and geneticist for ARS Vegetable Research in Madison, Wisconsin, the varieties went through rigorous testing before final selection to determine their cold tolerance.

For several years, a group of scientists from the United States and Peru have been evaluating potato varieties for frost resistance. Ultimately, wild potato varieties - Solanum acaule and Solanum commersonii - were selected for breeding work, which showed the greatest resistance to low temperatures.

The breeders then crossed the two varieties and evaluated their hybrids. Before the final selection, the varieties were thoroughly tested for resistance to cold. To do this, the team of scientists used a modified household freezer that mimics natural frost during the night and a laboratory test to measure the level of damage to cell membranes.

As a result, the bred potato variety was tested in the field in several regions of Peru, where it showed good yields and high frost resistance.

Frost damage can occur in any region and at any time throughout the United States. In 2019, potato farmers in eastern Idaho alone lost about 30% of their crop due to off-season frosts. Also, low temperatures can degrade the quality of the potatoes themselves, which can negatively affect the quality of seeds for the next crop.

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