China's metro: Smart tickets via face print without removing the mask

Chengdu Metro recently launched a "smart ticket" feature for passengers getting into cars; Passengers who want to use smart tickets can register in the Chengdu Metro app via a faceprint, and then they can pass the security gates equipped with facial recognition technology without removing their masks, according to China's People's Daily Online.

According to the newspaper, this feature has been circulated in 12 metro lines in Chengdu, including 287 stations.

In this context, this new purification will help increase the efficiency of transportation, provide more comfort for travelers and reduce the risk of transmission of epidemic infection inside the metro.

Innovating a wireless charging room that supplies energy to devices through the air

Top Scientists have developed a wireless charging chamber that can deliver power over the air to any computer setup, tablet or any phone without the need for any type plugs or cables.

According to the British newspaper "Daily Mail", this new technology depends on generating magnetic fields over long distances without producing electric fields that would be harmful to anyone inside the room, according to the developer team of the University of Tokyo.

The study authors explained that the new chamber contains a shaft in the middle that sends magnetic fields to every corner of it, and can provide up to 50 watts of power.

The researchers did not mention the potential cost of this new technology because it is still in a very early stage of development, as they indicated that it will not be available to the public sell on market until after “many years.”

And when it's finished, researchers can modify office rooms and homes to be similar to wireless charging rooms, which could eliminate the need for everyone to carry charging cables.

"This really powers the computing world," said Alanson Sample, a co-author of the room's development. "Any time, You can put a computer anywhere, so you want to sit without having to worry about a socket or cable."

Sample also pointed to the possibility of benefiting from this new technology medically as well, noting that it may help to wirelessly charge medical implants that are implanted in the heart, as these implants currently require a wire to pass through the body to charge them.

Today gadgets time, This is a new technology can eliminate that completely work for any type charging element's, and will work even reduce the risk of any type infection that might occur during the placement and removal of the any type wire. Sample added all.

Details of this new innovation were published in the journal Nature Electronics.

To preserve their brains in a study determines the optimal number of hours of sleep for the elderly

A new study confirms that older people getting between seven and eight hours of sleep each night is the optimal pattern to keep their brains healthy.

According to the British newspaper, “Daily Mail”, researchers from Stanford University in California said that people in old age who sleep less than six hours suffer from impaired cognitive function and higher levels of dangerous plaques in the brain associated with dementia, while their excessive sleep negatively affects them. On their memory, speed of reactions and flexibility of their thinking.

The study was conducted on nearly 4,500 people with an average age of 71 years from the United States, Canada, Australia and Japan.

Participants were asked to report how long they slept and to take cognitive tests to assess brain function.

Then, levels of amyloid beta protein were measured in the participants' brains, a protein that builds up in large amounts that leads to the formation of dangerous brain plaques linked to dementia and cognitive decline.

The results showed that people who slept seven to eight hours a day showed significantly better mental and cognitive skills than those who slept less than 6 hours, and those who slept more than 9 hours a day.

Study lead author Joe Weiner said: 'Those participants who reported shorter sleep duration had elevated levels of the amyloid beta protein, which significantly increases the risk of dementia. As for excessive sleep, it was associated with impaired executive functions of the brain, such as the ability to remember events, speed of reaction and flexibility of thinking, but it did not contribute to raising levels of amyloid beta.

Furthermore, the researchers found that levels of depression were higher in those who slept for very short or very long periods.

this new study was published in the journal JAMA Neurology department.