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Fundamentals of First Aid (OPMP)

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Fundamentals of First Aid (OPMP)



Latest news of science and technology, new electronics:

Blinking of the magician and his audience 19.05.2024

Magic and illusions have always captured the attention of the public, but what happens behind the scenes of the magician and in the brains of his audience? Scientists from the UK decided to solve this mystery by conducting a new study involving ten illusionists of varying experience. Illusionists, some of whom had been practicing magic for more than half a century, others for only six months, were invited to demonstrate the same trick - the popular coin trick. Recordings of their performances during training and on stage showed that each of them began to blink significantly more often at the moment of performing the trick. The study's findings indicate that magicians' blink rate may be related to unconscious aspects of their performance. At the same time, as scientists have found, spectators also begin to blink more often, following the movements of the illusionist. This observation supports the idea that magicians may be catalysts for blinking in audiences. Additional research has shown that magicians blink more often during ... >>

Ultrasonic coffee machine 19.05.2024

Iced coffee has become an integral part of coffee culture in recent years. Therefore, engineers from the University of New South Wales decided to improve its preparation. They have developed an ultrasonic coffee machine that reduces the cold brew time for ground coffee beans from 12-24 hours to significantly less time. Iced coffee, or "Cold brew", is popular due to its smoothness, low acidity and low bitterness. It is prepared by steeping ground coffee in cold water for a long time. Unlike traditional hot brewing, which often imparts bitterness to coffee, cold brewing extracts more delicate and complex flavors from the coffee beans. The innovative system, presented by a team of engineers, introduces ultrasonic technology into the coffee preparation process. The system uses ultrasonic waves to speed up the process of extracting oils, flavor and aroma from ground coffee. This allows you to significantly reduce the time ... >>

The speech of sperm whales is similar to that of humans 18.05.2024

In the world of the ocean, where the mysterious and unknown coexists with the studied, sperm whales, with their huge brains, are of particular interest to science. Researchers, working with a huge array of audio recordings collected during the Dominica Sperm Whale Project (DSWP) - more than 8000 recordings, seek to unravel the secrets of their communication and understand the structure and complexity of the language of these mysterious creatures. By studying in detail the recordings of 60 sperm whales in the eastern Caribbean, scientists have revealed surprising features of their communication, revealing the complexity of their language. "Our observations indicate that these whales have a highly developed combinatorial communication system, including rubato and ornaments, which indicates their ability to quickly adapt and vary during communication. Despite significant differences in evolution, sperm whales have elements in their communication that are characteristic of human communication," says Shane Gero, a biologist at Carleton University and director of the CETI project. Issl ... >>

Random news from the Archive

Production of lithium-ion batteries will grow by 390% 29.01.2012

A new report from analyst firm IDC Energy Insights forecasts an explosive growth in lithium-ion battery production from 6,689 MWh in 2011 to 26,149 MWh in 2015, i.e. about 390%. This growth will mainly be driven by the advent of electric vehicles and the need for stationary batteries.

Electric vehicle production worldwide will increase by more than seven times compared to 2011, and by 2015 the total battery capacity will reach 17,331 MWh. This year, North America is the largest consumer of these products, but Asian manufacturers will soon take its place. If the cost of lithium-ion batteries declines, the demand for stationary batteries worldwide will increase 17 times compared to 2011 and reach 640 MWh in 2015.

To meet this demand, several manufacturers intend to build one of the largest factories in the history of the industry. These companies include Panasonic (Japan), Samsung SDI (South Korea) and Johnson Controls (USA), as well as smaller market players A123 (USA), Electrovaya (Canada) and BYD (China). In the United States, the production of lithium-ion batteries is stimulated by the American Recovery and Reinvestment Act, which provides grants for this activity. However, the largest share of lithium-ion battery production is in Japan, South Korea and China. The governments of these countries have placed the production of lithium-ion batteries in the sphere of national interest and have invested heavily in the creation of new factories.

Lithium-ion batteries are the most preferred type of devices that find use in a wide range of systems ranging from electric vehicles to computers and household power tools. Such popularity of batteries is explained by their flexible functionality, long service life, sufficiently high energy density and other characteristics. The only drawback that affects the wider use of this type of batteries is their price: they are much more expensive than other types of batteries. However, the gigantic increase in production capacity will lead to a significant reduction in the cost of these devices.

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