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First aid for a child. Childhood diseases

Fundamentals of First Aid / First aid for a child. Childhood diseases

Fundamentals of First Aid (OPMP)

Fundamentals of first aid. First aid for a child. Childhood diseases:



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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

Genes responsible for photosynthesis can increase crop yields 25.11.2016

Krishna Niyogi and his colleagues from the University of California at Berkeley (USA) studied three genes involved in photosynthesis and protecting plant cells from damage. Scientists have found that an increase in the expression of these genes in cultivated tobacco leads to an increase in its yield by 14-20%.

Plants are known to use the energy of sunlight during photosynthesis to take up carbon from the atmosphere and convert it into biomass that we can use as food, fuel and clothing. However, when there is too much sunlight, the chloroplasts in the plant cell can be damaged, so plants are equipped with a defense system. For this purpose, there is a system inside chloroplasts called NPQ (Non Photochemical Quenching). It protects cells from excessive solar radiation. Professor Niyogi compares it to the overpressure mechanism in a steam engine: "NPQ turns on and safely removes excess energy. In the shade, the pressure in the 'engine' decreases. NPQ turns off, but not fast enough. It's like a leak in a system with an open valve." , - he said.

By increasing the expression of three genes involved in NPQ, scientists have ensured that this system turns off faster, and the efficiency of photosynthesis even in dimly lit areas becomes higher.

"We used tobacco as a model crop because it's easy. But we're working to make the same changes in rice and other food crops. The molecular processes we've modified are fundamental to plants that carry out photosynthesis, so we hope to see a similar increase in yields in other crops," said Krishna Niyogi

The work to improve crop yields is becoming increasingly important as the world's population grows. The UN predicts that agricultural production will almost double by 2050 to meet growing demand. So far, yields of the world's major crops are not growing fast enough to meet this need.

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