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Regulatory documentation, laws, orders on labor protection

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Occupational Safety and Health

You can download free and without registration a selection of documents on labor protection, 2060 documents in thematic archives



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Occupational Safety and Health



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Basics of safe life

Fundamentals of First Aid



Latest news of science and technology, new electronics:

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 ... >>

Electron spin for quantum information transfer 18.05.2024

The transfer of quantum information remains one of the key tasks of modern science. Recent advances in the use of electron spin to expand the capabilities of information transfer in quantum systems have become very important. Researchers at Lawrence Berkeley National Laboratory are pushing the frontiers of quantum information science by experimenting with the possibilities of electron spin. Electron spin, a natural quantum bit, is a potentially powerful means for storing and transmitting information in quantum systems. Magnon wave packets, collective excitations of electron spin, have revealed their potential to transmit quantum information over significant distances. The work of Berkeley Lab researchers has revolutionized the way such excitations propagate in antiferromagnets, opening up new prospects for quantum technologies. Using pairs of laser pulses, scientists disrupted antiferromagnetic order in one place and simultaneously studied it in another, creating ... >>

Sound-absorbing silk 17.05.2024

In a world where noise is becoming increasingly intrusive, the emergence of innovative materials that can reduce its impact is of great interest. MIT researchers have unveiled a new sound-absorbing silk fabric that promises to revolutionize quiet spaces. The Massachusetts Institute of Technology (MIT) has made significant breakthroughs in the field of sound absorption. Researchers have developed a special silk fabric that can effectively absorb sound and create cozy, quiet environments. The fabric, thinner than a human hair, contains a unique vibrating fiber that is activated when voltage is applied to it. This feature allows the fabric to be used to suppress sound waves in two different ways. The first method uses fabric vibrations to generate sound waves that cover and cancel out unwanted noise, similar to noise-canceling headphones. This p ... >>

Random news from the Archive

water croquette 13.11.2004

A curious physical effect was demonstrated by employees of the University of Arizona (USA).

They placed water droplets on a water-repellent surface created by growing a "lawn" from silicon "blades" of 20 to 50 nanometers in diameter on a silicon wafer. On such a surface, the droplet is collected into an almost perfect ball. Silicon "blades of grass" were dressed with a light-sensitive water-repellent compound spiropyran, which becomes hygroscopic under the influence of ultraviolet light.

If we now direct a narrow beam of an ultraviolet laser at the area of ​​the coating in front of the water droplet, this spot will begin to attract water, and the droplet will move towards it. By moving the beam, you can drive the water ball along trajectories of any complexity.

The new effect will be useful when creating micropumps for ultra-small volumes of various aqueous solutions. For example, a microchip laboratory is being designed that will be able to carry out up to 30 different tests on one drop of blood, saving the patient from donating significant amounts of blood for tests, and the doctor from waiting for the results for a long time.

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