Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library


Fundamentals of Safe Life Activities (OBZhD)

Fundamentals of Safe Life Activities (OBZhD)

 


 

Survival in offline conditions

 


 

Healthy lifestyle

 


 

Personal safety

 


 

National security

 


 

Industrial safety

 


 

social security

 


 

Emergencies and civil defense

 


 

Environmental Safety

 


 

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

Dangerous hydroelectric power station 16.08.2012

Hydroelectric power is generally considered to be "environmentally friendly". In fact, nothing is burned here, the air is not polluted and no waste remains.

However, the case of the Chinese Three Gorges hydroelectric power station on the Yangtze River, the most powerful in the world, casts doubt on the harmlessness of hydroelectric power stations. Although the hydroelectric power plant should finally be put into operation only at the end of 2012, when the last three turbines will start working, the unpleasant consequences are already clear. A reservoir of 1080 square kilometers formed in front of the dam sank 13 cities and 466 villages, and 1,3 million people had to be relocated. After the construction of the dam, the water of the Yangtze became undrinkable, as toxic microalgae multiplied in the stagnant water of not only the river, but also its 22 tributaries.

The existence of the rarest species of animals - the river dolphin and several species of fish - is under threat. At the bottom of the reservoir, silt and sand brought by water are accumulating faster than expected. Over the next ten years, at least $27 billion will have to be spent on mitigating these consequences. This is four billion more than the cost of the construction itself.

Other interesting news:

▪ Revealed the secret of mosquito squeak

▪ USB 3.0 up to 100m

▪ New IGBT SEMiX modules

▪ Nuclear mining center

▪ Slim, flexible NEC battery charges in 30 seconds

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site Mobile communications. Article selection

▪ article Fundamentals of social work. Crib

▪ article What is the danger of using dihydrogen monoxide? Detailed answer

▪ Cardone article. Legends, cultivation, methods of application

▪ article Telegraph machine for a repeater. Encyclopedia of radio electronics and electrical engineering

▪ article Field effect transistors. Encyclopedia of radio electronics and electrical engineering


All languages ​​of this page

Home page | Library | Articles | Website map | Site Reviews

www.diagram.com.ua

www.diagram.com.ua
2000-2024