Pollution of natural reservoirs and oceans. OBZhD

BASICS OF SAFE LIFE
Free library / Directory / Basics of safe life

Pollution of natural reservoirs and oceans. Basics of safe life

Fundamentals of Safe Life Activities (OBZhD)

Water - the most important mineral on Earth, which cannot be replaced by any other substance. It makes up the majority of all organisms - plants and animals. Water is the habitat of many organisms, determines the climate and weather changes, helps to cleanse the atmosphere of harmful substances, dissolves, leaches rocks and minerals, transports them from one place to another, etc. For a person, water is of great production importance: it and transportation route, and energy source, and raw materials for products, and engine cooler, and purifier, etc.

The problem of maintaining water quality is currently the most urgent. Science knows more than 2,5 thousand pollutants of natural waters that adversely affect the health of the population, leading to the death of fish, waterfowl and other animals, as well as to the death of the flora of reservoirs. At the same time, not only poisonous chemical, oil pollution and an excess of organic and mineral substances that come with the washout of fertilizers from the fields are dangerous for aquatic ecosystems. An important aspect of the pollution of the Earth's water basin is thermal pollution - the discharge of heated water from industrial enterprises and thermal power plants into rivers and lakes.

Authors: Aizman R.I., Krivoshchekov S.G.

We recommend interesting articles Section Basics of safe life:

▪ Ionizing radiation and their effect on the body

▪ Military duty and its content

▪ List of OBZhD and GO terms

See other articles Section Basics of safe life.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

A New Way to Control and Manipulate Optical Signals 05.05.2024

The modern world of science and technology is developing rapidly, and every day new methods and technologies appear that open up new prospects for us in various fields. One such innovation is the development by German scientists of a new way to control optical signals, which could lead to significant progress in the field of photonics. Recent research has allowed German scientists to create a tunable waveplate inside a fused silica waveguide. This method, based on the use of a liquid crystal layer, allows one to effectively change the polarization of light passing through a waveguide. This technological breakthrough opens up new prospects for the development of compact and efficient photonic devices capable of processing large volumes of data. The electro-optical control of polarization provided by the new method could provide the basis for a new class of integrated photonic devices. This opens up great opportunities for ... >>

Primium Seneca keyboard 05.05.2024

Keyboards are an integral part of our daily computer work. However, one of the main problems that users face is noise, especially in the case of premium models. But with the new Seneca keyboard from Norbauer & Co, that may change. Seneca is not just a keyboard, it is the result of five years of development work to create the ideal device. Every aspect of this keyboard, from acoustic properties to mechanical characteristics, has been carefully considered and balanced. One of the key features of Seneca is its silent stabilizers, which solve the noise problem common to many keyboards. In addition, the keyboard supports various key widths, making it convenient for any user. Although Seneca is not yet available for purchase, it is scheduled for release in late summer. Norbauer & Co's Seneca represents new standards in keyboard design. Her ... >>

The world's tallest astronomical observatory opened 04.05.2024

Exploring space and its mysteries is a task that attracts the attention of astronomers from all over the world. In the fresh air of the high mountains, far from city light pollution, the stars and planets reveal their secrets with greater clarity. A new page is opening in the history of astronomy with the opening of the world's highest astronomical observatory - the Atacama Observatory of the University of Tokyo. The Atacama Observatory, located at an altitude of 5640 meters above sea level, opens up new opportunities for astronomers in the study of space. This site has become the highest location for a ground-based telescope, providing researchers with a unique tool for studying infrared waves in the Universe. Although the high altitude location provides clearer skies and less interference from the atmosphere, building an observatory on a high mountain poses enormous difficulties and challenges. However, despite the difficulties, the new observatory opens up broad research prospects for astronomers. ... >>

Random news from the Archive

martian cities 16.09.2013

The huge Martian crater Aram Chaos was formed as a result of the catastrophic melting of ice and the outflow of water from an ice-bound lake.

A new study by scientists from the University of Utrecht and Jacobs University Bremen has shown that the 280 km diameter and 4 km deep Aram Chaos crater's enigmatic relief was formed by the outflow of hundreds of thousands of cubic kilometers of water. In just about 1 month, liquid water, with a volume 4 times the volume of the waters of Lake Baikal, cut through a large valley 10 km wide and 2 km deep in the Martian surface. A heap of rocks remains in the Aram Chaos crater itself, but scientists believe that large reserves of water ice could still remain in the former giant water reservoir, which in the future can be used to supply the Martian settlement.

The Aram Chaos crater has long been of interest to scientists. The ancient impact crater has an unusually uneven bottom, "littered" with large pieces of rocks. Real chaos is going on inside and outside the crater: rugged terrain, which seems to have been plowed with giant plows and sown with boulders. Until now, scientists did not understand what exactly is causing this picture, but the results of the latest study, based on satellite observations and computer simulations, show that there was a real "water explosion" on Mars.

About 3,5 billion years ago, the then still intact impact crater Aram Chaos was filled with water ice, covered with a 2-km layer of rocks. A layer of ice, covered with a blanket of sand and stones, has been melting for millions of years under the influence of heat generated by the bowels of the planet. When there was too much water, the walls of the crater could not stand it and collapsed. The released water, hundreds of thousands of cubic kilometers, forever changed the terrain.

The most intriguing suggestion is that unmelted ice may still be present in various Martian craters, including the Aram Chaos crater. These vaults of ice are evidence that the once-aquatic planet has rapidly degenerated into a frozen cold world. On the other hand, craters with large reserves of ice can be an excellent place for the construction of future Martian settlements.

Other interesting news:

▪ Old people benefit from computer games

▪ Unmanned vehicles built the bridge themselves

▪ high speed train in korea

▪ Magnetars are more complex than thought

▪ Laser with record stability

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ website section LEDs. Article selection

▪ Noah's Ark article. Popular expression

▪ article What is the function of the ears in addition to hearing? Detailed answer

▪ article Helicopter crew. Standard instruction on labor protection

▪ article Sound watchman - tone generator. Encyclopedia of radio electronics and electrical engineering

▪ article Charger for four nickel-cadmium batteries. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages of this page

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