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Oxygen stops aging

26.11.2020

Hyperbaric oxygen therapy is used for decompression sickness, carbon monoxide poisoning, injuries that led to severe blood loss, burns, and severe infections (although its effectiveness has not yet been confirmed in all cases). The essence of the procedure is that the patient is in a chamber (pressure chamber) with a pressure that is higher than normal atmospheric pressure. Under such conditions, the blood is better saturated with oxygen - it is carried not only by erythrocytes, but also to a large extent by blood plasma.

Researchers at Tel Aviv University have found that telomeres lengthen in human immune cells after hyperbaric oxygen therapy. So called end sections of chromosomes, in which no genetic information is encoded. Their job is to protect the rest of the chromosome from damage. Telomeres shorten over time, and the shorter it is, the greater the likelihood of various age-related anomalies. Therefore, they are called one of the indicators of aging.

On the other hand, cells have an enzyme that can lengthen telomeres, but this enzyme is usually inactive. Saturation of the blood with oxygen, apparently, somehow activates it. The experiments were carried out with 35 volunteers over 64 years of age - within three months they underwent 60 sessions of hyperbaric oxygen therapy. As a result, telomeres in immune blood cells lengthened by 20-38%. That is, oxygenation not only stopped aging, but also reversed it - at least in these cells.

In the blood, the proportion of aged cells decreased by 11-37%. We have already talked about such cells: despite all the aging processes, the program of cellular self-destruction does not turn on in them, as it should be in the norm. As a result, the cell, having grown old, continues to live and age even deeper, and at the same time it releases various substances that spoil the life of other cells. Animal experiments have shown that if the body is cleansed of aged cells, it prevents some age-related diseases and prolongs life.

A lot depends on our immune system. Perhaps with the help of hyperbaric oxygen therapy, which rejuvenates it, we will be able to do what we do with mice: delay age-related diseases and increase life expectancy. Although all the same, sooner or later it is necessary to find out the mechanism that links rejuvenation with an increased level of oxygen in the blood.

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High-strength steel for buildings and armored vehicles 19.11.2012

A research team at Wayne State University has developed the toughest bainitic steel with microstructures composed of ferrite and stabilized carbon austenite.

Despite significant progress in the creation of new grades of high-strength steel, various industries feel an urgent need for lighter and stronger structures. New metals should improve energy efficiency, reduce environmental pollution, improve transport safety, and so on.

American scientists have been working on the creation of new materials with high yield strength, high impact strength and ductility. As a result, it was possible to create a new material consisting of bainitic steel and ductile iron of isothermal hardening. The new material has all the desired characteristics, in particular, excellent resistance to fatigue wear, which can ultimately lead to unexpected collapses of structures and deaths.

The secret of the new metal lies in a special processing technique based on isothermal hardening with holding in the bainite region (austempering). This type of heat treatment is more energy efficient and does not require subsequent additional heat treatment, which saves energy. The new steel has extremely fine-scale microstructures consisting of ferrite and austenite, and also contains a large amount of silicon.

The new metal is made from traditional raw materials and can be processed in common ways. At the same time, it has excellent characteristics and can be used in a variety of areas. So, during ballistic tests in Canada, the new steel demonstrated excellent armor qualities in terms of protection against the effects of a blast wave and shrapnel. Thus, the strength and durability of the new steel allows it to be used for the manufacture of armored vehicles and strengthening buildings.

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