Technique, industry, architecture - Disasters at sea. Crosswordist's Handbook

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Engineering, industry, architecture / Transport and communications / Disasters at sea

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VENOIL and VENPET - tankers, the largest collision off the coast of South Africa, 1977

(7)

TITANIC - sank due to a collision with an iceberg in April 1912.

MONT BLANC - cargo ship, collision and explosion, prol. Halifax, Canada, 1917, many casualties

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Toxic substances from polluted air enter the brain 22.09.2016

In May of this year, the World Health Organization published a report stating that between 2008 and 2013. the level of air pollution with fine particles of sulfate, nitrate and black carbon increased by 8%. These particles penetrate deeply into the lungs and cardiovascular system of a person and cause damage to health.

A new study by British scientists from the University of Lancaster has shown that particles from the air also enter the brain. The researchers analyzed brain tissue samples from 29 people who lived and died in Mexico City, one of the most polluted cities in the world, and 8 people who lived and died in Manchester, and found in the samples magnetite nanospheres - a mineral from the class of oxides - with a diameter of 200 nanometers. Magnetite particles can form naturally in the brain in small amounts, but they are usually irregular in shape with sharp corners.

The particles, discovered by scientists, differed from natural ones. There were more of them, and they were round in shape with a smooth surface, which is a sign of their origin in high temperature conditions - for example, in a car engine or in a braking system. In addition, crystal grains were located on their surface, which appeared as a result of the reaction with platinum in the catalytic converter. For every natural particle of magnetite in the brain, there were about 100 particles from polluted air.

Scientists suggest that iron oxide, when accumulated in the brain, may contribute to the development of neurodegenerative diseases, since similar particles were previously found in amyloid plaques in the brain that appear in Alzheimer's disease. However, there is no direct link yet, and further research is required regarding the need for brainwashing to get rid of magnetite. Moreover, to prevent Alzheimer's disease, you can start with a healthy diet and an active lifestyle, as well as quit smoking.

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