Using magnets to help prevent heart attacks
June 7, 2011If a person's blood becomes too thick it can damage blood vessels and increase the risk of heart attacks. But a Temple University physicist has discovered that he can thin the human blood by subjecting it to a magnetic field.
Rongjia Tao, professor and chair of physics at Temple University, has pioneered the use of electric or magnetic fields to decrease the viscosity of oil in engines and pipelines. Now, he is using the same magnetic fields to thin human blood in the circulation system.
Because red blood cells contain iron, Tao has been able to reduce a person's blood viscosity by 20-30 percent by subjecting it to a magnetic field of 1.3 Telsa (about the same as an MRI) for about one minute.
Tao and his collaborator tested numerous blood samples in a Temple lab and found that the magnetic field polarizes the red blood cells causing them to link together in short chains, streamlining the movement of the blood. Because these chains are larger than the single blood cells, they flow down the center, reducing the friction against the walls of the blood vessels. The combined effects reduce the viscosity of the blood, helping it to flow more freely.
When the magnetic field was taken away, the blood's original viscosity state slowly returned, but over a period of several hours.
"By selecting a suitable magnetic field strength and pulse duration, we will be able to control the size of the aggregated red-cell chains, hence to control the blood's viscosity," said Tao. "This method of magneto-rheology provides an effective way to control the blood viscosity within a selected range."
Read More...http://www.physorg.com/news/2011-06-magnets-heart.html
Interesting... I wonder if I could make one of those???
Don
Neodymium Magnets
What is neodymium magnet?The neodymium magnet is majorly composed of 3 elements, i.e. neodymium, iron and boron. So the neodymium magnet is also called NdFeB magnet. Another name of the neodymium magnet is rare earth magnet, which was used to referring to the SmCo magnet but today is majorly used for neodymium magnet since the neodymium magnet becomes more and more popular today. Among the 3 elements, neodymium is the rare earth element.
The neodymium magnets can be made sintered or bonded. The sintered magnet is normally stronger than bonded since the latter conatains rubber or plastic as bonding material. The neodymium magnet is about 8 times stronger than the ceramic magnet but has a lower working temperature. By default, all the sintered neodymium magnets have a working temperature of 80 degree celsius or 176 Fahrenheit.
Go there...
http://www.magnet4sale.com/neodymium-ndfeb-rare-earth-magnets/
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