Biomagnetics developed for use in new breast cancer tests from PhysOrg.com
A team from UCL has developed a new medical device which will make the early detection of breast cancer more cost effective and easier to administer. The team - which won a prestigious Brian Mercer Feasibility Award from the Royal Society yesterday - plans to use magnetic nanoparticles and an extremely sensitive magnetometer called the ‘HistoMag’ to detect cancerous cells in samples of breast tissue.
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Presenetljivo odkritje: s kemijskim procesom je mogoče doseči, da imajo nanometrski delci zlata, srebra in bakra, ki so sicer neferomagnetiki, feromagnetne lastnosti. Lahko delujejo kot trajni magneti. To postavlja pod vprašaj celotno teorijo feromagnetizma ....
SLIKA: iz strani ScienceDaily(http://www.sciencedaily.com/releases/2008/02/080228100724.htm)Pustimo se presenečati!
Zgodba:
Magnetic atoms of gold, silver and copper have been obtained from PhysOrg.com
An international team led by Physics and Chemistry teams from the Faculty of Science and Technology at the University of the Basque Country (UPV/EHU) and directed by Professor Jose Javier Saiz Garitaonandia, has achieved, by means of a controlled chemical process, that atoms of gold, silver and copper - intrinsically non-magnetic (not attracted to a magnet) - become magnetic. The article has been published in the February issue of Nanoletters (Vol.8, No. 2, 661-667 (2008)).
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D
AHLGREN, Va. — A futuristic weapon getting a trial run by the Navy demonstrated its destructive power at the Naval Surface Warfare Center in Dahlgren.
In the demonstration Thursday, engineers fired the electromagnetic railgun at what they said was a record power level: 10 megajoules.
The previous railgun power-use record was about 9 megajoules of muzzle energy.
• Click here to watch video of a railgun being fired.
Railguns use electromagnetic energy to launch projectiles long distances — more than 200 nautical miles.
Because the railgun uses electricity and not gunpowder to fire projectiles, it eliminates the possibility of explosions on ships.
The Navy hopes the railgun will eventually replace the standard 5-inch gun on its ships. The weapon isn't expected to be deployed until at least 2020.
[A joule is defined as the energy needed to produce one watt of electricity for one second.
The railgun tested Thursday actually has a capacity of 32 megajoules, but the Navy is slowly building up the energy level in a series of tests.