News tagged with manganese
Manganese concentrations higher in residential neighborhoods than industrial sites, varies by region
In residential neighborhoods near manufacturing industries, a breath of air may be more hazardous than refreshing depending on the location, finds a recent study involving a Kansas State University geologist.
Mar 07, 2012 |
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Researchers resolve controversy over gallium manganese arsenide that could boost spintronic performance
A long-standing controversy regarding the semiconductor gallium manganese arsenide, one of the most promising materials for spintronic technology, looks to have been resolved. Researchers with the Lawrence ...
Feb 27, 2012 |
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Saving data in vortex structures: New physical phenomenon could drastically reduce computer energy consumption
A new phenomenon might make computing devices faster, smaller and much more energy-efficient. Moving so-called skyrmions needs 100,000 times smaller currents than existing technologies and the number of atoms ...
Feb 21, 2012 |
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Understanding how bacteria come back from the dead
Salmonella remains a serious cause of food poisoning in the UK and throughout the EU, in part due to its ability to thrive and quickly adapt to the different environments in which it can grow. New research involving a team ...
Feb 02, 2012 |
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Metal shortages alert from leading geologists
Geologists are warning of shortages and bottlenecks of some metals due to an insatiable demand for consumer products.
Space & Earth / Earth Sciences
Oct 12, 2011 |
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Israeli wins chemistry Nobel for quasicrystals (Update 3)
Israeli scientist Dan Shechtman was awarded the Nobel Prize in chemistry on Wednesday for a discovery that faced skepticism and mockery, even prompting his expulsion from his U.S. research team, before it ...
Oct 05, 2011 |
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China to appeal WTO ruling over rare earth exports
China, under pressure to relax controls over rare earths, said Wednesday it would appeal against a World Trade Organisation ruling that it illegally restricted exports of other key raw materials.
Aug 24, 2011 |
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Cooling down global warming
(PhysOrg.com) -- Carbon capture has long been identified as a critical technology needed to prevent global warming, but efficient and economical ways to do it have been hard to find.
Aug 16, 2011 |
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A manganite changes its stripes
If there were a Hall of Fame for materials, manganites would be among its members. Some manganites, compounds of manganese oxides, are renowned for colossal magnetoresistance – the ability to suddenly ...
Jul 15, 2011 |
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Structural origin of 'hidden state' in manganite thin film revealed by picosecond time-resolved X-ray diffraction
Photo-induced phase transition (PIPT) has caused great excitement in materials science because ultra-fast alteration of the magnetic, dielectric, structural and optical properties of materials can be brought ...
Jul 14, 2011 |
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At small scales, tug-of-war between electrons can lead to magnetism under surprising circumstances
(PhysOrg.com) -- At the smallest scales, magnetism may not work quite the way scientists expected, according to a recent paper in Physical Review Letters by Rafal Oszwaldowski and Igor Zutic of the Univer ...
Jun 29, 2011 |
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The heat is on for sodium-manganese oxide rechargeable batteries
(PhysOrg.com) -- By adding the right amount of heat, researchers have developed a method that improves the electrical capacity and recharging lifetime of sodium ion rechargeable batteries, which could be a ...
Nanotechnology / Nanomaterials
Jun 07, 2011 |
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Scientists demonstrate novel ionic liquid batteries
(PhysOrg.com) -- Scientists at the NRL Materials Science and Technology Division are providing solid evidence that there is a new route towards developing novel, lightweight energy storage devices. By moving ...
Apr 15, 2011 |
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Novel energy-band model for semiconducting spintronics material gallium manganese arsenide
(PhysOrg.com) -- The Fermi level position and band structure of gallium manganese arsenide has been determined for the first time, shedding light on the precise mechanism behind ferromagnetism in the material. ...
Mar 29, 2011 |
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Manganese in our water is detrimental to cognitive development
Manganese is a chemical element naturally found in water, which can lead to various health, behavioral and intellectual development problems in children, according to a study by Maryse Bouchard published in ...
Feb 08, 2011 |
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Manganese
Manganese ( /ˈmæŋɡəniːz/ mang-gə-neez) is a chemical element, designated by the symbol Mn. It has the atomic number 25. It is found as a free element in nature (often in combination with iron), and in many minerals. As a free element, manganese is a metal with important industrial metal alloy uses, particularly in stainless steels.
Manganese phosphating is used as a treatment for rust and corrosion prevention on steel. Depending on their oxidation state, manganese ions have various colors and are used industrially as pigments. The permanganates of alkali and alkaline earth metals are powerful oxidizers. Manganese dioxide is used as the cathode (electron acceptor) material in standard and alkaline disposable dry cells and batteries.
Manganese(II) ions function as cofactors for a number of enzymes in higher organisms, where they are essential in detoxification of superoxide free radicals. The element is a required trace mineral for all known living organisms. In larger amounts, and apparently with far greater activity by inhalation, manganese can cause a poisoning syndrome in mammals, with neurological damage which is sometimes irreversible.
For more information about Manganese, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
