Sentences with phrase «contain magnetite»

In other species, including humans and homing pigeons, these cells have always been found to contain magnetite, a form of iron oxide.

Not exact matches

The fluid proposed by Ji - Ping Huang of Fudan University in Shanghai, China, and colleagues, contains tiny magnetite balls coated with a layer of silver, possibly with an additional polymer coating to keep them from clumping.

Magnetospirillum cells contain a number of small particles of magnetite (Fe3O4), each approx. 45 nanometers wide.

Another navigational tool: birds» beaks, which contain bits of magnetite, a mineral that may allow them to sense Earth's magnetic field.

The researchers engineered nanoparticle complexes containing small amounts of ropivacaine and the iron oxide mineral magnetite.

Researchers have long known that migratory birds receive information about magnetic fields from a part of their upper beak called the magnetite receptor, which contains iron - based magnetic crystals.

«I know of no biogenic mechanism for growing whiskers, and I don't know of any biogenic magnetite that contains screw dislocations,» agrees Peter Buseck, a geochemist at Arizona State University in Tempe.

But locating the cells that contain the 50 - nanometer particles has been like looking for a needle in a haystack, in part because the tissue - dissolving methods used to identify magnetite turn biological samples to mush.

He and Kent used a bandsaw to trim the samples into sugar cube - size blocks and inserted them into a magnetometer, which measured the polarity of tiny grains of the minerals hematite and magnetite contained in the sediment.

The findings are consistent with the idea, first proposed nearly 40 years ago, that animals have tiny magnetic particles of an iron - containing compound called magnetite in their bodies.