Sentences with phrase «of magnetite»

Pigeons are thought to rely on bits of magnetite in their beaks.

Electron micrographs of tiny superparamagnetic crystals of magnetite at different resolutions.

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

They discerned a u-shaped chain of magnetite within a fluid - filled sac resembling a vacuole of a cell.

Formosa fully funded the $ US340 million first stage of the project, which delivered a pilot plant capable of producing 1.5 million tonnes of magnetite concentrate in 2015.

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

And the presence of magnetite in birds» beaks had led some researchers to believe that this structure was key to birds» homing abilities.

Right: (A) Hologram of a magnetite nanocrystal chain released from a magnetotactic bacterium, and (B) corresponding magnetic induction map.

The majority of this magnetite forms in geologic processes, where many elements mix together and iron often gets replaced with iron - like elements such as magnesium and chromium.

PERTH - based Mineralogy Pty Ltd has entered into an agreement with Austeel Pty Ltd to provide access to 740 million tonnes of magnetite ore on attractive commercial terms.

Palabora also owns a magnetite stockpile and the future of value creation at Palabora is likely to involve beneficiation of the magnetite through on - site processing, an activity that is outside Rio Tinto's strategic focus.

But in order for today's magnetic intensity readings of the magnetite to reveal the actual conditions of that era, the researchers needed to make sure the magnetite within the zircon remained pristine from the time of formation.

When one mobilized platinum atom finds another, they can form a bond — as long as both of them are being lifted up by carbon monoxide, diminishing the influence of the magnetite below.

The lifting process frees the atom from the tight grip of the magnetite, and together, the molecule and the platinum atom can start moving around randomly across the magnetite surface.

You're looking at the Tilden Mine, which produces 8 million tons of hematite and magnetite annually, and the Empire Mine, which produces 5.5 million tons of magnetite each year.

Further south, concentrations of magnetite give the Empire Mine tailings pond its bluish appearance.

The researchers suggest that the orientation of the magnetite crystals causes them to attract or repel, depending on whether they are positioned side by side or end to end.

They identified rings of magnetite (iron oxide) arranged around the sooty spheres in the same pattern as in frocks from a volcano on the island of Svalbard, Norway.

«Electron holography has made it possible for us to gain a completely new insight into the magnetic behaviour of magnetite,» emphasized Prof. Rafal Dunin - Borkowski, Director at the ER - C and at the Peter Grünberg Institute in Jülich.

This micromagnetic model shows the three - dimensional vortex structure of magnetite nanocrystals.

An international research team has now studied this question for the first time at ultra-high resolution on samples of magnetite, the mineral dominating the magnetic properties in the earth's crust.

One possible explanation for this is that animals can also perceive the magnetic field in a different way: for example, with the help of magnetite, microscopic ferrous particles in cells.

Chen and Ma explained that the high temperature and pressure under which the crystals form made tiny meteorite - like «micro-particles» of magnetite escape from their surface.

When the scientists examined the cells in the growing communities closely, they found nanoparticles of magnetite on the surface of cells and, in some cases, grains of the iron mineral connecting microbial pairs.

Other studies have even found minuscule amounts of magnetite in the human brain, but recent research suggests most of it comes from air pollution rather than occurring naturally, and it's unclear whether they give humans a subconscious magnetic sense.

«The size and purity of the magnetite is controlled by the organism to be the best magnet it could be,» Thomas - Keprta says.

So - called magnetotactic bacteria create a chain of magnetite grains to help orient themselves in their search for nutrients.

Thomas - Keprta also identified tiny crystals of magnetite overlapping the globules.

The study's researchers found high levels of magnetite in tissue from the brains of 37 people who had lived in two polluted urban areas — Mexico City and Manchester.

Coal Washing: The treatment of coal to remove waste material such as: Dense (heavy) medium processes use a thick solution, usually a mixture of magnetite and water, to separate coal from impurities, such as sulfur, ash, and mercury, by gravity separation.

One of its subsidiaries, Reiss Viking, now owned by Quality Magnetite, LLC, is one of the largest suppliers of magnetite for the coal industry.

Nesson and his colleagues used a highly sensitive magnetometer to show that even the sterile media which are used to nourish cultured cells contain tiny particles of magnetite.

In fact, the only thing slowing the microbes down in the presence of magnetite was their own ability to grow.

Using a high - resolution transmission electron microscope, they have discovered crystals of magnetite no more than 10 nanometres across at the core of some of those granules.

They think the skill may be related to small particles of magnetite, an iron oxide, located in two masses of nerve tissue in the forward part of the lobsters» bodies.

First, the surface charge on a particle of magnetite (a form of iron oxide) depends on the pH of the solution surrounding it: below pH 6 it is positive, and above it is negative.

These might be based on crystals of magnetite, which align with the Earth's magnetic field and could pull on some kind of stretch receptor or hair - like cell as it changes polarity.

A form of magnetite (iron oxide) was detected in the meteorite that, on Earth, is produced only within the bodies of certain bacteria.