Sentences with phrase «iron ions»

It could be related to any intake of polyunsaturated fats that you have ingested yourself or free copper or iron ions in your water.

Electricity is stored in the system by seeding iron ions with excess electrons.

Unperturbed, the researchers tried adding a small quantity of iron ions to the purple solution.

Artemisinin has a chemical structure called a peroxide bridge, which can be cleaved by iron ions to form free radicals that attack a range of proteins and other biomolecules; some researchers suspected that such an attack would be fatal for the parasites.

David Leigh at the University of Edinburgh, UK, and colleagues wove the pentafoil using «needles» made of positively charged iron ions attached to long, skinny organic - molecule «threads».

Anderson says they can not because the older materials evolve from a state with one electron per copper ion, whereas new materials evolve from a state with two electrons per iron ion.

The remote - sensing Imaging Ultraviolet Spectrograph (IUVS) designed and built at CU - Boulder observed intense ultraviolet emissions from magnesium and iron ions high in the atmosphere in the aftermath of the meteor shower.

One particular feature of bismuth ferrite is that in bulk samples, spins of Fe3 + iron ions are arranged in the form of a cycloid.

In reality, though, the reaction is slow, inefficient and requires large quantities of both hydrogen peroxide and ferrous (Fe2 +, a divalent iron ion) salt — which serves as a catalyst.

As a result, the bacteria produced carbondioxid, which in turn precipitated iron ions present in the lake water.

Next, he laid an iron rod across it in three places, each time running a charge through the rod to release iron ions onto the hydrogel's surface.

Dissolved hydrogen sulphide, H2S (aq), then penetrates the wood, where it is transformed into solid reduced sulphur compounds, such as thiols, R - SH (R denotes an organic part), in the lignin of the wood and to iron (II) sulphides when iron ions are available.

If sour or rancid - smelling milk is an issue for you, you may be able to prevent this change by avoiding free copper or iron ions in your water and polyunsaturated fats in your diet.

The company is planning to fit an iron ion battery at a local vineyard to help the growers balance their energy more effectively and get more out of their solar panels and wind turbines.

They found that the types sorted themselves remarkably well in combination with iron ions: The longer strands assembled into cross-shaped groups of four, the shorter strands into star - shaped groups of five.

Researchers can use those iron ions in the solar material to trace temperature: The hotter the solar plasma, the more electrons the iron has lost.

As the battery is discharged, lithium ions (shown in purple) jump across the coating and insert themselves into the crystal structure, while electrons (shown as circles with minus signs) in the carbon - coating tunnel into the material and attach to iron ions (shown in red).

Iron ions were employed as «the oxidative initiator to make pyrrole monomers polymerized on the [bacterium's] surface.»

Lee explains: At an acid pH, only one side chain on the dopamine molecules attaches to the iron ions.

A hydrogel treated with dopamine and iron ions is flat under neutral conditions (top photo) and bends in an alkaline state.

In the presence of iron ions, the threat of acid becomes particularly acute, because iron ions catalyse the oxidation processes and amplify the production of sulphuric acid.

The Imaging Ultraviolet Spectrometer was able to observe intense emissions from magnesium and iron ions in the atmosphere in the aftermath of the comet encounter.