Sentences with phrase «nitrogen atom for»

Many members of the team had previously reported uranium nitride and oxo complexes where the molecules are essentially the same except for swapping a single nitrogen atom for an oxygen.

A nitrogen - vacancy center is an atomic - scale defect formed in the diamond lattice by substituting a nitrogen atom for a carbon atom and creating a neighboring void in the crystal lattice.

Not exact matches

If you watched an atom of carbon 14 undergo beta decay to an atom of nitrogen 14, what was the cause for that atom of nitrogen 14?

Two experimenters, the late Lord Rayleigh and the late Sir William Ramsay, found that if they obtained nitrogen by two different methods, each equally effective for that purpose, they always observed a persistent slight difference between the average weights of the atoms in the two cases.

There are basically two types of lines, those produced by collisions between the atoms or ions and the electrons in the surrounding gas, which are called collision lines, and which are very bright for elements such as oxygen, nitrogen and neon, and lines which are produced when ions capture free electrons, which are called recombination lines, and which are bright only for those gases with the highest abundances in the interstellar medium: hydrogen and helium.

For example, a few nitrogen atoms among a diamond's millions of carbon atoms can make the rock appear yellow or brown, while blue diamonds have been besmirched with a few boron atoms.

The distribution of nitrogen atoms after the dissociation allowed the identification of the «active sites» for this reaction, which are formed by the low - coordinated, top metal atoms of atomic steps.

The atomic size and structure of nitrogen make it an excellent choice for this purpose because it can fit naturally into a strong network of carbon atoms by creating bonds (sp2) in which electrons are shared by the whole network.

Graphene doped with nitrogen and augmented with cobalt atoms has proven to be an effective, durable catalyst for the production of hydrogen from water, according to scientists at Rice University.

Two nitrogen atoms combine to form N2 molecules that stay in the atmosphere for millions of years.

In parallel work, Mikhail Eremets of the Max Planck Institute for Chemistry in Germany found a novel bond between atoms of nitrogen, the most common element in Earth's atmosphere.

In a paper published online today (July 22) in the journal Science Advances, Terrones and colleagues revealed that adding nitrogen atoms to the pristine graphene further enhances sensitivity and, importantly, they gave a theoretical explanation for how graphene and N - doped graphene cause the enhancement.

On a yellow pad, Blackwell draws a portrait for me of a prototypical quorum - sensing signal molecule: a ring of carbon atoms attached to some hydrogen, nitrogen, and oxygen atoms, trailing off in a long tail composed of more carbon atoms.

These atoms include carbon, oxygen, nitrogen, and all the other elements that are essential for life as we know it.

The zinc atom is missing and a nitrogen atom (attached to a hydrogen atom) substitutes for the oxygen atom.

Haem, for example, consists of four pyrrole - type rings joined by carbon bridges to form a larger ring system called a macrocycle which consists of 20 carbon atoms and 4 nitrogen atoms.

Fixing nitrogen means breaking a tenacious triple bond that holds nitrogen atoms in pairs in the atmosphere and joining a single nitrogen to a molecule that is easier for living things to use.

BOND OF LIFE A link between nitrogen and sulfur atoms (bond shown in green) helps hold together protein strands (yellow and white) that create a cellular scaffold essential for tissue and organ formation.

Fischer tackled a problem that had stumped scientists for decades: how the oxygen, nitrogen, iron, and chlorine atoms in a hemin molecule are arranged.

The ensuing ability to achieve a controlled trade - off between emissive and photocatalytic behavior of CDs depending on nitrogen atom positioning inside the aromatic domain is expected to bring substantial improvements on their efficiency for on - demand light emission or energy conversion applications.

Taken together, these results suggest that there is a considerable structural nitrogen atom redundancy in plerixafor, not all amino groups are necessary for activity, and the consistence of the overall charge at physiological pH does not directly affect potency.

Nitrogen, in the form of nitric oxide (one nitrogen atom and one oxygen atom), has been detected for the first time on the surface of Mars by a team of researchers using the Sample Analysis at Mars (SAM) instrument suite aboard NASA's Curiosity rover, adding to the growing speculation that life could have once flourished on ancient Mars.

«The forces measured for nitrogen atoms are greater than for a carbon atom,» explains Dr. Shigeki Kawai, lead author of the study and former postdoc in Meyer's team.

For every 1 million atoms of hydrogen in the sun, there are 98,000 of helium, 850 of oxygen, 360 of carbon, 120 of neon, 110 of nitrogen, 40 of magnesium, 35 of iron and 35 of silicon.

It is also possible to replace some of the carbon atoms in the rings with other elements, for example, nitrogen.

However, after Anthony insisted that it could happen, I looked into the matter more deeply, and that was when I realized that the coding amino acid proline also has a carbon substitution for the hydrogen atom normally attached to the nitrogen atom, but has no trouble linking up with the other amino acids.

Nitrogen, for instance, would be represented by 2 identical balls, each standing in for an atom of — you guessed it — nitrogen.

For every 1 million atoms of hydrogen in the sun, there are 98,000 of helium, 850 of oxygen, 360 of carbon, 120 of neon, 110 of nitrogen, 40 of magnesium, 35 of iron and 35 of silicon.