Sentences with phrase «hydrogen molecule bound»

Instead of a hydrophilic alcohol group (an oxygen - hydrogen molecule bound to a hydrogen - saturated carbon atom), the final lignin polymer contained a hydrophobic aldehyde group (a carbon atom double - bonded to an oxygen atom).

Not exact matches

The hydrogen - bearing material is volatile (easily vaporized), and may be in the form of water molecules (two hydrogen atoms bound to an oxygen atom) or hydroxyl molecules (an oxygen bound to a hydrogen) that are loosely bound to the lunar surface.

BY AFFECTING the way molecules bind to each other, hydrogen bonds are responsible for water's high boiling point, ice's propensity to float and DNA's signature double helix.

And maps of slow - moving neutrons collected by NASA's Lunar Prospector, which orbited the moon in 1998 and 1999, suggested a number of craters are rich in hydrogen, though it was not clear whether the hydrogen was bound in water molecules or was present in some other form.

After extensive testing, the team found that the hydrogen binding energy (the amount of energy released when a hydrogen molecule adheres to a metal surface) was the most important factor predicting the rate of the reaction — information essential to researchers designing new catalyst materials.

«Sodium ions are much smaller than the hydrogen protons bound to oxygen molecules in the water in our bodies which are mapped by conventional MRI.

It demonstrates how carbon monoxide (CO) while it is binding to a hydrogen molecule, dislocates a sulfur atom.

For each type of biofuel, nearly all the fuel was converted and about 70 percent of the hydrogen bound up in the fuel molecules was given off as gas, the researchers report in this week's Science.

An atmospheric water molecule can be broken apart by sunlight, releasing the two hydrogen atoms from the oxygen atom that they had been bound to.

In the experiment, plastic simulates compounds formed from methane — a molecule with just one carbon bound to four hydrogen atoms that causes the distinct blue cast of Neptune.

When a methyl group (a carbon atom with three hydrogen atoms attached) binds to a cytosine molecule (one of the four nucleotides that make up DNA), it tells the cell's transcription machinery not to transcribe that gene.

Seeing hydrogen is critical to studying protonation states of an enzyme and ligand — a molecule that binds to a biological macromolecule — and to analyzing the architecture of hydrogen - bonding networks.

When water (H2O) freezes into ice, the molecules are bound together in a crystalline lattice held together by hydrogen bonds.

In an experiment conducted at the Linac Coherent Light Source, the team studied plastic simulating compounds formed from methane — a molecule with just one carbon bound to four hydrogen atoms that causes the distinct blue cast of Neptune.

For hydrogen in Earth's early history to have arrived and stayed put in great enough amounts to bond with the oxygen in Earth's atmosphere, it must have been attached to a «carrier» — another atom that bound it into a molecule.

Meanwhile, Christner says, unraveling the chemistry of ice - binding proteins (which tend to form a hydrogen bond with water molecules) could have important biotech applications.