Sentences with phrase «chemical bonds between»

The scientists began by building a database of 1,500 odor - producing molecules, cataloging 1,664 different traits — their size, the strength of the chemical bonds between their atoms, and so on.

The chemical bonds between carbon and nitrogen which link together amino acids to form proteins pose a classic chicken - and - egg dilemma for biologists studying the origin of life.

Such interactions are dependent on chemical bonds between hydrogen atoms.

But since the chemical bonds between the propellers are quite weak, just a tiny bit of thermal energy knocks the blades apart and they spin to another position.

It turned out that the negative compressibility of sodium amidoborane crystals has to be a consequence of the elongation of the chemical bonds between nitrogen and hydrogen and boron and nitrogen, caused by the abrupt formation of new hydrogen bonds between adjacent molecules in the crystal.

But if the temperature is raised above the plasticity threshold, then the TBD kicks in by creating chemical bonds between the polymer chains.

At altitudes above 50 kilometers, ultraviolet light from the sun easily penetrates the Red Planet's thin atmosphere and breaks down water's chemical bonds between hydrogen and oxygen.

Physicists have long known that chemical bonds between atoms are flexible — like springs connecting spheres.

For the acid dyes to color the eggshell (or silk fibers in the tie), they must undergo a chemical reaction that forms a chemical bond between the dye and the eggshell proteins (or silk fibers in the tie).

Opening the sugar destabilizes the otherwise highly stable chemical bond between the oxidized nucleotide base and the DNA strand, and the bond is then broken in further steps.

Meyer, based at Grove City in Ohio, says that these electrically polarised conditions strain and break the covalent chemical bond between hydrogen and oxygen, liberating the two gases.

The chemical bond between iron and oxygen is what gives blood cells their red colour.

Indiana University researchers have reported the first definitive evidence for a chemical bond between two negatively charged molecules of bisulfate, or HSO4, a new molecular structure with potential applications to the safe storage of nuclear waste and reduction of chemicals that contaminate water and trigger large fish kills.

Using the same technique, a few years later they succeeded in distinguishing different types of chemical bond between carbon atoms in a hydrocarbon molecule.

«Nature of the chemical bond between metal atoms and oxide surfaces: new evidence from spin density studies of K atoms on alkaline earth oxides» Journal of the American Chemical Society 2005, 127, 16935 - 16944.

Not exact matches

And then, go home with the thought that because this love is a chemical construct of some sort (as thoughts involve chemistry) that this bond between you and your loved ones is as meaningless and hollow in the whole scheme of things as is the statement of a chemical equation.

The chemical has always been credited for deepening feelings love and social bonding, but the new study appears to be the first that finds any connection between oxytocin and a sense of spirituality.

Hammer says the vesicles could be made even stronger by using chemicals to forge bonds between the polymer molecules.

When the team applied the technique to a sample of the organic molecule PTCDA, not only did the molecules show up in intricate detail, an electrical signal was also detected between them (coloured green below), at exactly the locations where hydrogen bonds are present (Journal of the American Chemical Society, DOI: 10.1021 / ja104332t).

Dynein switches between these different conformations as a result of the conversion of a molecule of ATP to ADP at a specific binding site on the protein, which releases energy as a chemical bond is broken.

To remedy this, Bode discovered a new chemical reaction that creates amide bonds (a reaction between alpha - keto acid and hydroxylamine), which he uses to connect small, easily synthesized peptides — strands of amino acids — into longer peptides.

A collaboration between researchers from KEK, the Institute for Basic Science (IBS), the Korea Advanced Institute of Science and Technology (KAIST), RIKEN, and the Japan Synchrotron Radiation Research Institute (JASRI) used the SACLA X-ray free electron laser (XFEL) facility for a real time visualization of the birth of a molecule that occurs via photo - induced formation of a chemical bonds.

In a hair strand, the keratin molecules are mainly held together by two forces: chemical cross-links between cysteines (a type of amino acid) and weaker hydrogen bonds.

Analysis of phase - change materials showed that they work because of a particular kind of chemical bonding, called resonant bonding — a type of bond in which electrons flip back and forth between several adjacent atoms.

The chemical feature that enables this suppression is a bond between two oxygen atoms — an unstable peroxide bridge that releases a tiny barrage in the form of free radicals (unpaired electrons) that can fracture parasite proteins the way an F5 twister tears apart barns.

The most detailed images yet made of the chemical bonds in a molecule show what large - scale models had long assumed: the more electrons that two atoms share, the shorter the bond between them.

This strobing of the transition - state region between reagents and products provides real time observations that are fundamental to understanding the dynamics of the chemical bond.

«There is no chemical bonding or reaction between a pressure - sensitive adhesive and the substrate, the surface to which it bonds.

A peptide bond is a chemical bond formed between two molecules when the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water (H2O).

The method is also highly enantio - and regioselective, meaning that researchers could control the precise geometry and position at which the new chemical bond is formed between the two coupling partners, attractive features that have not been offered by previous methods.

The tweezer is so precise it's been used to determine how strong the chemical bonds are between two protein molecules in a cell.

If the change in chemical bond energy is high enough, the spin transition may trigger iron redistribution between coexisting minerals.

The resulting image was so clear that the scientists could study their chemical nature based on the minute differences between individual bonds.

Through computer analysis they were able to modify the chemical makeup of the compounds and find the precise formulation for creating the strongest bond between the compound and the kappa opioid receptor without affecting any other receptors in the cell.

chemical bonds Attractive forces between atoms that are strong enough to make the linked elements function as a single unit.

● There is a lot of energy stored in the bond between the second and third phosphate groups that can be used to fuel chemical reactions.

The bond that occurs between the second and third type of phosphates is that a great deal of energy is stored, and this can be used to trigger chemical reactions.

She also skillfully distinguishes between the bonding and attachment that oxytocin promote and the sexual or romantic love linked to other brain chemicals.

True love — Driven by chemicals called nonapeptides, this stage ensures a deep bond between you and your partner — nature's way of keeping you together to take care of your kids until they're grown up, Nour said.