Sentences with phrase «reactive molecules with»

That cooling leads to cloud formation inside the vortex and the ensuing chemical reactions that produce highly reactive molecules with unpaired electrons.

Antioxidants help neutralize free radicals, which are highly reactive molecules with unpaired electrons that can damage DNA, cells, and tissues in the body.

Not exact matches

In the end, Liu replaced the original system's problem catalysts — which made a microbe - killing, highly reactive type of oxygen molecule — with cobalt - phosphorus, which didn't bother the bacteria.

The damage sensors lit up first, with the hydrogen peroxide marker following moments later, suggesting that the reactive oxygen molecules are indeed a sign, and not a cause, of injury.

Clar tried to synthesize this molecule — called triangulene — in solution, but failed because it was so reactive it immediately bound up with other triangulene fragments.

What industrial chemists did know was that by tinkering with a highly reactive molecule called a phenol they were able to devise countless synthetic chemicals for use in new materials.

«You end up with individual molecules that are unstable and reactive, and they easily re-polymerize.

The researchers found that the ultracold molecules were relatively long - lived and stable, resisting reactive collisions with other molecules.

In their earlier work, the Colorado group observed a significant drawback of their ultracold potassium rubidium molecules: They were chemically reactive, and essentially came apart when they collided with other molecules.

DENVER — With the flip of a cellular switch, reactive molecules in air pollution can turn immune responses in the lungs topsy - turvy.

They found that soluble iron in the earliest oceans quickly combined with oxygen to form rust — forming reactive oxygen molecules, which damage biological tissue and make the cyananobacteria grow more slowly and produce less oxygen.

In addition, treatment with Korean red ginseng extract suppressed the expression of RSV - induced inflammatory genes and the formation of chemically reactive molecules containing oxygen, which play a role in virus - induced epithelial damage in RSV.

So far, the closest conventional synthesis has come to making molecules of this sort involves buffering the reactive edges with bulky hydrocarbon appendages2.

To produce triangulene, the team began with a precursor molecule called dihydrotriangulene, which lacks the reactive unpaired electrons.

By fencing off the reactive centre of B12 with lots of groups, the molecule keeps its high reactivity and specificity.

In a third study published online by Science on 6 April (www.sciencexpress.org), molecular geneticist Valter Longo of the University of Southern California in Los Angeles and colleagues battered a population of yeast mutants with heat or paraquat, a chemical that creates reactive oxygen molecules.

Ultraviolet radiation spices things up as well: It heats the grains and breaks up some of the molecules into reactive fragments, which in turn bond with other fragments to form new kinds of molecules.

More research produced the answer: Vitamin C induced what is known as a Fenton reaction, causing iron to react with other molecules to create reactive oxygen species that kill the TB bacteria.

In this case, they form naturally as ozone — a high - energy oxygen molecule — reacts with carbon chains that have double bonds, forming a compound that has two reactive pairs of electrons.

For example, in the case of the protein SIN3A, a regulator of gene transcription, the small molecule that covalently binds to its reactive lysine blocks the protein's function by disrupting SIN3A's interaction with another protein, TGIF1 — an interaction implicated in some invasive breast cancers.

In another experiment, a more direct test of druggability, the researchers used a library of small molecules — broadly representing potential drug molecules — to see which could compete with the probe in binding covalently to reactive lysines on human proteins.

Smaller subsets of T cells are reactive toward various nonpeptidic ligands associated with nonpolymorphic MHC class - Ib (MHC - Ib) molecules.

Typically, molecules like these are highly reactive with other chemicals, meaning they quickly break down in planetary atmospheres.

In reactive landing techniques, the ionized molecules hit the surface with more force than soft landing and react with the surface forming chemical bonds.

The prevailing theory is that this reduces damage to mitochondria occurring as a result of the reactive oxygen species generated within these organelles, with localized antioxidants soaking up reactive molecules before they can cause harm.

In the experiment, researchers coated the metallic particles with a layer of reactive molecules and focused the ALS - produced infrared light onto the tiny tip (25 nanometers in its diameter) of the atomic force microscope.

High Fructose Corn Syrup (HFCS): Loaded with «unbound» fructose and glucose molecules, studies have shown that the reactive carbonyl molecules can cause tissue damage that may lead to obesity, diabetes, and also heart disease.

Free radicals like reactive oxygen and nitrogen species (ROS, RNS) are molecules missing an electron, making them highly unstable and capable of destructive interactions with lipids, DNA, and proteins.

Previous research has also shown that short - term fasting can produce molecules called free radicals, which are highly reactive chemicals that can cause damage to the body at a cellular and may be associated with impaired organ function, cancer risk and accelerated aging.

Free radicals are molecules with incomplete electron shells which make them more chemically reactive than those with complete electron shells.

Energy metabolism and the production of Reactive Oxygen Species (very small molecules that can result in significant damage to cell structures, of which include oxygen ions, free radicals and peroxides) are thought to underpin many nuerodegenerative disorders, and creatine is thought to enhance the brains ability to survive the metabolic and physical trauma associated with these conditions.

Free radicals are highly reactive molecules and when they come into contact with healthy cell membranes, they cause damage to the membrane and may ultimately cause the cell to die.

Fructose is a reactive molecule that binds with proteins in the body to form Advanced Glycation End Products (AGEs).

These oxygen atoms are very reactive and tend to combine with any atoms or molecules with which they collide.