Sentences with phrase «reactive compounds»

It is the molecules surrounding the metal that determine how reactive the compound is.

The elements then form ozone, nitrogen oxide and other reactive compounds that can kill off bacteria and cancer cells.

Antioxidants are widely believed to protect cells by sopping up highly reactive compounds known as free radicals before they have a chance to react and tear apart DNA or other vital cellular components.

RADICAL THEORY Changes in the concentration of a highly reactive compound in the atmosphere called hydroxyl may be to blame for a rise in global methane levels since 2007, new research suggests.

Ionizing radiation damages cells by producing very reactive compounds known as free radicals.

Free radicals are highly reactive compounds produced in response to normal metabolic functions as well as in response to air pollutants, tobacco smoke, sunlight, damaged fats, noise, chemical exposure and other environmental stressors.

Johnson, along with study co-author and post-doctoral researcher Jingyun Ye at the University of Pittsburgh, examined a series of eight different functional groups of Lewis acid and base pairs (Lewis pairs for short), which are highly reactive compounds often used as catalysts.

Volcanic plumes were ideal crucibles for sparking stable nitrogen to form reactive compounds that led to the first organic molecules, chemists report in the 15 August Geophysical Research Letters.

At the surface of polar stratospheric clouds, chemical reactions take place, converting passive chlorine compounds into reactive compounds that trigger stratospheric ozone depletion.

In NHLF cells transfected with siRNA against Nrf2 and subsequently treated with either the thiol - reactive compounds CDDO - Me or HPP - 1014; or the non-reactive compounds CoPP or HPP - 4382, there was a marked reduction in HMOX1 expression.

Therefore, OH reactivity measurements reveal how much of reactive compounds are present in the air.

Antioxidants perform the role of eliminating free radicals, which are reactive compounds in the body.

One possibility for how that happens, says Hekimi, is that slow cellular metabolism delays the normal buildup of metabolic byproducts, such as reactive compounds known as free radicals, that are toxic to cells.

In this case, he was testing the idea that a buildup of cellular damage caused by oxidation — technically, the chemical removal of electrons from a molecule by highly reactive compounds, such as free radicals — is the main mechanism behind aging.

But he cautions that follow - up studies are needed to prove whether the antibodies are really burning water to generate the reactive compounds.

Like Earth's atmosphere, Titan's is largely nitrogen plus one more - reactive compound and some trace gases (see diagram).

Oddly, the antibodies kept generating a reactive compound, hydrogen peroxide.

Antioxidants in foods, including vitamins A, C and E, polyphenols and certain minerals, such as selenium boost immune function by quenching free radicals, highly - reactive compounds that are formed as byproducts of normal processes in the body or enter the body from the environment, according to Penn State University.

These reactive compounds cause the harmful oxidation of other molecules within your cells — they damage your proteins and cell membranes and mutate your DNA.