Sentences with phrase «highly reactive oxygen»

The hydrogen was lost to space leaving highly reactive oxygen to combust reduced carbon (C and CH4) and sulphur (inc sulphide) to acid gases as well as oxidise near surface elemental or ferrous iron to ferric (red) iron.

The functional disruption leads to oxidative stress inside the cell; an accumulation of highly reactive oxygen compounds takes place and a large number of the cell's molecules are damaged.

Exposing body tissues to highly reactive oxygen molecules can damage proteins, lipids, and DNA, hastening aging and cell death.

Geologist Martin Kennedy and his colleagues from the University of California, Riverside realized that clay minerals in marine sediments are responsible for trapping the organic carbon that would otherwise bond with highly reactive oxygen.

This fact makes vacuum UV light extremely useful for industrial applications from sterilizing medical devices to cleaning semiconductor substrates because when it strikes oxygen - containing molecules on a surface, it generates highly reactive oxygen radicals, which can completely destroy any microbes contaminating that surface.

The cause of the damage is still poorly understood, but radiation is known to create highly reactive oxygen - containing molecules in the body.

It has been theorized that the major cause of bleaching is the result of chloroplast damage due to heat stress, which results in the production of toxic, highly reactive oxygen molecules during photosynthesis.

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.

When potent oxygen radical scavengers such as cerium oxide nanoparticles (nanoceria) were combined with a highly charged polymer (polyacrylic acid) and incorporated into extracted chloroplasts using the LEEP process, damage to the chloroplasts from superoxides and other reactive oxygen species was dramatically reduced.

One such oxygen - removing agent is rocket fuel, scientists from Rutgers University found specifically, vapors of hydrazine, a highly reactive and toxic compound.

In a new cell culture study, Sen found that sucralose appears to promote oxygen radical accumulation — a highly reactive particles that can cause disease and inflammation inside cells.

The team — which also included scientists from France (CNRS Marseille), Denmark (University of Copenhagen) and the UK (University of Cambridge)-- undertook a detailed investigation of a new class of LPMO enzymes use oxygen from the air to initiate a highly reactive oxidation process that allows a resistant form of starch to be broken down.

The highly reactive radical, Cl •, then abstracts a hydrogen atom of CH4 to give methyl radicals, CH3 •, which in turn react with oxygen to produce valuable methanol and formic acid.

These schematic drawings show how researchers applied laser pulses to HCN channels tagged with a fluorescent photosensitizer to observe the effects on these channels of singlet oxygen, a highly reactive form of oxygen that plays a role in a range of biological processes including photosynthesis and skin cancer / aging.

Oxygen atoms are highly reactive, yet the world does not spontaneously burn, even though everything is surrounded by this aggressive element.

The surprise to biochemists was that the enzyme, called FtmOx1, produces a highly reactive «helper» known as a free radical that assists in putting the oxygen atoms in the right place.

«Without a membrane, the photoanode and photocathode are close enough to each other to conduct electricity, and if you also have bubbles of highly reactive hydrogen and oxygen gases being produced in the same place at the same time, that is a recipe for disaster,» Lewis says.

Sunlight and toxins do much of the damage, but the biggest culprit may be highly reactive byproducts created as cells use oxygen to turn sugar into energy.

That light is absorbed by the chlorine - based molecules, which then excite nearby oxygen molecules, creating a highly reactive form of oxygen, known as singlet oxygen, that rips apart nearby biomolecules and kills the tumor cell.

When academic allergist Sanjiv Sur at the University of Texas in Galveston and colleagues exposed mice to ragweed pollen, they noticed the animals produced highly - reactive forms of oxygen in their lungs after 15 minutes.

Physiologist Dino Giussani and colleagues at the University of Cambridge in the United Kingdom theorized that hypoxia promotes harm in the womb primarily through stress caused when the low level of oxygen creates an overload of highly reactive molecules known as free radicals.

Now in a study published in the journal Scientific Reports, Alexander Zaika, Ph.D. and coworkers show that DNA damage in the esophageal cells caused by acidic bile reflux (BA / A) activates enzymes called NADPH oxidases in the mitochondria, the cell's power house, to release highly reactive - oxygen species (ROS).

«Without a membrane, the photoanode and photocathode are close enough to each other to conduct electricity, and if you also have bubbles of highly reactive hydrogen and oxygen gases being produced in the same place at the same time, that is a recipe for disaster,» Lewis says regarding his findings published in PNAS.

Seen from space humans, trees, elephants, or even whales are undetectable and unremarkable, yet Earth would reveal its secret to an outside observer through the surprising abundance of a highly reactive gas, molecular oxygen.

Reactive oxygen species are highly reactive molecules which containReactive oxygen species are highly reactive molecules which containreactive molecules which contain oxygen.

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.

They pack a powerful punch to fight free radicals (highly reactive forms of oxygen that can destroy cell membranes, and other structures including DNA and collagen).

They are highly reactive forms of oxygen whose effects can damage cell membranes and other structures in the body, including DNA and collagen.

Research suggests that Vitamin C is a highly effective antioxidant and that small amounts can protect essential molecules in the body from free radical damage and reactive oxygen species generated during normal metabolism, as well as through exposure to toxins and pollutants.

They claimed that witch hazel had a high affinity for human cells and cell membranes and hence was highly equipped to defend them against reactive oxygen species (free radicals).

Unshared electrons are highly energetic and react rapidly with oxygen to form reactive oxygen species (ROS).

* It is also a highly effective antioxidant that can protect the body's cells and molecules from damage by free radicals and reactive oxygen species generated during normal metabolism and exposure to environmental stressors.

* It is also a highly effective antioxidant that can protect the body's cells and molecules from damage by free radicals and reactive oxygen molecules generated during normal metabolism and exposure to environmental stressors.

The oxygen - containing molecules the body uses to produce energy can be highly reactive and can inadvertently cause damage to the mitochondria and even the cells themselves.

The «Fuels of Freedom» are non-toxic, chemically inert but readily react with oxygen, halogens and several other highly reactive chemicals such as ozone, noncorrosive, highly portable, and can be stored indefinitely in sealed containers (e.g., steel drums) and under an inert atmosphere (e.g., nitrogen) in large tanks.