Sentences with phrase «oxygen gases as»

The technique could be used as a detection sensor for hydrogen or oxygen gases as well as for property controls of organic semiconductors and organic light emitting diodes (OLEDs).

Not exact matches

Some see it as oxygen — they can't live without it — and others see it as Sarin gas — not wanting to get near it.

Multi-layer packaging films using a barrierofSelar ® PA control water vapor, oxygen, and carbon dioxide gas exchanges — providing better control for barrier requirements such as maturation and weight loss for soft cheeses.

In the UK, they offer «gas and air» as a form of pain relief, and that would be oxygen and laughing gas.

«One of the proposed scenarios,» comments Romano Corradi, director of the GTC and another of the authors «is the presence of a component in the gas which is different from that which we normally find, poor in hydrogen and rich in heavier elements such as oxygen and carbon.

That is, oxygen tends to fall out of the air as rust and other mineral oxides rather than linger as a gas, so when it exists in abundance, something — photosynthetic life, in Earth's case — must be constantly replenishing it.

The Geiger counter showed it was hot as a pistol, so we sealed it up in a steel canister and filled the canister with argon gas, which pushed out all the oxygen.

There are basically two types of lines, those produced by collisions between the atoms or ions and the electrons in the surrounding gas, which are called collision lines, and which are very bright for elements such as oxygen, nitrogen and neon, and lines which are produced when ions capture free electrons, which are called recombination lines, and which are bright only for those gases with the highest abundances in the interstellar medium: hydrogen and helium.

There's a cathode and an anode; at the anode, water is split into protons and oxygen gas, and at the cathode, CO2 is electrochemically reduced to other value - added chemicals, such as carbon monoxide, methane, ethylene.

Of the remaining four billion years of Earth's history, our planet seems to have spent its first two billion as a «slime world» ruled by methane - belching microbes for which oxygen was not a life - giving gas, but a deadly poison.

As he did in his fascinating portraits of the elements, Kean profiles individual gases such as nitrogen and oxygen primarily through the scientists and entrepreneurs who discovered or sought to harness theAs he did in his fascinating portraits of the elements, Kean profiles individual gases such as nitrogen and oxygen primarily through the scientists and entrepreneurs who discovered or sought to harness theas nitrogen and oxygen primarily through the scientists and entrepreneurs who discovered or sought to harness them.

They carefully selected ions that react with volatile trace gases, but don't react with abundant compounds in breath such as oxygen and nitrogen.

The technology can be applied to upstream production of gas as well as in petrochemical plants and for medical uses to harvest oxygen from other gases.

Like hydrogen, oxygen, and iodine, nitrogen normally exists as two - atom molecules in the form of a gas at room temperature.

At high heat, the cladding interacts with the surrounding water vapor, binding tightly to the oxygen and freeing the hydrogen, which escapes as a gas.

They become caught in powerful magnetic fields and are channeled into the upper atmosphere, where their interactions with gas particles, such as oxygen or nitrogen, set off spectacular bursts of light.

The gas seems to act as an antioxidant, protecting brain cells from the toxic aftereffects of oxygen starvation that strokes can cause.

Another mystery — when oxygen made its debut as a leading gas in Earth's life support system — was pushed back from 1.2 billion years ago, the time when the earliest land - based life appears in the fossil record.

Bean and Kempton, meanwhile, are interested in detailing what a statistical census of biologically significant gases such as oxygen, carbon dioxide and ozone could reveal about planetary habitability.

And each gas emits a particular color as a result: Oxygen makes green light at common aurora altitudes, so that's what we see most often.

Kourosh Kalantar - Zadeh, an engineer at the Royal Melbourne Institute of Technology in Australia, and his colleagues built plastic capsules about 2.5 centimeters long — about as long as a Jolly Rancher hard candy — that sniff out carbon dioxide, hydrogen and oxygen gas molecules in the gut.

Supernovas are extremely important for cosmic ecology because they inject huge amounts of energy into the interstellar gas, and are responsible for dispersing elements such as iron, calcium and oxygen into space where they may be incorporated into future generations of stars and planets.

For instance, catalytic gas converters use platinum - based metals to transform harmful emissions such as carbon monoxide into nontoxic gases by adding oxygen.

A third route, known as pyrolysis, heats dried and ground biomass to about 550 ˚C in an oxygen - depleted chamber (so the biomass doesn't burn), producing a mixture of gases, liquids, and a gray, carbon - rich solid called coke.

To make matters worse, German and Japanese researchers recently increased CO2 levels in seawater and found that the greenhouse gas can damage some marine organisms directly: Squid slowly asphyxiated as the excess CO2 crowded out oxygen in their blood, and fish embryos and larvae were abnormally small and less likely to survive.

In the years since, he has parlayed his Russian connections into a thriving operation that buys technologies such as metal - cutting gas blowtorches and oxygen generators originally designed for the Russian space station Mir.

Oxygen theory of combustion: Antoine Lavoisier, 1770s Lavoisier did not discover oxygen, but he figured out that it was the gas that combined with substances as they bOxygen theory of combustion: Antoine Lavoisier, 1770s Lavoisier did not discover oxygen, but he figured out that it was the gas that combined with substances as they boxygen, but he figured out that it was the gas that combined with substances as they burned.

In one scenario, interstellar clouds contain tricky - to - see oxygen gas, which got caught up as the cloud collapsed into a disc, then flash - froze and stuck to tiny grains of ice.

Free oxygen is not bound to another element, as are the oxygen atoms in other atmospheric gases like carbon dioxide and sulfur dioxide.

Oxygen gas sensors are extensively used to monitor the oxygen concentration in automotive exhaust and in medical instruments such as anesthesia monitors and respirOxygen gas sensors are extensively used to monitor the oxygen concentration in automotive exhaust and in medical instruments such as anesthesia monitors and respiroxygen concentration in automotive exhaust and in medical instruments such as anesthesia monitors and respirators.

In addition, a supercritical turbine could fit into a directly heated cycle, where a fuel like natural gas burns in the presence of pure oxygen inside the turbine, creating only water and carbon dioxide as waste.

If there were too much UV light, no water could survive on the surface because the water molecules would break up and escape through the top of the atmosphere as hydrogen and oxygen gas.

The model showed that carbon, as it combines with oxygen to form CO gas, would have degassed before other volatiles.

As it rose from the lunar depths, that carbon combined with oxygen to make substantial amounts carbon monoxide (CO) gas.

When they restored normal nitric oxide levels by having mice breathe in the short - lived gas — as patients have done in clinical trials — cell adhesion did not increase when oxygen levels decreased.

«The prevailing thinking has been that as the oceans warm due to increasing atmospheric greenhouse gases, the oxygen content of the oceans should decline,» Thunell says.

Basically, the oxygen gobbles up all the bad atoms off the surface of the niobium, and afterwards everything gets pumped out as a gas,» Jones said.

The researchers don't yet know how the skin senses the gas, but they found that mouse skin contains the same oxygen - sensitive potassium channels as the lung.

Life is the dominant source of the molecular oxygen on our planet, as the gas is produced by photosynthesis in plants and microscopic, single - cell organisms.

If there are a lot of gases that consume oxygen, such as methane or hydrogen, then any oxygen or ozone produced will be destroyed in the atmosphere.

Strontium cobaltites are just one example of a class of materials known as transition metal oxides, which is considered promising for a variety of applications including electrodes in fuel cells, membranes that allow oxygen to pass through for gas separation, and electronic devices such as memristors — a form of nonvolatile, ultrafast, and energy - efficient memory device.

To heat that boiler, the damp, crumbly brown coal known as lignite — which is even more polluting than the harder black anthracite variety — burns in the presence of pure oxygen, a process known as oxyfuel, releasing as waste both water vapor and that more notorious greenhouse gas, carbon dioxide (CO2).

The sensors detected changes in oxygen pressure as small as 15 millimeters of mercury, and it took less than 10 minutes to see the effects of a change in inhaled gas.

The reaction combines the hydroxyl molecule (OH, produced by reaction of oxygen and water) and carbon monoxide (CO, a byproduct of incomplete fossil fuel combustion) to form hydrogen (H) and carbon dioxide (CO2, a «greenhouse gas» contributing to global warming), as well as heat.

Consequently, massive amounts of reactive gases such as oxygen, hydrogen, and methane are continually being added to Earth's now «anomalous» atmosphere faster than they would otherwise be removed by inorganic chemical processes.

The oxygen would have «burned up» the carbon to produce gases such as carbon dioxide and monoxide, which would have moved into the outer disk along with water vapor before chilling into ices, so that any solid carbon in the inner solar system would have been destroyed within a few years.

With little oxygen available to convert that hydrogen into water, hydrogen gas probably accumulated in the atmosphere and oceans in concentrations as high as hundreds to thousands of parts per million.

Eventually, Stars Aa and Ab will lose much of their current mass, from intensified stellar winds that eventually puff out their outer gas envelopes of hydrogen and helium (and lesser amounts of higher elements such as carbon and oxygen) into interstellar space as planetary nebulae.

Although atmospheric oxygen soon recovered again as photosynthesis and weathering reached a new balance, at about 10 per cent of present - day levels, the oxidative weathering of sulphides on land filled the oceans with sulphate which created abundant food for a group of bacteria that filled the oceans with sewer gas (hydrogen sulphide) toxic to oxygen - loving lifeforms (delaying the development of eukaryotic plants and animals) and turned them «into stinking, stagnant waters almost entirely devoid of oxygen.»

The hydrogen and oxygen gas can be stored separately, and later brought together as fuel in what is called a fuel cell.