Sentences with phrase «less than hydrogen»

That said, superefficient cars need hydrogen a lot less than hydrogen needs superefficient cars.

Not exact matches

We now know that the heavier, terrestrial elements compose less than one per cent of the sun's mass, the rest being essentially a mixture of the two lightest elements, hydrogen and helium.

Extracting CO2 from traditional coal plants is much less efficient than from gasification plants, where coal is first turned to a gas and reacted with water to form CO2 and hydrogen.

Results of a national FCEV demonstration found that, although less than the range on a tank of gasoline, the range on a tank of hydrogen has consistently increased, and now thousands of cars are being prepared to hit the market.

KATRIN will study neutrinos, which are less than a millionth the mass of an electron, by sifting through the aftermath of radioactive decays of tritium, an isotope of hydrogen with two neutrons.

Natural gas blended with renewable hydrogen also produces less emissions than regular natural gas when used at a power plant or as a transport fuel.

On a life - cycle basis, FCVs running on hydrogen derived from steam - reforming natural gas — currently the most affordable way of making hydrogen — produce less than half the greenhouse gas emissions of a gasoline - powered car.

By looking at the chemistry of rocks deposited during that time period, specifically coupled carbon and sulfur isotope data, a research team led by University of California, Riverside biogeochemists reports that oxygen - free and hydrogen sulfide - rich waters extended across roughly five percent of the global ocean during this major climatic perturbation — far more than the modern ocean's 0.1 percent but much less than previous estimates for this event.

When the researchers switched the electric current off by deoxygenating the water, thereby removing the electron acceptor at the sediment surface, the depth of the hydrogen sulfide layer in the sediment rose in less than an hour, as deeper microbes could no longer consume it.

Electrolysis requires a great deal of electricity, and the amount of energy you get out from the hydrogen is (according to the laws of physics) less than the amount you consume in electricity.

Having a mass of only less than seven per cent of the mass of the Sun, they are unable to create sufficient pressure and heat in their interiors to ignite hydrogen - to - helium fusion, a fundamental physical mechanism by which stars generate radiation.

They also showed that the nanoparticles» reaction with a 1 percent or less hydrogen peroxide solution was remarkably effective at killing bacteria, wiping out more than 99.9 percent of the S. mutans in the biofilm within five minutes, an efficacy more than 5,000 times greater than using hydrogen peroxide alone.

Stars richer in elements heavier than hydrogen and helium have less disordered motions, but are orbiting around the galactic center faster than older stars that are deficient in heavier elements.

At first blush the loss of the gene seems to make the outbreak strain less hardy, they found; it grew relatively slowly in a nutrient broth and was less tolerant to acidity and hydrogen peroxide than the reference bacterium.

If the strong nuclear force which glues atomic nuclei together were only a few per cent stronger than it is, stars like the sun would exhaust their hydrogen fuel in less than a second.

The association estimates that an adequate hydrogen refueling infrastructure of 12,000 stations — less than one tenth of the roughly 170,000 gasoline stations in the U.S. — could be built for no more than $ 15 billion.

Scientists at the National Institute of Standards and Technology (NIST) have developed a new device that measures the motion of super-tiny particles traversing distances almost unimaginably small — shorter than the diameter of a hydrogen atom, or less than one - millionth the width of a human hair.

Because hydrogen fluoride molecules break down at high temperatures, the spectra of warmer stars show less of the gas than those of cooler ones do — even if the warmer stars contain just as much fluorine.

They envision zero - carbon power plants that run on fuel made from hydrogen isotopes in seawater and produce less waste than today's nuclear power plants.

Though less dense and cooler than the hydrogen of a fusion reactor, the wind is a plasma — and can be probed thanks to STEREO.

The device could make hydrogen cars affordable for many more consumers because it produces hydrogen using nickel, iron and cobalt — elements that are much more abundant and less expensive than the platinum and other precious metals that are currently used to produce hydrogen fuel.

And in the past several years, disks seemed equally likely around brown dwarfs: gaseous balls less than 75 times the mass of Jupiter, unable to ignite sustained hydrogen fusion.

Because hydrogen fuel cells operate more efficiently at less - than - maximum power, their advantage relative to diesel generators rises, he said.

There are less than 100 publicly available hydrogen refueling stations worldwide.

If scientists could spot this hydrogen evaporating from a planet that is a bit more temperate and little less massive than GJ 436b, that is a good sign of an ocean on the surface.

A practical hydrogen tank should power a vehicle for 300 miles and take less than 5 minutes to fill; current technology does not come close.

If HD 181433 has a mass less than Sol's but is more evolved (i.e., where it may have already shut down hydrogen fusion in its helium - rich core), then it may be significantly older than Sol's 4.6 billion years.

When a star less than eight times the mass of our Sun runs out of the supply of hydrogen fueling the thermonuclear reaction raging in its stellar core, it may transform into a red giant instead of ending its life in a dramatic supernova explosion.

Like the other two stars, EZ Aquarii C is a probable M - type red dwarf that is close to the hydrogen - burning mass limit and so may have less than a tenth of Sol's mass.

Lacaille 9352 may have 50 to 58 of Sol's mass (Demory et al, 2009, Table 4; RECONS; and NASA Star and Exoplanet Database, interpolation table of Henry and McCarthy, 1993), less than half (43 to 46 percent) of its diameter (Demory et al, 2009, Table 4; and NASA Star and Exoplanet Database, derived from the power law formula of Kenneth R. Lang, 1980), 1.1 percent of its visual luminosity and 3.5 percent of its bolometric luminosity (NASA Star and Exoplanet Database, derived from the exponential formula of Kenneth R. Lang, 1980), and only about one tenth to 60 percent of Sol's abundance of elements heavier than hydrogen («metallicity»)(Demory et al, 2009, Table 4).

It may be somewhat less enriched as Sol with elements heavier than hydrogen («metallicity») based on the ionization balance of iron and a comparison between observed and computed profiles for the extremely strong ionized calcium (Ruck and Smith, 1995)-- metallicity measurements based on iron alone range from 55 to 155 percent of Sol's (Cayrel de Strobel et al, 1991, page 26).

It appears to be less enriched than Sol in elements heavier than hydrogen («metals») with about 72 - 89 percent of Sol's abundance of iron (Cayrel de Strobel et al, 1991, page 12).

Nisoli and his team found that the mitochondria of BCAAem - treated B6.129 S2 mice release less hydrogen peroxide (H2O2) and produce fewer ROS than do those of untreated mice.

While larger planets could have sufficient gravity to attract a massive hydrogen - helium atmosphere, smaller planets — like Mars or Mercury that have less than half the Earth's mass — located in or near their star's habitable zone may lose their initial life - supporting atmosphere because of low gravity and / or the lack of plate tectonics needed to recycle heat - retaining carbon dioxide gas back into the atmosphere (Kasting et al, 1993).

Fatty acids can be put into three categories based on the molecular length of carbon atoms connected to hydrogen atoms: short - chain that have less than 6 carbon atoms, medium - chain that have between 6 - 12 carbon atoms and long - chain that have between 13 - 21 carbon atoms.

7 oz filtered or distilled water (just fill the bottle a little less than half way) 7 oz Hydrogen Peroxide (Walmart carries big bottles for.88 cents)- or - vodka works great too 10 drops Tea Tree essential oil (can substitute Rosemary Essential Oil) 10 drops Lemon or Orange Essential oil

Demonstrated at the brand's Group Innovation Day, the hydrogen - powered 5GT is capable of refuelling in less than five minutes and has a range of nearly 434 miles.

When asked about hydrogen as a practical fuel, Bereisa told us, «There's a lot more hydrogen production around than people think, so if the country wanted to move to a hydrogen economy, it could get done pretty quickly and with a lot less investment than we're already seeing in the current stimulus package.»

The risk of explosion is lower than in older battery designs due to less venting of hydrogen gas in current designs.

A study of greenhouse gas - emissions by the Advanced Power and Energy Program at the University of California at Irvine shows fuel - cell vehicles running on hydrogen derived from natural gas ultimately create far less GHG emissions than BEVs running off the U.S. grid, which is powered mostly by coal and natural gas.

Ford's plans are decidedly less ambitious than those made by crosstown rival General Motors, which last month announced plans to bring out 20 new battery - electric and hydrogen - fuel - cell vehicles by 2023.

Boot space is put at 500 litres — 115 litres less than the e-tron quattro due to the packaging of the hydrogen tanks.

But «competitor» may be too strong a word, given the fact that there are just 91 hydrogen filling stations in the U.S. (less than two per every state is one way of looking at it), and most of them are in California, where these two models are sold.

More importantly, Toyota says their «groundbreaking vehicle» will be able to travel for up to 300 miles (483 km) before running out of hydrogen while a full refill will take less than five minutes.

A hydrogen version could also be in the cards, although that's less likely than a hybrid and would need to at least make use of the hydrogen fuel cells currently being used in the Toyota Mirai.

The odiferous component comprises less than 1 % by volume and is mostly hydrogen sulphide and methaneniol (Suarez et al. 1997; Suarez et al. 1998).

Making Hydrogen in these ways, and using it to run an automobile has to be less efficient than the direct use of hydrocarbon fuels and electricity to run a car, and can't reduce the total amount of CO2 emissions.

An Apollo type national R&D program will convert this country from fossil fuel energy economy to a hydrogen one in less than 10 years.

When water is formed from hydrogen and oxygen, the weight is a little bit less than would be expected.

The scale of an orderly transition to solar - hydrogen power plants, millions of «energy free» homes and a carbon - free transportation system over a period of 25 years is doable and would cost less than waging energy waes.