Sentences with phrase «more hydrogen sulfide»

«Sour» crude oil, which includes many forms of dilbit, tends to have more hydrogen sulfide than typical U.S. crude oils

Cutting calories from the diets of mice, fruit flies, nematode worms and yeast led all of the organisms to produce more hydrogen sulfide, Mitchell and colleagues found.

Worms that made more hydrogen sulfide lived longer, on average, than those that made the normal amount of the gas.

Not exact matches

Indeed, it now seems that major volcanic eruptions 4 billion years ago would have created an even more diverse atmosphere than Miller used, including carbon dioxide (CO2), nitrogen (N2), hydrogen sulfide (H2S), and sulfur dioxide (SO2).

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.

The new work, by James Mitchell at the Harvard School of Public Health and colleagues, suggests that holding back calories causes cells to produce hydrogen sulfide, which somehow makes tissues more resilient and prolongs the life of laboratory organisms.

Ultimately, he found that, while volcanic eruptions would have spewed huge quantities of both sulfur dioxide and hydrogen sulfide into the atmosphere, it was the former that dissolved more easily in shallow waters, producing large concentrations of sulfidic anions, in the form of sulfites and bisulfites.

And if the enzymes that trigger the bacteria's creation of protective hydrogen sulfide in Nudler's study could be disabled, the bugs could be rendered more susceptible to drugs.

«If you treat cells with antibiotics, you see that they start producing more [hydrogen sulfide] right away.»

«This study shows for the first time that the oxidation of hydrogen sulfide and ammonia from the bottom waters could be a major contributor to lower pH in coastal oceans and may lead to more rapid acidification in coastal waters compared to the open ocean,» said Cai, the paper's lead author and an expert in marine chemistry and carbon's movement through coastal waters.

The study also revealed that Bilophila wadsworthia, a bacterium that produces hydrogen sulfide from the amino acid taurine, was significantly more abundant in African - Americans with colon cancer than in their healthy counterparts.

«We found that African - Americans have an increased abundance of bacteria that make hydrogen sulfide, which we demonstrated more than a decade ago to be a potent genotoxin,» Gaskins said.

It also can trigger the release of dangerous chemicals such as nitrous oxide, a greenhouse gas up to 300 times more powerful than carbon dioxide, and toxic hydrogen sulfide.

The main cloud bank in Uranus is a mix of hydrogen sulfide and ammonia, so scientists suspected that the Read more about Cloudy, with a chance of sulfide - Scimex

For more on the relationship between hydrogen sulfide and inflammatory bowel disease, see my video Preventing Ulcerative Colitis with Diet.

http://www.pnas.org/content/106/43/18045.full About a decade ago, Canfield (1) offered a very different possibility — that ventilation of the deep ocean lagged behind the GOE by more than a billion years, resulting in a vast, deep reservoir of hydrogen sulfide, but long - held presumptions about photosynthetic life in the surface waters remained untouched.

China faces bigger air pollution risks since its shale gas deposits generally contain more poisonous hydrogen sulfide than U.S. deposits.