Sentences with phrase «from hydrogen sulfide»

As they become anoxic, many species begin to die off, and the chemocline which separates oxygen rich waters above from the hydrogen sulfide rich waters below will rise toward the surface eventually spewing the poisonous gas into the atmosphere and wiping out countless species...... possibly our own.

The question is what levers do we have to push the climate away from a hydrogen sulfide catastrophe?

Strobel and colleagues also discovered that a clathrate formed from hydrogen sulfide and molecular hydrogen (H2S + H2) exhibited different behaviors under different pressure conditions.

Emissions from hydrogen cyanide (HCN), formyl ion (HCO +), and carbon monoxide (CO) are clearly detected, although the emission from hydrogen sulfide (CS) was not detected.

The microbes (bacteria and Archaea) which form the base of the food chain are chemosynthetic, using energy from hydrogen sulfide in the vent fluid, and oxygen and carbon dioxide from the seawater, to create simple sugars.

Not exact matches

«They found hydrogen sulfide, the odiferous gas that most people avoid, in Uranus's cloud tops,» according to a press release from Gemini Observatory, a high - power telescope atop a Hawaiian volcano.

The vast distance, aside from making the planet distant and difficult to study, leads to blisteringly cold temperatures that freezes hydrogen sulfide.

Until now, however, this chemical was not considered a good catalyst for making moly sulfide to produce hydrogen from water through electrolysis.

Indeed, hydrogen sulfide, ammonia and other compounds from river sediments probably caused massive fish deaths in July, scientists have concluded, and crocs eating these contaminated fish could have been affected.

By contrast, in the tube worm millions of symbiotic bacteria that dwell within the its large plumes grab hydrogen sulfide and other noxious chemicals that seep from the vents and convert them into food and energy for their host, a process called chemosynthesis.

As bacteria fed on the creatures that rained from above, they produced toxic gases — methane, carbon dioxide, and hydrogen sulfide — that in turn bubbled up to poison the birds and insects flying overhead.

Bacteria sitting in the top layer of sediment receive electrons that they use to consume oxygen from oxygen - deprived but well - nourished bacteria deep down, which consume hydrogen sulfide and carbon.

So the bacteria evidently form a sort of conductive chain, comprising biological nanowires and possibly pyrite grains embedded in the mud, that allows electrons from the oxidation of hydrogen sulfide and carbon within the sediment to contribute to the reduction of oxygen by other microbes at the sediment surface.

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.

In 2015, chemists from Cambridge University, led by John Sutherland, who is a co-author on the current study, discovered a way to synthesize the precursors to RNA using just hydrogen cyanide, hydrogen sulfide, and ultraviolet light — all ingredients that are thought to have been available on early Earth, before the appearance of the first life forms.

Using a simple, scalable method, the researchers developed a photocatalyst to generate hydrogen from water vapor using a highly porous, sulfur - rich molybdenum sulfide.

Separation anxiety The hydrogen sulfide proved very troublesome because it corroded the hardware and formed compounds that hampered the processing equipment when it was separated from the steam.

The company EcoVerde, by Mexican Humberto Uribe Luis Lobo, designed a new filtration system that removes odor and other pollutants from wastewater through a biological process based on bacteria that feed on hydrogen sulfide, a substance characterized for a rotten egg - like stench.

They produce hydrogen sulfide, which, in combination with nitric oxide (a typical by - product of bacterial metabolism) seems to protect bacteria from antibiotic assaults.

This zone is suspected to be due to a combination of factors, most importantly, from acids produced when bottom water rich in toxic hydrogen sulfide gets mixed upward.

«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.

Not only can they hide from mackerel amongst the jellies» stinger - covered tentacles when they rise from the seafloor to feed and digest at night, they can also survive for hours within the ocean floor's low - or no - oxygen muds, which are pervaded by poisonous hydrogen sulfide gas — an inhospitable place lacking any other vertebrate species.

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.

Our cells produce hydrogen sulfide from the amino acid L - cysteine, thanks to help from two enzymes, cystathionine β - synthase (CBS) and cystathionine & # 947 - lyase (CSE).

Huang refers to the splitting of water, a process used to create gaseous hydrogen and oxygen from liquid water where properly defective molybdenum sulfide could enhance the process and reduce the amounts of energy and costs needed and increase the amount of hydrogen produced.

The hydrogen sulfide released from the surface waters causes the Namibian coast to smell like rotten eggs, and it often drives away lobsters.

Once thought to be a periodic phytoplankton bloom, the highly visible occurrence (shown here as wispy areas near the coast) is now known to be the result of periodic hydrogen sulfide gas eruptions from the diatomaceous sediments underlying the highly productive waters of the northern Benguela upwelling zone.

As it turned out, they were feeding on bacteria that got their energy from hydrogen and hydrogen sulfide emanating from underwater volcanic vents.

Therefore, the research group targeted molecular line emissions from hydrogen cyanide (HCN), formyl ion (HCO +), and hydrogen sulfide (CS) at millimeter / submillimeter wavelengths (* 4) in the galaxy called NGC 1097 (about 50 million light years away) with the ALMA Telescope in the Atacama Desert in Chile.

Just read this from Robert Scribbler https://robertscribbler.com/2016/04/28/ncar-global-temperature-increase-depletes-oxygen-in-most-ocean-zones-by-the-2030s/ If you think the methane monster is frightening, look out for the hydrogen sulfide monsters.

We showed that the transition from closed to open state leads to significant decreases in aqueous pH to circumneutral values and significant increases in aqueous hydrogen sulfide and iron concentrations to 10.6 μM and 59.1 μM, respectively, due to sediment AVS oxidation following sediment resuspension.

From RNase L to the gut to hydrogen sulfide to LDN, Dr. De Meirleir has been on the cutting edge of treatment and research.

The smell appears to come primarily from the digestion of sulfur - rich foods, so to cut down on the stench, experts have recommended cutting back on foods such as meat and eggs (hydrogen sulfide is called «rotten egg gas» for a reason).

Other undesirables that appear during chemical hydrolysis are levulinic and formic acids, instead of beneficial lactic acid, and the gas produces dimethyl sulfide, hydrogen sulfide and furfurol from the amino acid methionine.

Hydrogen sulfide gas produced from high sulfur plant foods could be harmful but only those with colonic sulfide - producing bacteria need to be concerned about that, and that is about 50 % of people.

Just from that the bacteria changes from being irritating and turns into something that destroys the bone and produces hydrogen sulfide, thus causing, bad breath!

The odor comes from sulfur - containing gases like hydrogen sulfide.

Debris from the surrounding trees fall into the blue hole which then decays resulting in a build - up of tannic acid and hydrogen sulfide in the water.

The solid fragrance of hydrogen sulfide approaching from the lake's surface wouldn't permit you to admire the stunning and incredible view for long.

The presence of hydrogen sulfide prevents creatures from making the floor their home.

Geologists now know that the Gakkel Ridge is an active zone of slow spreading tectonic plates with massive amounts of activity including explosive emissions of super carbonated magma that have blown the tops off dozens of undersea mountains, produced mineral / metal riches from extensive hydrothermal vents throughout the range and holds sea life around smoker chimneys with abundant hydrogen - sulfide based ecosystems.

Hydrogen sulfide also damages ozone layer, and fossil spores from the end - Permian era shown deformities that could have been caused by ultraviolet radiation.

The gas from the Natuna well would be piped to a nearby platform where the valuable methane would be separated from the waste CO2 and the toxic hydrogen sulfide.

What you did not know was that the other half of the book essay from which the post was excerpted concerned Pacific corals, and exposes scientific misconduct in the main paper (omission of data, specifically hydrogen sulfide at the Dobu Island seep with an L50 of 30ppb) on the part of Australian researchers at Milne Bay, misconduct rewarded by prominent mention in the Seattle Times Sea Change series.

Hydrogen Sulfide Extinction EARTH SCIENCE Impact from the Deep... heat and gases emanating from the earth and sea, not asteroids, most likely caused several ancient mass extinctions....