Sentences with phrase «nitrogen compounds in»

Nitrous Oxide is produced when bacteria breakdown the nitrogen compounds in soils and the oceans.

My research activity consisted of collecting soil samples from different areas of the Mississippi River and investigating the behavior of nitrogen compounds in the special conditions of flooded soils.

NOx gases are produced in oxygen - poor soils when microbes break apart nitrogen compounds in the fertilizer, a process called denitrification.

When these two food groups are combined, the reaction of unsaturated fatty acids with nitrogen compounds in the vegetables results in the formation of nitro fatty acids.

Not exact matches

«Harmful materials like sulphur compounds, metals, nitrogen compounds that will end up producing harmful gases or solids, we leave them there and just extract a good quality oil,» Pereira - Almao, AICISE's co-director, explains in a video posted on the research institute's website.

When sulfur dioxide gets into the atmosphere and meets nitrogen oxides, compounds are formed that lead to acid in the rain.

Meat industry wastewater may also have a high content of nitrogen (from blood) and phosphorus, in addition to pathogenic and non-pathogenic viruses and bacteria, and parasite eggs (not to mention disinfectants and detergents may enter the wastewater stream during facility - cleaning activities, including acid, alkaline, liquid paraffin and neutral compounds)

«Garden equipment engines emit high levels of carbon monoxide, volatile organic compounds and nitrogen oxides, producing up to 5 % of the nation's air pollution and a good deal more in many metropolitan areas like Los Angeles.

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

In addition, we found that among the different nitrogen treatments, manure - enriched soil had the highest amounts of compounds related to microbial turnover,» said Gillespie.

You could argue [on] the climate change [one], but [on nutrient] pollution we have used so much [fertilizer] and so much nitrogen compounds are loose in the environment, it is hard to recognize our coastal oceans anymore; of the species that are gone [and] that kind of thing.

Specifically, we found less plant - type compounds in soils receiving nitrogen.

The researchers reported finding several amino acids, as well as nitrogen - containing organic compounds called amines, on the foil in 2008.

The machine effectively detected ninhydrin - reactive nitrogen, one of the telling compounds of decomposition, in both sites as the animals disintegrated over the next 20 weeks.

«The presence of nitrogen - bearing compounds in Martian soil means the existence of a source of biochemically accessible nitrogen, and suggest that it could be a nitrogen cycle sometime along the evolution of Mars as a planet,» he says.

Volcanic plumes were ideal crucibles for sparking stable nitrogen to form reactive compounds that led to the first organic molecules, chemists report in the 15 August Geophysical Research Letters.

Species known as mycorrhizal fungi use their mycelia to envelop or penetrate plant roots, contributing nitrogen compounds and mineral salts in exchange for sugars from the host organism.

An abundance of minerals containing ammonia on a relatively rocky world like Ceres is surprising, De Sanctis says, because the volatile compound of nitrogen and hydrogen can not persist long in the relatively warm and sunny regions of the inner solar system where Ceres now resides.

LA's smog is caused by sunlight driving chemical reactions between oxygen, nitrogen compounds and hydrocarbons in the lower atmosphere.

Nitrospinae bacteria, which use the nitrogen compound nitrite to «fix» inorganic carbon dioxide into sugars and other compounds for food and reproduction, are responsible for 15 to 45 percent of such carbon fixation in the western North Atlantic Ocean, researchers report in the...

Fixation processes free up nitrogen atoms from their diatomic form to be used in other ways, but nitrogen does not easily react with other chemicals to form new compounds.

The space station's current recycling process disposes of urea, the main nitrogen - rich compound in urine, Nicolau says.

Beijing has been battling an unwelcome, unrelenting and «very unhealthy» smog for many months, much of it made up of particulate nitrogen compounds suspended in the air.

Most of China's nitrogen pollution is in the form of ammonia compounds, the kind found in fertilizer.

In nature, only one enzyme — bacterial nitrogenase — can achieve the same reaction, but without emitting excess nitrogen compounds into the environment, or in other words, leaching of nitrates into groundwateIn nature, only one enzyme — bacterial nitrogenase — can achieve the same reaction, but without emitting excess nitrogen compounds into the environment, or in other words, leaching of nitrates into groundwatein other words, leaching of nitrates into groundwater.

Matula says this sudden illumination happens because during the first bout of sonoluminescence, temperatures in the bubble, which can be as high as several hundred thousand degrees — hotter than the sun's surface — do something to nitrogen and oxygen to make them form compounds such as nitrous oxide that dissolve in the surrounding water.

Researchers led by Carol Pitcairn of the Institute of Terrestrial Ecology in Penicuik, near Edinburgh, have studied the nitrogen content of British sphagnum mosses and heather collected over the past forty years, and correlated these fignres with measurements of the local fallout of nitrogen - containing compounds.

All living things need nitrogen to grow, so in small quantities, these compounds are beneficial.

But here's the rub: Chemical companies turn nitrogen found naturally in the atmosphere into ammonium and nitrate compounds that make up fertilizer.

«This work shows that carefully designed chemical compounds can help us figure out how natural systems use plentiful raw materials like the nitrogen in our atmosphere,» Holland said.

Large amounts of nitrogen oxide compounds are produced in particular by intensive lightning over land.

Volatile organic compounds, carbon monoxide, and nitrogen oxides from Asian cars and industry mix in the atmosphere as they cross the Pacific Ocean and convert in sunlight into ozone, a main ingredient in smog, Jaffe explains.

One triple bond releases much more energy when it forms than is needed to break the three single bonds that bind the nitrogen in the starting compound.

Among biogenic volatile organic molecules is a class of compounds called monoterpenes, which react with ozone, hydroxyl radicals, nitrogen oxides, and other gases in the atmosphere.

Like vehicles and power plants, trees emit airborne chemicals called volatile organic compounds (VOCs), which in the presence of sunlight react with nitrogen oxides in vehicle fumes to form ozone, one of the components in smog that makes it a health threat.

«Carbon easily forms triple bonds, nitrogen easily forms triple bonds,» says Holger Braunschweig of the Julius Maximilian University of Würzburg in Germany, who led the team of researchers that made the compound.

They have also found components used to make DNA, the molecule that carries the instructions for how to build and regulate a living organism, as well as other biologically important molecules like nitrogen heterocycles, sugar - related organic compounds, and compounds found in modern metabolism.

(Industrial sectors such as oil and gas production don't emit ozone directly; rather, they emit compounds — such as nitrogen oxides and volatile organic compounds — that get converted to ozone in the atmosphere.)

Alien as this may seem, Titan's atmosphere — rich in nitrogen and organic compounds — may be similar to the atmosphere of early Earth.

The compound acts as a photocatalyst, breaking down nitrogen oxides, ammonia and other pollutants in the presence of sunlight.

In the second scenario, Pfister and her colleagues found that sharp reductions in nitrogen oxides and volatile organic compounds could reduce ozone pollution even as the climate warmIn the second scenario, Pfister and her colleagues found that sharp reductions in nitrogen oxides and volatile organic compounds could reduce ozone pollution even as the climate warmin nitrogen oxides and volatile organic compounds could reduce ozone pollution even as the climate warms.

In their paper, published in Scientic Reports, the authors present the first demonstration that single - photon emission from a specially oriented compound defect (a nitrogen vacancy center) in diamond is dynamically and statically unpolarized with intrinsic randomnesIn their paper, published in Scientic Reports, the authors present the first demonstration that single - photon emission from a specially oriented compound defect (a nitrogen vacancy center) in diamond is dynamically and statically unpolarized with intrinsic randomnesin Scientic Reports, the authors present the first demonstration that single - photon emission from a specially oriented compound defect (a nitrogen vacancy center) in diamond is dynamically and statically unpolarized with intrinsic randomnesin diamond is dynamically and statically unpolarized with intrinsic randomness.

In one, emissions of nitrogen oxides and volatile organic compounds from human activities would continue at current levels through 2050.

Researchers in the Doyle lab at Princeton have developed a direct cross-coupling reaction to produce nitrogen - containing compounds called 1,2 - dihydropyridines, versatile building blocks that are highly useful in pharmaceutical research.

Vertical and horizontal distribution of oxygen, nitrogen compounds and iron in seawater in the oxygen minimum zone off Peru.

Together, the measures were designed to decrease carbon monoxide, nitrogen dioxide, sulfur dioxide, particulate matter and other compounds in the air that are considered major public health concerns, playing a role in an estimated 1.4 percent of deaths worldwide, and 2 percent of all cardio - pulmonary deaths worldwide.

Figure 1) Schematic picture of unpolarized single - photon generation using a compound defect, a nitrogen vacancy center (NV center), in a diamond.

Boron joins carbon and nitrogen as one of the few elements in the periodic table known to form stable compounds featuring triple bonds.

Some microbes have evolved proteins called nitrogenases that can split apart nitrogen molecules in the air and weld that nitrogen to hydrogen to make ammonia and other compounds that plants can absorb to get their nitrogen.

The Animal Core routinely provides liver samples to individual investigators either on ice, fixed in formalin for histology, frozen in optimal cutting temperature (OCT) compound for immunohistochemistry, flash frozen or freeze - clamped in liquid nitrogen for biochemical assays or stored in RNA later.