Sentences with phrase «organic carbon found»

Eran Hood, professor of environmental science at the University of Alaska Southeast in Juneau, and colleagues report in Nature Geoscience that they developed a database of dissolved organic carbon found in 300 samples collected from glaciers on five continents.

As ice the melts, the organic carbon found in permafrost is being released once again after ages of confinement in the soil.

Not exact matches

Darin Kingston of d.light, whose profitable solar - powered LED lanterns simultaneously address poverty, education, air pollution / toxic fumes / health risks, energy savings, carbon footprint, and more Janine Benyus, biomimicry pioneer who finds models in the natural world for everything from extracting water from fog (as a desert beetle does) to construction materials (spider silk) to designing flood - resistant buildings by studying anthills in India's monsoon climate, and shows what's possible when you invite the planet to join your design thinking team Dean Cycon, whose coffee company has not only exclusively sold organic fairly traded gourmet coffee and cocoa beans since its founding in 1993, but has funded dozens of village - led community development projects in the lands where he sources his beans John Kremer, whose concept of exponential growth through «biological marketing,» just as a single kernel of corn grows into a plant bearing thousands of new kernels, could completely change your business strategy Amory Lovins of the Rocky Mountain Institute, who built a near - net - zero - energy luxury home back in 1983, and has developed a scientific, economically viable plan to get the entire economy off oil, coal, and nuclear and onto renewables — while keeping and even improving our high standard of living

The Initiative is based on the finding that «4 ‰» annual growth rate of the soil carbon stock would make it possible to stop the present increase in atmospheric CO2 and aims to use a range of agricultural systems to sequester CO2 and store it in the ground as soil organic carbon (SOC).

Previous experiments for detecting existing life on Mars, such as the one on the 1976 Viking missions, focused on finding organic carbon, which is necessary for life as we know it but can also be produced by non-biological processes.

Sophisticated carbon dating helps narrow in on the age of organic materials found in ancient ovens.

Using a six - square - mile test plot, they found that the organic carbon comes from shallow ponds that were dug to provide soil for flood protection.

Evidence for such an origin might be bolstered if scientists find signs of other materials known to be present in comets, like carbon - based compounds called organics.

To their surprise, the researchers found that the samples from the thermokarst sites had lower levels of colored dissolved organic matter than did reference sites, suggesting that the carbon in the deeper soils exposed by thermokarst failure is significantly different from the carbon draining from the topmost, active layer of the permafrost, the team reports in the Proceedings of the National Academy of Sciences.

When the scientists found the telltale bands of sand, they measured the ages of organic matter in the layers with carbon - 14 dating.

On Earth, the most reliable way to measure the ages of alluvial fans is by radiocarbon dating — but that requires organic carbon, which we haven't yet found on Mars.

A team led by scientists at Lawrence Berkeley National Laboratory found that the type of plant inputs (that is, root or needle litter) affected total carbon and nitrogen retention over 10 years, but that soil horizon (essentially, the layer of soil, such as the topsoil organic or deeper mineral layers) affected how the litter - derived soil organic material is stabilized in the long term.

Research at the Rodale Institute found that «organic farming helps combat global warming by capturing atmospheric carbon dioxide and incorporating it into the soil, whereas conventional farming exacerbates the greenhouse effect by producing a net release of carbon into the atmosphere.»

Photo credit: DRIChakrabarty and colleagues found to their surprise that funeral pyre emissions contain sunlight - absorbing organic carbon aerosols known as brown carbon.

To find out, Cassini will analyze radiation bouncing off the ring particles to look for silicates, carbon, ammonia, organics, and other substances.

Hayes and his colleagues looked at organic compounds from sediments formed between 1.8 billion and 550 million years ago, and found that simple hydrocarbons from the sediments contained more carbon - 13 than more complex organic molecules.

This taste of carbon is intriguing, but it is a far cry from recent feverish speculation that the rover had found definitive evidence for organic compounds on Mars.

The team's findings provide one possible mechanism for an observed increase in the concentration of dissolved organic carbon in the surface waters of North America and Europe during the last few decades, and have implications for management of water quality in coastal zones worldwide.

«The biocrusts are a big buffet and we find in our study that they each use different fractions of dissolved organic carbon, so it takes a community to consume a buffet,» Northen said.

During Curiosity's first «meals» of Martian soil, baked inside the robot's ovens, carbon and hydrogen were found to have reacted with chlorine, creating organic molecules.

They found that high rates of carbon accumulation in lake sediments were stimulated by several factors, including «thermokarst erosion and deposition of terrestrial organic matter, -LSB-...] nutrient release from thawing permafrost that stimulated lake productivity, and by slow decomposition in cold, anoxic lake bottoms.»

The addition of easily degradable organic carbon forms (such as glucose) was found to increase chlorination significantly.

As photosynthesis favours the lighter isotope, carbon 12, over the heavier carbon 13, this «light» ratio finding suggests that organic material from biological sources may have been more abundant in diamond - forming zones early in the Earth's history than we find today,» explained Suzette Timmerman, lead author on the study.

As these more substantial microbes die, the researchers found they increase the flux of sinking organic carbon particles by as much as 35 percent.

Linking the amount of carbon - 14 found in organic material with the bomb curve has been used to date human tooth enamel and even regenerating brain cells.

The researchers also found that — among their hundreds of production scenarios — organic ones were more energy - intensive on average, producing more carbon dioxide than conventional production.

Intriguingly, radioactive carbon was detected, but then another experiment found no evidence of organic compounds in the soil — there were no alien bodies.

In fact, they found that in the Great Plains states up to half of light absorption is due to organic matter, or «brown carbon» from burning fossil fuels and from soil that mixes in with falling snow.

«These superdeep diamonds contained much less carbon - 13, which is most consistent with an origin in the organic component found in altered oceanic crust.»

Researchers have found that carbon particles released into the air from burning trees and other organic matter are much more likely than previously...

The near - infrared mapping spectrometer on NASA's Galileo spacecraft found evidence of the presence of molecules made of oxygen, carbon, sulfur, hydrogen, and nitrogen on Europa, and a hint of the presence of a class of complex organic compounds called tholins which may be driven by pre-biotic processes (more).

Radioactive dating of the uranium and lead found in the minerals (and organic carbon and light isotope carbon (C13) in bulk - rock carbonates) within the trace fossils that bacteria etched into the glass around 3.342 + / - 0.068 billion years ago (Jonathan Amos, BBC News, October 12, 2010; Fliegel et al, 2010; Grosch et al, 2009; and Furnes et al, 2004).)

These findings underscore the need for more research and tools — such as this new soil organic carbon app — to help choose where and how to foster sequestration of carbon in soils.

Adapted to their very hot but watery environment, these microbes metabolized hydrogen - rich compounds or dead or live organic materials to derive the energy that sustains anaerobic life, including sulfate - reducing bacteria that produce Hydrogen Sulfide (H2S), fermentative bacteria that produce carbon dioxide and alcohol -LRB-- OH), and methanogenic bacteria — the methanogens found in sewage and mudflats today — that produce methane (CH4) gas as a waste product.

Also, in space beyond our solar system, there have been found organic molecules with bonds of carbon and oxygen which make up amino acids.

Even in the absence of oxygen, the research team found that the respiration of organic carbon occurring in the anoxic waters of the Black Sea is not as different from that occurring in the deep ocean.

Based on accumulating measurements of microbes in the subglacial environment, he calculates that the concentration of cell and organic carbon in the Earth's ice sheets, or «cryosphere», may be hundreds of times higher than what is found in all the planet's freshwater systems.

Carozza et al (2011) find that natural global warming occurred in 2 stages: First, global warming of 3 ° to 9 ° C accompanied by a large bolus of organic carbon released to the atmosphere through the burning of terrestrial biomass (Kurtz et al, 2003) over approximately a 50 - year period; second, a catastrophic release of methane hydrate from sediment, followed by the oxidation of a part of this methane gas in the water column and the escape of the remaining CH4 to the atmosphere over a 50 - year period.

The Science Sunlight and microbes found in Arctic waters interact to degrade dissolved organic carbon (DOC) that is flushed from thawing Arctic permafrost soils into...

Kitagawa described how porous coordination polymers (PCPs) / metal - organic frameworks (MOFs) have been found to be able to store large volumes of gases, which has in turn sparked studies around the world on the mass storage of carbon dioxide and methane.

In a lake at the surface, you'd find a lot of microbes that use the energy from sunlight to turn carbon dioxide into more complex organic compounds, such as sugars, and use them for energy.

Researchers in Portugal have found that plants not only remove carbon dioxide from the air, but they can also filter out allergy aggravators like formaldehyde and volatile organic compounds (VOCs) like benzene.

Couples use our discovery tools to find event, riding friends and share Radiocarbon dating (also referred to as carbon dating or carbon - 14 dating) is a method for determining the age of an object containing organic material by

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We found that cells produced more calcium carbonate under future ocean conditions, but had the same amount of organic carbon as in present conditions.

But apparently not; in a new study by the Texas Water Development Board (TWDB), investigators found that water from green roofs had high levels of dissolved organic carbon.

The scientists found that almost 70 % of the organic carbon initially present in the weathered bedrock had been oxidised by soil microbes, to put, for every square kilometre they measured, somewhere between six and 18 tonnes of carbon back into the atmosphere.

Zhang et al. [2017] conducted lab experiments of leaching and found dissolved organic carbon (DOC) export of nearly five per cent of the carbon stored in surface soils.

Furthermore, the team found that land that had been cultivated using conservation tillage since the 1980s had been able to recover more than a fourth of the soil organic carbon it had lost.