Sentences with phrase «of organic particles»

Her research on high - resolution mass spectrometry provided key insights on the relationship between the chemical composition of organic particles in the atmosphere and their possible impacts.

«We are interested in understanding how sunlight affects the chemical composition of organic particles,» said Dr. Adam Bateman, who worked on this and other global change studies.

Not exact matches

You are not just a organic robot destined for the particle recycler but an image of a being far more intelligent, loving, powerful and creative than you could imagine.

The latin «humus» refers to the natural organic compounds that enrich the soil through the biological decomposition of plant and animal particles.

When a seed is planted in the appropriate soil, it is planted in a rich composite of properties such as organic elements, minerals, rock and clay particles, acids, water, etc..

Organic matter does this either by «gluing» soil particles together or creating favorable living conditions for soil microorganisms, which in turn can «glue» soil particles together through production of various organic compounds such as glomalin or by the action of fungal hyphae (Sylvia et al., 2005).

The addition of compost, or other organic material such as aged manure, clusters the small clay particles into lumps that will improve drainage and aeration and will make the soil easier to work and more friable (easily crumbled).

Chemicals such as dyes and pesticides can be especially harmful because they are made up of small and highly soluble organic particles that can not be completely removed during the water treatment process, ultimately ending up in our drinking water.

The vapor accompanying these particles was mostly water but contained trace amounts of simple organic compounds, as well as carbon dioxide and ammonia — all ingredients important for the sustenance and even origin of life.

We found that the particles seen in our images, which were droplets of ocean only hours earlier, bore evidence of large organic molecules and compounds that indicated hydrothermal activity similar to that observed at deep - sea vents on Earth's seafloor.

She decided to study the role that organic particles play in cloud droplet formation, because a large proportion of marine aerosols — which have a significant climate impact — are organics.

Professor Higham said: «Previous radiocarbon dates have often underestimated the age of samples from sites associated with Neanderthals because the organic matter was contaminated with modern particles.

When UV light hits a film of pure titanium dioxide, it breaks down any organic particles found there.

In traditional systems, most of the power goes into pumping air through the water so that bacteria in the water can grow and consume organic material that remains after the largest particles have been removed.

At their core is a network of titanium dioxide (TiO2) particles, each just a couple of tens of nanometers across, coated with a film of organic dye.

The air we breathe is chock - full of organic compounds, tiny liquid or solid particles that come from hundreds of sources including trees, volcanoes, cars, trucks and wood fires.

Xiao used battery powered aerosol monitors to measure indoor concentrations of fine particulate matter, or particles 2.5 micrometers in diameter or smaller, which consists mainly of black carbon and organic carbon.

After confirming that oxidized organics are involved in the formation and growth of particles under atmospheric conditions, the scientists incorporated their findings into a global particle formation model.

A cryoconite granule forms when mineral particles and organic matter, such as bits of algae, are captured by cyanobacteria.

Only further investigation will reveal how much of it makes its way from the river transport to the deep ocean, however, and how it might affect marine life, especially microbial communities that live in and feed on small organic particles.

By comparing the amount of carbon 13 in the inorganic particles with the absence of carbon 13 in the organic matter, scientists can estimate how much oxygen was present in the atmosphere at that time.

After a four - year experiment with two comparable 533 - tonne samples of municipal waste, the leachate from the wet cell contained dissolved organic particles from food, leaves and garden debris totalling 2700 milligrams per litre.

Applying an electric field through the organic circuit to a particular area of the display attracts either the black or white particles, causing that part of the screen to turn either white or black.

These particles were coated in an organic compound designed to disturb the order of the surrounding liquid - crystal molecules and cause them to align themselves perpendicular to the surface of each sphere.

Scientists have paid less attention to soot — particles made of so - called black carbon and organic carbon — because earlier research indicated that their effects were relatively minor.

Because of their aesthetic appeal, organic feel and easily understood structure, Goldberg polyhedra have a surprising number of applications ranging from golf - ball dimple patterns to nuclear - particle detector arrays

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

The study indicates an increased amount of water - soluble organics can coat sulfate particles, suppressing its CCN activity.

«Despite their small size, these interplanetary dust particles may have provided higher quantities and a steadier supply of extraterrestrial organic material to early Earth,» said Michael Callahan of NASA's Goddard Space Flight Center in Greenbelt, Md. «Unfortunately, there have been limited studies examining their organic composition, especially with regards to biologically relevant molecules that may have been important for the origin of life, due to the miniscule size of these samples.»

The study concerns the most abundant class of carbon - based particles in the atmosphere, so - called volatile organic compounds (VOCs).

Volatility is a key property of organic aerosol because it determines the partitioning between the gas and particle phases, and thus the formation of SOA particles.

The dependence likely arises from gas - phase chemistry of organic peroxy radicals, which compete with NOx in reactions, and succeeding particle - phase reactions.

The new findings help to explain a significant part of the organic mass of aerosol particles in the air, which had remained mysterious to the scientists so far.

These bubbles rise to the surface and burst through that layer of organic material, catapulting the soil particles into the air.

They pinpointed the source of an ultrafast and efficient process that spawns several carriers of electrical charge from a single particle of light in organic crystals that are integral to this increasingly popular form of solar cells.

Being able to make particles in a variety of shapes out of any organic material could, for example, allow a person suffering from rheumatoid arthritis or Crohn's disease to get their medication in a single injection rather than via a two - hour intravenous infusion of Remicade.

More than a year of intensive chemical analysis showed that the particles were definitely composed of organic matter from the soil.

The finding implies the fine spray of water vapor, icy particles and simple organic molecules Cassini has observed coming from fractures near the moon's south pole is being fed by this vast liquid water reservoir.

Even in the absence of life, meteorites, comets and interplanetary dust particles should have delivered organics over the past four and a half billion years.

Small, slow - sinking organic particles may play a bigger role than previously thought in the transport of carbon below the surface ocean.

Shiraiwa, M., Pfrang, C., Koop, T., and Pöschl, U.: Kinetic multilayer model of gas - particle interactions in aerosols and clouds (KM - GAP): linking condensation, evaporation and chemical reactions of organics, oxidants and water, Atmospheric Chemistry and Physics, 12, 2777 - 2794, 2012.

They obtained the first experimental determination of the dynamic shape factor of ammonium sulfate, sodium chloride, and particles composed of organic substances, all of which are important atmospheric pollutants.

The specialized instruments onboard the aircraft sampled the plume for aerosol particle size distribution and composition as well as concentrations of pollutant gases such as sulfur dioxide, nitric oxide, nitrogen dioxide, ozone, and volatile organic compounds (VOCs).

My research is focused on the origin of the first solar - system solids, ancient presolar circumstellar dust grains, primitive organic compounds, interplanetary dust particles, and the evolution of asteroidal bodies.

Shiraiwa, M., Ammann, M., Koop, T., and Pöschl, U: Gas uptake and chemical aging of semi-solid organic aerosol particles, Proceedings of the National Academy of Sciences, 108, 11003 - 11008, 2011.

«And, what puzzles researchers working on the biological carbon pump: it is higher than that of non-calcifying phytoplankton and marine snow, the main sinking particles and organic carbon sources to the ocean interior».

Results: Today's climate models regard organic aerosols as static carbon - based molecules, but scientists at Pacific Northwest National Laboratory and the University of California, Irvine showed that the particles are very dynamic.

«Without a way to take it out of the atmosphere quicker, our measurements indicate there can not be much methane being put into the atmosphere by any mechanism, whether biology, geology, or by ultraviolet degradation of organics delivered by the fall of meteorites or interplanetary dust particles.»

The role of low - volatility organic compounds in initial particle growth in the atmosphere.

A large portion of secondary organic aerosols - tiny particles in the air we breathe that contribute to cloud formation and precipitation - arise from a combination of man - made pollution and molecules given off by plant matter.