Sentences with phrase «organic particles in»

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.

Bacteria and viruses present in either human faeces or gull droppings tend to attach themselves to organic particles in the water — and the mussels filter them from the water as they feed.

Not exact matches

For all entities, elementary particles, atoms, molecules, and so on, are organic unities, each integrating into itself organic unities smaller in size with the differences in size being unproblematical between each level, above or below.11

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..

In order to forestall objections to his social - organic theory, Hartshorne states that an electron or some similar ultimate particle may still be an organism even though it has no parts.

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).

BI's primary milling facility in Reno, NV and its particle engineering facility in Islandia, NY are both QAI organic certified.

Our particle engineering facility houses roller compactors and wet granulators, making us the only organic granulation facility in the nation.

Adding compost or other organic material such as aged manure will bind sand particles together, decreasing erosion and assisting in water retention.

Such a crust could have formed as energetic particles known as cosmic rays bombarded the object over its lifetime, creating an ice - free surface rich in organic compounds.

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.

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.

In the atmosphere today, particle formation is dominated almost everywhere by mechanisms where at least three chemical components must come together: apart from the two basic substances, i.e. sulphuric acid and water, these are either ammonia or specific organic compounds such as oxidation products from terpenes.

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 removeIn 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 removein the water can grow and consume organic material that remains after the largest particles have been removed.

Additionally, other research, including from Donahue's lab, has suggested that such oxidized organics might take part in nucleation — both in new particle formation and in their subsequent growth.

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.

But unexpectedly in this case, «we didn't see improvement in soil aggregate stability even though soil organic carbon concentration increased,» Blanco says, noting that soil particles usually bind together more strongly in aggregates as soil organic carbon concentrations rise.

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.

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.

Only at Titan, the evaporated material is thought to be organic chemicals originally from Titan's haze particles that once dissolved in liquid methane.

«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.»

Two important aerosol species, sulfate and organic particles, have large natural biogenic sources that depend in a highly complex fashion on environmental and ecological parameters and therefore are prone to influence by global change.

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

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.

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.

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.

, Kilcoyne, A.L.D., Moffet, R.C., Weigand, M., Martin, S.T., Pöschl, U., and Andreae, M.O.: Biogenic potassium salt particles as seeds for secondary organic aerosol in the Amazon, Science, 337, 1075 - 1078, 2012.

Yet these particles, called secondary organic aerosols, are a dominant atmospheric component in most megacity locations.

Detecting biogenic organic compounds in the atmosphere using land data and chemistry models helps describe atmospheric particle formation and air quality

Scientists discover how organic emissions from trees transform into climate - affecting particles in the atmosphere

«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.

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.

CLOUD shows that organic vapours emitted by trees produce abundant aerosol particles in the atmosphere in the absence of sulphuric acid.

These have garnered more than 600 citations advancing our understanding of what the research field calls secondary organic aerosols — or SOA for short — and how the carbon - containing aerosol particles mix in the atmosphere.

When isoprene is in the presence of human - made sulfate particles it transforms into atmospheric organic aerosol particles.

«In our experiments, we dosed particles with varying properties into a complex microbial community that is involved in purifying wastewater through the breakdown of ammonia and organic matteIn our experiments, we dosed particles with varying properties into a complex microbial community that is involved in purifying wastewater through the breakdown of ammonia and organic mattein purifying wastewater through the breakdown of ammonia and organic matter.

Secondary organic aerosols, or SOAs, are created when hydrocarbon gases, given off by everything from pine trees to snow blowers, undergo a series of chemical reactions in the atmosphere to produce particles.

The organic aerosol particles that coat the toxic hitchhikers are wafted into the atmosphere through emissions from trees (like those that produce the smell of pine trees), and burning biomass and fossil fuel to form a semi-solid sap - like casing surrounding and protecting the particle's payload from breaking down in the atmosphere.

Certain particle compounds may directly generate ROS in vivo because of their surface chemistry (eg, metals, organic compounds, and semiquinones) or after bioactivation by cytochrome P450 systems (eg, polycyclic aromatic hydrocarbon conversion to quinones).6, 290 a, 290 b A particle surface or anions present on otherwise more inert particles may disrupt iron homeostasis in the lung and thereby also generate ROS via Fenton reactions.291 Other PM constituents may do so indirectly by the upregulation of endogenous cellular sources (eg, nicotinamide adenine dinucleotide phosphate [NADPH]-RRB- oxidase) 292,293 or by perturbing organelle function (eg, mitochondria) by taken - up PM components.261 Particle stimulation of irritant and afferent ANS fibers may also play a role in local and systemic oxidative stress formation.294 Given the rich antioxidant defenses in the lung fluid, secondarily generated oxidization products of endogenous molecules (eg, oxidized phospholipids, proteins) or a reduction in endogenous antioxidants per se may be responsible at least in part for the state of oxidative stress in the lungs (along with instigating the subsequent cellular responses) rather than ROS derived directly from PM and its constparticle compounds may directly generate ROS in vivo because of their surface chemistry (eg, metals, organic compounds, and semiquinones) or after bioactivation by cytochrome P450 systems (eg, polycyclic aromatic hydrocarbon conversion to quinones).6, 290 a, 290 b A particle surface or anions present on otherwise more inert particles may disrupt iron homeostasis in the lung and thereby also generate ROS via Fenton reactions.291 Other PM constituents may do so indirectly by the upregulation of endogenous cellular sources (eg, nicotinamide adenine dinucleotide phosphate [NADPH]-RRB- oxidase) 292,293 or by perturbing organelle function (eg, mitochondria) by taken - up PM components.261 Particle stimulation of irritant and afferent ANS fibers may also play a role in local and systemic oxidative stress formation.294 Given the rich antioxidant defenses in the lung fluid, secondarily generated oxidization products of endogenous molecules (eg, oxidized phospholipids, proteins) or a reduction in endogenous antioxidants per se may be responsible at least in part for the state of oxidative stress in the lungs (along with instigating the subsequent cellular responses) rather than ROS derived directly from PM and its constparticle surface or anions present on otherwise more inert particles may disrupt iron homeostasis in the lung and thereby also generate ROS via Fenton reactions.291 Other PM constituents may do so indirectly by the upregulation of endogenous cellular sources (eg, nicotinamide adenine dinucleotide phosphate [NADPH]-RRB- oxidase) 292,293 or by perturbing organelle function (eg, mitochondria) by taken - up PM components.261 Particle stimulation of irritant and afferent ANS fibers may also play a role in local and systemic oxidative stress formation.294 Given the rich antioxidant defenses in the lung fluid, secondarily generated oxidization products of endogenous molecules (eg, oxidized phospholipids, proteins) or a reduction in endogenous antioxidants per se may be responsible at least in part for the state of oxidative stress in the lungs (along with instigating the subsequent cellular responses) rather than ROS derived directly from PM and its constParticle stimulation of irritant and afferent ANS fibers may also play a role in local and systemic oxidative stress formation.294 Given the rich antioxidant defenses in the lung fluid, secondarily generated oxidization products of endogenous molecules (eg, oxidized phospholipids, proteins) or a reduction in endogenous antioxidants per se may be responsible at least in part for the state of oxidative stress in the lungs (along with instigating the subsequent cellular responses) rather than ROS derived directly from PM and its constituents.

Pym made a once - in - a-lifetime discovery called «The Pym Particle,» which allows one to shrink the size of organic matter without sacrificing density or strength.

MISR can provide some discrimination in special cases (picking out dust via a retrieval of non-spherical particles, or using the single scattering albedo to distinguish black carbon), but overall the estimates mix up sulphates, dust, black carbon, sea salt, nitrates and secondary organics.

The answer, of course, is that Pieter is talking about carbon particles (aerosols, often called black carbon) and the post is talking about carbon atoms in principally CO2, but also methane and organic volatile moleclues.