Sentences with phrase «in biogenic»

Believers in the biogenic creation of oil don't call all those who disagree, «deniers», and then set up wiki sites to list them, with any attendant smears about funding.

The SOA computed variability results from a 7 % increase in biogenic VOC emissions from 1986 to 1990 combined with 8.5 % and 6 % increases in the wet and dry deposition of SOA and leads to about 11.5 % increase in the SOA burden of biogenic origin.

The results of the two seem to be similar on one end of the spectrum, in that biogenic methane -LRB--60 o / oo) requires about 1000 Gt C.

Pork, bacon, sausage, aged meats, fish (especially canned), avocado, fermented foods, coconut products and nuts are high in biogenic amines and may cause symptoms in some individuals.

He joined the Australian Commonwealth Scientific and Industrial Research Organisation in 1983, where he has undertaken research on topics ranging from the ecology of larval fish and deep - sea communities to development of proxies in biogenic carbonates and impacts of climate change on marine populations.

Her research topic focussed on Paleo pH and ocean acidification (anthropogenic) reconstructions based on Boron isotopes and B / Ca ratios in biogenic carbonates (corals and foraminifera).

However, there is little information about the electron transport pathways used in biogenic U (VI) reduction, and even less is known how extracellular U (IV) O2 forms.

Not exact matches

The main body has been divided into sections dealing with the three major biogenic GHGs including a section concerning carbon dioxide (CO2) emissions and photosynthetic absorption and a section that deals with nitrous oxide (N20), and methane (CH4) emissions (and assimilation in some limited cases).

We therefore understand why we are often asked about the use of recycled or biogenic plastics in our production processes.

«They're absolutely not biogenic when seen in Technicolor» under a light microscope, Butterfield says.

Chemists have analyzed potential biogenic compounds in martian meteorites such as ALH - 840001.

Borch, working on an unrelated experiment studying the composition of uranium at mined and unmined sites in Wyoming, surmised that this biogenic (of biological origin), non-crystalline uranium might occur naturally within ore deposits.

Abundance of this biogenic non-crystalline uranium has implications for environmental remediation of mining sites, and for mining practices in general.

They were interested in finding out how human activities have changed the biogenic fluxes of these gases.

The biogenic amines serotonin and octopamine are present in the nematode Caenorhabditis elegans.

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.

«I know of no biogenic mechanism for growing whiskers, and I don't know of any biogenic magnetite that contains screw dislocations,» agrees Peter Buseck, a geochemist at Arizona State University in Tempe.

Researchers have found evidence that near - ground biogenic emissions of organics suppress cloud formation in cool - temperate forests in autumn, providing clues to how global warming will affect cloud formation and the overall climate.

Biogenic fluorescence is mainly known from marine organisms, but is rare in terrestrial vertebrates.

Our studies suggest that direct activation of membrane chloride conductances is a general mechanism of action for biogenic amines in the modulation of C. elegans behavior.

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 results show that biogenic processes forming SOA in general and the recently discovered ELVOC - compounds in particular play an extremely important role in the chemistry of the atmosphere,» explains Prof. Hartmut Herrmann, head of the Department of Atmospheric Chemistry at TROPOS.

On the other hand, β - pinene, myrcene and isoprene, produce much less ELVOC's, which are an important biogenic sources for the formation of particles in the atmosphere,» emphasizes Dr. Torsten Berndt of TROPOS, who was involved in all three publications.

Kirk Smith's reply to Graham Faichney's well - reasoned letter about the place of biogenic methane in the carbon cycle, and hence...

In the experiments, five biogenic organic gases (limonene, α - pinene, β - pinene, myrcene and isoprene) were passed through the laminar flow tube and then examined by a CI - APi - TOF mass spectrometer.

«The structure of biogenic compounds that are emitted into the atmosphere influences how they are oxidized in the air and if they produce vapours that can condensate,» summarizes the leading author Tuija Jokinen of the University of Helsinki, who carried out these studies in Leipzig at TROPOS.

In the «Proceedings of the National Academy of Sciences» (PNAS), the team has now studies how different biogenic compounds produce ELVOC's and how relevant these compounds are for the atmospheric processes.

In order to investigate the formation of the extremely low - volatility organic compounds the team has studied five abundant biogenic organic compounds with different chemical structures.

This biogenic process differs from that employed by methanogens on Earth and their cousins, if any, on Mars in that no water is needed.

, 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.

This change in peak timing is largely the result of increased photochemical production from anthropogenic and biogenic precursors (Monks, 2000, Parrish et al., 2012, 2013).

Latitudinal variations in benthic processes in the abyssal equatorial Pacific: control by biogenic particle flux.

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

Biogenic budgets of particle rain, benthic remineralization and sediment accumulation in the equatorial Pacific.

However, with many of the known CWC reefs projected to be bathed in under - saturated water by the end of the century (Guinotte et al., 2006; Roberts et al., 2006) the accumulated biogenic reef structures will degrade over time, even if living corals persist (Hennige et al., 2015).

Because much of Earth's land mass is covered by plants, there is a large source of these biogenic aerosol particles that need to be accounted for in climate change prediction.

Such fellowships have enabled Antarctic scientists to participate in a range of significant research including using ice cores to determine proxies for the Southern Annular Mode, a molecular study of Antarctic ostracods, and investigating particulate carbon and biogenic silica in sea ice in both the Arctic and Antarctic regions.

These data indicate that under many atmospherically - relevant conditions SOA particles are significantly more viscous and orders of magnitude less volatile than assumed in traditional modeling approaches; SOA formation yields can be significantly higher than previously reported values; and anthropogenic pollution enhance loadings of SOA from biogenic precursors.

It does contain a modicum of truth, however, in that the largest volume of stromatolitic formations was likely formed by biogenic processes involving photosynthetic cyanobacteria.

Before such a remediation system can be designed, researchers need a first - order understanding of biogenic uraninite in ground water.

Biogenic uranite is a form of uranium, produced by bacteria, that is fairly immobile in groundwater.

Primitive: that's how Dr. John Bargar describes the state of knowledge of the reactivity of biogenic uranite in ground water.

These results suggest that biogenic uraninite will have long - term stability in ground water.

Other biogenic amines, such as putrescine, may also be involved in displacing histamine from its mucosal mucine linkage, which results in an increase of free absorbable histamine in circulation.

They reiterate that all of the following foods can precipate digestive symptoms in IBS patients: dairy, foods which are high in FODMAPS (fermentable oligo -, di -, monosaccharides, and polyols), high fat and spicy foods, foods with high levels of biogenic amines, i.e. histamine (such as soy), lectins (present in beans), and preservatives, such as benzoic acid and sulfites.

Clinical symptoms and their provocation by certain foods and beverages appear similar in different diseases, such as food allergy and intolerance of sulfites, histamine, or other biogenic amines (eg, tyramine).

Besides variations in the amount of histamine in food according to storage and maturation, the quantity consumed, the presence of other biogenic amines, and the additional intake of alcohol or DAO - blocking drugs are pivotal factors in the tolerance of the ingested food.

GABA: 200 mg as needed, a naturally occurring chemical in the brain promoting a calm brain and reducing mild stress and anxiety.18 Benson, C., et al. «Biogenic amines and the amino acids gaba and glutamate: relationships with pain and depression.»

I've talked in the past about the biogenic amines, like spermine and cadaverine, that can be formed in decomposing tissues.

Biogenic amines also interact with DAO enzymes in the gut.