Sentences with phrase «iron deposition»

However, addressing what you have specified: 1) The 25 % falloff in ocean iron deposition is a NASA documented fact.

It is based on the concept that iron is a critical nutrient for primary ocean productivity, and oceanic iron deposition has been in decline for decades.

Reductions in NPP in the South Pacific were associated with a 35 percent decline in atmospheric iron deposition.

Its hepatoprotective properties and cell membrane stabilizing activity make it an effective treatment for kidney diseases, and some findings show that it may have a more protective effect than deferoxamine against kidney iron deposition at a dose of 200 mg per kg.

The Gut Metagenome Changes in Parallel to Waist Circumference, Brain Iron Deposition and Cognitive Function JCEM June 7, 2017 Gerard Blasco, Jose Maria Moreno - Navarrete, Mireia Rivero, Vicente Perez - Brocal, Josep Garre - Olmo, Josep Puig, Pepus Daunis - i - Estadella, Carles Biarnes, Jordi Gich, Fernando Fernandez - Aranda, Angel Alberich - Bayarri, Andres Moya, Salvador Pedraza, Wifredo Ricart, Miguel Lopez, Manuel Portero - Otin, and Jose - Manuel Fernandez - Real Microbiota perturbations seem to exert modulatory effects on emotional behavior, stress - and pain - modulation systems in adult animals; however, limited information is available in humans...

Washington K. Hepatic iron deposition: new observations in non-HFE hemochromatosis [editorial].

This grant funds the first study of its kind, «Investigating cognitive fatigue and brain iron deposition in basal ganglia in multiple sclerosis.»

Not exact matches

Unlike gadolinium, which appears as a white signal, iron oxide is difficult to distinguished from air, hemorrhage, calcification, metal deposition, and blood clots.

This research not only provides the first clear evidence that microorganisms were directly involved in the deposition of Earth's oldest iron formations; it also indicates that large populations of oxygen - producing cyanobacteria were at work in the shallow areas of the ancient oceans, while deeper water still reached by the light (the photic zone) tended to be populated by anoxyenic or micro-aerophilic iron - oxidizing bacteria which formed the iron deposits.

One to three layers of graphene are formed on the nickel foam in a chemical vapor deposition (CVD) furnace, and the iron, manganese and phosphorus are added on top of that, also via CVD and from a single precursor.

Possible mechanisms include (iv) fertilization of phytoplankton growth in the Southern Ocean by increased deposition of iron - containing dust from the atmosphere after being carried by winds from colder, drier continental areas, and a subsequent redistribution of limiting nutrients; (v) an increase in the whole ocean nutrient content (e.g., through input of material exposed on shelves or nitrogen fixation); and (vi) an increase in the ratio between carbon and other nutrients assimilated in organic material, resulting in a higher carbon export per unit of limiting nutrient exported.

In the Ross Sea, bioavailable iron enters the area through snow melt and dust deposition.

This suggests that the associated changes in North Atlantic Deep Water formation and in the large - scale deposition of wind - borne iron in the Southern Ocean had limited impact on CO2.

This Aeolian dust contains 3 — 5 % iron and its deposition has fallen nearly 25 % in recent decades.

Here we took a different approach by seeking and applying dust deposition observations from hotspots for dust radiative and iron fertilization forcing: NH subtropical latitudes and the Southern Ocean.

We use the above dust deposition − temperature relationships to derive climate dependencies of dust radiative and iron fertilization forcing under the assumption that both forcings vary in proportion to the dust deposition, and can therefore be expressed in the same form as Eq.

Deposition of mineral dust plays an important role in the biogeochemical cycle of the oceans, by providing the nutrient iron, which affects ocean biogeochemistry with feedbacks to climate and dust production (Jickells et al., 2005; Section 7.3.4.4).

2) That Planktos will be mitigating that shortfall by replenishing marine iron micronutrients in concentrations similar to dust storm deposition is also a fact.

The climate feedbacks involved with these changes, which are key in understanding the climate system as a whole, include: + the importance of aerosol absorption on climate + the impact of aerosol deposition which affects biology and, hence, emissions of aerosols and aerosol precursors via organic nitrogen, organic phosphorus and iron fertilization + the importance of land use and land use changes on natural and anthropogenic aerosol sources + the SOA sources and impact on climate, with special attention on the impact human activities have on natural SOA formation In order to quantitatively answer such questions I perform simulations of the past, present and future atmospheres, and make comparisons with measurements and remote sensing data, all of which help understand, evaluate and improve the model's parameterizations and performance, and our understanding of the Earth system.

Using H2O as a reducing agent in this process led to the large - scale deposition of banded - iron formations, or BIFs, a source of 90 percent of present - day iron ores.

This deposition process, in which oxygen was used up as fast as it was produced, continued for millions of years until most of the iron dissolved in the oceans was precipitated.

The recent demonstration that an inadequate supply of iron limits primary production in this region supports earlier speculation that, in the past, fluctuations in the atmospheric deposition of iron - bearing dust may have driven large changes in productivity.