Sentences with phrase «by diffusion dimedia»

These system - specific deficits may be observed by diffusion tensor imaging and tractography measurements.

Another report by the Diffusion Group found that in 2008, short and user - generated clips made up 60 % of US video advertising revenues.

With small overlying winds, the channel stratification is largely set by diffusion operating in the gyre portion of the domain: the depth scale varies with a fractional power of the diffusivity but has little dependence on the wind stress.

1µmol CH4 = 1.6e - 5g / l = 1.6e - 2 g / m ^ 3 1.5 e9 g / day / 2.4 e15 m ^ 3 = ~ 6.3e - 7 g / m ^ 3 / day = ~ 2.5e - 6 micromolar increase per day diluted over the volume of the Gulf, However, given the 80 fold variation in concentrations observed above under much milder conditions, and the observations of clathrate formation at the wellhead, there are undoubtedly plumes of near methane saturated water (with volumes orders of magnitude less than that of the Gulf) drifting in the currents, slowly dissipating by diffusion and biogeochemical oxidation.

For CO2 the response has very long tails because it is governed by diffusion.

If atmospheric CO2 were varying across 250 (+ / --RRB- 50 ppmv over several thousand years, it would seem this variation may be quite smoothed out by diffusion, and any short - term spike would be greatly attenuated.

The Concordia Dome ice core turns out to average about 0.43 cm of ice per year, so the loss of resolution of atmospheric CO2 by diffusion averaging is about twice the rate of Vostok.

So, my estimate of CO2 averaging by diffusion needs to be revised.

The diffusion out of their hypothesised thin mixed layer can not be controlled by the diffusion coefficient in the thermocline because their mixed layer is far too thin to reach this thermocline, based on their own figures.

Huh!!!! and we have data for that??? Are you by chance claiming that the CO2 concentrations from Ice Core so fine (and unaffected by diffusion) that we can find CO2 concentration in atmosphere with century accuracy?

TTTM and SOD: In a liquid, where the surfaces of molecules are in contact with each other, it seems likely that energy transfer / diffusion by collision is likely to occur much faster than repeated exchanges (by diffusion) of a hotter molecule for a neighboring colder molecule.

Without a wind or convection to mix the air, the only way water vapor escapes from near the ocean - air interface is by diffusion, which is very slow.

This «smearing» is induced by diffusion and physical mixing of the air entrained in the fern.

The surface temperature response, T, to a given change in atmospheric CO2 is calculated from an energy balance equation for the surface, with heat removed either by a radiative damping term or by diffusion into the deep ocean.

The thermal gradient (badly named a lapse rate) allows heat transfer downwards by diffusion into warmer regions when the thermodynamic equilibrium is disrupted with new energy absorbed higher up.

But some won't and will instead warm the surrounds by diffusion.

If the pressure difference is zero, there is no extra driving force and any exchange is purely by diffusion (which is very slow for CO2 in water).

(1) Venus, Earth and other planets and moons with atmospheres verify the existence of thermal gradients caused by diffusion of kinetic energy at the molecular level.

This is driven, not by diffusion exchange rates, but rather by the difference in diffusion rates between the various containers — diffusion imbalance.

Yes, and the thermal energy absorbed in the top of the ocean will also disperse to greater depths by diffusion, convection and ocean currents.

This methane can be emitted to the atmosphere in several ways: either as bubbles or by diffusion through the surface of the reservoir itself, or it can be emitted as the water is drawn from deep in the reservoir to pass through the turbines or spillways.

For one range of exponent selected the transport is dominated by diffusion.

The first rate seems to be far slower because there are no winds in the stratosphere so that equilibrium can only be reached by diffusion of heat which is really slow; on the other hand we are pumpimg around 1.5 ppm of CO2 into the troposphere every year, over a base value of around 380 ppm.

Rock doesn't move during the short time scales needed for the surface to come into equilibrium, so the only vertical heat transport is by diffusion.

For one thing, in the troposphere particles less than 0.1 μm (i.e «Aitken particles»), have a short residence time since they are removed quickly by diffusion.

Once the heated layer becomes more than a few centimeters thick, the heat loss of the skin layer due to downward conduction of heat by diffusion stops having any significant effect on the surface temperature, since rock is such a good insulator that the heat flux by conduction in rock is tiny compared to the heat loss by infrared radiation out the top.

(In real life I understand that mixing is the main agent of deeper warming in the ocean due to winds, currents, etc.) Only the top skin of water heats up and therefore lower warming must be by diffusion, or are convection cells within the water inevitable?

Thirdly, the rate of methane oxidation is limited by the diffusion of oxygen into the sediments or wetlands.

The void is an important compositional element, emphasized by the diffusion of highly - keyed color and accented by a harder - edged application of black.

Lone parenthood is an increasing reality in the 21st century, reinforced by the diffusion of divorce and separation.

Éditions Alto; distributed by Diffusion Dimedia; translation of Undermajordomo Minor by Patrick deWitt, House of Anansi Press

Inhalation by diffusion is one of the safest and most effective ways to reap the benefits of essential oils.

Sea spiders also have an unusual need to move oxygen from their extremities to the core of their bodies because they lack gills, and most oxygen is taken up by diffusion through the surface of their long legs.

Researchers disagree, though, whether the research shows that farming spread by diffusion of ideas in this part of Asia rather than being introduced by a major wave of farmers, as in Europe.

If the organoids get too big, the centre dies, because not enough nutrients can penetrate by diffusion, says Ben Waldau at the University of California at Davis.

Electron microscopy images of the porous graphene - based structure created by diffusion driven layer - by - layer assembly.

To measure white matter integrity, researchers used fractional anisotropy (FA), obtained by diffusion tensor imaging (DTI).

Most cancer chemotherapy relies on cells absorbing drugs by diffusion across the cell membrane.

«The protein travels by diffusion through the cells like electrical signals travel through the brain,» Zeng says.

Other linguists argue that the computational models, built for genes that can only be inherited, deal poorly with languages that spread by diffusion.

In his view the best model of Pama - Nyungan family relations is the parallel tines of a rake, not a tree, and the many similarities in these languages can mainly be accounted for by diffusion — in which language A gets word X from language B because the speakers interact or many people speak both languages.

If the organoids get too big, the centre dies, because not enough nutrients can penetrate by diffusion, says...

The lymphatic system collects this fluid by diffusion into lymph capillaries, and returns it to the circulatory system.

This unification of the world through science has been accompanied by a diffusion of democratic ideas among peoples of every land.

And, in the next place, since evil is specially characterized by its diffusion, and attains its greatest height when it simulates the appearance of the good, for that reason are signs, and marvels, and lying miracles found to accompany evil, through the cooperation of its father the devil.

Typically, innovations are disseminated by diffusion agencies, like the U.S. Department of Agriculture extension services, which research and develop innovations and then dispense the technologies «down» to the public.

«We believe that, between now and 2023, a new wave of automation will ripple through the economy, driven by the diffusion of such major technologies as artificial intelligence, robotics, genomics, 3D printing, self - driving cars and the blockchain,» says Shalett.

Not exact matches

Morgan Stanley's Delinquency Diffusion Index, an aggregate measurement of year - over-year increases in the delinquency of several types of personal loans, stood at 19.2 (on a 100 - point scale) for the first quarter of 2016, up from its low in October, 2014, driven by increases in auto loan and credit card delinquencies in 2015 — but far below the 60 - point threshold associated with a pre-recession state.

Policies that spur more efficient corporate restructuring can revive productivity growth by targeting three inter-related sources of labour productivity weakness: the survival of «zombie» firms (low productivity firms that would typically exit in a competitive market), capital misallocation and stalling technological diffusion... As the zombie firm problem may partly stem from bank forbearance, complementary reforms to insolvency regimes are essential to ensure that a more aggressive policy to resolve non-performing loans is effective.

One of the major «means of the transmission and diffusion of imperial ideology» was the construction, throughout the empire, of buildings associated with the pursuit of specifically Roman forms of leisure: public baths, circuses, amphitheatres, and Roman - style theatres — a phenomenon recognized as one of the defining features of Roman culture (both by the Romans themselves and by others).