Sentences with phrase «as nucleation»

A great many of these events begin at temperature ranges far above the freezing point (though temperatures on the ground can drop precipitously as the nucleation process unfolds).

Bacteria in the atmosphere, for instance, work as nucleation sites for water droplets.

In large systems such a spontaneous transition is thought to occur due to a cosmic ray or some other local radiation that entered the sample to act as a nucleation point, or it is triggered by vibration.

Then, one of four other metals (nickel, cobalt, copper, or iron) acts as a scaffold, known as a nucleation site, on which the nanofiber continues to grow.

So that you know, these are little combustible particles in soot etcetera, into the atmosphere and these particles act as nucleation for clouds and the clouds are reflective.

These lower the freezing point of their body fluids as winter approaches by synthesising antifreeze molecules and getting rid of anything that could act as a nucleation site for ice crystals to form around, such as gut contents and bacteria.

This formation of new particles is known as nucleation.

Not exact matches

As the atoms move around in the supercooled state in search for nucleation sites, the temperature continues to drop.

Just as the same genes that allow Deinococcus to thrive on the ground may give it the ability to survive at high altitudes, the ice - nucleation gene may originally have given syringae and bacteria like it an advantage other than rainmaking.

Even as the importance of biological ice nucleation was being recognized by agricultural scientists, it still wasn't embraced by atmospheric scientists, who stuck by the traditional view that soot, or sea salt, or some as - yet - unidentified mineral in dust was seeding ice in clouds.

Here, the authors show that as the single crystal sample heats up, the alloy's structure changes as a result of the homogeneous nucleation of several grains of poly - crystalline structure, towards an austenitic phase.

Ice nucleation might have emerged as an ecological handshake between bacteria and the plants they lived on.

It's well known that particles in the atmosphere such as mineral dust, pollen, heavy metals and even bacteria can act as seeds for the nucleation of ice crystals.

«Studying the formation and evolution of jets in metals and, more generally, how materials at extreme conditions respond using X-ray phase contrast imaging is relevant to such things as meteorite impacts, the performance of explosives and detonators, understanding crack nucleation and propagation in materials, and the development of new materials with tailored properties whose applications include automotive and airplane components, lighter and more impact - resistant armor, and debris shields in space, to name a few.»

The structure and depth of the indicated minimum remain unknown, as well as the height of the activation barrier for nucleation.

The team found that this ice nucleation protein, inaZ, acts as a mold for ice crystals.

The research team - composed of post-doctoral student Ludovic Huguet; Earth, Environmental, and Planetary Sciences professors James Van Orman and Steven Hauck II; and Materials Science and Engineering Professor Matthew Willard - refer to this enigma as the «inner - core nucleation paradox.»

Scientists are working to understand their underlying processes, such as which particle surface properties encourage or discourage ice formation, called nucleation, so they can accurately simulate how, where, and when clouds are formed.

As the lower atmosphere warms what will happen to the mean altitude of nucleation and condensation?

Rasmus notes that other factors besides ionization seemed at least as important in influencing the nucleation rate.

As Rasmus also mentioned, ions play a role in atmospheric nucleation, but this role is not as important as some make it out to bAs Rasmus also mentioned, ions play a role in atmospheric nucleation, but this role is not as important as some make it out to bas important as some make it out to bas some make it out to be.

More trees mean more moisture cycling, as well as more cloud and droplet nucleation from leaf emissions such as terpenes and bacteria.

As far as the webbly is concerned — no one is suggesting that bosons or fermions play any role in real world droplet nucleation rates in a supersaturated atmospherAs far as the webbly is concerned — no one is suggesting that bosons or fermions play any role in real world droplet nucleation rates in a supersaturated atmospheras the webbly is concerned — no one is suggesting that bosons or fermions play any role in real world droplet nucleation rates in a supersaturated atmosphere.

It's looking more and more like most climate change can be pegged to changes in solar output, either directly through additional warming or indirectly as decreases in solar output allow more cosmic rays to reach the atmosphere, causing increased cloud nucleation and therefore increasing the earth's albedo and reflecting more solar radiation.

«Ion - induced nucleation [cosmic ray action] will manifest itself as a steady production of new particles [molecular clusters] that is difficult to isolate in atmospheric observations because of other sources of variability but is nevertheless taking place and could be quite large when averaged globally over the troposphere [the lower atmosphere].»

But as you may know, I am talking about the rising leading edges of AOT plots which relate to early stage cloud formation (i.e. nucleation — presumably via DMS, isoprenes etc emitting by cyanobacterial blooming).

«Because the primary source of ions in the global troposphere is galactic cosmic rays (GCRs), their role in atmospheric nucleation is of considerable interest as a possible physical mechanism for climate variability caused by the Sun.»

If the nucleation process is started at far above freezing temperatures, then the temps can fall to near freezing or well below as the process continues.

If Svensmark and other researchers are correct the switch between these states could be due to weakness in the solar wind leading to more galactic cosmic rays entering the atmosphere and increasing the nucleation for cloud droplets (just as in a «cloud chamber»).

«In addition we demonstrate that the binary H2SO4 — H2O nucleation scheme, as it is usually considered in modeling studies, underestimates by 7 to 8 orders of magnitude the observed particle formation rate and, therefore, should not be applied in tropospheric conditions.»

Patented processes of «chemical ice nucleation for weather modification» (a primary aspect of climate engineering operations) will likely cause considerable surface icing scenarios as these materials reach ground level.

Even with the unimaginably extensive sea surface chemical ice nucleation onslaught by the geoengineers, the Arctic sea ice volumes have continued to plummet as shown in the graph above.

The development of clouds in such a fashion, which occurs only in a controlled laboratory environment, is referred to as homogeneous nucleation.

My point, Max, was that the CLOUD experiment will tell us something about the nucleation phenomenon, but will not be a realistic test of its quantitative significance in clouds as they exist in our atmosphere.

As Fred has noted above, CERN CLOUD could provide support for the role of ionizing radiation in aerosol nucleation, but it won't change that assessment.

The iron sun theory is of course something not even remotely connected with cloud nucleation - http://www.spacedaily.com/news/iron-02a.html — it is as stupidly irrelevant as anything from pig iron headed sou.

As for the generalization of classical nucleation theory — about which he has not the slightest clue.

The underlying mechanism is that charged aerosols are more effective than neutral aerosols as ice nuclei (i.e., electrofreezing) and that the enhanced collections of charged evaporation nuclei by supercooled droplets enhance the production of ice by contact ice nucleation (i.e., electroscavenging).

This lowers the probability that the particles will survive to CCN sizes, and as a result it reduces the sensitivity of CCN concentrations to changes in the nucleation rate (Pierce & Adams 2009).

Their freezing can either be triggered by aerosol particles acting as a so - called ice nuclei (IN), or occur homogeneously (without IN) at about − 38 ◦ C The goal of many laboratory studies was and is to assess the ice nucleation ability of selected aerosol particles of a... http://search.proquest.com/openview/421dd0783b387a8e030902328dcc6f23/1.pdf?pq-origsite=gscholar&cbl=105744

He ignores the possibility that decadal variability may be caused by external forcing such as cosmic rays which are known to cause increased rates of aerosol nucleation.

The weather makers are desperately trying to engineer winter with unimaginably extensive atmospheric manipulation / geoengineering processes (which includes chemical and / or biological ice nucleation agents as a primary element).

With most temperatures on the ground still at well above freezing This is a result of chemical ice nucleation elements that are being utilized on an unimaginable scale as the climate engineers try desperately to turn warmth into winter.

As this flow of moisture migrates to the North East, temperatures of over 60 degrees are visible only a short distance from the chemically cooled ice nucleation zones.

The effect of this chemical ice nucleation process can be clearly seen as cells of precipitation suddenty «flash out» to frozen in spite of the far above freezing temperature moisture.