Sentences with phrase «water at low concentration»

It is particularly useful for its ability to bind water at low concentration and form a web - like gel.

Not exact matches

For example, I use melanzane alla Parmigiana [eggplant parmesan] to explain osmosis, the process during which solvents like water move through a semipermeable membrane from an area where solutes like salt are at lower concentration to an area where they are at higher concentration.

The detected concentrations are much lower than the Canadian safety limit for cesium levels in drinking water, said John Smith, a research scientist at Canada's Bedford Institute of Oceanography in Dartmouth, Nova Scotia.

The new nose - like device can detect these smells at very low concentrations of just 10ng per liter of water.

«The maximum concentration of (invisible) water vapor which can occur in air decreases to extremely low values at very cold temperatures.

«Our findings of adverse impact in a U.S. sample, particularly in performance - related functioning, gives confidence to the generalizability of findings from our work in Bangladesh, where we also observed a steep drop in intelligence scores in the very low range of water arsenic concentrations,» said Dr. Graziano, who is also professor of Pharmacology at Columbia's College of Physicians and Surgeons.

«Therefore, nanorockets equipped with this valve system are able to move with great efficiency in water, even at low concentrations of fuel.»

These nanomembranes maintained their structure in water or alcohol, at different temperatures, in solutions with high or low pH, or high concentrations of salts, a feat that few cell membranes could accomplish.

The water layer forms slowly at low concentrations, but once in place, it prepares the stage for carbon dioxide to transform quickly.

At the moment, concentrations of plutonium in waters off Fukushima are so low that background radiation from nuclear weapons testing more than 50 years ago makes the signal undetectable with our instruments.

The abundance of some zooplankton (i.e. microscopic crustaceans in the water that eat algae) was lower at higher salt concentrations, but not low enough to cause a bloom of algae.

Coaxed out of the carbon dioxide liquid, even at the low concentrations of 1 water molecule for every 10,000 carbon dioxides, the water forms an extremely thin layer around the target mineral, in this case, anorthite.

In a laboratory experiment at the Alfred Wegener Institute, ephyra larvae of moon jellies developed perfectly at elevated water temperatures, lower pH values and reduced oxygen concentrations.

When temperatures drop, phase separation occurs at a lower water concentration level.

(In the global time average, diffusion of latent heat is in the same direction as sensible heat transport, but latent heat will tend to flow from higher to lower concentrations of water vapor (or equilibrium vapor pressure at the liquid / solid water surface), and regionally / locally, conditions can arise where the latent heat and sensible heat fluxes are oppositely directed.)

But the boiling point of heavy water, as well as heavy oxygen water (H2O ^ 18 rather than H2O ^ 16) are higher than that of normal water, and are found in water vapor in the atmosphere at lower concentrations when the global temperature is low.

However, because atmospheric concentrations of water vapor tend to be at most only a few percent of the amount of air (and usually much lower), they are both often expressed in units of grams of water vapor per kilogram of (moist or dry) air.

At that two and one - half percent concentration in the lower troposphere works out to be 62 water vapor molecules for each carbon dioxide molecule.

It also appears that the water vapor concentration was about 500 ppm, where the actual value in the lower troposphere is about 10,000 ppm (yes, ten thousand ppm, aka 1 % or 62 % RH at 15C / 59F).

Because CO2's ability to absorb IR increases linearly at low concentrations (under 100ppm) a minimal amount even absent most water vapor serves to keep the earth just warm enough to prevent a snowball earth episode most of the time.