Sentences with phrase «very small concentrations»

Although I can not know this, I suspect that many chemists first learning of the GHG theory of global warming started from a base of scepticism, from the knowledge that very small concentrations need extraordinary care and interpretation.

Effect of very small concentrations of insulin on forearm metabolism.

For instance, very small concentrations of GBPs might either directly or indirectly act on the insulin - producing cells to regulate ilp2 mRNA expression and peripheral tissues to regulate AKT expression.

He is part of a team cataloging the microbial diversity of U.S. air — in which the scientists have picked up, among other things, very small concentrations of bacteria related to anthrax.

In tests, the researchers dispersed nanodiamonds in mineral oil and found that a very small concentration — one - tenth of a percent by weight — raised the thermal conductivity of the oil by 70 percent at 373 kelvins (about 211 degrees Fahrenheit).

They are both present in very small concentration.

Not exact matches

When concentrations of very small particles of wood smoke pollution (smaller than 2.5 microns, a.k.a. «PM 2.5») reach above 10 micrograms per cubic meter, researchers find a 7 percent increase in asthma inhaler refills.

Bordeaux Reds: The red wines have an intense color, very high concentration of anthocyanins, a nose of small black berries (blackcurrants, mulberries, blueberries), powerful and structured length, round, delicate tannins.

He had a concentration issue as he would normally mess up against small teams and play very well against big teams.

It is not surprising considering that the small country has a very high concentration of major pharmaceutical companies: Genzyme, Pfizer, Amgen, GlaxoSmithKline, Merck Sharp & Dohme (part of the US company Merck & Co.), Boston Scientific, Wyeth, Johson & Johnson, Abbott, and others have substantial operations in Ireland.

It's very difficult to detect these nanomaterials in the environment since the concentrations are so low and the particles so small.

When particulate concentrations rose even to mild levels — those classified as a «moderate health concern for a very small number of people» by EPA standards — the risk of stroke rose by 34 percent within a day of exposure.

Average concentrations of gold in the leaves are much higher than normal, but individual particles of the metal are still very small, few, and far between.

This combination - a high concentration of individuals in a only few small sites - makes the possibility of habitat destruction in Mexico very serious.

«When the concentrations of fine [very small] particulates in the air went up, deaths went up,» Schwartz reports.

Some of them are very small deviations, such as slightly different chemical compositions or slightly different concentrations of different kinds of crystalline defects.

True colloidal silver with a sufficient concentration of particles does not look like water because silver particles — even very small particles — block light from passing through, making the liquid appear darker.

Due to the very low concentration of ionic silver and small particle size, true silver colloids do not cause argyria, a condition that causes the skin to turn blue - gray.

As detailed by Dr. Sniderman, «Two people can have the same overall LDL concentration, but very different levels of risk depending on whether they have a lot of small, dense LDL particles or a small number of large and fluffy particles.»

Even though the concentration of DHA in breast milk is very small, the brains of breast - fed infants accumulate fifty percent more DHA than those of infants fed formulas devoid of the fatty acid.43 When a mother improves her DHA status by supplementing with cod liver oil during pregnancy and the first three months of lactation, 44 it improves her child's IQ at four years of age, although the effect is drowned out by other factors as the child grows older.45

Fatty acids containing carbon - carbon double bonds (monounsaturated, such as the main ones in olive oil, or polyunsaturated) do produce small quantities of trans fatty acids when heated strongly, but it's in very small amounts (here, here, here, here) The process that really increases the trans fatty acid concentration is partial hydrogenation, an industrial process that's used to raise the melting temperature of polyunsaturated oils.

Most of the contaminants in public water supplies exist at such small concentrations that most people would have to ingest very large quantities for health problems to occur.

There are counting games for very small babies, songs to help children learn new words, devices to focus the child's concentration.

We have many people inquire about natural oils especially in cats — I have many Vets also that have inquired about our various ingredients including NEEM oil — and after we explain that less then 1 / 100th of the formulation is made up of any of our essential oils they are very pleased with the concentration — especially when in our recommended usage less then 1 / 3rd of a teaspoon is recommended in very small breed dogs and cats — now take 1 / 100th of that and when it is used daily for the first 30 days on serious conditions with a topical application, and then the maintenance phase is one application every 3 to 4 days — the actual amount of any of our essential oils is very very small — and to add to the safety issue as I mentioned earlier it is a topical application and yes some is ingested — but with approximately 700,000 bottles used — and not one reported case of injury or death we have a fantastic record when compared to anesthesia scaling — according to the statistics reported in a very large study of 2,500 dogs — going under anesthesia — if the same 700,000 using our product chose anesthesia scaling instead according to the study — 2,358 would have died and 12 % or another 60,000 would have been injured!!!

There are many customisable options including selecting the amount of puzzle pieces from a small and quick jigsaw puzzle of 28 pieces through to 60, 112, 252 or a large and far more thought provoking puzzle of 510 pieces, although 510 piece puzzles are a real test of endurance and concentration as they can take longer than 2 hours to complete which is where a very user friendly mid-puzzle save comes into play that enables players to save their progress and exit at anytime.

So even doubling the concentration of atmospheric carbon dioxide would only result in a very small theoretical rise in temperature, since the largest amount of the greenhouse effect caused by atmospheric CO2 has already occurred with the first 20 ppmv concentration.

In this context a 30 % change is very small, as you have to increase the hydrogen ion (H +) concentration by a factor of 10 to get a decrease in pH of 1.

Modern human civilization has developed and thrived in the last 10,000 years during a very narrow window of temperature and CO2 concentrations, a very small fluctuation around 280 ppm.

Variations during the year, and from one location to another, make only a very small difference in localized CO2 concentrations, thus to the Greenhouse effect as well as other forcings of the ecosystem.

Because of its high concentration, water vapour absorbs to extinction first generation photons (hv) in the main waveband in 120m of traverse (as many contributors have pointed out) and CO2 absorbs very little, due to its small concentration.

as for carbon dioxide and nitrogen gas and oxygen gas and the collisions you mention — the concentration by volume of carbon dioxide in the atmosphere is very small — the most significant effects in the bottom layer of the atmosphere (troposphere) will surely be the heat trapping effect of increased carbon dioxide combined with the pressure - height changes of concentrations of carbon dioxide due to the warming effect.

There is a big concentration of power in a group of individuals and what gets resource and focus very much depends on this small group.

What is more, in the small print describing the assumptions of the «representative concentration pathways», it admits that the top of the range will only be reached if sensitivity to carbon dioxide is high (which is doubtful); if world population growth re-accelerates (which is unlikely); if carbon dioxide absorption by the oceans slows down (which is improbable); and if the world economy goes in a very odd direction, giving up gas but increasing coal use tenfold (which is implausible).

Many fluorinated gases have very high global warming potentials (GWPs) relative to other greenhouse gases, so small atmospheric concentrations can have proportionately large effects on global temperatures.

In fact, only a very small portion of the corn ethanol that is produced is used to make E85 — the remainder is used as a fuel additive, in concentrations up to 10 % of the gasoline.

Doesn't this mean that the amount energy absorbed is very, very small for a given increase in concentration for these bands?