Sentences with phrase «even small concentrations»

It's worth noting that H2S is lethal in even small concentrations.

But because the gas does not occur naturally, even small concentrations are a sign that other more common pollutants, such as carbon monoxide and ozone, could be present.

Not exact matches

Even a drug industry consultant, Gary Novack, said it would be ideal to have a smaller drop with a higher concentration of medicine.

Even if it could, the concentration of the acid in the small beads of a teething necklace would be ridiculously small.

Taking supplements during lactation rapidly increases the concentrations of thiamin, riboflavin, and vitamin B - 6 in milk, but increases in vitamin B - 12 levels are small even when high doses are given to the mother for 2 months.

Although this is an extremely small amount, hormones are active at this level, and at even lower concentrations.

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.

The system uses a novel method, relying on an electrochemical process to selectively remove organic contaminants such as pesticides, chemical waste products, and pharmaceuticals, even when these are present in small yet dangerous concentrations.

«Particles of any kind, even much smaller than the wavelength of visible light, will, as a rule, make the sky brighter but at the expense of its purity of color,» Bohren says, noting that the effect is more pronounced when there is a high concentration of large aerosols.

You can set a dial feature for the ppm you want, and you get mostly ionic - silver as opposed to nano - size particulate colloidal silver clumps (agglomerations), but even those will be so small because the SilverGen does not make the clumps large enough that it turns the distilled water yellow, this being due to it's automatic shut off feature for the ppm concentration you select using the dial setting.

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.

Since oil is usually consumed in smaller amounts than solid food, it should be safer, even with higher arsenic concentrations.

Their conclusion: «The results indicate that NaF (fluoride), even in small concentrations, may induce an inflammatory process».

It makes sense, then, that high - vitamin cod liver oil should serve as a safe standalone supply of vitamin A even during the winter, while liver from land animals should either be used during seasons where the supply of UV - B rays from the sun is rich enough to guarantee adequate vitamin D, or in conjunction with vitamin D - rich foods such as lard from pastured pigs, oily fish, shellfish, and egg yolks from pastured chickens, all of which supply smaller but substantial amounts of vitamin D. (For a list of these and other food sources of vitamin D with specific concentrations listed, see Appendix 3.

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

Even the small amount of heat involved in pasteurization decreases the whey protein concentration of milk, but ultra-high temperature (UHT) pasteurization and sterilization cause the worst declines.

This is not a small vehicle, and even with all available electronic safety aids equipped, it takes concentration to maneuver it in tight spaces.

There are small funds set to support independent bookstores in order to even out the concentration of bookstore locations between populous and less - populous areas.

Warm Weather Hazards • Animal toxins — toads, insects, spiders, snakes and scorpions • Blue - green algae in ponds • Citronella candles • Cocoa mulch • Compost piles Fertilizers • Flea products • Outdoor plants and plant bulbs • Swimming - pool treatment supplies • Fly baits containing methomyl • Slug and snail baits containing metaldehyde Medication Common examples of human medications that can be potentially lethal to pets, even in small doses, include: • Pain killers • Cold medicines • Anti-cancer drugs • Antidepressants • Vitamins • Diet Pills Cold Weather Hazards • Antifreeze • Liquid potpourri • Ice melting products • Rat and mouse bait Common Household Hazards • Fabric softener sheets • Mothballs • Post-1982 pennies (due to high concentration of zinc) Holiday Hazards • Christmas tree water (may contain fertilizers and bacteria, which can upset the stomach.

Climate neutralises these small factors, however, so even, say a 0.02 % decrease in CO2 concentration can be easily dealt with in climate models.

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.

Even less reason for «scientists» to mislead the general public by focussing on a small concentration increase in this irrelevant number to justify their use of the disingenuous term «acidification»

Although this century kicked off with the hottest decade on record, 2010 was the hottest year and in 2011 the Arctic may have broken both the summer and the winter melting record, there has still been heat missing: the rise in global temperatures is smaller than what one would expect from the rise in greenhouse gas concentrations, which — despite UNFCCC attempts to tackle climate change since Kyoto 1997 and Copenhagen 2009 — has even accelerated.

Because soil is such a major player in the carbon cycle, even a small change in the amount of carbon it releases can have a big effect on atmospheric carbon concentrations.

However even without any modulating biological effects, the graph suggests a degree of chemical homeostasis where increasing CO2 concentrations have an increasingly smaller effect on ocean pH. For example when CO2 concentrations increase from 0 to 100 ppm, pH rapidly drops from over 11.0 to 8.7.

This means that even a small change in pH can significantly change the concentration of H + ions in seawater.

Even though it causes only a small reduction in concentration - the input to the Slater model - «this trigger accelerates ice melt through the enhanced solar heat input over the open water fraction.»

The smaller lung capacities of women and children put them at an increased risk of developing mesothelioma and other asbestos - related diseases later in life, even though they were exposed to relatively low concentrations of the material.