Sentences with phrase «elevated concentrations»

Not only are elevated concentrations toxic to wildlife and even to people, but also even moderate concentrations can, if allowed to persist, fuel the explosive growth of algae.

At the intermediate salt concentrations, populations previously exposed to elevated concentrations of salt had higher rates of survival than populations previously exposed to natural concentrations of salt.

Large parts of Boston remain at this baseline, but Phillips and Ackley recorded elevated concentrations in many other areas.

Conclusions: Higher intakes of PHVOs are associated with elevated concentrations of inflammatory biomarkers, whereas higher intakes of non-HVOs are associated with lower plasma concentrations of these biomarkers.

Large parts of Boston remain at this baseline, but Phillips and Ackley recorded elevated concentrations in many other areas.

It was while studying gold - mining regions in China that Hongmei Wang of Ohio State University and her colleagues discovered that high numbers of B. cereus spores occur in soils bearing elevated concentrations of gold, as compared with soils lacking gold.

When compared with the possible shoreline features, the Mars Odyssey data shows elevated concentrations of the elements below the shoreline and lower concentrations above.

Critics of the therapy have also argued that milk from rBST - treated cows may develop elevated concentrations of insulinlike growth factor - 1 (IGF - 1).

In a paper just published in Nature Communications, they present evidence that malformed fossil remains of marine plankton from the late Silurian (415 million years ago) contain highly elevated concentrations of heavy metals, such as iron, lead, and arsenic.

Licinio said he «expected to see elevated concentrations in those patients.

A clear, odorless gas that is non-toxic to humans at many times ambient concentrations, carbon dioxide is an essential plant nutrient, and elevated concentrations boost most plants» biomass productivity, water use efficiency, and resistance to environmental stresses such as ozone pollution.

These conditions elevate concentrations of free fatty acids, which in turn cause insulin resistance to worsen.

Asphyxiant gases in the breathing air are normally not hazardous.Only where elevated concentrations of asphyxiant gases displace thenormal oxygen concentration a hazard exists.

But gray water, if not properly treated, will introduce elevated concentrations of impurities into cooling water and other process streams that can cause huge problems.

The long term picture, over millennia, offers little solace because of the long time it takes for elevated concentrations of carbon dioxide to remain in the atmosphere.

Now scientists say they may have discovered one of those unanticipated possibilities: a significant change in the ear anatomy of fish raised in water with elevated concentrations of carbon dioxide, the main heat - trapping emission, much of which is absorbed by the sea.

Elevated concentrations in effluents or sludge were only found at a few sites in the case of the heavy metals copper and zinc.

But a recent study found that elevated concentration of capsaicin, the actual compound which makes hot peppers hot, caused much more prostate cancer cells to freeze in a non-proliferative phase.

Elevated concentrations of circulating blood cholesterol in adult life (total and LDL cholesterol in particular) are strong and reversible risk factors for CHD in adulthood (2, 3).

Elevated concentrations of lead are being found in school districts across New York.

Testing identified high levels of fecal bacteria in the water and elevated concentrations of other bacteria such as E. coli that flows out of a stormwater drain just south of the beach.

Dr Paschalis added: «Understanding the responses of plants to elevated concentrations of CO2 is of major importance with potential implications on the global economy and water and food security under a changing climate.»

«We found that elevated concentrations of these same chemicals were present at altitudes of 12 km over tropical regions, many thousands of kilometres away from their likely source, and in a region where air is known to be transferred into the stratosphere,» says Oram.

For example, elevated concentrations of ruthenium, rhodium and gold were found in the Jura (presumably from the watchmaking industry), and of arsenic (presumably geogenic) in parts of Graubünden and Valais.

«That created this expectation that there's a link between these high concentrations of methylmercury down in the deep brine layer and the elevated concentrations in waterfowl in the wetlands adjacent to the lake,» Johnson says.

Long - term growth In a 13 - year field experiment on 296 open - air plots, the researchers grew perennial grassland species under ambient and elevated concentrations of both atmospheric CO2 and soil nitrogen.

Metropolitan areas with the large populations and elevated concentrations of one or both air pollutants, they wrote, would realize the biggest improvements in public health by meeting the more protective standards.

After all, EPA attributes endangerment to the «elevated concentration» of greenhouse gases, so the agency has already satisfied the substantive criteria for initiating a NAAQS rulemaking laid out in Section 108 of the Clean Air Act.

Whereas moderately intense exercise can elevate the concentration of salivary IgA and reduce influenza symptoms.

«The aspect of dietary saturated fat that is believed to have the greatest influence on cardiovascular risk is elevated concentrations of low density lipoprotein (LDL) cholesterol.

Elevated concentrations of C - reactive protein (CRP), interleukin - 6 (IL - 6), and interleukin - 18 were postulated of particular importance in the pathogenesis of type 2 diabetes among women (3, 5).

Elevating the concentration of important amino acids, vitamins, minerals, trace elements and other compounds that are necessary to support hair growth, maintenance and protection will help to minimize hair loss.

It is well known that women with PCOS have greater insulin resistance, and therefore a heightened risk of type 2 diabetes, but research into the impact of PCOS symptoms, such as irregular menses and elevated concentration of androgen hormones, and how they increase diabetes risk in women without PCOS is less understood.

First, elevated concentrations of metals, and a heavy spring from a genuine desire to know and be able to.

The clinical signs of diabetes mellitus are related to elevated concentrations of blood glucose and the inability of the body to use glucose as an energy source.

It focused on laboratory tests in which coccolithophores were grown in water made more acidic by infusing it with bubbles of air with elevated concentrations of carbon dioxide.

Since the EPA defines the relevant «air pollution» as the «elevated concentrations» of greenhouse gases in the atmosphere (Endangerment Rule, p. 66516), the agency would have to set the NAAQS below current atmospheric levels.

Although the elevated concentrations of atmospheric CO2 that raise temperature can also raise crop yields, the detrimental effect of higher temperatures on yields overrides the CO2 fertilization effect for the major crops.