Sentences with phrase «lead concentrations above»

Some of the vegetables tested were found to have lead concentrations above the levels set by European law as safe for foodstuffs.

Not exact matches

According to the study, the majority of the birds assessed had concentrations of lead of between 20 and 100 µg / dl, a quantity considered to be subclinical exposure, above the threshold at which lead can affect the antioxidant system in this species (15 µg / dl).

Hepatic encephalopathy occurs when the liver can not remove certain toxins and chemicals, such as ammonia, from the blood.1 These toxins and chemicals then build up and enter the brain.1 Hepatic encephalopathy is one of the major complications of cirrhosis (scarring of the liver), and a leading cause of hospital re-admission due to its recurrence, despite treatment.1 It can occur suddenly in people with acute liver failure, but is seen more often in those with chronic liver disease.1 Symptoms of hepatic encephalopathy include mild confusion, forgetfulness, poor concentration and personality or mood changes, but can progress to extreme anxiety, seizures, severe confusion, jumbled and slurred speech and slow movement.1 The first step in treatment is to identify and treat any factors that cause hepatic encephalopathy.2 Once the episode has resolved, further treatment aims to reduce the production and absorption of toxins, such as ammonia.1 Generally, there are two types of medication used to reduce the likelihood of another hepatic encephalopathy episode — lactulose and rifaximin.2 However, it remains a leading cause of hospitalisations and re-hospitalisations in cirrhotic patients, despite the use of the above - mentioned standard of care treatment.

Lead concentrations in the air and soil are 8.5 to 10 times above national health standards and lead dusts local crops at levels 24 times higher than such health standaLead concentrations in the air and soil are 8.5 to 10 times above national health standards and lead dusts local crops at levels 24 times higher than such health standalead dusts local crops at levels 24 times higher than such health standards.

It is also true that very high concentrations, particularly in soil, can lead to plant stress and death (alhough moist soils commonly have CO2 concentrations above 10 % just due to respiration of he soil organisms).

The analysis concluded that without much stronger action to cut emissions both before and after 2020, «global emissions will remain on an unsustainable pathway that could lead to concentrations equal or above 550 p.p.m. [parts per million of carbon dioxide in the air] with the related temperature» rising 3 degrees Celsius, or 5.4 degrees Fahrenheit.

Simulations with this model led Berger and Loutre to conclude that glacial inception is not due for another 50,000 years, as long as the CO2 atmospheric concentration stays above 220 ppmv [8].

The lead paper in last week's issue of Science, by Aradhna Tripati et al, demonstrated that it had been 15 million years since carbon concentrations were this high — and that when it happened last the seas rose a hundred feet above their current level.