Fifty thousand years ago, a meteor carrying trace amounts of silicone carbide crashed into present-day Arizona.
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However, carbon-14 is only found in trace amounts, which can make it difficult to detect.
The only drug not in veterinary records was this fourth drug present in only trace amounts.
Connor, who holds four world records, tested positive for trace amounts of testosterone and nandrolone last month.
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Researchers took a single urine sample from hospitalized heart patients, found normal BPA trace amounts, and concluded BPA did it.
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Typically, drugs get into the water supply when people flush unneeded medication down toilets or pass trace amounts in urine.
The cause of death was arsenic poisoning and an autopsy found trace amounts of strychnine and other chemicals in his body.
In recent years, some reports have suggested that tap water could be contaminated by trace amounts of pharmaceuticals or other substances.
The men were arrested on Tuesday days after a laboratory test found trace amounts of ricin in their possession, the authorities said.
Trace amounts of anthrax were found in the mailroom in Feinstein's office.
Typically, all kinds of drugs get into the water supply when people flush unneeded medication down toilets or pass trace amounts in urine.
Trace quantities of vitamins occupy the same essential phenomenological niche in our food that trace amounts of rare earths occupy in our technologies.
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BOSTON A common antianxiety drug, which like many medications ends up in rivers and streams in trace amounts, alters how fish behave, Swedish scientists reported Thursday.
Radioactivity contaminated the soil and sea near the plant, the Tokyo water supply and trace amounts of radiation are being detected in Asia and North America.
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But even decaf contains trace amounts of caffeine, so the authors can't entirely rule out the possibility that caffeine has an effect on health, Freedman says.
These are human hairs, and Psychemedics of Acton, Mass. can detect trace amounts of illicit drugs in the hair's cortex through a process known as radioimmunoassay.
There is no de minimis exemption for these metals if they are necessary for the functionality or production of the product, so even trace amounts count.
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The grafted skin could tear, and infection is possible from the trace amounts of murine cells, which come from lab rats or mice, used to aid skin growth.
The only not-vet recorded drug was present only in trace amounts, and could have been given at a point before the trainer knew the exact date of the pre-purchase exam.
Remaining traces are indistinguishable in a body of water as enormous as the Gulf of Mexico and no different than the trace amounts that naturally seep from the ocean floor.
The pesticides, known as organophosphates, are commonly sprayed on food crops and can be found in trace amounts on berries, green beans, and other fruits and vegetables sold in stores.
"Despite the trace amounts of lead in the products at issue, the federal government has determined that Americans need to eat more -- not less -- of these nutritious foods, " they said in court documents.
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By 2008, the city stopped restaurants from using all but trace amounts of transfats, and Mr. Bloomberg recently won some success in convincing global food companies to lower the amount of sodium in prepackaged products.
And the finding is particularly pertinent because existing dietary advice to pregnant women, at least in America, is that they should limit their consumption of seafood in order to avoid exposing their fetuses to trace amounts of brain-damaging methyl mercury.
The architects worked with Pureti, a green-tech manufacturer (and winner of a 2011 "What's New" award from Popular Science), to develop a spray version of a titanium nano particle that, when activated by sunlight, oxidizes airborne particulates and converts them into water vapor and trace amounts of carbon dioxide.
"This is very exciting, clearly, because here we have somebody who can have anaphylaxis and deadly reaction from trace amounts, and you're converting this person into somebody who can tolerate a significant amount of the food, " said Dr. Anna Nowak-Wegrzyn, associate professor of pediatrics at Mount Sinai Medical Center in New York.
Rather, as a consequence of injecting water and sand into the shale formation to crack the rocks so gas and oil will flow, massive amounts of waste water comes back to the surface with significant amounts of contaminants as a result of leaching out salt, heavy metals and trace amounts of radioactive materials from the rock formation itself.
To simulate the atmosphere, they have built a special cloud chamber of their own, with the air manufactured from scratch, using liquid nitrogen and oxygen together with precise amounts of trace compounds, including sulphuric acid and ammonia.
What differentiates Implant from other homeland security makers is its chief product, Quantum Sniffer, whose explosive trace sensors are capable of detecting minute amounts of a wide variety of explosives, regardless of whether they are the military, commercial or home-made type.
The FBI had hoped to use science to trace the source of the anthrax, a biological spore that even in small amounts can prove deadly and can be easily transmitted through the air.
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