Sentences with phrase «trace metals»

The study found no groundwater contamination or soil - fertility decline after three years, while the presence of trace metals remained low.

In any case, trace metals in either variety of salmon are found in such low amounts that they do not appear to be a cause for concern.

New research examined the association between trace metals and the risk of developing pancreatic cancer.

For lead, «sauna bathing might provide a therapeutic method to increase elimination of toxic trace metals».

Health experts also believe that zinc helps balance out trace metal elements in the brain to boost immunity.

At Yonderup Cave, the researchers collected dripwater samples from two sites from August 2005 to March 2011 and analysed them for δ18O, as well as for trace metals such as magnesium.

Stüeken has begun a UW postdoctoral position funded by NASA to look at trace metals such as zinc, copper and cobalt to see if one of them controlled the growth of ancient life.

«Our research highlights two important messages: Earthworms are not native in the forests of New England and they may negatively impact what forest soils do well: retaining pollutant trace metals from food webs.»

Dr. Taylor has over 10 years» experience in ICP - MS analysis and has authored several papers on advanced methodologies for trace metal analysis.

Manganese is an essential trace metal that is crucial for normal cell function and metabolism and is particularly important for brain health.

Lyons sees a role for oxygen in evolutionary changes, but his own work with molybdenum and other trace metals suggests that the increases in oxygen just before the Cambrian were mostly temporary peaks that lasted a few million years and gradually stepped upward (see «When life sped up»).

Human emissions of the potentially harmful trace metal vanadium into Earth's atmosphere have spiked sharply since the start of the 21st century due in large part to industry's growing use of heavy oils, tar sands, bitumen and petroleum coke for energy, a new Duke University study finds.

Human emissions of the potentially harmful trace metal vanadium into Earth's atmosphere have spiked sharply since the start of the 21st century due in large part to industry's growing use of heavy oils, tar sands, bitumen and petroleum coke for energy, a new Duke University study published in the Proceedings... Read more →

With more than 17 million Americans now living within one mile of an oil and gas well, there is concern about the possible contamination of surface and groundwater by trace metals, radioactive isotopes and other inorganic compounds released in these areas, they point out.

He found the microbe thriving directly on spacecraft surfaces, presumably drawing its energy from ions of trace metals like aluminum and titanium.

But it was unclear how E. coli handles copper ions present in urine, an extremely complex medium containing many trace metals and other compounds.

«The authors have presented a very solid case of how trace metals can serve as proxies for pigmentation in extinct animals.»

If we start thinking, «Oh well, we'll just burn through all our carbon reservoirs, and we'll form carbonate rocks,» we're going to end up with trace metal contamination and all kinds of unpleasant issues to deal with.

Modulation of the efficiency of trace metal phytoremediation by Sedum plumbizincicola by microbial community structure and function — Jinyu Hou — Plant and Soil

This protein conformation apparently stupendously reduces the capacity for apoE to shuttle trace metals out of nervous system tissues.

Evans J. G., et al. «Redox and trace metal regulation of ion channels in the pain pathway.»

All sea weeds and all seafoods contain naturally occurring trace metals.

«The chemicals released into streams from valley fills contain a variety of ions and trace metals which are toxic or debilitating for many organisms, which explains why biodiversity is reduced below valley fills,» says co-author Dr. Emily Bernhardt, of Duke University.

Here we present benthic foraminiferal stable isotope (d18O, d13C) and trace metal records (Cd / Ca, B / Ca, U / Ca) from Deep Sea Drilling Project Site 607 in the North Atlantic.

Volumes (800 ml) were added to triplicate polycarbonate bottles and spiked with an f / 50 nutrient derivative (10 µm NaNO3 −, 0.8 µm NaH2PO43 −, 10 µm Na2SiO3 and f / 50 vitamin and trace metal concentrations [27,28]-RRB- to promote diatom growth.

«Some developers who were inexperienced with groundwater backed away from building homes on some raw parcels where trace metal levels were high,» Johnson says.

A University of Oklahoma Civil Engineering and Environmental Science Professor Robert Nairn and his co-authors have conducted a collaborative study that suggests exposure to trace metals from potatoes grown in soil irrigated with waters from the Potosi mining region in Bolivia, home to the world's largest silver deposit, may put residents at risk of non-cancer health illnesses.

Zinc is an essential trace metal that is required for over 300 enzyme functions in the body and it has effects on at least 2,000 genetic DNA and RNA transcriptions.

• Oversaw operations of Spectro ICP Spectrometer for trace metal analysis, and conducted water determination of materials by Karl Fischer Titrators.

Dr. Jackson's interests are in the biogeochemistry and environmental fate of trace metals in the environment with a focus on human exposure.

In addition to organics and rBC, the presence of trace metals in the bus emission particles was investigated.

They also had lower amounts of trace metals and organic contaminants than blue mussels (Mytilus edulis) collected from the seafloor nearby.

The Hydrology and Earth System Sciences study highlights the need to carefully interpret dripwater cave data, and to also look into changes in its trace metals, as opposed to only δ18O, when analysing it.

Vanadium is a trace metal found in many earth materials, including petroleum and coal.

The studies show that winds from the Mojave, for instance, supply as much as half of the fine soils on the Colorado Plateau and add nutrients and trace metals that are essential for plant life.

«So when you get this pulse of iron that comes, it's a micronutrient, a trace metal that's needed by all of life that's all of a sudden available, at least for a short amount of time.»

The artificial seawater media consists of about 60 ingredients that include chemical elements such as calcium, sodium, magnesium plus organic and inorganic nitrogen, carbon, trace metals and B vitamins.

Paleo - reconstruction methods are used on several archives, including foraminifera and deep - sea corals, to determine the past variability in ocean chemistry (carbonate, nutrients and trace metals) and to tie these to present - day chemical and biological observations.

In the field of chemical oceanography it has been found impact the speciation of trace metals that are both critical for life at low levels and toxic at higher levels.

Paleo - reconstruction methods are used on several archives, including foraminifera and deep - sea corals, to determine past variability in ocean chemistry (carbonate, nutrients, and trace metals) and to tie this variability to present - day chemical and biological observations.

Unfortunately, during the refining process, many valuable micro components, like sterols, tocopherols and trace metals, which are at the root of olive oil health claims, are also removed.

Although there are several enzyme systems within the body that scavenge free radicals, the principle micronutrient (vitamin) antioxidants are vitamin E, beta - carotene, and vitamin C. Additionally, selenium, a trace metal that is required for proper function of one of the body's antioxidant enzyme systems, is sometimes included in this category.»

Mike Fitzpatrick, PhD, is an environmental scientist with expertise in the assessment of effects of contaminants in the environment, including interest in endocrine disrupting compounds and trace metals.

The bacteria scavenge the body for trace metals to make themselves more virulent (esp.