Tag: "metals" at biology news
Air pollution link to clogged arteries
... and nitrates. Organic hydrocarbons and transition metals
inflame airways by generating reactive oxygen species and oxidative stress when combined with oxidised phospholipids in the arteries. This can lead to vascular inflammation, which can in turn lead to increased lesions in the clogged arteries, potenti...
American Chemical Society's Weekly PressPac -- July 18, 2007
...brake linings, tires remain major sources of toxic metals
Fingerprinting with light shows promise for impro...brake linings, tires remain major sources of toxic metals
Environmental Science & Technology Particles worn away from automobile brake linings and tires...
Decoding mushroom's secrets could combat carbon, find better biofuels and safer soils
...ort to manage global carbon, and help remove heavy metals
from contaminated soils. The Agaricus mushroom f...garicus species are able to hyper-accumulate toxic metals
in soils at a higher level than many other fungi. Understanding how the mushroom does this improves ...
Common environmental chemicals in diet affect fetal ovarian development
...evel exposure to a cocktail of chemicals and heavy metals
in an animal which has a long pregnancy, therefore better replicating the situation in the human. Our real life model exposed developing sheep fetuses by pasturing their mothers on fields fertilised with either inorganic fertiliser, the control gro...
Today's waste, tomorrow's fuel
...earch collaboration is working to recycle precious metals
from road dusts and vehicle exhausts to create greener energy. The innovative research by scientists from the School of Earth, Ocean and Planetary Science working with the University of Birmingham is to be featured at the Royal Society Summer Scien...
World Wildlife Fund warns against iron dumping experiment near the Galapagos Islands
...osed--would probably be accompanied by other trace metals
that would be toxic to some forms of marine life. In the waters around the Galapagos, some 400 species of fish swim with turtles, penguins and marine iguanas above a vast array of urchins, sea cucumbers, crabs, anemones, sponges and corals. Many o...
Don't overlook urban soil
...eavy metal levels. Rather, researchers found trace metals
to be correlated with surface rock types instead o... relationship between surface rock types and trace metals
suggests that the transport of soil within the Baltimore landscape occurred at short distances. Re...
Giant magnetocaloric materials could have large impact on the environment
...ncing magnetic interactions between the rare-earth metals
in these materials, said co-author and Ames Laboratory senior scientist Vitalij Pecharsky. This discovery is counterintuitive, yet it opens up a range of exciting new opportunities towards the engineering of novel magnetic materials with predictable ...
Microbes at work cleaning up the environment
...ate. The bacteria are binding and immobilizing the metals
in the nanoparticles and the nanoparticles themsel...eria. Sulfate-reducing bacteria can cause heavy metals
such as zinc (Zn) to precipitate and form nanoparticles. However, these particles are able to move f...
In nature, proteins sweep up nanoparticles
...bioremediation strategies designed to trap harmful metals
such as arsenic, lead, uranium, and plutonium. We have found, in the environment, that cells release proteins and polypeptides which promote the aggregation of nanoparticulate metals, says John Moreau, lead author of the study and a former PhD stud...
QUT microgravity tower attracts global scientific community
...to better materials and that the solidification of metals
in reduced-gravity environments produces stronger structures than are formed in normal gravity....
Better chemistry through living models
...new metal complexes based on abundant, inexpensive metals
such as iron, manganese and molybdenum. To searc... designed synthetic catalysts based on inexpensive metals
can be used in fuel cells for this important energy-conversion reaction in place of platinum. The ...
Study warns deep-sea mining may pose serious threat to fragile marine ecosystems
...re often weaker or non-existent. "The demand for metals
is growing rapidly, and along with the sharp rise in metal prices, we have seen the depletion of metal-rich terrestrial mines," says Halfar. "For mining companies and their investors, undersea mining offers high concentrations of ore at relatively lo...
Egyptians, not Greeks were true fathers of medicine
...n physicians treated wounds with honey, resins and metals
known to be antimicrobial. The team also discovered prescriptions for laxatives of castor oil and colocynth and bulk laxatives of figs and bran. Other references show that colic was treated with hyoscyamus, which is still used today, and that cumin...
Tree rings show elevated tungsten coincides with Nevada leukemia cluster
...study that has examined changes in levels of heavy metals
in Fallon over time. "Trees take up metals
from the environment and those metals
show up in the tree rings. By analyzing chemicals in tree ring...
More nutritious, less toxic
...h that look at methylmercury and other toxic heavy metals
in aquatic food webs. Many of these projects are b...ces, and associate director of the Dartmouth toxic metals
program. "Dartmouth's program has made great strides in addressing public and environmental impacts ...
ACS News Service Weekly PressPac -- April 18, 2007
...ited in lake sediments in the area. By analyzing metals
in the sediments, the researchers recreated a 1,000-year history of metal smelting in the area, predating Francisco Pizarro and his Spanish conquistadors by 600 years. Their findings show that smelters in the Morococha region of Peru switched from pr...
JCI table of contents -- April 19, 2007
...h (a condition called contact dermatitis), such as metals
or poison ivy, are treated with glucocorticoids, which can be applied to the skin as a cream or taken orally. Glucocorticoids work by dampening the inflammatory response to the allergen, but precisely which cells they affect and in what way have not ...
First international conference on self-healing materials
...satile, covering all major materials classes: from metals
and concrete to polymers and ceramics. Natural materials possess the property of self-healing, but for man-made technical materials this is an entirely new asset. The first prototypes of self-healing materials already exist: Prof. Scott White of the...
Pitt study notes decline in male births in the US and Japan
...lth. We know that men who work with some solvents, metals
and pesticides father fewer baby boys. We also know that nutritional factors, physical health and chemical exposures of pregnant women affect their ability to have children and the health of their offspring. We suspect that some combination of these ...
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