Humans at work and play in high altitude environments
...ed by West. They live at sea level and commute to copper mines located above 15,000 feet. The high altitude exposure has impaired the miners sleep quality, mental performance, productivity and general well-being. Another AAAS presenter on Feb. 18 was Cynthia M. Beall, Ph.D., S. Idell Pyle professor of an...A persimmon a day could be better for your heart than an apple
...anese. Apples had higher overall concentrations of copper and zinc. Eating one medium-sized persimmon (about 100 grams) a day is enough to help fight atherosclerosis, says Gorinstein. She is quick to add that other fruits also help guard against heart disease and urges people to include them in their diet a...Zooming liquid particles show technological promise
...aluminum foil) to a silicon surfacecoating a large copper block. The device also contains a pressure gaugean...hermocouples to measure the temperature inside the copper block. Asthe droplets move across the silicon surface, Chaudhury and hiscolleagues view them through...First-ever complete plant genome sequence is announced
...se, in which the human body's inability to excrete copper can be fatal. One result of the research has been crops that are more resistant to the cold. Because every molecular function of plants is dictated by DNA, an understanding of the genome could also help scientists develop crops that grow faster an...Finding a market for 'ecosystem services'
...ut a price tag on timber harvested from forests or copper mined from the ground, but can we put an economic value on the less tangible services ecosystems provide, such as water purification and flood control? A group of 30 scientists, lawyers, conservationists, economists and policymakers came together at ...Improvement in controlling agricultural runoff still needed to prevent ecological disasters
...lture, biology, and engineering have been studying copper runoff and its impacts and in waters off Eastern V... agencies. They have found that concentrations of copper in creeks exceeded the reported mortality level for clams, shrimp, and many fish species. Farmers h...UF researchers: technique cuts pollution from burning treated wood
... in Washington, D.C. Wood treated with chromated copper arsenate, commonly known as CCA, contains arsenic and chromium, which are known carcinogens. Used in everything from decks to porches to playground equipment, it has come under increasing scrutiny in recent years as scientists have raised concerns ab......centration of metals in the brain, including zinc, copper and lead. The UCI researchers hope that future research will establish exactly how calsenilin produces its effects. Based on their other research with presenilin, the researchers speculate that calsenilin might regulate the total amount of calcium...Updated study shows baseline annual diet costs less for women than men
...m requirements for polyunsaturated fatty acids and copper were not satisfied with the diets. In addition, the male minimum requirement for carbohydrates was not met. The new nutrient content was taken from the 1998 edition of "Bowes and Church's Food Values of Portions Commonly Use," by J A T Pennington, th...Revised model of protein-drug interactions could make job of drug designers a little easier
...nce that metals like magnesium, zinc, chromium and copper -- always known to be critical in the diet, if in minuscule amounts -- play a major role in the molecular machinery of the cell. Koshland notes that other enzymes have been shown recently to bind equally well to both mirror image molecules. In some...Researchers find high levels of mercury in native ore deposits
...horeline. On Michigan's Keweenaw Peninsula, native copper and silver washistorically recovered from the pare...caused) mercury levels were highly correlated with copper and silverdeposits among sediment core samples from nearshore Lake Superior, L'Anse Bay,and the Kewe...New electrical transformers will improve power quality
...stors and integrated circuits instead of the heavy copper coils and iron cores of conventional transformers. The work is sponsored by Asea Brown Boveri, an engineering and technology company with headquarters in Zurich, Switzerland. A patent recently was issued for the solid-state transformer, which over th...Heavy metal research is music to biologists' ears
...the stuff of pennies is crucial for life--themetal copper is an important helper to many cellular enzymes, i...er "chaperone" protein, a molecule that transports copper to the SOD enzyme. Although copper is necessary for life, it is a potentially toxic "heavy metal"tha...New mechanism explains Alzheimer's damage
...y. "We havefound that the amyloid protein...binds copper and iron and produces hydrogenperoxide (H2O2) out ...d could produce any new chemicals." Bush says that copper and iron, abundant in the brain, are known to be enrichedin amyloid deposits. So he expects levels ...Concern Unfounded About Damage From Vitamin C
...have undesirable reactions with metal ions such as copper or iron in thepresence of an oxidant such as hydrogen peroxide," said Anitra Carr, a researchassociate with the Linus Pauling Institute. "Some scientists, including onestudy that got international attention last year, have hypothesized that thesame t......ring in twopeople working with 2 percent beryllium copper alloy, according to the currentissue of the Journa...nmental Medicine. CBD caused by 2percent beryllium copper alloy was last described in the U.S. medical literaturemore than 40 years ago. "From the 1930s to th...Striking A Healthy Balance For The Elderly
...ustrial health, examined the intake of iron, zinc, copper and magnesiumof 2,170 Americans aged 65-90. Kanna...e need tomaintain a healthy balance of iron, zinc, copper and magnesium is especiallyimportant for seniors who must contend with other health factors." Kannan...Scientists Discover Key Cog In Receptor That Governs Ripening
...nd agingin plants, scientists have found an ion of copper -- and a genetic link to someof the oldest life fo...botany professor Anthony B. Bleecker reportsthat a copper ion is a key mediator in the process by which plants senseminuscule concentrations of ethylene. The ......isers contaminate the soil with levels of cadmium, copper andlead which are twice as high as when a combination of both animalmanure and artificial fertiliser is used. This has been demonstrated infarm case studies carried out by environmental scientists fromWageningen Agricultural University to calculate t......ory role,exposing an intimate relationship between copper and iron metabolism, andoffering researchers an im...f the epithelium. However, the mechanism by which copper plays a rolein intestinal iron export has remained obscure. Moreover, some tissues involvedin iron t...