'Gold Bug' sheds light on how some gold deposits formed
... archaea have the ability to transfer electrons to iron through a reduction process," explained Lovley. "I... Earth's development now are important deposits of iron ore, according to Lovley. In the laboratory, postdoctoral research associate Kazem Kashefi, andgradu...August media highlights GEOLOGY and GSA TODAY
...ance. GEOLOGY Demonstration of significant abiotic iron isotope fractionation in nature. Thomas D. Bullen,....Iron is an abundant, bioreactive element and thus iron isotopes have the potential to be extremely useful for detecting microbial processes in the geologic...Scientists share multidisciplinary discoveries at 'Earth System Processes'
...obically. He gathered this evidence using FISH and iron microbe techniques to measure carbon isotope depletion. Martin Brasier, Earth Sciences at the University of Oxford, will provide a new look at whether or not morphological remains of fossils thought to be photosynthetic are as old as previous estimat...Reexamining irons role in heart disease
...te. LDL can be oxidized in vitro by treatment with iron or other metal ions to generate a form that accumu...herosclerotic lesion. The potential importance of iron in atherogenesis has been suggested frequently, and some epidemiological evidence suggests that high...New effort to increase coal production announced
... the worlds tungsten, and 10 percent of Minnesotas iron oxide. Roe-Hoan Yoon, Virginia Tech professor of mining and minerals engineering and director of CAST, says it "is important to reduce the costs of producing fuels in the U.S." In 1999, the U.S. imported $67.7 billion of oil, accounting for 25 percen...Copper is crucial for embryonic deveopment, say U-M scientists
...out copper, cells can't produce energy, metabolize iron or detoxify freeradicals. Without copper, we can't...ormal littermates. Since the ability to metabolize iron - another critical nutrient -- depends on copper, it was not a surprise to find that iron levels wer......east six times per week. Another 70% use a curling iron or hot rollers more than once per week. How does heat-styling work and what else happens to hair as it gets heated? Researchers will discuss various effects of heat styling on hair including water loss and resulting decrease in hair plasticity. (Pres...When Shewanella meets goethite: Evidence found of recognition between animate and inanimate objects
... in most soils, meets goethite, the most important iron oxide in soils worldwide. The research provides so...t on the way minerals dissolve and the movement of iron in the environment. So the researchers looked at Shewanella and goethite, the iron oxide known ...Effects of iron-deficiency anemia in infants linger
...able diseases. Iron deficiency - a severe lack of iron in the blood - is the most common single nutrient ... groups at highest risk, Lozoff says. In the U.S., iron fortification of infant formula was begun 30 years ago, and iron-deficiency anemia was drastically d...Scientists determine how chemistry keeps weird worms "out of hot water" at steaming deep-sea vents
...number of sulfur compounds simultaneously, such as iron monosulfide, hydrogen sulfide, thiosulfate, polysu...er temperatures allow for the formation of soluble iron monosulfide, a compound that reduces the toxicity of the hydrogen sulfide in the surrounding water,"...Latest farm product: Meadowbirds
... farmers' conservation strategies included putting iron racks over clutches to protect from being trampled by cows, marking clutches so they can manure and mow around them, and mowing bird-rich fields last to give the clutches more time to hatch. The researchers' method was also cheaper than the current ...Faster nanowires may advance nanotechnological applications for detecting glucose, hormones or DNA
... In a biological application, the end holding the iron would instead hold, say, an enzyme or piece of DNA capable of reacting with similar molecules in our bodies. The reaction would then cause a current to run through the wire to a computer chip. Dudek hopes to try detecting electrical changes in simple...Excess iron stores more common than anemia in study of U.S. elderly
Fleming et al.conducted a study of iron nutrition in the elderly, who are the fastest grow...Journal of Clinical Nutrition, suggest that excess iron stores pose a greater health risk than iron deficiency in the elderly, because elevated iron stores ...UCSD biologist transform leaves into petals
...t of the medieval alchemists' dream of transmuting iron into gold. In a cover article in the February issue of the scientific journal Current Biology, the UCSD scientists show that a new class of floral genes that they recently discovered, together with three other genes responsible for flower deve...A persimmon a day could be better for your heart than an apple
...r levels of sodium, potassium, magnesium, calcium, iron and manganese. 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 agai...Mouse with iron disorder offers clues to Parkinson's, similar diseases
Mice engineered to lack a gene involved in iron metabolism may provide important clues for deciphe... of Nature Genetics that mice lacking the gene for iron regulatory protein 2 (IRP2) develop iron deposits in key areas of the brain. The progressive deteri...Story tips from the Department of Energy's Oak Ridge National Laboratory, January 2001
...ture that shows regions of the ocean where limited iron dust deposition may be influencing ocean biologica...ts significant because scientists know that adding iron to the diet of marine plants has been shown to boost the amount of carbon dioxide-absorbing phytopla......y sandy with little organic matter, clay, and high iron content. This helps limit the physical movement of contaminants in the soil, but alone this containment is not enough to meet regulatory limits. Author Vijay Vulava says, "Several contaminants move unhindered in these soil materials due to their ...Global diagnosis completed of ocean regions most sensitive to an iron-rich diet
Adding iron to the diet of marine plant life has been shown in...of the worlds oceans were also areas that received iron from wind-blown dust. Iron is one of the essential nutrients needed for microscopic marine plant lif......cean ridge hot spring deposits which are formed by iron and sulfur-based minerals. The low-temperature hydrothermal fluids may have unusual chemistries because they emanate from mantle rocks. Nothing like this submarine hydrothermal field has ever been previously observed, say the scientists. These ev...