metal
DURHAM, N.C. -- Bioengineers at Duke University have developed a laboratory robot that can successfully locate tiny pieces of metal within flesh and guide a needle to its exact location - -- all without the need for human assistance.
Better predictions of how many valuable materials behave under stress could be on the way from the National Institute of Standards and Technology (NIST), where scientists have recently found evidence* of an important similarity between the behavior of polycrystalline materials -- such as metals and ceramics -- and glasses.
Edmonton -- University of Alberta researchers conducting a water study in the Mackenzie River Delta have found a dramatically higher delivery of mercury from the Mackenzie River to the Arctic Ocean than determined in previous studies.
NEW YORK, NY -- JUNE 16, 2009 -- The Cardiovascular Research Foundation (CRF) announced that results of the largest meta-analysis to date comparing mortality rates for drug-eluting stents (DES) versus bare metal stents (BMS) were published online June 15 in the journal Circulation.
SANTA CRUZ, CA--Chemists at the University of California, Santa Cruz, have developed novel compounds that show promise for photodynamic cancer therapy, which uses light-activated drugs to kill tumor cells.
A team of researchers from the University of Cadiz has confirmed that zinc, copper and lead are present at high levels in the water and sediments of the Huelva estuary, and have studied how some of these heavy metals are transferred to fish. The study shows that zinc, cadmium and copper accumulate in the body tissues of sole and gilthead bream.
PASADENA, Calif. -- By squeezing a typical metal alloy at pressures hundreds of thousands of times greater than normal atmospheric pressure, scientists at the California Institute of Technology (Caltech) have created a material that does not expand when heated, as does nearly every normal metal, and acts like a metal with an entirely different chemical composition.
Howard Hughes Medical Institute researchers are reporting the first detailed molecular snapshots of a deadly gastrointestinal virus as it is caught in the grasp of an immune system molecule with the capacity to destroy it. The images could help scientists design a more effective vaccine against rotavirus, a lethal infection that kills more than 500,000 children worldwide each year.
PHILADELPHIA ?- Engineers from the University of Pennsylvania, Sandia National Laboratories and Rice University have demonstrated the formation of interconnected carbon nanostructures on graphene substrate in a simple assembly process that involves heating few-layer graphene sheets to sublimation using electric current that may eventually lead to a new paradigm for building integrated carbon-ba
Berkeley -- Today's transistors and light emitting diodes (LED) are based on silicon and gallium arsenide semiconductors, which have fixed electronic and optical properties.
The chemical bisphenol A, commonly found in many plastic household items, has been linked to yet another health problem in animals -- an increased frequency of arrhythmias, or heartbeat irregularities, a new study found. The results, seen only in females, will be presented Saturday at The Endocrine Society's 91st Annual Meeting in Washington, D.C.
Exposure during pregnancy to the chemical bisphenol A, or BPA, found in many common plastic household items, is known to cause a fertility defect in the mother's offspring in animal studies, and now researchers have found how the defect occurs. The results of the new study will be presented Saturday at The Endocrine Society's 91st Annual Meeting in Washington, D.C.
BERKELEY, CA -- Graphene is the two-dimensional crystalline form of carbon, whose extraordinary electron mobility and other unique features hold great promise for nanoscale electronics and photonics. But there's a catch: graphene has no bandgap.
Nanoparticle films are no longer a delicate matter: Vanderbilt physicists have found a way to make them strong enough so they don’t disintegrate at the slightest touch.
In the last 25 years, ever since scientists figured out how to create nanoparticles – ultrafine particles with diameters less than 100 nanometers – they have come up with a number of different methods to mold them into thin films
Nanoparticle films are no longer a delicate matter: Vanderbilt physicists have found a way to make them strong enough so they don't disintegrate at the slightest touch.
