A recent study found that nearly a third of pharmaceutical ads in American medical journals offered no supporting references. Meanwhile, the majority of data-on-file documents cited in these ads were inaccessible to physicians due to company policies. In contrast, journal articles and books were more readily available for review.
SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateFeb 14, 2005
Researchers have developed ultra-smooth diamond-like carbon that meets the requirements for ultra-high density magnetic storage devices. Additionally, scientists have used live pond snail nerve cells to implement neural memory on a semiconductor chip, while also studying how air bubbles slow sound waves in water.
SourceAmerican Physical Society·JournalPhysical Review Letters·DateNov 17, 2003
A new semiconductor material can lead to solar cells with higher efficiency, while a study on magnetic memory devices suggests they could speed up by a factor of 1000. Researchers also found that certain interactions between molecules can create negative friction, which could have applications in fields like photosynthesis and nanoscal...
SourceAmerican Physical Society·JournalPhysical Review Letters·DateNov 3, 2003
Researchers used computer simulations to study explosions in high-energy materials, predicting primary chemical reactions and mechanical stresses. Meanwhile, new models accurately predict lung crackle sounds, potentially aiding diagnosis of pulmonary dysfunctions.
SourceAmerican Physical Society·JournalPhysical Review Letters·DateSep 8, 2003
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Researchers at UCLA created a 30-cm diameter plasma laser by applying a nonuniform magnetic field. Meanwhile, scientists have made rapid advances in detecting dark matter using weak gravitational lensing experiments. A paper also examines the emerging behavior of complex systems in electronic bidding on online auction sites like eBay.
SourceAmerican Physical Society·JournalPhysical Review Letters·DateJul 30, 2003
Researchers have made significant breakthroughs in photon entanglement, attosecond camera technology, and molecular conductivity. Maximally entangled photons can be used for quantum teleportation, while the attosecond camera allows for the observation of electron dynamics within atoms. Additionally, a team has demonstrated controlled s...
SourceAmerican Physical Society·JournalPhysical Review Letters·DateApr 17, 2002