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Science News for November 28, 2006


Committee review of stem-cell fraud finds editors followed all rules

An independent committee concluded that journal editors at Science went above and beyond existing procedures to verify fraudulent stem-cell research articles, but the committee found that the cachet of publishing in Science can be an incentive not to follow the rules. The committee proposed developing a procedure for identifying high-r...

Brilliant growth without gold

Researchers at Max Planck Institute for Microstructure Physics developed single crystal silicon nanowires using an aluminium catalyst, reducing the size of microchips. The new process fulfils key criteria for industrial-scale production and could lead to improved semiconductor components.

SourceMax-Planck-Gesellschaft·JournalNature Nanotechnology·DateNov 28, 2006

Health inequalities are a growing problem worldwide

A recent study by Yale University researchers highlights substantial global health inequalities influenced by economic, social, and health-sector variables. Countries with low income and high mortality rates have lower investment in human and physical resources, more health risks, and worse educational outcomes.

SourceYale University·JournalJournal of Epidemiology and Community Health·DateNov 28, 2006

Microcapsules like it hot and salty

Scientists have developed a theoretical model to predict the properties of microcapsules based on salt content and temperature, enabling precise control over their permeability. This allows for intelligent transport systems that can release active substances at specific locations in the body.

SourceMax-Planck-Gesellschaft·JournalPhysical Review Letters·DateNov 28, 2006

Magnetic needles turn somersaults

Researchers at Max Planck Institute have found a way to easily reverse vortex cores, creating a digital bit that is extremely stable. This mechanism can be used for a new magnetic storage concept, where magnetic pulses can efficiently reverse the vortex core with no losses and quickly.

SourceMax-Planck-Gesellschaft·JournalNature·DateNov 28, 2006

Evolution of typhoid bacteria

The study reveals that asymptomatic carriers played a crucial role in the evolution and global transmission of Typhi, leading to antibiotic resistance and hindering treatment efforts. The research also highlights the importance of healthy carriers in facilitating the spread of the bacteria.

SourceMax-Planck-Gesellschaft·JournalScience·DateNov 28, 2006

A stunning new look at déjà vu

A University of Leeds study reports a groundbreaking case of déjà vu in a blind individual, challenging traditional theories. The research suggests that déjà experiences are caused by disrupted familiarity areas in the brain, contradicting optical pathway delay theory.

SourceUniversity of Leeds·JournalBrain and Cognition·DateNov 28, 2006

Night of the living enzyme

Researchers at PNNL discovered that entombed enzymes in silica nanochambers can regain their activity, mimicking cellular crowding. The team developed a method to functionalize the pores with compounds tailored to specific enzymes, allowing for potent catalysis and efficient production of desired products.