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Science News Archive March 2008 - Page 15


Page 15 of 19

Language of a fly proves surprising

A team of researchers discovered that a common fly's motion-sensitive neurons emit spikes very often and precisely, revealing a more complex language than previously thought. This new understanding challenges traditional assumptions about neural networks and could lead to the development of more efficient artificial intelligence.

SourceDOE/Los Alamos National Laboratory·JournalPLOS Computational Biology·DateMar 7, 2008

Stratospheric ozone chemistry plays an important role for atmospheric airflow patterns

Researchers at the Alfred Wegener Institute found that stratospheric ozone chemistry significantly influences the Arctic Oscillation, leading to changes in atmospheric air flows and temperature distribution. This basic knowledge is crucial for improving climate models and reducing uncertainty in simulated climate developments.

Allergic response tied to lipid molecules in cell membrane

Researchers at Penn State University have discovered that lipid molecules in cell membranes play a key role in triggering allergic reactions. The team used advanced imaging techniques to show how cholesterol-rich lipid domains associate with IgE antibodies and their receptors, leading to histamine release and allergic symptoms.

SourcePenn State·JournalJournal of Biological Chemistry·DateMar 7, 2008

Skewered pumpkins

Researchers developed a pH-sensitive pseudorotaxane nanovalve that can switch between open and closed states. The valve uses cucurbituril molecules to control the flow of guest molecules in porous silica spheres, offering a potential solution for targeted drug delivery.

SourceWiley·DateMar 7, 2008

JCI online early table of contents: March 6, 2008

New DNA vaccine technology targets DCs for enhanced immune response; studies in mice show improved protection against viruses and potential applications for cystic fibrosis modeling. Genetic manipulation creates large animal models of CF, providing new avenues for disease research.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMar 6, 2008

Genetic manipulation might model cystic fibrosis

Researchers at the University of Iowa and Missouri have developed pig and ferret models of cystic fibrosis through genetic manipulation. The studies used adeno-associated virus vectors to disrupt or introduce mutations into the CFTR gene, resulting in animals that may lead to the development of a good animal model for the disease.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMar 6, 2008

Changes in ocean conditions in Sargasso Sea potential cause for decline in eel fishery

A recent study by NOAA scientists suggests that changes in ocean-atmosphere conditions may be a primary factor in declining European eel reproduction and survival rates. The North Atlantic Oscillation is believed to be a key driver of these changes, which can impact the development of glass eels, the juvenile stage of the eel population.

SourceNOAA National Marine Fisheries Service·JournalJournal of Marine Research·DateMar 6, 2008

MRI/PET scanner combo

The combined scanner uses a new technology to eliminate interference between MRI and PET systems, enabling simultaneous acquisition of structural and functional information. This innovation allows researchers to correlate tumor structure with functional information, providing deeper insights into cancer research.

SourceUniversity of California - Davis·JournalProceedings of the National Academy of Sciences·DateMar 6, 2008

Synthetic peptoids hold forth promise for new antibiotics

Researchers at Stanford University have identified synthetic peptoids as a potential new class of antibiotics, which could overcome the limitations of natural peptides. These manmade molecules show promise in treating bacterial infections, including diabetic foot ulcers, with minimal harm to human cells.

SourceStanford University·JournalProceedings of the National Academy of Sciences·DateMar 6, 2008

Rutgers research reveals how deadly food poisoning and bioterrorism toxins could be tamed

Scientists at Rutgers University have made a breakthrough in understanding the mechanism of ricin-induced cell death. By inhibiting a natural defense mechanism called unfolded protein response (UPR), researchers may develop new therapeutic agents to counteract ricin poisonings, which can also be triggered by certain bacteria.

SourceRutgers University·JournalJournal of Biological Chemistry·DateMar 6, 2008

Your brain on Krispy Kremes

A new study from Northwestern University's Feinberg School of Medicine explores the neural mechanisms behind hunger and food cravings. The research found that when subjects were fasting, their brains responded strongly to visual cues of donuts, highlighting the brain's ability to prioritize needs in a complex environment.

SourceNorthwestern University·JournalCerebral Cortex·DateMar 6, 2008

Controlling most atoms now possible

Researchers have developed techniques to control most atoms using atomic coilguns and lasers, enabling the determination of neutrino mass and potential applications in atomic physics. The breakthroughs use a combination of supersonic beam technology and single-photon cooling methods.

SourceUniversity of Texas at Austin·JournalPhysical Review Letters·DateMar 6, 2008

'Surgery' looks at inventions and innovations by surgeons

A symposium in the journal SURGERY explores how surgeons can turn research ideas into commercially viable products that benefit patients and generate financial returns. The symposium emphasizes the importance of collaboration between surgeons and industry, while navigating issues such as conflict of interest.

SourceElsevier·JournalSurgery·DateMar 6, 2008

Wandering albatrosses follow their nose

Research reveals that wandering albatrosses follow the direction of scent plumes to locate food sources, often flying crosswind and zigzagging into the wind towards meals. This unique hunting strategy allows them to cover a wide strip of ocean while conserving energy.

SourceUniversity of California - Davis·JournalProceedings of the National Academy of Sciences·DateMar 6, 2008

Sun's corona is both hot and kinky

Scientists at University of Warwick argue that Alfvén waves, thought to superheat the Corona, are actually kink waves, a bending of the magnetic field. This reinterpretation throws doubt on previous research and leaves the question of the Corona's extreme heat unresolved.

SourceUniversity of Warwick·JournalThe Astrophysical Journal Letters·DateMar 6, 2008

Rock: Electrons run through it

Scientists have discovered that a chunk of hematite can conduct electrons when exposed to the right chemical conditions. This phenomenon, linked to mineral surfaces, has important implications for understanding soil evolution and environmental cleanup. The discovery challenges long-held assumptions about electron conduction in minerals.