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Science News Archive 2006 - Page 15


Page 15 of 178

Cell death following blood 'reflow' injury tracked to natural toxin

A team of researchers at Johns Hopkins Medicine has discovered a natural toxin, PAR-polymer, responsible for most tissue and organ damage after a period of blood oxygen loss followed by restored blood flow. The toxin triggers cell death through a process called parthanatos, which can be prevented with potential new treatments.

SourceJohns Hopkins Medicine·JournalProceedings of the National Academy of Sciences·DateNov 29, 2006

Mystery of ancient astronomical calculator unveiled

Researchers have cracked the workings of the Antikythera Mechanism, a 2,000-year-old computer that tracked astronomical movements with remarkable precision. The ancient Greek device predicted eclipses and recreated the moon's irregular orbit, challenging previous assumptions about their technological capabilities.

SourceCardiff University·JournalNature·DateNov 29, 2006

Protective garment

Researchers have developed a breathable protective garment material that blocks toxic vapors while allowing water vapor to pass through, maintaining personal comfort and safety. The material is lightweight and selectively rejects chemical agents, making it an ideal solution for military personnel and emergency services.

SourceWiley·JournalAdvanced Materials·DateNov 29, 2006

Parental genes do what's best for baby

A new genetic theory suggests that certain offspring characteristics can only be explained by genetic cooperation between maternal and paternal genes. This challenges the prevailing view of a parental power struggle, instead proposing that positive interactions between mothers and their offspring drive imprinting patterns.

SourceUniversity of Manchester·JournalPLOS Biology·DateNov 29, 2006

New therapeutic hope for degenerative disc disease

Researchers found that embryonic cells from a dog's notochord can regenerate disc cartilage, providing new therapeutic options for degenerative disc disease. The study suggests that CTGF-secreting notochord cells protect non-chondrodystrophic dogs against the condition.

SourceWiley·JournalArthritis & Rheumatism·DateNov 29, 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.