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Science News Archive November 2012 - Page 9


Page 9 of 23

Kidney tumors have a mind of their own

A team of researchers at St. Michael's Hospital has discovered multiple ways kidney tumours can achieve the same result – namely, grow. By examining chromosomal changes, methylation, and gene expression, they identified specific regions where genetic alterations occur in kidney cancer.

SourceSt. Michael's Hospital·JournalCancer Research·DateNov 21, 2012

Uncovering complexity

A single type of neuron in Caenorhabditis elegans nerve cord encodes an entire sensorimotor loop, with feedback driving motion itself. The discovery reveals a sophisticated system allowing the worm to organize its movements through proprioceptive feedback.

SourceHarvard University·JournalNeuron·DateNov 21, 2012

US Coast Guard, USC win INFORMS Wagner Prize for protecting american ports from terrorists

The US Coast Guard and USC's Viterbi School of Engineering developed the PROTECT system, which uses quantal response theory to model unpredictable adversary behavior. The system has been successfully deployed in Boston and is undergoing testing at New York, showing improved results over human-generated patrolling strategies.

Early birds had an old-school version of wings

The study reveals that early bird ancestors had more primitive wing designs, with simpler feathers that were different from those of modern birds. The researchers believe that these early wings may have worked effectively for gliding and high-speed flapping flight, but not for low-speed flight or ground takeoff.

SourceCell Press·JournalCurrent Biology·DateNov 21, 2012

Dwarf planet makemake lacks atmosphere

Astronomers have discovered that dwarf planet Makemake lacks a significant atmosphere, revealing new insights into its composition. The study used observations of Makemake passing in front of a star to determine its size, density, and albedo, with findings comparable to dirty snow.

SourceESO·JournalNature·DateNov 21, 2012

Parrots imitate individuals when addressing them

Researchers found that parrots imitate unique calls to initiate conversations with specific individuals, responding more frequently and faster when mimicking an individual's call. In the wild, this ability helps orange-fronted conures communicate effectively in dynamic flocks.

SourcePLOS·JournalPLOS ONE·DateNov 21, 2012

Neural interaction in periods of silence

Researchers have developed a novel methodology called NET-fMRI to map widespread neural networks activated by local events. The study reveals that short periods of recurrent ripples in the brain are closely associated with reproducible cortical activations and extensive activity suppression in other brain structures.

SourceMax-Planck-Gesellschaft·JournalNature·DateNov 21, 2012

An antidote for hypersomnia

Researchers at Emory University School of Medicine have identified a substance in the cerebrospinal fluid of patients with primary hypersomnia, a disabling and poorly understood sleep disorder. Treatment with flumazenil has restored alertness in some patients, suggesting a potential new approach to therapy.

SourceEmory Health Sciences·JournalScience Translational Medicine·DateNov 21, 2012

Daily steps add up for midlife women's health

A study of 292 Brazilian women aged 45-72 found that daily step count is a strong predictor of health outcomes, with active women less likely to be obese or develop metabolic syndrome. The study supports the importance of incorporating physical activity into daily life for midlife women's overall health.

SourceThe Menopause Society·JournalMenopause·DateNov 21, 2012

CardioScape: European Society of Cardiology & European Union to recommend transnational funding strategies for cardiovascular disease research

The European Commission awards the ESC nearly €500,000 to survey European CVD research funding landscape and identify gaps in funding. The CardioScape project will provide intelligence on where cardiovascular research funding is provided and make recommendations for future transnational research strategies.

Biomarking time

A study by University of California, San Diego researchers describes markers and a model that quantify how aging occurs at the level of genes and molecules. The findings provide a way to determine a person's actual biological age from just a blood sample.

SourceUniversity of California - San Diego·JournalMolecular Cell·DateNov 21, 2012

Male bias persists in female-rich science conferences

Research finds that male-dominated symposia have significantly fewer women presenters than those organized by women or mixed groups, despite primatology being a field with a significant history of female scientists. Women in the field tend to give more posters than talks, whereas men dominate talks.

SourcePLOS·JournalPLOS ONE·DateNov 21, 2012

Cartilage made easy with novel hybrid printer

A novel hybrid printer combines two low-cost fabrication techniques to create cartilage constructs with improved mechanical stability. The printer uses a combination of synthetic and natural materials, allowing for the growth of cells and development of structures typical of elastic cartilage.

SourceIOP Publishing·JournalBiofabrication·DateNov 21, 2012