Add BrightSurf on Google Email

Science News for March 31, 2015


Experts question election pledges on GP access

Experts analyze data from a national survey to question the feasibility of party promises on accessing general practice. The analysis highlights that guarantees of appointments within 48 hours may be unrealistic, and recruiting 5,000 more GPs could prove challenging.

SourceBMJ Group·JournalThe BMJ·DateMar 31, 2015

Stereotypes persist that class and privilege determine intellect and success

A new study from UC Berkeley suggests that despite egalitarian efforts, many people still believe their destiny is tied to their station in life. Children and adults who were more influenced by caste were also more likely to believe that their own natural aptitude, academic success, and personality traits were fixed or set in stone.

SourceUniversity of California - Berkeley·JournalDevelopmental Science·DateMar 31, 2015

Researchers unravel mechanism that plays key role in sexual differentiation of brain

A new study by University of Maryland researchers reveals that the brain's 'gender' may be more flexible than previously thought. The study found that a specific enzyme plays a key role in masculinization, allowing certain genes to be 'unsilenced'. This process can even occur after the window for brain sexual differentiation has closed.

SourceUniversity of Maryland School of Medicine·JournalNature Neuroscience·DateMar 31, 2015

Significant reduction seen in fatal car crashes after an increase in alcohol taxes

Researchers at the University of Florida found that an increase in alcohol taxes led to a significant reduction in fatal car crashes. After Illinois raised its excise tax on beer, wine, and spirits by 2009, fatal alcohol-related car crashes decreased by 26%. The decrease was even more marked for young people, with a 37% reduction in fa...

SourceUniversity of Florida·JournalAmerican Journal of Public Health·DateMar 31, 2015

Keeping hungry jumbos at bay

Elephant soundscapes tested for effectiveness in deterring night-time raids on farmland in southern India, with results showing 90% success rate using tiger sounds and 73% using leopard sounds. The study's findings suggest a potential solution to the growing problem of human-elephant conflict in agriculture.

SourceUniversity of Nottingham·JournalOryx·DateMar 31, 2015

University of Houston researchers build brain-machine interface to control prosthetic hand

A team of researchers from the University of Houston has developed a non-invasive brain-machine interface that allows an amputee to control a prosthetic hand with high accuracy. The technology, which uses electroencephalogram (EEG) signals to capture brain activity, enables individuals to grasp objects with ease and precision.

SourceUniversity of Houston·JournalFrontiers in Neuroscience·DateMar 31, 2015

Domestic violence deters contraception

A global study published in PLOS One found that women who experience domestic violence are less likely to use contraception, exposing them to sexually transmitted diseases. The research suggests that partner violence has a causal effect on women's use of contraception.

SourceMcGill University·JournalPLOS ONE·DateMar 31, 2015

Travelling pollution

Researchers detect human fingerprint of industrial pollutants in Borneo rainforest, revealing impact on ozone layer and forest health. Air pollution from East Asia affects air quality in equatorial Southeast Asia, introducing chemicals to the stratosphere.

SourceEuropean Geosciences Union·JournalAtmospheric Chemistry and Physics·DateMar 31, 2015

Early education narrows the achievement gap with younger starts and longer stays

Research from the Frank Porter Graham Child Development Institute shows that high-quality early education significantly boosts language skills in children from low-income families. Children who start earlier and stay longer in these programs also demonstrate strong English language skills, even those whose first language is not English.

SourceFrank Porter Graham Child Development Institute·JournalEarly Childhood Research Quarterly·DateMar 31, 2015

Particulate air pollution: Exposure to ultrafine particles influences cardiac function

A study by Helmholtz Munich researchers found that exposure to ultrafine particles can induce immediate changes in heart rate variability in individuals with impaired glucose metabolism or diabetes. The research suggests potential health risks and demands for threshold limit values for environmental standards.

Moving upstream to promote a healthier nation

The supplement explores innovative 'upstream' advances in social-ecological research to foster healthy communities, focusing on policy and environmental changes. Key findings include improved food environments and multi-level structural interventions that reduce health disparities.

SourceSAGE·JournalHealth Education & Behavior·DateMar 31, 2015

How did he do it? Mayor Bloomberg's public health strategy evaluated in Journal of Public Health Management and Practice

A case study of New York City's successful public health reforms, led by Mayor Bloomberg's 'top-down' approach and strategic organizational changes, suggests that similar initiatives may work elsewhere. However, a commentary questions the applicability of this approach to other cities.

SourceWolters Kluwer Health·JournalJournal of Public Health Management and Practice·DateMar 31, 2015

Wobbly no more

A study by Northwestern University found that children who received analogical comparison training grasped the Brace principle, a key elementary engineering concept. Children showed significant improvement in building tasks after receiving comparison training, with those receiving high-similarity pairs performing over 80% correctly.

SourceNorthwestern University·JournalCognitive Science·DateMar 31, 2015

Soft, energy-efficient robotic wings

Dielectric elastomers have made significant breakthroughs in soft robotics applications, enabling the creation of flapping robotic wings with high-energy conversion efficiencies. The new resonance phenomenon discovered by researchers can make the artificial joint bend up and down, mimicking the motion of a bird's wing.

SourceAmerican Institute of Physics·JournalApplied Physics Letters·DateMar 31, 2015

Folic acid may help elderly weather heat waves

Researchers found that folic acid supplementation increased nitric oxide production in older blood vessels, improving skin blood flow and reducing cardiovascular risk. This inexpensive alternative to pharmaceutical treatments shows promise for helping older adults cope with environmental heat waves.

SourcePenn State·JournalClinical Science·DateMar 31, 2015

Shift to gay, lesbian, bisexual identities in early adulthood tied to depressive symptoms

A new study found that people who transitioned to same-sex attraction in early adulthood reported more depressive symptoms than those whose sexual orientations did not change or changed in the opposite direction. The study highlights the need for social support during periods of sexual identity transition.

SourceAmerican Sociological Association·JournalJournal of Health and Social Behavior·DateMar 31, 2015

Scientists discover elusive secret of how continents formed

Researchers reveal 'juvenile' continental crust has been produced throughout Earth's history, contradicting the long-held theory that all continental crust was generated during the Archaean Eon. The study provides new understanding of the formation of the Earth's continental crust and its impact on the planet's life and climate.

SourceVirginia Tech·JournalNature Geoscience·DateMar 31, 2015

Skin tough

Researchers at Berkeley Lab's Advanced Light Source observed the micro-scale mechanisms behind skin's remarkable tear resistance. The study identified four synergistic mechanisms in collagen that act to diminish stress concentrations associated with tears.

SourceDOE/Lawrence Berkeley National Laboratory·JournalNature Communications·DateMar 31, 2015

Discovery of 2 new species of primitive fishes

Two new species of Saurichthys, a predatory ray-finned fish, have been discovered in Monte San Giorgio, Switzerland. These ancient fishes exhibit distinct skull and body shapes, suggesting different hunting styles and habitats, contributing to their evolutionary success.

SourceUniversity of Zurich·JournalZoological Journal of the Linnean Society·DateMar 31, 2015

Rodeo in liquid crystal

Researchers successfully created and controlled defect pairs in liquid crystals using optical tweezers. This achievement opens the door to controlling light flow using specific frequencies in liquid crystal photonic microdevices, with potential applications in photonics.

SourceSpringer·JournalThe European Physical Journal E·DateMar 31, 2015

Why slimy cheats don't win

A team of scientists found that cheater amoebae produce fewer high-quality spores, which survive better, suggesting a more balanced system than previously thought. This discovery has implications for developing therapies using socially successful bacteria to fight diseases.

SourceUniversity of Manchester·JournalCurrent Biology·DateMar 31, 2015

In Alzheimer's mice, memory restored with cancer drug

Researchers at Yale University have successfully restored memory and synaptic connections in Alzheimer's mice using the experimental cancer drug AZD05030. The treatment blocks damage caused by amyloid-beta plaques, a hallmark of Alzheimer's disease, and has led to the launch of human trials.

SourceYale University·JournalAnnals of Neurology·DateMar 31, 2015

Paracetamol is ineffective for lower back pain

A systematic review and meta-analysis found paracetamol to be ineffective in reducing pain intensity and improving disability or quality of life for patients with lower back pain. However, it provided small benefits in reducing pain and disability for osteoarthritis, while increasing the risk of liver function test abnormalities.

SourceBMJ Group·JournalThe BMJ·DateMar 31, 2015

3-D neural structure guided with biocompatible nanofiber scaffolds and hydrogels

Researchers have developed a method to embed patterned nanofibers in 3D hydrogel structures, guiding neurite outgrowth along the nanofibers. This technique enhances neurite length and can be used to replicate complex neural structures, offering potential for restoring damaged cells in the nervous system.

SourceInstitute of Neural Regeneration & Tissue Engineering·JournalJournal of Neural Engineering·DateMar 31, 2015

Methane monitoring method reveals high levels in Pennsylvania stream

Researchers at Penn State and USGS use a new stream-based monitoring system to detect high levels of methane in Sugar Run stream, consistent with what would be found in shale gas. The findings show that stream monitoring is an effective method for assessing the environmental impact of extracting natural gas using fracking.

SourcePenn State·JournalEnvironmental Science & Technology·DateMar 31, 2015

How a deadly fungus evades the immune system

A recent study published in Nature Communications has found that a little bit of sugar on the surface of fungal cells triggers the death of immune cells that would otherwise kill the fungus. This discovery could lead to a new therapeutic strategy for treating Candida albicans, one of the most common causes of bloodstream infections.

SourceUniversity of Toronto·JournalNature Communications·DateMar 31, 2015

Better method for forecasting hurricane season

A University of Arizona team developed a new model that improves seasonal hurricane forecast accuracy for the North Atlantic and Gulf of Mexico by 23 percent. The model incorporates wind force on the ocean and sea surface temperature over the Atlantic, reducing El Niño's impact during warm AMO phases.

SourceUniversity of Arizona·JournalWeather and Forecasting·DateMar 31, 2015

Innovative strategies needed to address the US transplant organ shortage

The US transplant organ shortage continues to grow, with thousands on waiting lists for 5 years or more. Medical leaders propose removing financial disincentives and exploring incentives like health insurance post-donation to ensure donor safety. However, there is ongoing debate about the ethics of introducing financial payments.

SourceWiley·JournalAmerican Journal of Transplantation·DateMar 31, 2015

The 100 million year-old piggyback

Scientists have discovered a 100-million-year-old insect fossil that shows an adult female insect caring for its young, a behavior previously unknown to exist during the Mesozoic era. This discovery pushes back the earliest direct evidence of insect brood care by more than 50 million years.

SourceeLife·DateMar 31, 2015

Bullying by students with disabilities reduced by social-emotional learning

A three-year study found that students with disabilities who participated in a social-emotional learning program experienced a 20% decrease in bullying perpetration. The researchers suggest that the program helped these students better manage their impulses, reducing reactive aggression and improving overall behavior.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalRemedial and Special Education·DateMar 31, 2015

Scientists find clues into cognitive dysfunction in chronic fatigue syndrome

Researchers found depressed levels of cytokines, including interleukin 1, in individuals with ME/CFS compared to healthy controls, while an inflammatory molecule called eotaxin was elevated in the group. These findings may contribute to symptoms such as brain fog and offer hope for objective diagnostic tests and therapies that correct ...

The rise of the takeaway

A study by University of Cambridge researchers found a substantial increase in takeaway food outlets in Norfolk over two decades, particularly in deprived areas. The density of these outlets rose significantly, contributing to higher obesity rates and unhealthy diets among local residents.

SourceUniversity of Cambridge·JournalHealth & Place·DateMar 31, 2015