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Science News for March 18, 2014


Getting rid of bad vibrations

Researchers at Fraunhofer LBF have created a new vibration control table that combines sensors and actuators in an integrated platform. This design allows for better protection against vibrations, particularly at lower frequencies, while maintaining performance and cost-effectiveness.

Rice study: Simple changes to homework improved student learning

A Rice University and Duke University study found that modifying homework procedures improved exam scores without changing the course curriculum. The study used cognitive science principles, including repeated retrieval practice, spacing, and immediate feedback, to develop inexpensive yet effective educational changes.

SourceRice University·JournalEducational Psychology Review·DateMar 18, 2014

JCI online ahead of print table of contents for March 18, 2014

A genetic variant in SCN10A modifies cardiac expression of SCN5A, essential for conduction. An inflammatory feedback loop activates STAT3, repressing miR-34a and promoting EMT in colorectal cancer cells. Insulin resistance in bone disrupts glucose homeostasis through decreased active osteocalcin.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMar 18, 2014

Rocky Mountain wildflower season lengthens by more than a month

A 39-year study reveals that more than two-thirds of alpine flowers have changed their blooming patterns in response to climate change. The blooming season has lengthened by a month, with different species responding in unexpected ways. This change is expected to have strong effects on pollinating insects and migratory birds.

SourceU.S. National Science Foundation·JournalProceedings of the National Academy of Sciences·DateMar 18, 2014

Who wants to be a millionaire?

A recent study by Renato Gianella found that lottery numbers can be analyzed using a colored template based on Pascal's rule, allowing players to identify combinations with the highest probabilities of winning. The method was tested across multiple countries and demonstrated its effectiveness in predicting lottery results.

SourcePublicase International·JournalREVISTA BRASILEIRA DE BIOMETRIA·DateMar 18, 2014

Why international sanctions do not always work

New research suggests that diplomatic pressure and sanctions by the international community can actually support regimes in power, rather than changing their behavior. Countries like Cuba have successfully used stigma and shaming to maintain their sovereignty and resist Western influence. The findings highlight the need for a deeper un...

SourceUniversity of Copenhagen·JournalInternational Organization·DateMar 18, 2014

NRL models Deepwater Horizon oil spill

The Naval Research Laboratory's (NRL) Deepwater Horizon oil spill model accurately predicted shoreline oil impact, utilizing Coupled Ocean-Atmosphere Mesoscale Prediction System (COAMPS). By combining satellite images with ocean circulation models, NRL developed BioCast to forecast water clarity and contaminant distribution.

SourceNaval Research Laboratory·JournalOcean Modelling·DateMar 18, 2014

Some truth to the 'potent pot myth'

Research from The Netherlands found that high-potency cannabis users still take in more THC than lower potency smokers. Despite attempting to compensate by inhaling less smoke, titration efforts were only partially successful, resulting in roughly half of the THC strength being absorbed.

SourceWiley·JournalAddiction·DateMar 18, 2014

Many low-income women don't want to leave hospital after false-labor diagnosis

A Baylor University study found that 40% of low-income pregnant women discharged after a false labor diagnosis did not want to leave the hospital. The main reasons were pain and distance from their homes. Receiving written instructions about comfort measures at home improved their satisfaction with care. Comfort is a major aspect of sa...

SourceBaylor University·JournalMCN The American Journal of Maternal/Child Nursing·DateMar 18, 2014

Ancient DNA shows moa were fine until humans arrived

A study analyzing ancient DNA from over 250 radiocarbon-dated moa samples reveals that the iconic New Zealand bird was thriving when humans arrived, contradicting previous theories of population collapse before human arrival. The research suggests human activities contributed to the moa's extinction.

SourceCurtin University·JournalProceedings of the National Academy of Sciences·DateMar 18, 2014

NHS sight tests lead to waste

Complex NHS sight tests are leading to unnecessary referrals and resource waste due to clinically insignificant abnormalities. Opticians refer patients to medical practitioners if abnormalities are found, but many of these referrals result in false positives and anxiety for patients.

SourceBMJ Group·JournalThe BMJ·DateMar 18, 2014

Moffitt researchers discover new mechanism allowing tumor cells to escape immune surve

Lung cancer cells use high levels of TGF-β to suppress NK cell activity, leading to reduced DAP12 expression and impaired cytotoxic pathways. The researchers identified a critical role for miR-183 in this process, providing new insight into the exploitation of immune evasion mechanisms by cancer cells.

SourceH. Lee Moffitt Cancer Center & Research Institute·JournalProceedings of the National Academy of Sciences·DateMar 18, 2014

New view of supernova death throes

A new three-dimensional model of supernova collapse reveals the role of turbulent mixing in expanding, contracting and ejecting elements before explosion. This breakthrough insight into the death throes of stars sheds light on the formation of elements necessary for life on Earth.

SourceAmerican Institute of Physics·JournalAIP Advances·DateMar 18, 2014

Antimony nanocrystals for batteries

Scientists from ETH Zurich have synthesized uniform antimony nanocrystals, which can store both lithium and sodium ions, making them prime candidates for anode materials in both lithium-ion and sodium-ion batteries. The researchers found that the optimal size-performance relationship of these nanocrystals is between 20-100 nanometres.

SourceETH Zurich·JournalNano Letters·DateMar 18, 2014

Building heart tissue that beats

Researchers at Harvard Medical School and University of Sydney develop elastic hydrogel-based cardiac tissue that beats in synchrony with natural heart muscle. The breakthrough could lead to repairing damaged hearts without organ transplants, revolutionizing the treatment for millions worldwide.

Stem cells from muscle can repair nerve damage after injury, Pitt researchers show

Researchers at the University of Pittsburgh School of Medicine have made a groundbreaking discovery using human muscle-derived stem cells to repair damaged nerves. The study found that these stem cells could differentiate into neurons and glial support cells, leading to full regeneration of the sciatic nerve in animal models.

SourceUniversity of Pittsburgh Schools of the Health Sciences·JournalJournal of Clinical Investigation·DateMar 18, 2014