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Science News for April 21, 2015


Printing silicon on paper, with lasers

A new fabrication technique allows for direct production of polycrystalline silicon on flexible surfaces, enabling the creation of wearable electronics and other applications. The method bypasses a traditional thermal annealing step, making it more suitable for use with flexible substrates.

SourceAmerican Institute of Physics·JournalApplied Physics Letters·DateApr 21, 2015

BMC develops protocol for preserving forensic evidence after a terrorist attack

The BMC protocol provides a set of predetermined guidelines for processing and preserving forensic evidence in surgical specimens after a terrorist attack. Key findings include the importance of identifying a team to handle all surgical specimens, obtaining labeled photographs and x-rays, and storing forensic evidence securely.

SourceBoston University School of Medicine·JournalArchives of Pathology & Laboratory Medicine·DateApr 21, 2015

Zip me up!

Researchers have identified the specific molecules involved in skin fusion during wound healing, using fruit fly embryos as a model system. The study reveals a complex process involving molecular machines and cellular components that work together to fuse the skin, with microtubules playing a crucial role in this process.

SourceGoethe University Frankfurt·JournalNature Cell Biology·DateApr 21, 2015

When genes are expressed in reverse: Discovered a regulatory mechanism of antisense DNA

Researchers at IDIBELL have discovered a molecular mechanism that explains how antisense DNA transcripts regulate gene expression in cancer. The findings provide new clues and mechanisms to understand the functions and alterations of these transcripts in cancer, including their role in tumor invasion.

SourceIDIBELL-Bellvitge Biomedical Research Institute·JournalProceedings of the National Academy of Sciences·DateApr 21, 2015

Phytoplankton, reducing greenhouse gases or amplifying Arctic warming?

A recent study by POSTECH researchers suggests that phytoplankton may amplify Arctic warming under greenhouse conditions, contrary to previous assumptions. The growth of phytoplankton is triggered by the melting of sea ice, leading to a positive feedback loop that warms the ocean surface and amplifies climate change.

SourcePohang University of Science & Technology (POSTECH)·JournalProceedings of the National Academy of Sciences·DateApr 21, 2015

Sweet potato naturally 'genetically modified'

Researchers at Ghent University discovered that sweet potatoes contain genes from the bacterium Agrobacterium, which were likely introduced through horizontal gene transfer. The findings suggest that genetic modification also occurs in nature, and could have implications for our understanding of plant evolution.

SourceGhent University·JournalProceedings of the National Academy of Sciences·DateApr 21, 2015

Caltech researchers create 'comb' that detects terahertz waves with extreme precision

Researchers at Caltech have developed a device called a frequency comb to detect terahertz waves, allowing for precise measurement and identification of molecules in space. The device can measure thousands of frequencies simultaneously, enabling scientists to analyze the chemical fingerprints associated with various molecules.

SourceCalifornia Institute of Technology·JournalPhysical Review Letters·DateApr 21, 2015

Babies feel pain 'like adults'

A pioneering Oxford University study using MRI scans found that babies experience pain much like adults, with 18 of 20 brain regions active in adults also active in babies. The study suggests that infants may be more sensitive to pain than adults and highlights the need for improved pain relief guidelines.

Patients grapple with high cost of arthritis medications

A recent study found that patients with rheumatoid arthritis face high initial copayments and then fall into a coverage gap, where they pay 45% of drug costs. This financial burden can be substantial, with some patients paying over $2,700 annually before receiving relief from catastrophic coverage.

SourceWiley·JournalArthritis & Rheumatology·DateApr 21, 2015

Virtual telescope expands to see black holes

Astronomers have combined telescopes across the Earth to create the Event Horizon Telescope, which will take detailed images of the supermassive black hole at the center of the Milky Way galaxy. The South Pole Telescope has joined the EHT, bringing a two-to-three times increase in resolution to study black holes and test Einstein's the...

Type 2 diabetes: Understanding regulation of sugar levels for better treatment

Researchers have identified a new mechanism that controls glucagon secretion in humans, which could lead to more effective treatment of type 2 diabetes. By understanding this phenomenon, it is possible to elucidate the paradoxical effect of a new class of diabetes drugs and suggest modifications to this new type of treatment.

Getting better all the time: JILA strontium atomic clock sets new records

The JILA strontium atomic clock has achieved unprecedented precision and stability levels, outperforming previous world records by more than three times. This breakthrough enables the measurement of tiny changes in time and gravity, with applications in advanced communications, positioning technologies, and relativistic geodesy.

Extending climate predictability beyond El Niño

Researchers have made breakthroughs in predicting tropical Pacific climate variations, extending the lead time from three seasons to up to three years. The new findings reveal a more complex relationship between the Atlantic and Indian Oceans, providing insights into long-term climate variability and its impact on global weather patterns.

SourceUniversity of Hawaii ‑ SOEST·JournalNature Communications·DateApr 21, 2015

Calculating how the Pacific was settled

A University of Utah anthropologist analyzed statistics to determine how Pacific islands were settled between 3,500 and 900 years ago. The study found that seafarers traveled mostly against prevailing winds and sought easily visible islands, rather than relying on distance or resource availability.

SourceUniversity of Utah·JournalAmerican Antiquity·DateApr 21, 2015

UAlberta research reveals new possibilities for islet and stem cell transplantation

Researchers have developed a new technique for islet transplantation under the skin, which shows promise in reversing diabetes in preclinical models. This approach harnesses the body's natural ability to respond to a foreign body by growing new blood vessels, offering a safer and more reliable treatment option.

Messenger RNA-associated protein drives multiple paths in T-cell development

A new study found that an increase in CELF2 expression drives widespread changes in mRNA splicing during T-cell development, leading to physiologically important changes in proteins. The research provides unprecedented insight into the regulation of splicing during thymic development and reveals a biologic role for CELF2 in human T cells.

SourceUniversity of Pennsylvania School of Medicine·JournalProceedings of the National Academy of Sciences·DateApr 21, 2015

Childhood cancer survivors more likely to claim social security support as adults

A recent study from Huntsman Cancer Institute found that childhood cancer survivors are more than five times as likely to be enrolled in federal social security disability assistance programs compared to individuals without a cancer history. The study identified survivor socio-demographic and treatment characteristics associated with a...

SourceUniversity of Utah Health·JournalJNCI Journal of the National Cancer Institute·DateApr 21, 2015

How to approach your boss about a treadmill desk

New research from Brigham Young University suggests treadmill desks can increase physical activity in the workplace without significantly impacting cognitive performance. The study found that walkers showed slight decreases in processing speed and attention, but retained their learning and performed well on non-cognitive tasks.

SourceBrigham Young University·JournalPLOS ONE·DateApr 21, 2015

Rafts on the cell membrane

Researchers used advanced techniques to study single molecules and protein interactions on the cell membrane. The findings revealed that lipid rafts, previously thought to move within the membrane, do not exist. Instead, proteins may be anchored at specific positions on the surface, influencing cellular processes.

SourceVienna University of Technology·JournalNature Communications·DateApr 21, 2015