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Polar bears' family secrets revealed with DNA sequencing

A new study published in PLOS Genetics found that brown bears on Alaskan archipelago descended from polar bears through hybridization, not the other way around. The research used DNA sequencing to analyze the X chromosomes of the brown bears and found that 6.5% of them had recently come from polar bears.

SourcePLOS·JournalPLOS Genetics·DateMar 14, 2013

High-performance, NW-OPTs open the way for optoelectronic device miniaturization

Research team at UNIST developed high-performance NW-OPTs, showing enhanced charge-carrier mobility and higher external quantum efficiencies compared to thin-film OPTs. This breakthrough enables bottom-up fabrication of optoelectronic nanodevices with high operational stability and easy control of photoswitching voltages.

SourceUlsan National Institute of Science and Technology(UNIST)·JournalAdvanced Functional Materials·DateMar 13, 2013

How do bacteria clog medical devices? Very quickly

Researchers at Princeton University found that bacteria can clog medical devices like stents in a short period of time by forming sticky biofilms. The study used controlled environments with rough surfaces and pressure-driven fluid, demonstrating the need for real-world conditions to understand device failures.

SourcePrinceton University·JournalProceedings of the National Academy of Sciences·DateMar 1, 2013

Clean energy research targets idle engines

A new research project aims to develop sustainable air conditioning and refrigeration systems for vehicles, reducing fuel consumption and greenhouse gas emissions. The technology uses waste heat from engine exhaust to power the system, resulting in a significant reduction in emissions and energy consumption.

A self-healing protective coating for concrete

Scientists have developed a self-healing protective coating for concrete cracks that can repair itself using sunlight. The coating contains microcapsules loaded with a material that seals cracks upon cracking, providing an environmentally friendly solution to protect infrastructure from deterioration.

SourceAmerican Chemical Society·JournalACS Applied Materials & Interfaces·DateFeb 20, 2013

Synthetic circuit allows dialing gene expression up or down in human cells

Researchers at the University of Texas M.D. Anderson Cancer Center have developed a synthetic gene circuit that can dial up or down gene expression in human cells, enabling refined research for drug resistance and cancer treatment. The circuit's precision will allow scientists to test the boundaries of genes known to confer resistance ...

SourceUniversity of Texas M. D. Anderson Cancer Center·JournalNature Communications·DateFeb 11, 2013

New technique sheds light on RNA

A new technique called Bru-Seq allows researchers to label newly created RNA, enabling them to analyze the synthesis and stability of RNA in cancer cells. This breakthrough has the potential to provide deeper insights into gene expression and identify early warning signs of disease.

SourceMichigan Medicine - University of Michigan·JournalProceedings of the National Academy of Sciences·DateJan 28, 2013

INRS develops a nanohybrid with remarkable properties using a new laser-plasma process

Researchers at INRS Énergie Matériaux Télécommunications Centre developed a novel nanohybrid structure combining carbon nanotubes and lead sulfide nanoparticles using pulsed laser ablation technique. The new material exhibits strong photoresponse, fast photocurrent response time and spectrally wide photoactivity.