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Science News Archive December 2017 - Page 29


Page 29 of 33

Cold discomfort: Increasing cancer rates and adaptation of living in extreme environments

A new study by Voskarides suggests that genetic variants beneficial for survival at extreme temperatures can predispose individuals to cancer. The study analyzes the relationship between cancer risk and local average annual temperatures, concluding that extremely cold environments contribute to cancer risk.

Entangling biological systems

A Northwestern University team creates quantum entanglement from a biological system using green fluorescent proteins. This finding advances scientists' understanding of biology and opens doors to exploit quantum mechanics for new applications.

SourceNorthwestern University·JournalNature Communications·DateDec 5, 2017

Which sequences make DNA unwrap and breathe?

Researchers develop a model explaining how DNA sequences affect nucleosome accessibility for gene expression, bridging the gap between mechanical and chemical information in DNA molecules. The study reveals specific base pair sequences that enable packaged DNA to unwind and 'breathe', allowing genes to be read.

SourceSpringer·JournalThe European Physical Journal E·DateDec 5, 2017

Pop the bubbly and hear the quality

Researchers investigated the sounds made by champagne bubbles to determine if they could infer bubble size and ultimately assess wine quality. By analyzing acoustic properties, they found that bubble size distribution can be obtained from simple measurements, potentially aiding in quality assurance testing of sparkling wines.

UTSW researchers identify possible new way to treat parasitic infections

Researchers at UT Southwestern Medical Center identified a chemical that suppresses the lethal form of a parasitic infection caused by roundworms. The study developed a mouse model susceptible to the full range of infection and found that a synthetic steroid called Δ7-dafachronic acid significantly reduced worm burden.

SourceUT Southwestern Medical Center·JournalProceedings of the National Academy of Sciences·DateDec 5, 2017

Conquering traffic congestion with mathematics

A new collaborative engineering project funded by NSF aims to make numerical computation of departure rates and route choice faster, enabling rapid rerouting and diversion. The project uses machine learning to develop statistical models of traffic flow, potentially reducing congestion by seconds, minutes or hours ahead of time.

Protein-folding simulations sped up

A new algorithm can speed up protein-folding simulations, allowing researchers to model phenomena that were previously out of reach. This technique can help scientists better understand and treat diseases like Alzheimer's, which is associated with amyloid-beta protein fragments forming hard plaques that disrupt neurons.

SourceAmerican Institute of Physics·JournalThe Journal of Chemical Physics·DateDec 5, 2017

Catalyzing carbon dioxide

Researchers at Harvard's Rowland Institute have developed a system that uses renewable electricity to electrochemically transform carbon dioxide into carbon monoxide, with an energy conversion efficiency of up to 12.7%. The device has the potential for industrial applications and could be scaled up to scrub CO2 from the atmosphere.

SourceHarvard University·JournalChem·DateDec 5, 2017

Women who attempt suicide exhibit different protein levels years after the attempt

Researchers found that women with a history of suicide attempts had lower circulating levels of BDNF, a protein critical for neuron function and synaptic activity, compared to those without such a history. This biomarker shows promise in predicting future suicide attempts and may be incorporated into standard blood tests at annual chec...

SourceBinghamton University·JournalSuicide and Life-Threatening Behavior·DateDec 5, 2017

When the doctor's away

A study published in JAMA found that patients treated by substitute doctors had similar death rates as those treated by regular hospital staff. However, hospitals that used substitute physicians less often had poorer patient mortality outcomes, possibly due to geographic remoteness or limited financial resources.

SourceHarvard Medical School·JournalJAMA·DateDec 5, 2017