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Science News for February 7, 2017


Critically ill children can still undergo liver transplantation and survive

A nationwide study published in JACS found that critically ill children can now undergo liver transplantation and achieve similar survival benefits as stable children. Survival rates have improved significantly since pediatric critical care was recognized as a specialty area of medicine, with one-year survival increasing from 66% to 92%.

SourceAmerican College of Surgeons·JournalJournal of the American College of Surgeons·DateFeb 7, 2017

Surprising spin behavior at room temperature

Scientists successfully demonstrate circularly polarized electroluminescence from spin-polarized LEDs at room temperature, without external magnetic fields. The discovery opens up new avenues for spintronics and potential applications in secure optical communications, cancer diagnosis, and optically enhanced nuclei imaging.

SourceTokyo Institute of Technology·JournalProceedings of the National Academy of Sciences·DateFeb 7, 2017

A bridge of stars connects 2 dwarf galaxies

Researchers use Gaia data to detect pulsating stars and trace the extent of the Large Magellanic Cloud, revealing a fuzzy halo stretching 20 degrees from its center. The discovery provides insights into the clouds' mass and interaction with the Milky Way, shedding light on their role in galaxy formation.

SourceUniversity of Cambridge·JournalMonthly Notices of the Royal Astronomical Society·DateFeb 7, 2017

The oxygen content increased when the Earth was covered in ice

A recent study found that oxygen levels in the air began to rise around 2.4 billion years ago, coinciding with global glaciation and a single supercontinent called Kenorland. The research suggests that volcanic activity on this massive landmass may have contributed to the unstable climate leading to fluctuations in oxygen levels.

SourceLund University·JournalProceedings of the National Academy of Sciences·DateFeb 7, 2017

New study shows GFAP and UCH-L1 are not useful biomarkers for diagnosing mild traumatic brain injury

Researchers found that elevated levels of GFAP and UCH-L1 in patients with acute orthopedic injuries did not distinguish between those with and without mild traumatic brain injury. This study highlights the need for caution when using these biomarkers, as false-positive diagnoses could lead to unnecessary imaging.

SourceMary Ann Liebert, Inc./Genetic Engineering News·JournalJournal of Neurotrauma·DateFeb 7, 2017

Breast cancer patients with dense breast tissue more likely to develop contralateral disease

A recent study published in the journal Cancer found that breast cancer patients with dense breast tissue have almost a two-fold increased risk of developing disease in the contralateral breast. The researchers identified 680 stage I, II and III breast cancer patients who were treated at MD Anderson between 1997 and 2012.

More screen time for kids isn't all that bad

A study found that moderate to high levels of screen time are not associated with negative outcomes in teenagers. The researcher suggests that parents should focus on how media is used rather than just time consumption, as it can foster learning and socialization.

SourceSpringer·JournalPsychiatric Quarterly·DateFeb 7, 2017

Protostar displays a strange geometry

Researchers observed a protostar and found that gas can shed angular momentum by being cast into the vertical direction, creating a 'traffic jam' near the centrifugal barrier. This behavior aligns with calculations using a ballistic model, shedding light on the dynamics of stellar formation.

SourceRIKEN·JournalMonthly Notices of the Royal Astronomical Society·DateFeb 7, 2017

Depressed patients with earlier and more severe symptoms have high genetic risk for major psychiatri

A recent study found that depressed patients with an early age at onset and higher symptom severity have a significantly increased genetic risk for major depressive disorder, bipolar disorder, and schizophrenia. The research used genome-wide data to identify specific subgroups of depressed patients based on their clinical characteristics.

SourceElsevier·JournalBiological Psychiatry·DateFeb 7, 2017

Tiny organisms with a massive impact

Researchers found that diatoms' rapid growth creates algal blooms that deplete nutrients in the upper water layer, which then affect global ocean currents. Diatoms absorb zinc and silicon to form shells and transport these trace elements through deep ocean currents.

SourceETH Zurich·JournalNature Geoscience·DateFeb 7, 2017

Women's fertility may decrease with physically demanding or shift work

A Harvard study found that heavy lifting and non-daytime work schedules can decrease fertility in women, especially those who are overweight or over 37. The researchers measured biomarkers of fecundity in nearly 500 women seeking infertility treatment, revealing an inverse association between physical demands and egg yields.

SourceHarvard T.H. Chan School of Public Health·JournalOccupational and Environmental Medicine·DateFeb 7, 2017

How hydras know where to regrow lost body parts

A study published in Cell Reports found that hydras have a network of tough protein fibers called the cytoskeleton, which acts as structural memory and guides cell alignment. This allows the hydra to regrow lost body parts with remarkable accuracy.

SourceCell Press·JournalCell Reports·DateFeb 7, 2017

Electronic depositary of living systems created

The Lomonosov Moscow State University has created an electronic depositary of living systems, featuring a unique information system with data on biological samples from various origins. The system allows for managing and sharing information about biomaterial, including descriptions of organisms and techniques for operating with them.

SourceLomonosov Moscow State University·JournalMolecular Phylogenetics and Evolution·DateFeb 7, 2017

New method improves accuracy of imaging systems

A new research provides a mechanism to detect and correct systematic errors in data and image analysis used in many areas of science and engineering. The single-pixel interior filling function (SPIFF) method can improve the accuracy of imaging systems for tracking objects on scales ranging from nanometers to astrophysical scales.

SourceUniversity of Chicago·JournalProceedings of the National Academy of Sciences·DateFeb 7, 2017

Coal ash selenium found in fish in N.C. lakes

A Duke University study has found elevated selenium levels in fish from three North Carolina lakes receiving power plants' coal ash waste, contaminating aquatic ecosystems and posing health risks. The study highlights the ongoing issue of continuous contamination of aquatic resources from hundreds of coal ash ponds across the country.

SourceDuke University·JournalEnvironmental Science & Technology·DateFeb 7, 2017

How to recycle lithium batteries

Researchers have developed a hydrometallurgical method to recycle lithium batteries, recovering cobalt and lithium with reasonable efficiency. The process involves calcination, acid treatment, and leaching, resulting in useful extraction rates for the metals.

SourceInderscience Publishers·JournalInternational Journal of Energy Technology and Policy·DateFeb 7, 2017

New brain target for potential treatment of social pathology in autism spectrum disorder

A study by Rosalind Franklin University of Medicine and Science identifies a specific brain circuit in the amygdala as crucial for empathy, providing hope for new treatments of social difficulties in autism. The findings suggest that targeting this region may help individuals with autism spectrum disorder develop social abilities.

Three new uranium minerals from Utah

Researchers have identified three new uranium minerals, leesite, leószilárdite, and redcanyonite, found growing on the walls of old uranium mines in southern Utah. These minerals provide valuable insights into the chemistry and structure of uranyl compounds and their interactions with the environment.

SourceMichigan Technological University·JournalMineralogical Magazine·DateFeb 7, 2017

How life survives: UNC researchers confirm basic mechanism of DNA repair

Scientists from UNC School of Medicine have confirmed the functions in bacterial cells of two important excision repair proteins, Mfd and UvrD, using an advanced sequencing technique. The study provides a genome-wide map of excision repair in bacteria and highlights the potential for developing novel antibiotic drugs.

SourceUniversity of North Carolina Health Care·JournalProceedings of the National Academy of Sciences·DateFeb 7, 2017