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Science News Archive February 2017 - Page 29


Page 29 of 37

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