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Science News Archive 2019 - Page 59


Page 59 of 486

Stretchable, degradable semiconductors

Researchers have developed a new material that combines semiconducting properties with intrinsic stretchability and full degradability. The material can be stretched to twice its normal length without compromising electrical performance and degrades completely within 10 days in a weak acid.

SourceAmerican Chemical Society·JournalACS Central Science·DateNov 13, 2019

Rational transparent conductor design provides a boost to carbon nanotubes application

Scientists at Skoltech developed a novel p-type flexible transparent conductor using single-walled carbon nanotubes, which opens new avenues for its applications. The newly developed conductor achieved a record power conversion efficiency of 8.8% in solar cells, outperforming traditional amorphous silicon solar cells.

Few-cycle pulses break the 300 W barrier

A team of researchers has generated multi-millijoule 3-cycle pulses at an unprecedented average power level of 318 W, paving the way for industrial applications. The achievement marks a significant milestone in few-cycle laser technology and opens up new possibilities for highly parallelized material processing.

SourceForschungsverbund Berlin·JournalOptica·DateNov 13, 2019

Mysteries behind interstellar buckyballs finally answered

A team of researchers from the University of Arizona has discovered a mechanism creating complex carbon molecules, such as C60, in a simulated planetary nebula environment. The study suggests that these molecules are derived from silicon carbide dust made by dying stars and can be dispersed throughout the interstellar medium.

SourceUniversity of Arizona·JournalThe Astrophysical Journal Letters·DateNov 13, 2019

Yale study finds 'hyperhotspots' that could predict skin cancer risk

Yale researchers have discovered hyperhotspots in the human genome that are up to 170-times more sensitive to ultraviolet radiation, potentially leading to a new way of predicting skin cancer risk. By analyzing these hyperhotspots, doctors could gain a better understanding of a patient's exposure history and skin cancer risk.

SourceYale University·JournalProceedings of the National Academy of Sciences·DateNov 13, 2019

Early ID of prenatal exposure to opioids, gabapentin improves timely treatment of newborns

Researchers at Marshall University found that universal maternal toxicology screening, including gabapentin, led to increased identification of co-exposure and improved timely treatment for newborns experiencing withdrawal symptoms. This resulted in shorter hospital stays, averaging 48 days compared to 58 days before the screening began.

SourceMarshall University Joan C. Edwards School of Medicine·JournalThe Journal of Pediatrics·DateNov 13, 2019

Climate impact of hydropower varies widely

A new study reveals that hydropower's climate impact is not as environmentally friendly as thought, with some facilities emitting more greenhouse gases than fossil fuels. However, in the long-term, hydropower has a smaller climate benefit compared to methane emissions.

SourceAmerican Chemical Society·JournalEnvironmental Science & Technology·DateNov 13, 2019

Teaching group work to students with autism

A study by Kristina Scott found that a structured group work protocol increased social interactions among four children with ASD, aged 10-11, who had been excluded from peer groups. The protocol helped them maintain meaningful conversations with peers, although three of the subjects returned to baseline after the experiment.

SourceDe Gruyter·JournalOpen Education Studies·DateNov 13, 2019

Climate change influenced rise and fall of Northern Iraq's Neo-Assyrian Empire

A new study suggests that climate change played a role in the collapse of the Neo-Assyrian Empire by exacerbating agricultural productivity declines. The research used high-resolution paleoclimate records from northern Iraq to show that a megadrought may have encouraged invading armies and led to political unrest.

Analysis of melanoma in US by age groups

A study analyzing US melanoma data found a decline in adolescent and young adult cases between 2006 and 2015, while older adults experienced an increase in melanoma rates during the same period. The research used registry data to determine age-specific annual rates of melanoma.

SourceJAMA Network·JournalJAMA Dermatology·DateNov 13, 2019

Use changes after recreational marijuana legalization

After recreational marijuana legalization, past-year cannabis use disorder among 12-17 year-olds increased from 2.18% to 2.72%. Frequent marijuana use among 26+ year-olds also increased, from 2.13% to 2.62%, and those with cannabis disorder rose from 0.90% to 1.23%. No association found among 18-25 year-olds.

SourceJAMA Network·JournalJAMA Psychiatry·DateNov 13, 2019

Rising from the ashes

A new study reveals European ash has moderately good resistance to the Emerald Ash Borer (EAB), a beetle that has devastated ash species in the USA and some parts of Russia. The research found that European ash can restrict EAB development, while also exhibiting similar resistance to Manchurian ash.

SourceJohn Innes Centre·JournalPlants People Planet·DateNov 13, 2019