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Science News Archive September 2019 - Page 22


Page 22 of 43

Victorian hog deer genetics revealed

A study by La Trobe University researchers has found that hog deer introduced to Victoria in the 1860s are comprised entirely of hog deer and chital hybrids. The discovery could affect conservation efforts, as the hybrid species is fertile and plays a crucial role in conserving the native range.

SourceLa Trobe University·JournalEcology and Evolution·DateSep 16, 2019

Hiding in plain sight

Early rice growers unwittingly selected for barnyard grass, which later evolved to mimic rice plants, allowing it to escape detection and spread globally. The study sequenced the genomes of rice-mimic and non-mimic forms of the weed to understand this process.

SourceWashington University in St. Louis·JournalNature Ecology & Evolution·DateSep 16, 2019

Measuring ethanol's deadly twin

Researchers at ETH Zurich have developed a handheld device that can detect methanol in alcoholic beverages and diagnose poisoning by analyzing exhaled breath. The device uses a small metal oxide sensor to distinguish between methanol and ethanol, with detection limits down to the legal limit.

SourceETH Zurich·JournalNature Communications·DateSep 16, 2019

Play equipment that gets kids moving

Research by University of Queensland found children with access to fixed play equipment like swings and slides are more likely to meet national physical activity guidelines. The type of play equipment at home is directly related to the amount of physical activity a child does.

SourceUniversity of Queensland·JournalJournal of Physical Activity and Health·DateSep 16, 2019

Physicians report high refusal rates for the HPV vaccine and need for improvement

A study from the University of Colorado School of Medicine found that physicians' delivery and communication practices must improve to boost HPV vaccine completion rates. Pediatricians who strongly recommend the vaccine have higher acceptance rates, and optimizing HPV delivery through standing orders and alert systems can also help.

Combination of wood fibers and spider silk could rival plastic

A new bio-based material has been created by combining wood cellulose fibres and spider silk protein found in spider web threads, exhibiting high strength and stiffness along with increased toughness. The researchers achieved this by aligning cellulose nanofibrils into a stiff scaffold and infiltrating it with a soft and energy-dissipa...

SourceAalto University·JournalScience Advances·DateSep 16, 2019

ACC issues principles for overcoming compensation, opportunity inequity

The American College of Cardiology has published its first health policy statement on cardiologist compensation and opportunity equity, aiming to advance fairness and improve patient care. The document outlines 17 principles for achieving equity in compensation and opportunity, including minimizing disparities and promoting equal acces...

SourceAmerican College of Cardiology·JournalJournal of the American College of Cardiology·DateSep 16, 2019

Renegade genes caught red handed

Researchers dispute the long-held belief that heterochromatin is a reliable guardian of the human genome. A study by University of Arizona researcher Keith Maggert reveals that heterochromatin can flicker on and off, allowing transposons to cause mutations and damage. This instability has significant implications for our understanding ...

SourceUniversity of Arizona·JournalProceedings of the National Academy of Sciences·DateSep 16, 2019

Economists find mixed values of 'thoughts and prayers'

A study by University of Wyoming economists found that Christian hurricane victims value prayers from religious strangers, while atheists and agnostics believe they are worse off. The research suggests that thoughts and prayers should be employed selectively to maximize their impact on recipient welfare.

SourceUniversity of Wyoming·JournalProceedings of the National Academy of Sciences·DateSep 16, 2019

To address hunger, many countries may have to increase carbon footprint

Researchers found that plant-forward diets can significantly reduce greenhouse gas emissions and water use, with even a two-thirds vegan diet having lower impacts than traditional lacto-ovo vegetarian diets. The study's findings emphasize the need for country-specific dietary shifts to address climate and nutrition crises.

SourceJohns Hopkins Bloomberg School of Public Health·JournalGlobal Environmental Change·DateSep 16, 2019

Renewable cement production

A new electrochemical process can decarbonate calcium carbonate to form alite and release hydrogen, oxygen, and carbon dioxide streams. This technology has the potential to significantly reduce or eliminate cement industry greenhouse gas emissions by capturing CO2 for sequestration or power generation.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateSep 16, 2019

Immune response depends on mathematics of narrow escapes

A new study reveals the narrow escape problem, a classic math puzzle, plays a key role in determining immune responses. The unique shape of T cells creates a close-contact zone for triggering molecules, and the size of this zone depends on the surface protrusions, keeping the process sensitive to invaders.

SourceMacquarie University·JournalProceedings of the National Academy of Sciences·DateSep 16, 2019

Just add water

Researchers at UC Santa Barbara and their international team have uncovered the mechanism behind doping organic semiconductors using Lewis acids. The discovery reveals that water plays a crucial role in this process, enabling scientists to design even better dopants for greater control over these materials.

SourceUniversity of California - Santa Barbara·JournalNature Materials·DateSep 16, 2019

NIH-funded study suggests teen girl 'night owls' may be more likely to gain weight

A new study funded by the National Institutes of Health found that teenage girls who go to bed later are more likely to gain weight compared to those who sleep earlier. The research also showed a significant association between late bedtime and increased waist size and body fat in young females.

Public attitudes toward police

Researchers conducted a randomized controlled trial in New Haven, Connecticut, where police officers made community policing visits to residents' homes. The study found that positive interactions improved public trust and cooperation with police, especially among black individuals and those with strong negative views towards the police.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateSep 16, 2019

Eating cheese may offset blood vessel damage from salt

A recent study published in the Journal of Nutrition found that consuming four servings of cheese per day alongside a high sodium diet may protect blood vessels from damage. The researchers discovered that antioxidants in cheese may play a role in preserving vascular health, providing an alternative strategy to reduce cardiovascular risk.

SourcePenn State·JournalJournal of Nutrition·DateSep 16, 2019

Acute chikungunya infection studied at the molecular level in Brazilian patients

Brazilian researchers used computational tools to analyze blood cells from patients infected with chikungunya virus, identifying genes associated with the disease and potential biomarkers of predisposition to chronic joint pain. The study suggests that certain gene signatures can be explored as therapeutic targets.