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Science News Archive 2021 - Page 435


Page 435 of 510

You've got to move it, move it

Researchers found that light-intensity physical activity, such as gardening or walking, may protect mobility in older women. Women who spent the most time performing light-intensity activities had a 46% lower risk of mobility loss compared to those with lower levels of physical activity.

SourceUniversity of California - San Diego·JournalJAMA Network Open·DateFeb 23, 2021

LSU Health New Orleans study finds disadvantaged census tracts linked to COVID incidence

A new LSU Health New Orleans study found a positive association between social vulnerability and COVID-19 incidence at the census tract level. Census tracts with higher levels of social vulnerability were associated with higher COVID-19 cumulative incidence, suggesting targeted interventions could reduce transmission in vulnerable popu...

SourceLouisiana State University Health Sciences Center·JournalFrontiers in Public Health·DateFeb 23, 2021

New strategy blocks chronic lung disease in mice

Researchers at WashU Medicine have found a new way to block chronic lung diseases such as asthma and COPD by targeting the packaging of inflammatory cytokines in exosomes. By blocking the release of these packaged cytokines, they can prevent damage to the lungs and slow disease progression in mice.

SourceWashU Medicine·JournalJCI Insight·DateFeb 23, 2021

Green revolution in electronic displays expected to ease energy and health crises

New strategies aim to achieve ideal bistable electrochromic systems for green displays. Researchers explore various approaches, including material design optimization, indirect EC systems, and device structure improvements. The goal is to overcome technical bottlenecks and enable widespread adoption of sustainable displays.

Spintronics: New production method makes crystalline microstructures universally usable

A new production method developed by physicists at Martin Luther University Halle-Wittenberg enables the transfer of crystalline microstructures to any material, advancing the production of smaller, faster, and more energy-efficient components. The method has potential applications in spintronics, magnonics, and hybrid components.

SourceMartin-Luther-Universität Halle-Wittenberg·JournalApplied Physics Letters·DateFeb 23, 2021

'Good bacteria' in breast milk changes over time

Scientists have identified a range of microbiome species never before detected in human milk, which change significantly between early and late lactation. These bacteria are thought to protect the infant gastrointestinal tract and improve aspects of long-term health, such as allergy prevention and toxin resistance.

SourceMcGill University·JournalFrontiers in Microbiology·DateFeb 23, 2021

Incarceration is strongly linked with premature death in US

A new study by Columbia University's Mailman School of Public Health found a strong association between jail incarceration and death rates from various causes in the US. The research estimated that every 1,000 population increase in local jail incarceration rate was associated with significant increases in mortality rates from infectio...

SourceColumbia University's Mailman School of Public Health·JournalThe Lancet Public Health·DateFeb 23, 2021

Give the heart a ketone? It may be beneficial

Emerging evidence suggests ketone bodies exert protective effects on patients with heart disease, potentially providing a safer alternative to the keto diet. Increasing circulating ketone levels through multiple mechanisms may offer therapeutic advantages in reducing cardiovascular risk factors.

SourceAmerican College of Cardiology·JournalJournal of the American College of Cardiology·DateFeb 23, 2021

A memory without a brain

Researchers have identified how Physarum polycephalum, a single-celled organism, stores and retrieves information about its environment through its network architecture. The slime mold weaves memories of food encounters into the architecture and uses stored information to make future decisions.

SourceTechnical University of Munich (TUM)·JournalProceedings of the National Academy of Sciences·DateFeb 23, 2021

Traditional hydrologic models may misidentify snow as rain, new citizen science data shows

A new study published in Frontiers in Earth Science uses citizen science data to identify the temperature cutoff between rain and snow in winter storms in the Lake Tahoe region of the Sierra Nevada. The results show that a warmer temperature threshold of 39.5°F may be more accurate for predicting precipitation in this region.

SourceDesert Research Institute·JournalFrontiers in Earth Science·DateFeb 22, 2021

Magnetic effect without a magnet

Researchers find giant Hall effect in material Ce3Bi4Pd3, exceeding theoretical predictions by a thousand times. The effect is caused by complex electron interactions and the Kondo effect, leading to unexpected potential for next-generation quantum technologies.

SourceVienna University of Technology·JournalProceedings of the National Academy of Sciences·DateFeb 22, 2021

Focus on the positive to improve classroom behavior

A University of Missouri five-year study found that focusing on positive encouragement in the classroom reduces disruptive behavior and improves students' academic and social outcomes. The study implemented a classroom behavior management training intervention, resulting in decreased disruptions and increased student engagement.

SourceUniversity of Missouri-Columbia·JournalJournal of Educational Psychology·DateFeb 22, 2021