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Science News Archive November 2023 - Page 33


Page 33 of 40

An ammonia trail to exoplanets

A team of researchers has detected ammonia isotopologues in the atmosphere of a cold brown dwarf, providing new clues to understanding gas giant formation. The ratio of two isotopologues reveals that the exoplanet formed through gravitational collapse, challenging traditional theories.

SourceETH Zurich·JournalNature·DateNov 7, 2023

Study highlights optimal timing for assessing orthostatic hypotension in older adults and its impact on fall risk

A new study found that orthostatic hypotension assessments conducted after 4-6 minutes of standing are more informative for predicting fall risk in older adults. This timely assessment can help clinicians identify those at highest risk and institute appropriate interventions to reduce falls.

SourceHebrew SeniorLife Hinda and Arthur Marcus Institute for Aging Research·JournalJournal of the American Geriatrics Society·DateNov 6, 2023

Firearm injuries among children and adolescents lead to huge mental and behavioral health consequences

A study by Massachusetts General Hospital researchers found that child and adolescent survivors of firearm injuries experience significant increases in pain disorders, psychiatric disorders, and substance use disorders. Families of victims also face substantial mental health effects, including increased psychiatric disorders and health...

SourceMassachusetts General Hospital·JournalHealth Affairs·DateNov 6, 2023

Success of Wolbachia-infected mosquitoes in fighting dengue may be underestimated

Researchers analyzed a World Mosquito Program trial and found that excluding transmission dynamics likely underestimates the impact of Wolbachia-infected mosquitoes. The study suggests that true efficacy may be higher than initially reported, with potential reductions in dengue fever cases ranging from 77% to 94-97%.

SourceUniversity of Notre Dame·JournalBMJ Global Health·TypeComputational simulation/modeling·DateNov 6, 2023

Viano receives NSF CAREER Award

Samantha Viano, an Assistant Professor at George Mason University, has received a $1,044,599 NSF CAREER Award to investigate school policies and access to high school STEM credit recovery. The project aims to develop a theoretical framework for policymakers to improve outcomes for minoritized students in online credit recovery programs.

Doctors get tips on how to make healthcare greener

A new series by The BMJ offers actionable advice for doctors to make healthcare systems more sustainable. Practical actions include reducing nitrous oxide waste, using reusable vaginal speculums for cervical screening, and prescribing tablets over intravenous drugs.

SourceBMJ Group·JournalThe BMJ·TypeNews article·DateNov 6, 2023

Brain implant may enable communication from thoughts alone

A new speech prosthetic developed by Duke neuroscientists and engineers can translate brain signals into spoken words, improving communication for people with neurological disorders. The device achieved an accuracy rate of 40% in predicting intended speech from 90 seconds of brain activity.

SourceDuke University·JournalNature Communications·TypeExperimental study·DateNov 6, 2023

New study sheds light on Adélie penguins' reliance on declining sea ice during molt

Researchers have discovered a potential bottleneck in Adélie penguins' annual cycle, which could be exacerbated as the climate continues to change. The study found that seasonal Antarctic sea ice plays a crucial role in the penguins' molting periods, with low sea ice concentration signaling extended gaps in post-breeding diving activity.

SourcePoint Blue Conservation Science·JournalProceedings of the National Academy of Sciences·TypeObservational study·DateNov 6, 2023

The health and economic toll of gun violence in youth

A new study reveals that gunshot injuries among youth lead to significant increases in psychiatric disorders and healthcare spending. Family members of survivors experience long-lasting trauma effects, including a sharp increase in fathers' mental health visits after the loss of a child.

SourceHarvard Medical School·JournalHealth Affairs·TypeData/statistical analysis·DateNov 6, 2023

Shorter white blood cell telomeres linked to higher dementia risk

Researchers found that shorter white blood cell telomeres are associated with a higher risk of dementia, including Alzheimer's disease and vascular dementia. The study also reveals linear associations between telomere length and brain structure volume, highlighting telomere length as a potential biomarker of brain health.

SourceShanghai Jiao Tong University Journal Center·JournalGeneral Psychiatry·TypeRandomized controlled/clinical trial·DateNov 6, 2023

Black women teaching science find formula for incorporating anti-racist practices, study finds

A new study by NYU researchers found that Black women teaching science are finding innovative ways to combine traditional curricula with lessons on race, gender, and class inequities. They make cultural connections to science, encourage critical thinking, and provide historical contexts to help students understand the impact of systemi...

SourceNew York University·JournalJournal of Research in Science Teaching·TypeObservational study·DateNov 6, 2023

Threatened sharks and rays caught off Cyprus

Researchers found 22 globally threatened elasmobranch species in Cyprus' coastal waters, with simple measures like limiting net lengths crucial for sustainability. Local authorities have banned trading of 15 species, and conservation efforts are underway to protect the marine ecosystem.

SourceUniversity of Exeter·JournalFrontiers in Marine Science·TypeObservational study·DateNov 6, 2023

Chicago community violence intervention program shown to reduce gun violence

A study led by Northwestern University found that a Chicago-based community violence intervention program reduced gun violence involvement by over 73% among participants. The program's alumni showed the best outcomes, with a significant decrease in assaults, robberies, and other gun-related violence.

SourceNorthwestern University·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateNov 6, 2023

Scientists use SERS technology to accurately monitor single-molecule diffusion behavior

Researchers successfully monitored the diffusion behavior of a single molecule using SERS technology, enabling real-time analysis. The study found that crystalline violet molecules can be confined in sub-nanometer space, providing insights into molecular interactions and chemical reactions.

SourceHefei Institutes of Physical Science, Chinese Academy of Sciences·JournalThe Journal of Physical Chemistry Letters·DateNov 6, 2023

Decarbonizing light-duty transportation in the US: U-M study reveals strategies to achieve goal

A University of Michigan study found that meeting the 50% electric vehicle sales target by 2030 is possible, but not just through increased EV sales. The study suggests implementing additional strategies such as reducing vehicle production emissions and promoting walkable, bikeable cities to accelerate emission reduction. By 2035, a 45...

SourceUniversity of Michigan·JournalNature Communications·DateNov 6, 2023

High-performance surface enhanced raman scattering substrate proposed based on 2H-TaS2 and single-atom-layer gold clusters

Researchers have proposed a novel SERS substrate by intercalating single-atom-layer gold clusters into bilayer 2H-TaS2, achieving two orders of magnitude enhancement. The team found that the d-orbital electrons on the Au surface couple with neighboring 2H-TaS2, creating a strong local electromagnetic field.

SourceHefei Institutes of Physical Science, Chinese Academy of Sciences·JournalThe Journal of Physical Chemistry Letters·DateNov 6, 2023