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Science News Archive 2023 - Page 61


Page 61 of 444

‘Crowding out’ the competition: Study reveals surprising livestream chatting and tipping behavior

A new study by the University of Notre Dame found that viewers tend to tip less and chat more when they see others receiving higher tips, leading to a 'crowding-out' effect. This behavior is driven by the pursuit of social status and can be mitigated by splitting crowded livestreams into smaller virtual sessions.

SourceUniversity of Notre Dame·JournalProduction and Operations Management·DateNov 7, 2023

A new perspective on Petri net learning

A new approach called Net Learning uses deep neural networks to approximate the reachability set of Petri nets, avoiding the state space explosion problem. This allows for a probabilistic solution to be obtained without needing to solve the equivalent NP-Hard problems.

SourceHigher Education Press·JournalFrontiers of Computer Science·TypeExperimental study·DateNov 7, 2023

Assessing the sustainability of trade in wild-harvested plants

A method for assessing sustainability of wild-harvested plants is demonstrated on Nardostachys jatamansi, a critically endangered Himalayan perennial herb. The proposed process integrates ecological and trade data to estimate sustainability levels, suggesting cultivating-while-harvesting as an effective approach.

SourcePNAS Nexus·JournalPNAS Nexus·DateNov 7, 2023

PET scans may predict Parkinson’s disease and Lewy body dementia in at-risk individuals

Researchers used PET scans to detect low cardiac norepinephrine levels in individuals with Parkinson's risk factors, finding that those with low radioactivity were highly likely to develop Parkinson's or Lewy body dementia. The study suggests a potential biomarker for early detection and treatment of these diseases.

SourceNIH/National Institute of Neurological Disorders and Stroke·JournalJournal of Clinical Investigation·TypeObservational study·DateNov 7, 2023

Southern Alaska’s national forests key to meeting climate, conservation goals, OSU study shows

The study highlights the importance of protecting the Tongass and Chugach national forests in Southern Alaska, which provide habitat for iconic species like bald eagles, brown bears, and gray wolves. Increased protections for these forests are seen as key to mitigating climate change and preserving biodiversity.

SourceOregon State University·JournalAGU Advances·TypeData/statistical analysis·DateNov 7, 2023

Poetry can help people cope with loneliness or isolation

A study by the University of Plymouth and Nottingham Trent University found that reading and writing poetry had a substantial positive impact on participants' wellbeing during the pandemic. Poetry helped reduce feelings of loneliness, anxiety, and depression, as well as supporting social and cultural recovery.

SourceUniversity of Plymouth·JournalJournal of Poetry Therapy·TypeSystematic review·DateNov 7, 2023

Cracking the code: Genome sequencing reveals why songbirds are larger in colder climates

Scientists have unlocked the genetic basis underlying the remarkable variation in body size observed in song sparrows, one of North America's most familiar and beloved songbirds. The study found eight genetic variants associated with body mass, largely responsible for the nearly threefold difference in body size across the species' range.

SourceUniversity of British Columbia·JournalNature Communications·TypeObservational study·DateNov 7, 2023

Machine learning gives users ‘superhuman’ ability to open and control tools in virtual reality

Researchers from the University of Cambridge have developed a virtual reality application that allows users to build figures and shapes without interacting with menus. The 'HotGestures' system uses machine learning to recognize hand gestures, providing fast and effective shortcuts for tool selection and usage.

SourceUniversity of Cambridge·JournalIEEE Transactions on Visualization and Computer Graphics·DateNov 7, 2023

Colostrum key to saving beef calves from trouble

A recent study found that insufficient antibody transfer to newborn beef calves leads to negative health effects, including increased medical treatment needs and mortality rates. Researchers recommend beef calf-specific colostrum intervention strategies and better vaccine management for pregnant cows and heifers.

SourceNorth Carolina State University·JournalPreventive Veterinary Medicine·TypeObservational study·DateNov 7, 2023

Dual hydration of oceanic lithosphere

Oceanic lithosphere is hydrated through two stages: initial hydration at mid-ocean ridges and secondary hydration at subduction zones. The study found that subduction-related process contributes to most of the mantle hydration, playing a crucial role in plate tectonics and Earth's water cycle

SourceScience China Press·JournalNational Science Review·DateNov 7, 2023

Gwangju Institute of Science and Technology researchers develop metal-enhanced fluorescence probes for influenza a virus detection

Researchers at Gwangju Institute of Science and Technology developed metal-enhanced fluorescence probes for rapid and accurate detection of influenza viruses. The probes showed high sensitivity and specificity, detecting the virus even at low concentrations, with a remarkable accuracy of over 99%.

SourceGIST (Gwangju Institute of Science and Technology)·JournalACS Nano·TypeExperimental study·DateNov 7, 2023

Bisphenol A and asthma in mice

Researchers found that bisphenol A (BPA) inactivates microbial lipopolysaccharides (LPS), a key trigger for allergic asthma. This disruption increases susceptibility to asthma in mice, highlighting a potential link between BPA exposure and immune disorders.

SourcePNAS Nexus·JournalPNAS Nexus·DateNov 7, 2023

Communities of color suffer disproportionately higher pollution-related deaths

A new Northwestern University study estimates that approximately 171,000 premature deaths per year are linked to nitrogen dioxide (NO2) exposure, with a disproportionate number occurring in marginalized communities. The study found that NO2 pollution affects predominantly Black census tracts 47% higher than the national average.

SourceNorthwestern University·JournalEnvironmental Science & Technology Letters·TypeComputational simulation/modeling·DateNov 7, 2023

How a moth’s taste preferences change with age

Researchers discovered that cotton bollworm larvae use Gr10 to detect sucrose in low-sugar tissues, while adults primarily rely on Gr6 to sense a variety of sugars. This finding could lead to new approaches for pest control and increase crop yields.

SourceeLife·JournaleLife·DateNov 7, 2023

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