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Science News Archive 2023 - Page 430


Page 430 of 444

Deep meditation may alter gut microbes for better health

A study found that Tibetan Buddhist monks with long-term deep meditation practice had distinct gut microbiome profiles, associated with lower risks of anxiety, depression, and cardiovascular disease. Their gut microbiota was enriched with beneficial bacteria that may influence mental health.

SourceBMJ Group·JournalGeneral Psychiatry·TypeObservational study·DateJan 16, 2023

Research shows how hospitals can speed up surgery times with separate patient preparation

Researchers at the University of Bath show that separating patient preparation from operating theatre schedules can significantly improve theatre availability and reduce waiting times. The study found a 40% improvement in theatre idle times and benefits for patient waiting times when surgery procedures are reconfigured.

SourceUniversity of Bath·JournalOmega·TypeComputational simulation/modeling·DateJan 16, 2023

How gut bacteria evade the immune system

Researchers identified a new type of flagellin in the human gut that binds to Toll-like receptor 5 without inducing an inflammatory response. This discovery provides a mechanism for the immune system to tolerate beneficial microbes while remaining responsive to pathogens.

SourceMax-Planck-Gesellschaft·JournalScience Immunology·TypeMeta-analysis·DateJan 16, 2023

20,000 premature US deaths caused by human-ignited fires

A study published in Environmental Research Letters finds that human-ignited fires are responsible for over 67% of small smoke particles called PM2.5 in the US, leading to 20,000 premature deaths annually. The research highlights the need for ignition-focused management plans to reduce human-ignited fires and minimize health impacts.

SourceIOP Publishing·JournalEnvironmental Research Letters·DateJan 16, 2023

Astronomers capture radio signal from distant galaxy

Researchers detect radio signal from record-breaking distance galaxy, measuring gas composition and gaining insights into the early universe. The signal was amplified by a factor of 30 using gravitational lensing, allowing scientists to study a previously inaccessible region.

SourceMcGill University·JournalMonthly Notices of the Royal Astronomical Society·TypeComputational simulation/modeling·DateJan 16, 2023

Researchers produce first-ever toolkit for RNA sequencing analysis using a ‘pantranscriptome’

A new toolkit enables researchers to map individual RNA data to a more diverse 'pantranscriptome', addressing reference bias and increasing the accuracy of gene expression mapping. This approach builds on pangenomics, allowing for the comparison of an individual's genome to genetically diverse cohorts of reference sequences.

SourceUniversity of California - Santa Cruz·JournalNature Methods·DateJan 16, 2023

From octopus to elephant: a molecular zoo of epigenetics

Scientists have mapped and analyzed DNA methylation profiles in 580 different animal species, providing insights into the evolutionary conservation of epigenetic mechanisms. The study reveals that DNA methylation constitutes a cancer-protective mechanism in large animals with long lifespans, contradicting Peto's paradox.

New smartphone app designed by University of Toronto researchers shown to significantly improve memory recall

Researchers developed HippoCamera, a new smartphone app that significantly improves memory recall by boosting attention to daily events. Users record videos and audio descriptions of everyday experiences, which are then replayed to reinforce memory consolidation.

SourceUniversity of Toronto·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateJan 16, 2023

Leonardo da Vinci’s paradox cracked

Researchers from the University of Seville and Bristol have discovered a mechanism to explain the unstable movement of air bubbles rising in water. The simulations closely match high-precision measurements, revealing that bubbles deviate from straight-line motion when their spherical radius exceeds 0.926 millimeters.

SourceUniversity of Seville·JournalProceedings of the National Academy of Sciences·DateJan 16, 2023

How the last 12,000 years have shaped what humans are today

The shift from foraging to farming led to increased conflict, violence, and infectious diseases. Humans adapted genetically to dairy consumption around 5,000 years ago, while early agricultural communities faced social challenges, including limited diets and kinship organization.

SourceOhio State University·JournalProceedings of the National Academy of Sciences·TypeCommentary/editorial·DateJan 16, 2023

Frequent visits to green space linked to lower use of certain prescription meds

Research published in Occupational & Environmental Medicine found that frequent visits to urban green spaces were associated with lower use of prescription meds for depression, anxiety, insomnia, high blood pressure, and asthma. The frequency of green space visits was linked to a significant reduction in medication use, particularly am...

SourceBMJ Group·JournalOccupational and Environmental Medicine·TypeObservational study·DateJan 16, 2023

New study questions whether toddlers choose to help dogs impulsively

A team of scientists from the USA conducted a study on toddlers' behavior towards helping dogs. The researchers found that children aged 2-3 years were twice as likely to help a dog reach a treat or toy when it showed interest, with factors such as the dog's liveliness and the object being a treat increasing the likelihood of assistance.

SourceCABI·JournalHuman-Animal Interactions·TypeExperimental study·DateJan 15, 2023

Computers reimagined

Prof. Shahar Kvatinsky's neuromorphic chip integrates storage and processing functionalities, achieving 97% handwritten letter recognition accuracy with low energy consumption. The chip's design enables potential applications in camera sensors, eliminating the need for digital image enhancement.

SourceTechnion-Israel Institute of Technology·JournalNature Electronics·TypeExperimental study·DateJan 15, 2023

At-home bowel cancer tests could help reduce colonoscopies

A new study found that multiple negative faecal immunochemical tests can significantly reduce the risk of advanced neoplasia in a colonoscopy surveillance program. This could lead to longer intervals between screenings for people at above-average risk, reducing the burden on healthcare systems.

SourceFlinders University·JournalClinical Gastroenterology and Hepatology·TypeData/statistical analysis·DateJan 15, 2023

Chronic pain management program delivered by ‘coaches’ improves outcomes

A new study from Flinders University found that a telehealth program delivering individualized coaching improves self-management and reduces suffering for people with chronic pain. The program, called Rethinking Pain, provides access to care and support for those living in rural areas who face long wait times for specialist care.

SourceFlinders University·JournalPain and Therapy·TypeObservational study·DateJan 15, 2023

When migrating birds go astray, disturbances in magnetic field may be partly to blame

Researchers found a strong correlation between birds captured outside their expected range and geomagnetic disturbances. The study suggests that birds rely on magnetoreceptors for navigation, which can be affected by solar activity and other factors. This knowledge can help scientists understand threats to birds and the ways they adapt.

SourceUniversity of California - Los Angeles·JournalScientific Reports·DateJan 13, 2023

Support from others in stressful times can ease impact of genetic depression risk, study suggests

A recent study found that social support has a significant impact on depression risk, particularly in individuals with high genetic risk scores. The research used data from two groups: first-year doctors and recently widowed older adults, showing that those who gained social support during stressful times had lower depressive symptoms.

SourceMichigan Medicine - University of Michigan·JournalAmerican Journal of Psychiatry·TypeData/statistical analysis·DateJan 13, 2023

A strong ethnic identity can buffer or bolster the effects of online sexual racism in Black men

A recent study found that strong ethnic identity can buffer feelings of depression and low self-worth when Black men experience sexual objectification by white men online. Conversely, a strong commitment to ethnicity intensified feelings of low self-worth when rejected by those of their own race.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalInternational Journal of Environmental Research and Public Health·TypeSurvey·DateJan 13, 2023

AI discovers new nanostructures

Researchers at Brookhaven National Laboratory have successfully discovered new materials using artificial intelligence and self-assembly. The AI-driven technique led to the discovery of three new nanostructures, expanding the scope of self-assembly's applications in microelectronics and catalysis.

SourceDOE/Brookhaven National Laboratory·JournalScience Advances·DateJan 13, 2023

Breathing supercapacitor

Researchers have created a supercapacitor that combines high power and energy density using a 'breathing' electrode with chlorine gas. The new device achieves rapid charge separation and mass transfer, increasing its energy storage capacity.

SourceWiley·JournalAngewandte Chemie International Edition·TypeExperimental study·DateJan 13, 2023