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Science News Archive April 2025 - Page 29


Page 29 of 51

Photonic computing needs more nonlinearity: acoustics can help

Scientists have developed an all-optical activation function based on sound waves for photonic computing, enabling the creation of energy-efficient artificial intelligence systems. This breakthrough could potentially facilitate the scaling up of physical computing systems and pave the way for more efficient optical neural networks.

SourceMax Planck Institute for the Science of Light·JournalNanophotonics·TypeExperimental study·DateApr 14, 2025

Scientists trace hailstone origins using chemical fingerprints, overturning decades-old theories

A team of scientists analyzed chemical signatures in hailstones to determine their growth histories, finding most hailstones follow simple trajectories rather than the previously assumed recycling motion. The study identified key thresholds for hail growth and suggests that strong updrafts are essential for severe hailstorms.

SourceInstitute of Atmospheric Physics, Chinese Academy of Sciences·JournalAdvances in Atmospheric Sciences·DateApr 14, 2025

The gut health benefits of sauerkraut

A study published in Applied and Environmental Microbiology suggests that sauerkraut's metabolites can maintain intestinal cell integrity and support long-term gut health. The researchers found that both store-bought and lab-made sauerkraut samples protected gut function, with no noticeable difference between the two.

SourceUniversity of California - Davis·JournalApplied and Environmental Microbiology·DateApr 14, 2025

Do neurons transmit light?

Scientists investigate whether living neurons can transport light through their axons, which would significantly change current models of the nervous system. If successful, it could have major implications for treating brain diseases and healing the brain.

Research Spotlight: Comparison of single-cell profiling methods reveals strengths and limitations

The study directly compared Droplet-based scRNA (D-scRNA) and Picowell-based scRNA (P-scRNA) platforms for analyzing human mucosal biopsies. D-scRNA provides more detailed insights, but requires resources and may introduce contamination. P-scRNA is gentler, more resource-efficient, but less effective in capturing rare cell types.

SourceBrigham and Women's Hospital·JournalCellular and Molecular Gastroenterology and Hepatology·TypeObservational study·DateApr 14, 2025

One firearm injury was treated every 30 minutes in emergency departments in a study of 10 jurisdictions

A cross-sectional analysis found firearm injury-related ED visits occurring approximately every 30 minutes between 2018 and 2023. Rates were highest during evenings, weekends, holidays, and summer months. Temporal patterns may inform health care staffing and emergency preparedness to reduce mortality rates.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·TypeNews article·DateApr 14, 2025

Using artificial intelligence (AI) to conduct classroom intelligent analysis of real classrooms

Researchers from East China Normal University developed an AI-driven system to analyze classroom videos, revealing teacher-centered instruction prevails in primary and secondary schools. The study also found that older students engage less in critical discussions and more in structured questions.

SourceECNU Review of Education·JournalECNU Review of Education·TypeData/statistical analysis·DateApr 14, 2025

​​​​​​​Recently discovered immune cell type is key to understanding food allergies

A new study reveals that a special group of cells in the intestines, called tolerogenic dendritic cells, play a key role in preventing food allergies. These cells help to suppress immune responses to food proteins, enabling them to pass through the body without triggering an allergic reaction.

SourceNYU Langone Health / NYU Grossman School of Medicine·JournalNature·TypeExperimental study·DateApr 14, 2025

New study finds surprising way to curb college-aged drinking harms—without cutting alcohol

Researchers developed an intervention called Counter-Attitudinal Advocacy (CAA) to curb college-aged drinking harms by shifting how young adults think. CAA was found to reduce alcohol-related consequences, but not consumption, and is a complementary approach to Personalized Normative Feedback.

SourceBrown University·JournalJournal of Consulting and Clinical Psychology·TypeRandomized controlled/clinical trial·DateApr 14, 2025

UH researcher unveils new model to evaluate impact of extreme events and natural hazards

A new numerical computer model tracks how pollution travels through Galveston Bay, helping scientists understand water movement in estuaries. The model is critical for evaluating climate variability and sea level fluctuation impacts on coastal communities, guiding better decisions to keep water clean and prevent flooding.

SourceUniversity of Houston·JournalEnvironmental Science and Pollution Research·DateApr 14, 2025

Harnessing photocatalysis: Hydrogen generation and organic synthesis explored through a new database

A new database has been created to summarize progress in selective dehydrogenation of organic compounds through photocatalysis, enabling the accurate ranking of photocatalytic systems. The database contains 236 entries and provides insights into future directions for the field, including identifying promising photocatalysts and reactions.

Marshall researchers explore gut microbiota’s role in sleep apnea in new review published in Sleep Medicine

A new review from Marshall University researchers highlights emerging connections between gut health and sleep apnea, pointing to potential new therapeutic approaches for managing this common disorder. Alterations in gut microbiota composition have been consistently observed in individuals with sleep apnea, inducing systemic inflammati...

SourceMarshall University Joan C. Edwards School of Medicine·JournalSleep Medicine·TypeLiterature review·DateApr 14, 2025

New study reveals wealth inequality’s deep roots in human prehistory

A new study led by Washington State University archaeologist Tim Kohler challenges traditional views that disparities in wealth emerged suddenly with large civilizations. The research found that wealth inequality started to increase roughly 1,500 years after the advent of agriculture, driven by population growth and competition for land.

SourceWashington State University·JournalProceedings of the National Academy of Sciences·DateApr 14, 2025

Study explores how food manufacturers respond to state regulations

A new study from the University of Illinois examines how food manufacturers navigate different state regulations, revealing four response options: updating products, maintaining separate versions, removing from stricter markets, or ignoring regulations. The researchers found that firms choose their responses based on factors like cost ...

New guidance on diagnosing malnutrition in critically ill adults

A new set of guidance statements has been published for diagnosing malnutrition in critically ill adults, aiming to provide a consistent approach to identifying malnutrition. The guidelines consider both phenotypic and etiologic factors, emphasizing the importance of assessment and reporting of malnutrition variables.

SourceUniversity of Pennsylvania School of Nursing·JournalJournal of Parenteral and Enteral Nutrition·DateApr 14, 2025

Do disasters delay early cancer diagnoses?

A recent analysis found that rates of colorectal cancer diagnoses dropped during Hurricanes Irma and Maria and the COVID-19 pandemic in Puerto Rico, but late-stage diagnoses eventually exceeded expectations. Limited access to cancer screening services due to these disasters likely hindered timely CRC diagnoses.

SourceWiley·JournalCancer·DateApr 14, 2025

High blood pressure? Eat more bananas

Increasing dietary potassium and reducing sodium can effectively regulate blood pressure, according to a new mathematical model developed by the University of Waterloo. The study suggests that a higher ratio of potassium to sodium intake may be more effective for lowering blood pressure than simply reducing sodium intake.

Researchers may have solved decades-old mystery behind benzodiazepine side effects

A research team has identified a key protein suspected to be involved in benzodiazepine-related inflammation, which could inform strategies to improve benzodiazepine drug design and treat inflammation-related conditions. The findings may lead to new treatments for diseases such as Alzheimer's, arthritis, and multiple sclerosis.

SourceVirginia Commonwealth University·JournalProceedings of the National Academy of Sciences·DateApr 14, 2025

Structural optimization of microfluidic chips for enhancing droplet manipulation and observation via electrodynamics simulation

A study presents a versatile electrodynamics simulation model to analyze driving forces in partially filled electrodes, optimizing structural parameters of digital microfluidic chips. The model reveals the effects of dielectric layer parameters, droplet electrical properties, and substrate spacing on droplet driving performance.

SourceBeijing Institute of Technology Press Co., Ltd·JournalCyborg and Bionic Systems·DateApr 14, 2025