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Science News Archive 2023 - Page 411


Page 411 of 444

AI technologies have even more exaggerated biases in perception of facial age than humans

A recent study found that AI technologies exhibit more pronounced biases in facial age perception than humans, with exaggeration of smiling faces' aging effect and decreased accuracy for older adults. The research suggests these biases stem from visual cues rather than preconceptions.

SourceBen-Gurion University of the Negev·JournalScientific Reports·TypeComputational simulation/modeling·DateJan 31, 2023

Study finds large gap in breast cancer treatment recommendations for patients aged 70 vs 69

Researchers analyzed over 500,000 patient records and found that patients diagnosed at age 70 were nearly twice as likely to be passed over for post-surgical radiation therapy. This significant gap in treatment recommendations suggests that cognitive heuristics play a major role in physician decision-making.

SourceAmerican Society for Radiation Oncology·JournalInternational Journal of Radiation Oncology*Biology*Physics·DateJan 31, 2023

Scientists document two separate reservoirs of latent HIV in patients

Researchers have identified a distinct latent reservoir of HIV-infected CD4+ T cells in the central nervous system (CNS), separate from the latent reservoir in blood and lymph tissue. This finding highlights a new challenge in creating a cure for HIV, as any curative therapy would need to activate both dormant reservoirs.

SourceUniversity of North Carolina Health Care·JournalNature Microbiology·TypeObservational study·DateJan 31, 2023

Bot gives nonnative speakers the floor in videoconferencing

A new study at Cornell University introduced an automated participant that periodically interrupts the conversation to give nonnative speakers a chance to speak. The AI bot increased participation from 12% to 17% of all words spoken, with nonnative speakers feeling valued and appreciated for their perspectives.

SourceCornell University·JournalProceedings of the ACM on Human-Computer Interaction·DateJan 31, 2023

Seawater split to produce green hydrogen

A team of researchers has successfully produced green hydrogen from seawater without pre-treatment, achieving nearly 100% efficiency. This breakthrough uses a non-precious and cheap catalyst in a commercial electrolyser, offering a solution to directly utilize seawater for hydrogen production.

SourceUniversity of Adelaide·JournalNature Energy·DateJan 31, 2023

The social code—deciphering the genetic basis of hymenopteran social behavior

A study published in Genome Biology and Evolution found a core genetic toolkit for reproductive division of labor in rudimentary insect societies. The authors identified common genes associated with fundamental social divisions in bees and wasps, suggesting a universal molecular 'theme' for cooperation across species.

SourceSMBE Journals (Molecular Biology and Evolution and Genome Biology and Evolution)·JournalGenome Biology and Evolution·TypeExperimental study·DateJan 31, 2023

Elucidation of electrolyte decomposition behavior in all-solid-state lithium-sulfur batteries

Researchers at Toyohashi University of Technology elucidated the decomposition behavior of electrolytes in cathode composites of all-solid-state lithium-sulfur batteries. The sulfide solid electrolytes convert to thiophosphates with long-chain cross-linked sulfur during charging and discharging cycles, governing battery performance.

SourceToyohashi University of Technology (TUT)·JournalChemistry of Materials·TypeExperimental study·DateJan 31, 2023

When bugs swipe left

Researchers discovered a single protein called Gr8a that plays an inhibitory role in mating decision-making, helping flies avoid inter-breeding with the wrong partner. The findings provide insight into how signal production and perception are tied together, shedding light on pheromone communication.

SourceWashington University in St. Louis·JournaliScience·TypeExperimental study·DateJan 31, 2023

Measuring changes in brain tissue oxygenation for personalized cancer radiotherapy

Researchers developed a method to measure individual biological response to therapy using functional near-infrared spectroscopy, enabling real-time evaluation of radiotherapy's impact on patients. This technique allows for tailored radiation doses to optimize treatment and improve outcomes.

SourceSPIE--International Society for Optics and Photonics·JournalJournal of Biomedical Optics·TypeExperimental study·DateJan 31, 2023

With rapidly increasing heat and drought, can plants adapt?

A new study by University of California, Berkeley researchers suggests that iconic desert plants came preadapted to stresses of arid living. The rock daisy study found these pioneers developed adaptations on dry, exposed rock outcrops within older areas, making it easier for them to thrive in expanding deserts.

SourceUniversity of California - Berkeley·JournalProceedings of the National Academy of Sciences·TypeSurvey·DateJan 31, 2023

Can a computer teach babies to count?

A two-year study by Rutgers researcher Jinjing Jenny Wang found that babies between 14 and 19 months old benefit from watching counting videos, engaging them with real-life scenarios. The study's findings suggest these videos could reduce disparities in children who may not receive enough counting exposure from caregivers.

SourceRutgers University·JournalDevelopmental Psychology·DateJan 31, 2023

Google's and Apple's tightrope walk between enforcement and oversight as distributors and developers for health apps

The EU's Medical Devices Regulation and Digital Markets Act pose challenges for Google and Apple, which must balance enforcement and oversight with their interests as distributors and developers. New regulations aim to improve app store models and ensure safe provision of digital health applications.

SourceTechnische Universität Dresden·Journalnpj Digital Medicine·DateJan 31, 2023

SwRI investigations reveal more evidence that Mimas is a stealth ocean world

Numerical simulations suggest that Mimas' Herschel impact basin is compatible with a thinning ice shell and geologically young ocean. The results imply that the present-day ocean within Mimas must have been warming and expanding since its formation, potentially making it an emerging ocean world.

SourceSouthwest Research Institute·JournalGeophysical Research Letters·TypeComputational simulation/modeling·DateJan 31, 2023

Kobe University and AGC successfully convert dry cleaning solvent into useful chemical compounds

Researchers developed a new photo-oxidation method to efficiently synthesize pharmaceutical intermediates and polyurethane from perchloroethylene, a common dry cleaning solvent. The method yields high-quality compounds with minimal environmental impact, offering a promising alternative for sustainable chemical recycling.

SourceKobe University·JournalACS Omega·TypeExperimental study·DateJan 31, 2023

‘Ghostly mirrors’ for high-power lasers

Researchers have developed a new way to produce mirrors that can withstand extremely high powers, enabling the creation of small footprint, ultra-high-power laser systems. This breakthrough has significant implications for various fields such as medicine, biology, and physics.

SourceUniversity of Strathclyde·JournalCommunications Physics·TypeExperimental study·DateJan 31, 2023

Study suggests side-effects and costs are biggest concerns for users of HIV pre-exposure prophylaxis

Men who would use PrEP prefer long-acting injectable medications due to lower cost and reduced side effects. The survey found that respondents ranked costs and potential side effects as the most important factors in considering whether to take PrEP, with a preference for lower-cost options.

SourceJohns Hopkins Bloomberg School of Public Health·JournalAIDS and Behavior·TypeSurvey·DateJan 31, 2023

Ancient fossils shed new light on evolution of sea worm

Fossils of a type of sea worm, Iotuba chengjiangensis, have provided new insights into the evolution of annelid worms. The discovery suggests that these worms diversified into different lineages around 515 million years ago, during the Cambrian explosion.

SourceDurham University·JournalProceedings of the Royal Society B Biological Sciences·TypeObservational study·DateJan 31, 2023

Deer browsing is just one of many factors shaping North American forests

A recent study published in Forest Ecology and Management found that deer browsing had relatively little long-term impact on two tree species in a northern forest. Researchers discovered that seedling survival and growth were more greatly influenced by light availability, soil nitrogen, and size attained before gaps were created.

SourcePenn State·JournalForest Ecology and Management·TypeObservational study·DateJan 31, 2023

Researchers create first supermode optical resonator

The new optical resonator developed by Capasso's team provides precise control over the mode of light and enables multi-mode coupled light to exist within the resonator. This breakthrough could influence how resonators are understood and open doors for new capabilities, including fundamental physics experiments and manipulation of mate...

Breaking the temperature barrier of hydrothermal carbonization of lignocellulosic biomass

Researchers from Tsinghua University develop a new strategy to decouple temperature and pressure in hydrothermal carbonization, breaking the temperature limit. This process produces high-quality carbon microspheres with abundant oxygen-containing functional groups and good thermal stability, suitable for various applications including ...

SourceKeAi Communications Co., Ltd.·JournalGreen Energy & Environment·TypeExperimental study·DateJan 30, 2023

Tweezers untangle chemotherapeutic’s impact on DNA

Etoposide's impact on DNA structure has been untangled by Cornell researchers using optical tweezers and magnetic tweezers. The study found that etoposide promotes DNA loop trapping and barrier formation by topoisomerase II, enabling the creation of sensitive screening tools for improving patient treatment.

SourceCornell University·JournalNature Chemical Biology·DateJan 30, 2023

People with arthritis 20% less likely to be in work

A new study published by the University of Leeds reveals that people with arthritis are 20% less likely to be in work compared to their peers without the condition. The most striking finding is that non-university educated women aged 60-plus are at least 37% less likely to be in work if they have arthritis.

SourceUniversity of Leeds·JournalSocial Science & Medicine Part C Medical Economics·DateJan 30, 2023