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Science News Archive August 2020 - Page 21


Page 21 of 45

OCT-based technique captures subtle details of photoreceptor function

Researchers developed a new instrument to measure tiny light-evoked deformations in individual rods and cones, offering potential for earlier detection of retinal diseases. The system combines high-speed OCT imaging with adaptive optics technology to capture photoreceptor responses, paving the way for improved diagnosis and treatment.

SourceOptica·JournalOptics Letters·DateAug 18, 2020

Bird skull evolution slowed after the extinction of the dinosaurs

A recent study challenges the notion that birds evolved rapidly following the mass extinction of non-avian dinosaurs. Instead, researchers found that bird skull evolution actually slowed down compared to non-avian dinosaurs. This slower pace of evolution is attributed to adaptations in beak shape and size.

SourcePLOS·JournalPLOS Biology·DateAug 18, 2020

NIH study suggests opioid use linked to pregnancy loss, lower chance of conception

A National Institutes of Health study has found that women trying to conceive who use opioids are more likely to experience lower chances of achieving pregnancy and an increased risk of miscarriage during early pregnancy. Opioid use was associated with a 29% lower chance of becoming pregnant within a given monthly cycle.

Dynamic full-field optical coherence tomography: 3D live-imaging of retinal organoids

Researchers developed a new imaging modality for in-development retinal organoids using D-FFOCT, which offers high spatial and temporal resolutions. The technique allows for the creation of highly contrasted images of almost transparent samples without labels, enabling long-term study of sample development.

Smartphones can tell when you're drunk by analyzing your walk

A new study published in the Journal of Studies on Alcohol and Drugs found that smartphones can detect changes in gait patterns associated with alcohol intoxication. The research suggests that real-time information about alcohol consumption could be used to reduce harm, prevent drinking and driving, or alert a sponsor for someone in tr...

SourceJournal of Studies on Alcohol and Drugs·JournalJournal of Studies on Alcohol and Drugs·DateAug 18, 2020

Ultrafast hydrogen bond dynamics of liquid water revealed by THz-induced Kerr effect

A team of scientists used THz pulses to study the intermolecular motion of liquid water, revealing a hydrogen bond harmonic oscillator model and polarizability anisotropy on sub-picosecond scales. The results provide insights into the transient structure of liquid water and its interaction with solvent molecules.

Naming guides how 12-month-old infants encode and remember objects

Infants as young as 12 months old encode and remember objects differently depending on whether an object is named as a member of a category or as a unique individual. Research found that applying distinct names to each object enhances infants' encoding of distinctions among the individual objects, leading to better recognition memory.

SourceNorthwestern University·JournalProceedings of the National Academy of Sciences·DateAug 18, 2020

Exploding stars may have caused mass extinction on Earth, study shows

A new study led by University of Illinois astronomer Brian Fields explores the possibility that astronomical events were responsible for an extinction event 359 million years ago. Researchers found evidence suggesting long-lasting ozone-depletion, which could be caused by killer cosmic rays from nearby supernovae.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalProceedings of the National Academy of Sciences·DateAug 18, 2020

Heart attack damage reduced by shielded stem cells

Researchers from Rice University and Baylor College of Medicine have shown that shielding stem cells with a novel biomaterial can significantly enhance the healing process in rodents after heart attacks. The study demonstrated that shielded stem cells resulted in 2.5 times greater heart function recovery compared to non-shielded cells ...

SourceRice University·JournalBiomaterials Science·DateAug 18, 2020

Swans reserve aggression for each other

Researchers studied three swan species and found all were most frequently aggressive to their own kind, suggesting similar individuals compete for resources. The findings provide insight into how swan behavior affects other waterbirds over winter and highlight the importance of understanding bird competition.

SourceUniversity of Exeter·JournalAvian Research·DateAug 18, 2020