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Science News Archive 2021 - Page 262


Page 262 of 510

Olfactory virtual realities show promise for mental health practices and integrative care

A study published in the Journal of Medical Research and Health Sciences found that scent-enhanced virtual reality technologies can improve therapeutic benefits for chronic pain, anxiety, and mood disorders. Participants reported significant reductions in anxiety levels after OVR sessions, with improvements lasting up to three hours.

SourceUniversity of Vermont·JournalJournal of Medical Research and Health Sciences·DateJun 10, 2021

How cells measure themselves

Researchers found that cells regulate their own size by using DNA content as an internal scale. Cells with too little KRP4 delay DNA replication until they catch up, while those with too much dilute KRP4 to speed up the process. This mechanism keeps meristem cells within a narrow size range.

SourceJohn Innes Centre·JournalScience·DateJun 10, 2021

Soot from heaters and traffic is not just a local problem

A study by the Leibniz Institute for Tropospheric Research found that soot particles from oil and wood heating systems as well as road traffic contribute significantly to air pollution in Europe. The researchers estimated that 48% of local soot emissions and 52% of long-distance soot emissions reached the measurement site.

SourceLeibniz Institute for Tropospheric Research (TROPOS)·JournalAtmospheric Chemistry and Physics·DateJun 10, 2021

Moral disgust has a 'bad taste'

A study found that witnessing moral transgressions can inhibit tongue movements, similar to tasting something unpleasant. This reaction may reflect an avoidance-defensive mechanism, adapting as a response to shared moral norms.

SourceUniversità di Bologna·JournalSocial Cognitive and Affective Neuroscience·DateJun 10, 2021

Ion and lipid transporters specialize for their niche

Researchers have discovered that ion and lipid transporters have evolved distinct structural features to optimize the transport of their respective substrates. Crystal structures reveal a pump primed for dephosphorylation in Ca2+-ATPase, while a novel mechanism is uncovered in P4-ATPases, enabling efficient lipid flippase activity.

SourceAarhus University·JournalJournal of Molecular Biology·DateJun 10, 2021

Discovery of ray sperms' unique swimming motion and demonstration with bio-inspired robot

Researchers at City University of Hong Kong have discovered that ray sperms rotate both their head and tail to move, creating a heterogeneous dual helix propulsion system. This unique motion provides high environmental adaptability and efficiency, enabling bidirectional swimming and maneuverability in various viscosities.

SourceCity University of Hong Kong·JournalProceedings of the National Academy of Sciences·DateJun 10, 2021

Active platinum species

Researchers investigated individual platinum atoms and small clusters on special zeolite supports, finding they are significantly more active than larger clusters in splitting oxygen. Platinum clusters also dominate CO oxidation, while individual atoms enable efficient methane combustion.

SourceWiley·JournalAngewandte Chemie International Edition·DateJun 10, 2021

Researchers' algorithm to make CRISPR gene editing more precise

Researchers have developed a new method to select efficient gRNA molecules for CRISPR-Cas9 gene editing, achieving high efficiency and precision. The algorithm uses deep learning and large datasets to predict the efficiency of gRNAs, promising improved outcomes in genetic disorders and biotechnology applications.

New method makes generic polymers luminescent

Researchers have successfully developed a new method to give luminescent properties to generic polymers like polystyrene and polyethylene. The technique makes it possible to easily prepare luminescent polymers without complicated organic synthetic methods.

SourceHokkaido University·JournalAngewandte Chemie International Edition·DateJun 10, 2021

Three factors may predict college students' loss of self-control, WVU study finds

A West Virginia University study found that college students' initial status of self-control is partly dependent on their willingness to try new things and their maternal attachment. Students who are less interested in trying new things and have a secure attachment to their mothers tend to maintain stable control throughout the year. C...

SourceWest Virginia University·JournalJournal of Applied Developmental Psychology·DateJun 10, 2021

Research establishes safe water thresholds for antimicrobials, to help mitigate resistance

Researchers developed a new framework to establish safe thresholds for antimicrobial release into the environment, addressing the global health threat of antibiotic-resistant bacteria. The framework provides guidance on risk assessment and could inform policy to reduce antimicrobial levels in water systems, helping to mitigate resistance.

SourceUniversity of Exeter·JournalWater Research·DateJun 10, 2021

COVID-19 vaccine hesitancy among patients with breast cancer

A survey study among women with breast cancer in Mexico found a high hesitancy rate toward COVID-19 vaccination due to concerns about vaccine safety and efficacy. The study highlights the need for healthcare providers to address these concerns and improve access to vaccination services for this vulnerable population.

SourceJAMA Network·JournalJAMA Oncology·DateJun 10, 2021

More sustainable mortars and concrete with optimal thermal and mechanical efficiency

The University of the Basque Country's research team has created mortars and concretes with optimal thermal and mechanical efficiency, replacing natural materials with industrial by-products. The new materials have good thermal conductivity and are suitable for use in radiant floor heating systems, reducing CO2 emissions.

SourceUniversity of the Basque Country·JournalJournal of Building Engineering·DateJun 10, 2021

Pinpointing how cancer cells turn aggressive

A team of scientists has developed a new method for tracing the lineage and gene expression patterns of metastatic cancer cells at the single-cell level. The researchers found that a spectrum of aggression exists in cancer cells, with some cells more likely to remain in place and others more likely to spread to other tissues.

SourceUniversity of Pennsylvania·JournalCancer Cell·DateJun 10, 2021

Researchers use transoceanic fiber link for geophysical sensing

Scientists demonstrate a new technique to sense geophysical events using transoceanic fiber optic cables, offering potential for early warnings of tsunamis and earthquakes. The method measures tiny changes in polarization of transmitted light, enabling monitoring of previously inaccessible ocean depths.

SourceOptica·JournalOptica·DateJun 10, 2021

Future falls risk detected by a simple bone density scan

A study published in Atherosclerosis has found that the build-up of calcium in major blood vessels is linked to a 39% higher risk of serious falls in older women. The research used bone density scans to identify abdominal aortic calcification, which can be detected early on, and may help health professionals to prevent future falls.

SourceEdith Cowan University·JournalAtherosclerosis·DateJun 10, 2021