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Science News Archive 2021 - Page 155


Page 155 of 510

Low-sodium salt prevents stroke

The Salt Substitute and Stroke Study found that replacing regular salt with low-sodium alternatives lowers the risk of stroke, cardiovascular events, and mortality. The study also showed no increased risk of serious adverse events related to hyperkalaemia, providing clear evidence for an effective and affordable intervention.

SourceEuropean Society of Cardiology·JournalNew England Journal of Medicine·DateAug 30, 2021

Struggling to learn a new language? Blame it on your stable brain

A study published in Proceedings of the National Academy of Sciences has shed light on why it's difficult to learn a second language as an adult. Researchers found that clusters of neurons in the speech cortex fine-tune themselves as listeners gain familiarity with foreign sounds, indicating a crucial step in language learning.

SourceUniversity of California - San Francisco·JournalProceedings of the National Academy of Sciences·DateAug 30, 2021

Can devices that never wear out come into reality?

Scientists at Tsinghua University have successfully created micro-scale devices that can slide for up to 100 km without wear or friction. The devices use structural superlubricity, which enables near-zero friction and zero wear during sliding, making them suitable for a wide range of applications.

SourceScience China Press·JournalNational Science Review·DateAug 30, 2021

Lattice softness: Key to the identification of metals with high

Researchers have discovered that lattice softness is the dominant factor affecting a metal's ability to hydrogenate, enabling the expedited development of hydrogen storage materials. This parameter can also be used to evaluate the hydrogenation ability of intermetallic compounds.

SourceNational Institute for Materials Science, Japan·JournalJournal of the American Chemical Society·TypeComputational simulation/modeling·DateAug 30, 2021

‘Smart’ shirt keeps tabs on the heart

A Rice University lab developed a 'smart' shirt that gathers accurate EKGs and heart rates using conductive nanotube thread. The fibers, just as conductive as metal wires but washable and comfortable, provided better data than standard chest-strap monitors.

SourceRice University·JournalNano Letters·TypeExperimental study·DateAug 30, 2021

Hidden in the seeds: Bacteria found to survive the harsh interior of passion fruit seeds

Scientists at Tokyo University of Science discovered endophytic bacteria that can survive extreme conditions within passion fruit seeds. The bacteria were isolated from seedlings grown from cut seeds and found to possess biocatalytic activities related to the metabolism of secondary metabolites, such as resveratrol and piceatannol.

SourceTokyo University of Science·JournalMicrobiologyOpen·TypeExperimental study·DateAug 30, 2021

Learning from a ‘living fossil’

A Spartan-led team has assembled the most complete picture of the bowfin genome to date, revealing striking similarities between bowfin gas bladder development and human lung development. This breakthrough provides a better model for studying human health and disease, with potential implications for understanding evolutionary history.

SourceMichigan State University·JournalNature Genetics·DateAug 30, 2021

Biofuel potential from wastewater ponds

Researchers at Flinders University have created a cost-effective way to harvest microalgal biomass from wastewater ponds, producing a sustainable source of biofuels. The high-rate algal pond model uses algae and bacteria to treat wastewater, reducing treatment time to 5-10 days and minimizing costs.

SourceFlinders University·JournalAlgal Research·TypeObservational study·DateAug 30, 2021

Convection-permitting Model Reveals New Features of Atmospheric Water Cycle over Asian Water Tower

A new study using convection-permitting models reveals improved simulations of precipitation and atmospheric circulation over the Tibetan Plateau. The models reduce the wet bias in simulated precipitation by 47% and improve the simulation of large-scale circulation, leading to better moisture transport into and out of the plateau.

SourceInstitute of Atmospheric Physics, Chinese Academy of Sciences·JournalJournal of Geophysical Research Atmospheres·DateAug 30, 2021

Robot-assisted therapy can help treat stroke survivors, study finds

Researchers at UTHealth found that exoskeleton-assisted rehabilitation can be beneficial for stroke survivors, correcting impaired walking patterns and increasing motor coordination. The study used the Ekso 1.1 exoskeleton to guide patients with chronic post-stroke hemiplegia or hemiparesis in a 10-15 session training program over thre...

SourceUniversity of Texas Health Science Center at Houston·JournalJournal of Neural Engineering·DateAug 30, 2021

Has Hong Kong lost its luster? HKU Ecologists reconstructed Hong Kong's marine ecosystem over the last 100 years Worried that climate and metal pollution may have a negative impact on the biodiversity

Climate change and metal pollution have substantially altered Hong Kong's marine communities, particularly in eastern waters, according to a recent study published in Anthropocene. The researchers used small fossil shells to reconstruct the ecosystem over the last 50-100 years, revealing significant impacts on rare species.

SourceThe University of Hong Kong·JournalAnthropocene·DateAug 30, 2021

Companion dogs may be a key to solving dementia

Research found a strong correlation between Aβ42 peptide levels in companion dog brains and cognitive decline, supporting the use of dogs as models for Alzheimer's disease. The study's results demonstrate the potential of canine cognitive dysfunction as a tool for understanding human aging and age-related diseases.

SourceEötvös Loránd University·JournalGeroScience·TypeExperimental study·DateAug 30, 2021

Artificial Intelligence approach helps to identify patients with heart failure that respond to beta-blocker treatment

A new AI approach has been developed to identify patients with heart failure who will benefit from beta-blocker treatment. The study found that the AI method could accurately predict response to beta-blockers in both normal heart rhythm and atrial fibrillation patients, leading to improved treatment outcomes.

SourceUniversity of Birmingham·JournalThe Lancet·TypeMeta-analysis·DateAug 30, 2021

Proning manoeuvre dramatically improves COVID-19 patients’ blood oxygen levels

A new protocol for prone positioning has been developed to improve oxygen levels in COVID-19 patients at high risk of dying. The technique, which involves turning patients on their front, shows dramatic improvements in oxygenation and is cost-effective, with studies suggesting longer periods may be more beneficial.

SourceUniversity of Bristol·JournalThe Journal of Frailty & Aging·TypeLiterature review·DateAug 30, 2021

Researchers explore how people respond to wildfire smoke

Researchers studied Northern California residents' responses to wildfire smoke, finding that social norms and social support significantly influence protective health actions. The study aims to promote safer behavior by understanding how people interact with information and make decisions during smoke events.

SourceStanford University·JournalClimate Risk Management·TypeCase study·DateAug 30, 2021

Researchers take step toward using cellular motion to help wound healing

Scientists at Princeton University have created a novel approach to directing skin cells using an electrical field. By breaking molecular connections between cells and applying an electric field, researchers were able to improve the controllability of tissues and potentially optimize wound healing through electrical stimulation.

SourcePrinceton University, Engineering School·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateAug 30, 2021

New tool can predict risk of death, hospitalization for patients awaiting cardiac surgery; New series on artificial intelligence in medicine

Researchers developed a model to predict the risk of death and unplanned cardiac hospitalization among patients awaiting cardiac surgery. The tool, based on an ethnically diverse group of 62,375 patients, identifies factors such as gender, urban residency, and cardiac symptoms that increase the risk of adverse events.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateAug 30, 2021

Study shows how a racing heart may alter decision-making brain circuits

A recent study by Mount Sinai researchers discovered that certain neurons in the brain's decision-making centers monitor body-state dynamics and hijack the decision-making process during intense states of arousal. This suggests that changes in heart rate and other bodily responses can impact the brain's ability to make rational decisions.

SourceThe Mount Sinai Hospital / Mount Sinai School of Medicine·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateAug 30, 2021

UMass Amherst research finds ‘very low rates’ of dental fluoride varnish treatment for young children

A recent study by University of Massachusetts Amherst found that fewer than 5% of well-child visits for privately insured young children included a recommended dental fluoride varnish application. This is concerning given the importance of this service in reducing tooth decay among children, which affects nearly 25% of 2- to 5-year-old...

SourceUniversity of Massachusetts Amherst·JournalJAMA·TypeObservational study·DateAug 30, 2021

COVID-19 vaccine elicits antibodies in 90% taking immunosuppressants

Researchers at Washington University School of Medicine found that COVID-19 vaccination elicited a response in nearly nine out of ten people with weakened immune systems. However, the responses were only about one-third as strong as those mounted by healthy people. Despite this, the discovery is encouraging news for a population at hig...

SourceWashU Medicine·JournalAnnals of Internal Medicine·TypeRandomized controlled/clinical trial·DateAug 30, 2021

Tropical coral species at extreme risk from climate change, new study finds

A new study found that tropical coral species in Western Australia's Kimberley region and offshore reefs are at risk of disappearing or moving south due to climate change. The research predicts a significant decline in coral biodiversity across the entire WA coastline, with many species likely to be driven to local extinction.

SourceCurtin University·JournalDiversity and Distributions·TypeImaging analysis·DateAug 30, 2021

New archaeological discoveries highlight lack of protections for submerged Indigenous sites

A new study highlights the need for a national policy to protect submerged Indigenous sites, which are at risk due to climate change, dredging, and seabed mining. Archaeological discoveries off the Pilbara coastline in Western Australia have uncovered ancient stone tools, rock art, and engravings dating back over 7,000 years.

SourceFlinders University·JournalAustralian Archaeology·TypeSurvey·DateAug 30, 2021

CHOP researchers find bystander CPR with rescue breathing leads to better outcomes in pediatric cardiac arrest

A new study by Children's Hospital of Philadelphia finds that bystander CPR using only chest compression has similar outcomes to not using CPR at all for infants experiencing cardiac arrest. In contrast, children who received CPR with rescue breathing had nearly 1.5 times better neurological outcomes.

SourceChildren's Hospital of Philadelphia·JournalJournal of the American College of Cardiology·DateAug 30, 2021

Dragged along by micro-swimmers

Researchers have developed a new model for micro-swimmer-based transport, which shows that a swarm of micro-swimmers can transport particles more efficiently than traditional methods. The study's findings suggest that this phenomenon could be useful in biological applications, such as delivering drugs to specific locations in the body.

SourceMax-Planck-Gesellschaft·JournalPhysical Review Letters·TypeExperimental study·DateAug 30, 2021

Novel assessment of platelet-rich plasma treatment shows efficacy in patients with osteoarthritis

A pilot study found that a single injection of leukocyte-rich platelet-rich plasma (PRP) significantly improved functional mobility, pain, and quality of life in patients with knee osteoarthritis. The study supports the use of this combined approach to evaluate emerging biological therapies for musculoskeletal disorders.

SourceBaylor College of Medicine·JournalRegenerative Medicine·TypeRandomized controlled/clinical trial·DateAug 30, 2021