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Science News Archive March 2020 - Page 10


Page 10 of 41

Recipe for neuromorphic processing systems?

Researchers developed a recipe for creating ideal hybrid memristive-CMOS neuromorphic computing systems, exploiting the advantages of low-precision, noisy, and variable neurons. This work aims to enable compact and efficient real-time processing for applications such as bio-signal processing and brain-machine interfaces.

SourceAmerican Institute of Physics·JournalApplied Physics Letters·DateMar 24, 2020

Brain or muscles, what do we lose first?

Researchers from UNIGE used a database of over 100,000 people to study the relationship between physical and cognitive abilities after 50 years of age. They found that cognitive decline precedes physical activity, suggesting prioritizing brain exercise may slow down an inevitable decline.

SourceUniversité de Genève·JournalHealth Psychology·DateMar 24, 2020

PETA Science Group contributes to first non-animal 3D lung alveolar model of its kind

The PETA International Science Consortium Ltd. has contributed to the development of EpiAlveolar, a human cell-based alveolar model that can simulate the effects of inhaling different substances on the human lung. This breakthrough technology allows for the testing of chemicals and other respirable materials without animal testing.

eDNA provides researchers with 'more than meets the eye'

Researchers used eDNA metabarcoding to detect biodiversity in two regions of Western Australia, finding that bulk arthropods and animal droppings detected the most species. The study suggests that eDNA can be a fast and accurate tool for biomonitoring, but careful surveys are needed to avoid contamination from outside organisms.

SourceCurtin University·JournalMolecular Ecology Resources·DateMar 24, 2020

A molecule that directs neurons

A genetic study by the University of Trento identified a crucial molecule (Wnt inhibitory factor 1, Wif1) in the correct composition of habenula neurons and their connectivity. This discovery may provide new insights into the causes of neurological disorders like autism.

SourceUniversità di Trento·JournalDevelopment·DateMar 24, 2020

Efficiency of non-invasive brain stimulation for memory improvement: Embracing the challenge

Researchers at Skoltech discovered that non-invasive magnetic stimulation of the brain can enhance human working memory. The effects of magnetic stimulation weaken as the brain works on a cognitive task under stimulation. Cognitive activity can even reduce the efficiency of TMS, suggesting new protocols may be needed for optimal results.

Is step count associated with lower risk of death?

Researchers analyzed data from nearly 5,000 adults and found that taking more steps was associated with a reduced risk of death. Higher step intensity also showed a significant association with lower mortality rates, suggesting that stepping is a crucial factor in overall health.

SourceJAMA Network·JournalJAMA·DateMar 24, 2020

Crumpled graphene makes ultra-sensitive cancer DNA detector

Researchers at the University of Illinois created a crumpled graphene sensor that detects ultra-low concentrations of disease markers in blood or serum, improving sensitivity ten thousand times over current designs. This breakthrough enables rapid diagnosis and could lead to portable, handheld devices for monitoring various biomarkers.

Engineers model mutations causing drug resistance

Engineers have developed a method to predict which mutations will occur in people, making it easier to create effective pharmaceuticals. The researchers used algorithms similar to those used in chemical physics to model how evolution works and found that biased random events play a big part in the evolution of resistance in leukemia.

SourcePenn State·JournalCell Reports·DateMar 24, 2020

Researchers develop language test for people with Fragile X syndrome

A new test measures expressive language skills in individuals with Fragile X syndrome, helping increase participation in clinical studies aimed at improving intellectual and cognitive functioning. The test's reliability and validity were demonstrated through consistent scores across multiple administrations.

Planning for future water security in China

A new study found that China's water use has decelerated since the 1980s due to the adoption of efficient irrigation techniques and industrial water recycling technologies. However, uncertainties remain due to land institution transitions, urbanization, and potential increased water use in intensive farming and industrial sectors.

SourceInternational Institute for Applied Systems Analysis·JournalProceedings of the National Academy of Sciences·DateMar 24, 2020

Eye blinking on-a-chip

Kyoto University scientists develop a device that mimics the movement of tears and blinking eyes, allowing for more accurate testing of ophthalmic drugs. The device shows promise in increasing filament production in corneal cells, potentially leading to improved ocular drug development.

SourceKyoto University·JournalLab on a Chip·DateMar 24, 2020

Diet quality of young people in US

The study analyzed national survey data to estimate overall diet quality among US children and teens from 1999 to 2016. Researchers found a significant improvement in dietary habits, with reduced consumption of unhealthy foods and increased intake of fruits and vegetables.

SourceJAMA Network·JournalJAMA·DateMar 24, 2020

Scientists investigate why females live longer than males

A study of 101 wild mammal species found that females lived 18% longer than males for over 60% of the species, with a similar gap in humans. The researchers suggest complex interactions between environmental conditions and sex-specific costs of reproduction may contribute to this phenomenon.

SourceUniversity of Bath·JournalProceedings of the National Academy of Sciences·DateMar 24, 2020

High-efficiency laser for silicon chips

Scientists have created a compatible semiconductor laser made of germanium and tin, with efficiency comparable to conventional GaAs semiconductor lasers on Si. The new laser can be manufactured during the CMOS production process, reducing waste heat and enabling continuous operation.

SourceForschungszentrum Juelich·JournalNature Photonics·DateMar 24, 2020

Lack of media skepticism tied to belief in rape myths

A new study co-led by a Cornell researcher found that individuals who recognize similarities between people they know and those depicted in the media are more likely to believe common rape myths. Media literacy education could help raise awareness about sexual violence and improve prevention programs on college campuses.

SourceCornell University·JournalViolence Against Women·DateMar 24, 2020

Teaching old transition metals new tricks: Chemists activate palladium catalysis by light

Researchers from the University of Münster have developed a novel approach to allyl functionalization using radical chemistry, generating π-allylpalladium complexes through visible light activation. The method has been shown to be highly selective and sustainable, with over 60 examples demonstrating its utility in various applications.

SourceUniversity of Münster·JournalNature Catalysis·DateMar 24, 2020