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Science News Archive 2020 - Page 190


Page 190 of 512

Flexible targets help immune system make finely-tuned antibodies

Researchers discovered that when the foreign antigen is more flexible, the germinal centre can employ a greater number of evolution strategies to make antibodies that bind foreign but not self-molecules. The study provides new insights for vaccine design and may help address the major roadblock in generating effective HIV vaccines.

SourceGarvan Institute of Medical Research·JournalProceedings of the National Academy of Sciences·DateAug 24, 2020

Ancient star explosions revealed in the deep sea

Researchers found clear traces of iron-60 in deep-sea sediments dating back 33,000 years, suggesting the Earth has been traveling through a cloud of faintly radioactive dust. The discovery suggests that the solar system may have recently passed through a denser cloud of gas and dust, known as the local interstellar cloud.

SourceAustralian National University·JournalProceedings of the National Academy of Sciences·DateAug 24, 2020

Fat crystals trigger chronic inflammation

Researchers at the University of Bonn identify a disease mechanism where fat crystals cause immune system hyperreaction, leading to chronic inflammation. The study reveals that deoxysphingolipid crystals disrupt mitochondrial function and activate an inflammatory response in immune cells.

SourceUniversity of Bonn·JournalAutophagy·DateAug 24, 2020

How dinosaur research can help medicine

A team of researchers led by Dr. Tanja Wintrich discovered that even Tyrannosaurus rex could have suffered a slipped disc, as ancient reptiles had intervertebral discs similar to those in humans. This finding provides new insights into human spine mobility and medicine.

SourceUniversity of Bonn·JournalScientific Reports·DateAug 24, 2020

Optical illusions explained in a fly's eyes

Scientists at Yale University found that flies perceive motion in static images similarly to humans, using a shared strategy for motion detection. By analyzing specific neuron types and behavior, the researchers developed a theory explaining how optical illusions work, which may also apply to human visual systems.

SourceYale University·JournalProceedings of the National Academy of Sciences·DateAug 24, 2020

Faulty brain circuits arise from abnormal fusion

Researchers at the University of Queensland discovered that neurons can fuse together, disrupting electrical circuits and leading to behavioral impairments in nematode worms. The study provides a novel cause for malfunction of brain's electrical circuits and a possible underlying cause of neurological diseases.

SourceUniversity of Queensland·JournalProceedings of the National Academy of Sciences·DateAug 24, 2020

Landmark HKU-led volume on past progress and new frontiers in the study of early birds and their close relatives

The publication provides a comprehensive overview of pennaraptoran theropods, covering their fossil record, systematics, anatomy, and early flight studies. Key findings include the identification of key avian traits that originated deep within theropod evolution and the discovery of unique reproductive strategies.

SourceThe University of Hong Kong·JournalBulletin of the American Museum of Natural History·DateAug 24, 2020

The mathematical magic of bending grids

A team of mathematicians from TU Wien has developed a technique to calculate flat grids that can be unfolded into desired three-dimensional shapes. The method uses findings in differential geometry and has been successfully tested in practice, resulting in stable and structurally sound 3D structures with good static properties.

SourceVienna University of Technology·JournalACM Transactions on Graphics·DateAug 24, 2020

Hydrogen vehicles might soon become the global norm

Researchers at the University of Copenhagen have developed a new catalyst that can produce cheaper and more sustainable hydrogen-powered vehicles, reducing reliance on precious materials like platinum. The breakthrough could make hydrogen vehicles more durable and scalable, leading to a potential shift towards sustainable transportation.

SourceUniversity of Copenhagen·JournalNature Materials·DateAug 24, 2020

'Biggest holes in the system'

A new study by Washington State University scientist Raven Weaver found that older adults living in very rural settings are less likely to receive available services compared to those in mostly rural areas. The study highlights the most vulnerable groups within the rural classification, emphasizing the need for proactive support.

SourceWashington State University·JournalThe International Journal of Aging and Human Development·DateAug 24, 2020

Protein 'chameleon' colors long-term memory

Researchers at Rice University and UTHealth have discovered how a chameleon-like protein, CPEB3, interacts with actin filaments in neurons. This interaction enables the protein to adapt its binding sites to either SUMO or actin, allowing it to form long-lived aggregates that store memories.

SourceRice University·JournalProceedings of the National Academy of Sciences·DateAug 24, 2020

Reducing transmission risk of livestock disease

A new study found that transmission risk of the PPRV virus increases with specific husbandry practices, including introducing sheep or goats to herds and attending seasonal grazing camps. In contrast, herd size was not related to transmission risk, but rather social cliques formed within individual compounds.

SourcePenn State·JournalViruses·DateAug 24, 2020

Small quake clusters can't hide from AI

Researchers used data gathered before a 2017 deadly landslide in Greenland to demonstrate the effectiveness of deep learning in predicting seismic events. The study found weak but repetitive rumblings that accelerated over time, leading to the landslide, which could be detected by AI.

SourceRice University·JournalNature Communications·DateAug 24, 2020

Each human gut has a viral 'fingerprint'

A comprehensive database of 33,242 unique viral populations in the human digestive system has been assembled by Ohio State University scientists. This discovery reveals a complex relationship between viruses and bacteria in the gut, with higher diversity associated with healthier individuals.

SourceOhio State University·JournalCell Host & Microbe·DateAug 24, 2020

Routing valley exciton emission of a WS2 monolayer via in-plane inversion-symmetry broken PhC slabs

Scientists demonstrate efficient separation of valley exciton emission of a WS2 monolayer using two-dimensional all-dielectric PhC slabs without in-plane inversion symmetry. The delocalized Bloch modes play a critical role in separating and enhancing directional valley exciton emission.