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Science News Archive May 2022 - Page 20


Page 20 of 40

Magnetic nanoparticles in biological vehicles individually characterized for the first time

A multidisciplinary research group uses magnetotactic bacteria to create nanomagnetic structures, which can be steered through the human body via external magnetic fields. They have developed a new method to measure the magnetic properties of individual nanomagnets in biological entities, enabling precise control over these structures.

SourceHelmholtz-Zentrum Berlin für Materialien und Energie·JournalACS Nano·TypeExperimental study·DateMay 17, 2022

CABBI team develops automated platform for plasmid production

Researchers at University of Illinois at Urbana-Champaign have developed PlasmidMaker, an automated platform for designing and constructing plasmids. The platform uses Pyrococcus furiosus Argonaute-based artificial restriction enzymes to assemble DNA fragments with greater flexibility and precision.

New light on organic solar cells

Researchers at Linköping University have identified the key to minimizing energy losses in organic solar cells. By studying the energy level alignment at donor/acceptor interfaces, they discovered a systematic mapping that points to new ways forward for developing more efficient and sustainable solar cell materials.

SourceLinköping University·JournalNature Communications·DateMay 17, 2022

First animals developed complex ecosystems before the Cambrian explosion

The study reveals that early animal communities exhibited complex ecological structures more than 550 million years ago, setting the stage for the Cambrian explosion. The analysis of metacommunity structure suggests competitive exclusion as the cause of the diversity drop in the late Ediacaran period.

SourcePLOS·JournalPLOS Biology·TypeObservational study·DateMay 17, 2022

Scent dogs detect coronavirus reliably from skin swabs

A recent study by the University of Helsinki found that scent detection dogs can accurately identify individuals with a coronavirus infection from skin swabs. The dogs' sensitivity and specificity were 92%, with only small differences in accuracy observed between individual dogs.

SourceUniversity of Helsinki·JournalBMJ Global Health·TypeRandomized controlled/clinical trial·DateMay 17, 2022

Statins may provide protection against depression

A new study found that statin users were less likely to recognize fearful faces and more likely to report them as positive, indicating reduced negative emotional bias. Statins may provide protection against depression through their effect on emotion processing, possibly due to anti-inflammatory mechanisms.

SourceElsevier·JournalBiological Psychiatry·TypeExperimental study·DateMay 17, 2022

Development of an innovative hydrogen liquefaction technology

Researchers have developed a magnetic refrigeration system capable of operating at extremely low temperatures to liquefy hydrogen, achieving higher efficiency than current vapor-compression refrigerators. The technology has the potential to dramatically reduce hydrogen supply costs, making it feasible for widespread adoption.

SourceNational Institute for Materials Science, Japan·JournalApplied Physics Express·TypeExperimental study·DateMay 17, 2022

Energy-efficient AI hardware technology via a brain-inspired stashing system​

Scientists at KAIST have proposed a novel 'stashing system' inspired by the human brain's neural activity, which efficiently handles mathematical operations for artificial intelligence. This technology reduces power consumption by 37% while maintaining accuracy, paving the way for next-generation semiconductor chips.

SourceThe Korea Advanced Institute of Science and Technology (KAIST)·JournalAdvanced Functional Materials·TypeMeta-analysis·DateMay 17, 2022

Tooth unlocks mystery of Denisovans in Asia

The discovery of a 164,000- to 131,000-year-old Denisovan tooth in Laos provides significant insights into the species' geographic range. The ancient tooth's shape and similarity to teeth found on the Tibetan Plateau suggest that Denisovans inhabited Southeast Asia, particularly northern Laos.

SourceFlinders University·JournalNature Communications·TypeCase study·DateMay 17, 2022

Predictable home environment protects against development of heart disease risk factors after child abuse

A new study published in the Journal of American Heart Association found that well-organized households can help mitigate cardiovascular risk factors in children who have experienced abuse. The study's results suggest that stable home environments may play a crucial role in reducing racial disparities in cardiac disease.

SourceAnn & Robert H. Lurie Children's Hospital of Chicago·JournalJournal of the American Heart Association·DateMay 17, 2022

Teaching physics to AI makes the student a master

Researchers at Duke University have developed a machine learning algorithm that incorporates known physics into neural networks, allowing for new insights into material properties and more efficient predictions. The approach helps the algorithm attain transparency and accuracy, even with limited training data.

SourceDuke University·JournalAdvanced Optical Materials·TypeExperimental study·DateMay 17, 2022

Deep ocean warming as climate changes

New research suggests that 62% of warming in the subtropical North Atlantic is stored in the deep ocean below 700m. The study estimates a further 0.2°C warming in the next 50 years due to climate change.

SourceUniversity of Exeter·JournalCommunications Earth & Environment·TypeObservational study·DateMay 17, 2022

Nearly 700,000 US hospitalizations and 110,000 deaths prevented from the Pfizer-BioNTech COVID-19 vaccine, national study finds

A national study found that the Pfizer-BioNTech COVID-19 vaccine prevented 8.7 million symptomatic cases, 690,000 hospitalizations, and 110,000 deaths in the US. The vaccine also saved more than $30 billion in healthcare costs and over $40 billion in lost productivity.

SourceTaylor & Francis Group·JournalJournal of Medical Economics·TypeObservational study·DateMay 16, 2022

Georgia State researchers find CRISPR-Cas9 gene editing approach can alter the social behavior of animals

A team of Georgia State researchers used CRISPR-Cas9 technology to eliminate the Avpr1a receptor in hamsters, leading to unexpected changes in their social behavior. The study found that knocking out the receptor increased social communication behaviors and eliminated sex differences in aggression.

SourceGeorgia State University·JournalProceedings of the National Academy of Sciences·TypeObservational study·DateMay 16, 2022

New mechanism for regulating supply of DNA building blocks may lead to better antibiotics

Researchers at Stockholm University have identified a novel mechanism for regulating the supply of DNA building blocks, providing a potential new target for designing better antibiotics. By targeting the pathogen's ability to reproduce, scientists may be able to control the growth of bacteria such as Mycobacterium tuberculosis.

SourceStockholm University·JournalNature Communications·TypeExperimental study·DateMay 16, 2022

When more complex is simpler: ‘Coarse-graining’ can help scientists understand complex microbial ecosystems

A new modeling framework suggests that some microbial ecosystems are more easily understood through coarse-graining, which involves omitting details. This approach could help biologists study microbes in their natural environments, rather than isolating them in a petri dish.

SourceWashington University in St. Louis·JournalPhysical Review X·TypeComputational simulation/modeling·DateMay 16, 2022

HKU biologists reveal a novel macrophages-mediated mechanism that promotes peritoneal metastasis of ovarian cancer, providing important insights into its therapeutic strategy

Researchers at HKU have discovered a novel cellular and molecular interaction between cancer cells and tumour-associated macrophages that promote peritoneal metastasis of ovarian cancer. The study reveals that Wnt/b-catenin signalling upregulates the expression of metadherin, which communicates with macrophages through CEACAM1.

SourceThe University of Hong Kong·JournalAdvanced Science·DateMay 16, 2022

Helping EVs keep their cool during the battery weight balancing act

Researchers at Drexel University have developed a design optimization system to incorporate blood vessel-like cooling networks into battery packaging for electric vehicles. The system balances performance-enhancing factors against problematic variables like weight and thermal activity to provide the best battery package specifications.

SourceDrexel University·JournalComposites·TypeComputational simulation/modeling·DateMay 16, 2022

Top five reasons why midwives stay in the job

A University of Gothenburg study found that midwives' job satisfaction is linked to possibilities for development, role conflict resolution, and burnout avoidance. The research highlights the importance of quality work, recognition, and autonomy in midwives' occupational roles.

SourceUniversity of Gothenburg·JournalBMC Health Services Research·TypeSurvey·DateMay 16, 2022