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Science News Archive 2020 - Page 365


Page 365 of 512

Quantum electrodynamics experiment

Researchers at Heidelberg University have successfully constructed the symmetries of quantum electrodynamics using ultracold atoms. The findings could lead to the development of large-scale quantum devices capable of simulating complex physical phenomena.

SourceHeidelberg University·JournalScience·DateApr 24, 2020

Environment-friendly compound shows promise for solar cell use

Researchers at Rensselaer Polytechnic Institute have developed a new lead-free chalcogenide perovskite that could provide a safer and more effective option for solar cells. The compound, barium zirconium sulfide (BaZrS3), is highly resistant to moisture and sunlight, making it an attractive alternative to traditional materials.

SourceRensselaer Polytechnic Institute·JournalAdvanced Functional Materials·DateApr 24, 2020

Summary of preliminary data about obesity and severity of COVID-19

Researchers from DZD and Boston Children's Hospital highlight the importance of body weight and metabolic health in understanding COVID-19 severity. Studies suggest that obesity may increase the risk of severe illness, independent of cardiometabolic diseases.

SourceDeutsches Zentrum fuer Diabetesforschung DZD·JournalNature Reviews Endocrinology·DateApr 24, 2020

Training instance segmentation neural network with synthetic datasets for seed phenotyping

A team of scientists has developed a system utilizing image analysis and artificial intelligence to analyze the shape of large numbers of seeds from a single image. The trained model detected and segmented individual seeds with high accuracy and analyzed seeds of other crops, accelerating crop breeding and analysis.

SourceInstitute of Transformative Bio-Molecules (ITbM), Nagoya University·JournalCommunications Biology·DateApr 24, 2020

COVID-19: The downside of social distancing

A team of researchers argues that social distancing is at odds with human nature, which naturally seeks social contact in times of danger. This contradiction poses a significant challenge to public health and policy-making.

SourceLudwig-Maximilians-Universität München·JournalCurrent Biology·DateApr 24, 2020

Colliding solitons in optical microresonators

Researchers at EPFL's lab have developed a method to generate soliton collisions in optical microresonators, allowing for the study of complex soliton interactions. By controlling the speed mismatch between two laser-driven solitons, they can induce binding or crossing behaviors, revealing important physics of the system.

SourceEcole Polytechnique Fédérale de Lausanne·JournalPhysical Review X·DateApr 24, 2020

How the immune system reacts to hepatitis C viruses

Researchers discovered that hepatitis C virus interacts with the immune system through the interferon-stimulated gene C19orf66, disrupting viral replication machinery and inhibiting its ability to replicate. The study found increased production of C19orf66 in hepatitis C patients, suggesting a potential antiviral effect.

SourceRuhr-University Bochum·JournalJournal of Hepatology·DateApr 24, 2020

Nursing homes prepared for pandemics, but COVID-19 reveals gaps

A survey of Michigan nursing homes reveals significant improvements in pandemic preparedness since the last study in 2007. Nearly all nursing homes now have a plan in place, staff trained on response protocols and communication lines established with hospitals and public health departments.

SourceMichigan Medicine - University of Michigan·JournalJournal of the American Geriatrics Society·DateApr 24, 2020

Brain insulin sensitivity determines body weight and fat distribution

A long-term study found that brain insulin sensitivity determines both body weight and the distribution of fat in the body. Participants with high insulin sensitivity in the brain experienced a significant reduction in visceral fat and weight, which was maintained over nine years.

SourceDeutsches Zentrum fuer Diabetesforschung DZD·JournalNature Communications·DateApr 24, 2020

Learn from past to protect oceans

Historical examples of sustainable and unsustainable fishing practices reveal common 'recipes for failure' that offer warnings for modern-day ocean management. Successful societies achieved balance between economic growth, social equity, and sustainability by managing resources fairly and responding to change.

SourceUniversity of Exeter·JournalFish and Fisheries·DateApr 24, 2020

Achievement requires passion and grit

A recent study reveals that passion is significantly more important for men's success than in women, who exhibit stronger correlations between factors. Women's achievement is tied to the intertwined factors of passion, grit and positive mindset.

SourceNorwegian University of Science and Technology·JournalNew Ideas in Psychology·DateApr 24, 2020

COVID-19 news from Annals of Internal Medicine

Researchers from Cincinnati Children's Hospital Medical Center describe ventilator triage policies developed during the COVID-19 pandemic. The American College of Physicians Ethics Committee also warns against using universal do-not-resuscitate orders and life-years approaches to ration resources, citing ethical concerns.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateApr 24, 2020

Syphilis eludes immune attack by altering a single gene

Researchers found that syphilis bacteria alter a single gene, called tprK, which provides instructions for a protein on its surface. This change allows the bacterium to evade the immune system and resist eradication, contributing to its ability to hide in the body for decades.

SourceUniversity of Washington School of Medicine/UW Medicine·JournalPLOS Neglected Tropical Diseases·DateApr 24, 2020

Feeling the pressure: How blood vessels sense their environment

A novel protein, thrombospondin-1 (Thbs1), plays a crucial role in mechanotransduction in blood vessel walls, enabling cells to adapt to changing mechanical forces. The absence of Thbs1 can lead to weakened blood vessel walls, increasing the risk of cardiovascular disease.

SourceUniversity of Tsukuba·JournalProceedings of the National Academy of Sciences·DateApr 24, 2020

Organic heterostructures composed of one- and two-dimensional polymorph

Researchers have fabricated organic heterostructures with enormous structural diversity and novel optical/electronical properties using polymorphism. These structures exhibit multiple output channels, structure-dependent optical signals, and good optical waveguide performance.

SourceScience China Press·JournalScience China Chemistry·DateApr 24, 2020

Substituting the next-best protein

Researchers found that FDA-approved drugs Betaxolol and Pravastatin can increase muscle strength in mouse models of DMD by stimulating utrophin production. This approach could lead to novel therapies for Duchenne muscular dystrophy, potentially offering advantages over traditional gene replacement methods.

SourceUniversity of Ottawa·JournalNature Communications·DateApr 24, 2020

The most promising strategies for defeating coronavirus: A review study

This study reviews possible clinical strategies for defeating coronavirus, including the use of vaccines, broad-spectrum antivirals like remdesivir, and gene therapy. The authors propose these approaches as promising alternatives to develop effective treatments against SARS-CoV-2 and related coronaviruses.

SourceFrontiers·JournalFrontiers in Microbiology·DateApr 24, 2020

New high-energy-density physics research provides insights about the universe

Researchers have discovered two new phenomena - interspecies radiative transition and breakdown of dipole selection rule - in the transport of radiation in atoms and molecules under high-energy-density physics conditions. This finding enhances understanding of HEDP and could lead to insights into how stars evolve in the universe.

SourceUniversity of Rochester·JournalNature Communications·DateApr 24, 2020

A 'corset' for the enzyme structure

Enzyme structure varies depending on whether it's measured in a test tube or a living cell, according to researchers at the University of Bonn. This fundamental principle has implications for drug research and studies involving biomolecules.

SourceUniversity of Bonn·JournalAngewandte Chemie International Edition·DateApr 24, 2020

Traffic officer protein governs speed of sugar/fat conversion pathway

A protein sensor called MICU1 restricts sugar and fat conversion in cells during starvation, but could be fine-tuned to promote more conversion in people with metabolic conditions. This discovery offers a potential solution for cardiovascular- and metabolic syndrome-related diseases.

SourceUniversity of Texas Health Science Center at San Antonio·JournalScience Signaling·DateApr 24, 2020

Holistic approach best for tackling nonmedical drug use, study finds

A new study suggests that interventions targeting biological, social, environmental and mental health obstacles are most effective in helping individuals overcome non-medical drug use. For alcohol addiction, simple interventions focusing on alcohol use yield the best results.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalPsychology of Addictive Behaviors·DateApr 24, 2020

Warming climate undoes decades of knowledge of marine protected areas

A new study finds that climate-driven transformations render marine reserves ineffective in protecting biodiversity and fish biomass. Marine reserves still protect some species, but conservation efforts require re-evaluation. Urgent action is needed to reduce greenhouse gas emissions and mitigate other pressures.

SourceLancaster University·JournalNature Communications·DateApr 24, 2020

An eclipsing binary millisecond pulsar discovered by FAST

Researchers have discovered the first pulsar in Globular Cluster M92 using FAST telescope. The pulsar, PSR J1717+4307A, is an eclipsing binary millisecond pulsar in a circular orbit with a companion star. This discovery provides insights into pulsars and their role in probing dense stellar cores.

SourceChinese Academy of Sciences Headquarters·JournalThe Astrophysical Journal Letters·DateApr 24, 2020

Scientists discover just how runny a liquid can be

Researchers discovered the minimal value of viscosity, governed by the Planck constant and proton-to-electron mass ratio, using an equation that relates it to these physical constants. This finding has practical implications for developing new fluids with low viscosity.

SourceQueen Mary University of London·JournalScience Advances·DateApr 24, 2020

FSU researchers discover new structure for promising class of materials

Researchers at Florida State University have created a hollow nanostructure for metal halide perovskites, which shows potential for more efficient photon-related technologies. The new structure exhibits pronounced quantum size effects and is the first to display negative curvature.

SourceFlorida State University·JournalScience Advances·DateApr 24, 2020

New research highlights blood clot dangers of COVID-19

Recent reports show a strong association between elevated D-dimer levels and poor prognosis in patients with COVID-19. Microvascular thrombotic processes may play a role in respiratory failure, suggesting a new severe infectious lung disease with no proven therapies.

SourceRadiological Society of North America·JournalRadiology·DateApr 23, 2020

Not so sweet

Researchers found that cool temperatures reduce the appeal of sweetness by activating other sensory cells via protein rhodopsin 6, which is typically associated with light detection. This suppresses communication between sweet-sensing taste neurons and the brain, leading to reduced feeding behavior in fruit flies.

SourceUniversity of California - Santa Barbara·JournalCurrent Biology·DateApr 23, 2020

Fishers livelihood measured by more than catch

A study by Michigan State University examines the complex relationships between small-scale fishing activities, including pre- and post-harvest interactions, to understand the impact on fishers' livelihoods. The research highlights the importance of trust and collaborative relationships in shaping these dynamics.

SourceMichigan State University·JournalPLOS ONE·DateApr 23, 2020

Digital solutions for dementia care

Researchers found that telehealth services using videoconferences can save travel time, equip families with strategies to promote independence, and reduce costs for non-pharmacologic interventions. The study provides evidence-based information and skills to support people with dementia and their care partners.

SourceFlinders University·JournalAmerican Journal of Geriatric Psychiatry·DateApr 23, 2020

New study takes the pulse of a sleeping supervolcano

Researchers from Uppsala University discovered that hot magma from inside the Earth is forcing its way into a giant reservoir, keeping the Andean supervolcano alive. The study provides new insights into how large volcanoes work and could help increase chances of survival in case of a future eruption.

SourceUppsala University·JournalScientific Reports·DateApr 23, 2020

High-altitude adaptations connected with lower risk for chronic diseases

Research team finds that high-altitude adaptations in the Himalayas may lower risk for hypertension and diabetes-associated anemia. The study, led by Katherine Wander of Binghamton University, found that a Tibetan-descended population living in Southwest China had lower rates of these conditions compared to low-altitude Han populations.

SourceBinghamton University·JournalAmerican Journal of Physical Anthropology·DateApr 23, 2020

Hummingbirds show up when tropical trees fall down

A tropical treefall created a 2.5-acre gap that attracted hundreds of hummingbird species, doubling the diversity and presence of these birds in the area. The researchers documented 16 unique individuals of one species, the snowy-bellied hummingbird, within just one year after the treefall.

SourceUniversity of Illinois College of Agricultural, Consumer and Environmental Sciences·JournalJournal of Field Ornithology·DateApr 23, 2020

Stirling receives £1.2 million to study global sustainability

The University of Stirling has received £1.2 million to study global sustainability, with a focus on resolving conflicts between the United Nations Sustainable Development Goals. The project will use hydropower as a model system to identify and mitigate issues caused by competing objectives.

SourceUniversity of Stirling·DateApr 23, 2020

Everything is not fine: Kids can tell when parents suppress their stress

Research finds that children physically respond when parents hide their emotions, making them less warm and engaged with each other. The study suggests that parents should give themselves permission to feel emotional to better problem-solve and honor their child's feelings.

SourceWashington State University·JournalJournal of Family Psychology·DateApr 23, 2020

Insects: Largest study to date finds declines on land, but recoveries in freshwater

The largest study to date has found that global insect populations are declining on land by an average of 0.92% per year, resulting in a 24% decrease over 30 years. However, freshwater insects have shown an average annual increase of 1.08%, corresponding to a 38% increase over 30 years.

SourceGerman Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig·JournalScience·DateApr 23, 2020

An obesity protein discovery may lead to better treatments

A USC-led team of scientists has discovered the precise shape of the melanocortin 4 receptor, a key player in human metabolism. The findings could lead to more effective therapies for obesity and other metabolic diseases, which affect millions worldwide.

SourceUniversity of Southern California·JournalScience·DateApr 23, 2020