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2020

Новости за 25.08.2020

How effective does a COVID-19 vaccine need to be to stop the pandemic?

Eurekalert.org 

The American Journal of Preventive Medicine, published by Elsevier, is committed to publishing the most robust, evidence-based research and commentary on COVID-19 as they unfold to keep readers up to date and aware of issues relevant to community and individual health during this continually evolving global outbreak. All articles featured here are freely available.

COVID-19 human milk studies should continue without stopping breastfeeding

Eurekalert.org 

It is not easy to conduct human milk research during a pandemic. Yet despite the consistent lack of quality evidence for transmission of viral RNA from breast milk, some leaders are pushing ahead by altering public health and clinical practice guidance, according to E.A. Quinn, associate professor of biological anthropology in Arts & Sciences at Washington University in St. Louis.

Global magnetic field of the solar corona measured for the first time

Eurekalert.org 

An international team led by Professor Tian Hui from Peking University has recently measured the global magnetic field of the solar corona for the first time. The team used observations from the Coronal Multi-channel Polarimeter, an instrument designed by Dr. Steve Tomczyk at the National Center for Atmospheric Research, USA.

Enzyme prisons

Eurekalert.org 

A team at the MDC has answered a question that has puzzled scientists for some 40 years. In the journal Cell, the group explains how cells are able to switch on completely different signaling pathways using only one signaling molecule: the nucleotide cAMP. To achieve this, the molecule is virtually imprisoned in nanometer-sized spaces.



Quantum simulation for 3D chiral topological phase

Eurekalert.org 

Professor Liu at PKU, Professor Du and Professor Wang at USTC build up a quantum simulator using nitrogen-vacancy center to investigate a three-dimensional (3D) chiral topological insulator which was not realized in solid state system, and demonstrate a complete study of both the bulk and surface topological physics by quantum quenches.

Hydroxychloroquine reduces in-hospital COVID-19 mortality

Eurekalert.org 

An Italian observational study contributes to the ongoing debate regarding the use of hydroxychloroquine in the current pandemic. The research, conducted on 3,451 patients treated in 33 hospitals throughout the Italian territory, shows that the use of this drug reduces by 30% the risk of death in hospitalized patients affected by Covid-19.

A case for botanical gardens to lead in global plant crisis

Eurekalert.org 

In a paper published in Plants, People, Planet, The Morton Arboretum scientists Murphy Westwood, Ph.D., and Nicole Cavender, Ph.D., in collaboration with Abby Meyer, and Paul Smith, Ph.D., from Botanic Gardens Conservation International (BGCI), detail how botanical gardens have the skills and knowledge, facilities, plant collections, and access to the public required to advance plant conservation, but lack the funding and public recognition necessary to achieve significant impact on global conservation.

Trust the power of markets

Eurekalert.org 

Organizations using groups or committees to make decisions might do better to crowdsource their decisions, says UC Riverside-led research. The study found that people trust groups even though their susceptibility to manipulation can cause poor decisions. Information markets, in which people bet on potential outcomes, make more accurate decisions, but people trust them less. Once people get used to using markets they trust them more, making markets a useful decision-making tool for large organizations.

UC Berkeley demographers put COVID-19 death toll into perspective

Eurekalert.org 

With over 170,000 COVID-19 deaths to date, and 1,000 more each day, America's life expectancy may appear to be plummeting. But in estimating the magnitude of the pandemic, UC Berkeley demographers have found that COVID-19 is likely to shorten the average US lifespan in 2020 by only about a year.

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Memory protein

Eurekalert.org 

When UC Santa Barbara materials scientist Omar Saleh and graduate student Ian Morgan sought to understand the mechanical behaviors of disordered proteins in the lab, they expected that after being stretched, one particular model protein would snap back instantaneously, like a rubber band.

Virtual imaging trials optimize CT, radiography for coronavirus disease (COVID-19)

Eurekalert.org 

According to ARRS' American Journal of Roentgenology (AJR), virtual imaging trials using computational patient models and a human phantom with coronavirus disease (COVID-19) abnormalities via multidiagnostic confirmation of SARS-CoV-2 infection yield simulations of 'realistic' texture and shape--suggesting that such trials could be utilized to compare CT and radiography, improve both screening and follow-up protocols, and train artificial intelligence tools.

Pain 'catastrophizing' may lead to little exercise, more time sedentary

Eurekalert.org 

Chronic pain affects the majority of older adults in the US, and getting enough exercise plays a key role in pain management. New research suggests that how people think about their pain can have a significant effect on whether they get enough physical activity - or if they spend more time sedentary.


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