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DALLAS, May 10, 2021 Hospitalized COVID-19 patients with impaired first-phase ejection fraction were nearly 5 times more likely to die compared to patients with healthier measures of this early, often undetected sign of heart failure, according to new research published today in
Hypertension, an American Heart Association journal. First-phase ejection fraction is a measure of the left ventricular ejection fraction until the time of maximal ventricular contraction.
Cardiovascular risk factors and/or disease have been recognized as COVID-19 risk factors that have a high negative impact on patient outcomes, since early in the SARS-CoV-2 pandemic. Researchers hypothesized that predisposition to heart failure would be associated with more severe cases of COVID-19 in hospitalized patients.
Columbia University Irving Medical Center
Silver nanoclusters-which could be applied to the treatment of cancer in the future-block an early step of DNA replication, a new study by researchers in the Institute for Cancer Genetics at Columbia University Vagelos College of Physicians and Surgeons and the Herbert Irving Comprehensive Cancer Center has found.
Silver nanoclusters, which contain just a few to tens of atoms, are a more recent addition to the collection of silver nanomaterials, including larger-sized silver nanoparticles.
“In the long term, we may be able to harness the toxicity of silver nanoclusters.”
Because of silver nanoclusters’ unique chemical characteristics, they are used in a wide array of applications, including antimicrobial agents and electronics, and are being investigated for use in cancer imaging and drug delivery.
La Chine se préparait à une 3eme guerre mondiale avec des armes biologiques depuis 6 ans y compris avec des coronavirus francesoir.fr - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from francesoir.fr Daily Mail and Mail on Sunday newspapers.
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IMAGE: The upper left figure shows the spectra brightness versus wavelength for two supernovae. One is nearby and one is very distant. To measure dark energy, scientists need to. view more
Credit: Graphic credit: Zosia Rostomian/Berkeley Lab; photo credit: NASA/ESA)
Cosmologists have found a way to double the accuracy of measuring distances to supernova explosions - one of their tried-and-true tools for studying the mysterious dark energy that is making the universe expand faster and faster. The results from the Nearby Supernova Factory (SNfactory) collaboration, led by Greg Aldering of the Department of Energy s Lawrence Berkeley National Laboratory (Berkeley Lab), will enable scientists to study dark energy with greatly improved precision and accuracy, and provide a powerful crosscheck of the technique across vast distances and time. The findings will also be central to major upcoming cosmology experiments that will use new ground and space telescopes to te
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IMAGE: Illustration of a tree representing the legume family tree with branches representing the six subfamilies. On each branch are flowers or pods of species belonging to the subfamilies. The lines. view more
Credit: Yiyong Zhao, Chien-Hsun Huang, and Hong Ma
The most comprehensive study of the family tree for legumes, the plant family that includes beans, soybeans, peanuts, and many other economically important crop plants, reveals a history of whole-genome duplications. The study also helps to uncover the evolution of genes involved in nitrogen fixation a key trait likely important in the evolutionary spread and diversification of legumes and vital for their use as green manure in agriculture. To reconstruct the family tree, researchers compared the DNA sequence of more than 1500 genes from 463 different legume species, including 391 newly sequenced species, that span the diversity of this large plant family.