Veículo

• Home
• Veículos
• Somag News

Coronavirus: Populations that are not being vaccinated and social groups that refuse to receive the coronavirus vaccine favor the emergence of variants. This is one of the main conclusions of an article by Brazilian physicists published in the scientific journal Plos One. They created a model capable of predicting coronavirus mutations based on the genetic evolution of the virus during the pandemic. The study, carried out at the Gleb Wataghin Institute of Physics, of the State University of [...]

Coronavirus: Crossing genomic sequencing data with epidemiological analyzes carried out in the city of São José do Rio Preto (SP), a group of researchers managed to demonstrate that the P.1 variant, known today as gamma, is linked to an increase in more severe cases and incidence. of deaths by covid-19 in that city. Hosted in the form of pre-publication (pre-print), that is, not yet reviewed by other scientists, on the medRxiv server at the end of last month, the study showed [...]

Covid-19: Researchers at the Federal University of São Carlos (UFSCar) have created a new test that detects antibodies against the new coronavirus. To do this, they combined an enzyme found in fireflies with a protein capable of binding to the virus that causes covid-19. Using bioluminescence, the positive test “glows”. What is bioluminescence? The phenomenon that receives the name of bioluminescence is the transformation of chemical energy into light. It takes place [...]

Covid-19: The virus responsible for covid-19 (SARS-CoV-2) infects and replicates in salivary gland cells. The discovery was made by researchers from the Faculty of Medicine of USP (FMUSP), with support from the Foundation for Research Support of the State of São Paulo (Fapesp), and recently published in the Journal of Pathology. The study helps to explain to the world why the new coronavirus is found in large quantities in human saliva. Salivary glands in the sights of scientists The [...]

Patients with mild symptoms of covid-19 may be able to transmit the new coronavirus for longer than previously believed. The hypothesis was raised in a study by the Institute of Tropical Medicine of the University of São Paulo (IMT-USP), recently published in medRxiv. The research conducted by IMT-USP professor Maria Cassia Mendes-Correa, under review by the scientific community, was based on the cases of two patients in whom Sars-CoV-2 was active in the organism for more than 30 days, [...]

The advances in molecular biology after the discovery of the structure of DNA were formidable and underlie much of what we know about living things, their cells and their systems. DNA sequencing was described in the late 1970s and, since then, methods for determining the order of the four bases (the letters A, C, T, and G) have evolved surprisingly. In my postdoctoral years, in the early 90s, sequencing was an almost artisanal reaction. It was a great joy to end the week with about 500 bases [...]

The first vertebrates to fly were pterosaurs, dominating the skies 150 million years ago. Although they reigned absolute above ground, their origin still remained hazy – now, it is known that these colossal wings are the evolution of a small terrestrial biped, the lagerpetid. The fossil record of pterosaurs is full of gaps not yet filled – Caelestiventus hanseni, their oldest known ancestor, dates back 220 million years and already exhibited all the requirements for [...]

Why do the rays split and flash? It seems like a question asked by a child, but this is the subject of a study by a team from the National Institute for Space Research (Inpe), with the collaboration of researchers from the USA, England and South Africa, now published in the journal Scientific Reports. To understand how lightning is formed, Inpe’s Atmospheric Electricity Group (Elat) recorded images of slow-motion rays (a process called super slow motion), capturing the exact moment when [...]

A new plastic film developed by a Brazilian company can inactivate the Coronavirus (SARS-CoV-2) on contact. Created by Nanox, financially supported by the FAPESP Innovative Research in Small Business Program and marketed by Alpfilm, the material has common plastic characteristics, but its composition has silver and silica microparticles, capable of minimizing the risk of contamination by plastic packaging. Contamination by the new Coronavirus through contact with surfaces is one of the main [...]