Veículo
Newswise (EUA)
Em 2024: 8 notícias
Desde 1995: 89 notícias
Nanoscale engineering brings light-twisting materials to more extreme settings
Publicado em 30 maio 2024
Imaging the hot turbulence of aircraft propulsion systems may now be possible with sturdy sheets of composite materials that twist light beams, according to research led by the University of Michigan and Air Force Research Laboratory.
The sheets were produced with a new manufacturing method that opens possibilities beyond aircraft design, as it enables new classes of materials to be used in polarization optics. While the team demonstrated high temperature tolerance, new mechanical, [...]
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Targeting multiple COVID variants through the twist in the spike protein
Publicado emParticles that gum up the keys that the virus uses to enter cells could one day be an effective COVID treatment whenever vaccines and other treatments fall shortver notícia -
Amazon rainforest at the threshold: loss of forest worsens climate change
Publicado em 15 fevereiro 2024Newswise — The Amazon rainforest could approach a tipping point, which could lead to a large-scale collapse with serious implications for the global climate system. A new Nature study by an international research team including scientists from the Potsdam Institute for Climate Impact research (PIK) reveals that up to 47 percent of the Amazonian forest is threatened and identifies climatic and land-use thresholds that should not be breached to keep the Amazon resilient. “The [...]ver notícia -
Is the Amazon forest approaching a tipping point?
Publicado em 15 fevereiro 2024Global warming may be interacting with regional rainfall and deforestation to accelerate forest loss in the Amazon, pushing it towards partial or total collapse. Research published on 14 February 2024 in Nature , has identified the potential thresholds of these stressors, showing where their combined effects could produce a ‘tipping point' – in which the forest is so fragile that just a small disturbance could cause an abrupt shift in the state of the ecosystem. The study [...]ver notícia -
Novel methodology projects growth of native trees, enhancing return on investment in forest restoration
Publicado em 19 janeiro 2024The study analyzed data for 13 Atlantic Rainforest restoration areas involving ten species of native trees that could be commercially useful to the timber industry. Publication of the findings comes during the UN Decade on Ecosystem Restoration Newswise — Interest in forest restoration has increased in recent years, both on the part of companies and financial markets and in academia and government. This is particularly the case in Brazil, whose government has pledged since the 2015 [...]ver notícia -
Cases of chikungunya and zika fall in Brazil, but most risk clusters exhibit an upward trend
Publicado em 18 janeiro 2024Researchers observed spatial and temporal patterns of occurrence and co-occurrence for the two arboviral diseases in all Brazilian municipalities, alongside the influence of environmental and socio-economic factors Newswise — Analysis of occurrence and co-occurrence patterns shows the highest-risk clusters of chikungunya and zika in Brazil spreading from the Northeast to the Center-West and coastal areas of São Paulo state and Rio de Janeiro state in the Southeast between 2018 [...]ver notícia -
Unlocking the secrets of disease-causing fungus Aspergillus fumigatus
Publicado em 04 janeiro 2024Newswise — An international team of researchers, led by Professor Gustavo Goldman of the University of São Paulo and Maynooth University’s Dr Özgür Bayram, has unveiled ground-breaking findings on Aspergillus fumigatus, which can cause deadly disease in humans. The saprophytic fungus is notorious for causing a spectrum of human diseases, known collectively as aspergillosis, in individuals undergoing cancer treatments and organ transplants as [...]ver notícia -
Diversity of bioluminescent beetles in Brazilian savanna has declined sharply in 30 years
Publicado em 03 janeiro 2024Surveys conducted in the Cerrado since the 1990s show falling biodiversity as the agricultural frontier advances in the vicinity of Emas National Park. Species with biotechnological potential are dwindling and even disappearing Newswise — At night in the Cerrado, Brazil’s savanna and second-largest biome, larvae of the click beetle Pyrearinus termitilluminans, which live in termite mounds, display green lanterns to capture prey attracted by the bright light. In more than 30 [...]ver notícia -
Electronic Pathways May Enhance Collective Atomic Vibrations’ Magnetism
Publicado em 15 dezembro 2023HOUSTON, TX — Materials with enhanced thermal conductivity are critical for the development of advanced devices to support applications in communications, clean energy, and aerospace. But in order to engineer materials with this property, scientists need to understand how phonons, or quantum units of the vibration of atoms, behave in a particular substance. “Phonons are quite important for studying new materials because they govern several material properties such as thermal [...]ver notícia -
Rabies virus variants from marmosets are found in bats
Publicado em 16 novembro 2023Newswise — Rabies virus variants closely related to variants present in White-tufted marmosets ( Callithrix jacchus ) have been detected in bats in Ceará state, Northeast Brazil. Rabies is a deadly disease for humans. Its emergence in distinct wildlife species is a potential source of human infection and hence a public health concern. Marmosets are common in forests and conservation units throughout Brazil. In or near urban areas, they are often captured as pets and [...]ver notícia