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Em 2026: 104 notícias
Desde 1995: 365 notícias
A new map shows all above-ground biomass in the Brazilian Amazon
Publicado em 21 de dezembro de 2023
Publication of a new map showing all the above-ground biomass in the Brazilian Amazon is good news in the context of the severe crisis afflicting the world's largest contiguous tropical rainforest. Using airborne laser scanning and satellite imagery calibrated by field forest inventories and integrated by heavy-duty computer processing and machine learning, the map reflects the world's largest survey of tropical forest biomass ever conducted.
Results of the study are reported in an [...]
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Nanoparticles with antibacterial action could shorten duration of tuberculosis treatment
Publicado em 19 dezembro 2023A low-cost technology involving nanoparticles loaded with antibiotics and other antimicrobial compounds that can be used in multiple attacks on infections by the bacterium responsible for most cases of tuberculosis has been developed by researchers at São Paulo State University (UNESP) in Brazil. The work is reported in an article published in the journal Carbohydrate Polymers. Results of in vitro tests suggest it could be the basis for a treatment strategy to combat [...]ver notícia -
Gut-skin connection is key factor in atopic dermatitis, research review shows
Publicado em 18 dezembro 2023Atopic dermatitis (AD) is a chronic inflammatory skin disease whose main symptoms are redness, swelling, and itchy rashes. It is more common in people with a genetic predisposition. The manifestation of symptoms depends on interactions among the immune system, environmental factors, and gut microbiota. Many pieces of this complex jigsaw puzzle are still undiscovered, but recent research has identified relevant factors. For example, alterations in gut microbiota composition can contribute to [...]ver notícia -
Biopesticide is harmless to mammals but can wipe out colonies of wasps that benefit plants
Publicado em 08 dezembro 2023Some wasps and bees are able to recognize sick nestmates by smell and can prevent their entry into the nest to avert infection of the entire colony, assuring its survival and that of the species in the long run. A study described in an article published in the journal Environmental Science and Pollution Research shows that this recognition does not happen in paper wasps of the species Mischocyttarus metathoracicus infected by a biopesticide based on the fungus Beauveria [...]ver notícia -
Copaiba oil nanoemulsion found to have antiviral potential against zika
Publicado em 08 dezembro 2023In an article published in the journal PLOS ONE, researchers at São Paulo State University (UNESP) in Brazil describe a potential strategy for combating zika virus (ZIKV). Among the results reported in the article are those of in vitro tests confirming the antiviral effects of a nanoemulsion made from oil of copaiba (Copaifera officinalis), a plant used to treat skin ailments by Indigenous people in the Amazon. About eight years ago, ZIKV was found capable of causing [...]ver notícia -
Emerging threat: Rabies virus from marmosets found in Brazilian bats
Publicado em 16 novembro 2023A recent study has revealed a startling link between rabies virus variants found in bats and those present in white-tufted marmosets in Northeast Brazil. This finding is significant due to the potential risk of rabies transmission to humans, and is particularly concerning since a man died in May after a marmoset bite. Emergence in wildlife Rabies, a deadly disease for humans, is increasingly being detected in various wildlife species, including marmosets found in Brazilian [...]ver notícia -
Amazon Forest's Carbon Emissions Soared Under Bolsonaro's Leadership, Study Finds
Publicado em 24 agosto 2023According to a recent study, the Amazon forest’s carbon emissions took a dramatic leap under former Brazilian President Jair Bolsonaro ‘s administration, Reuters reported. The study was conducted by the Brazilian National Institute for Space Research (INPE). It revealed that carbon emissions in the Amazon surged in 2019 and 2020 compared to the prior decade due to lax enforcement of environmental protective measures. In 2019, the forest’s carbon emissions were recorded [...]ver notícia -
Peça achada no DOI-Codi pode ser de período mais recente
Publicado em 18 agosto 2023A cerâmica achada pelos pesquisadores que fizeram escavaçõespor 13 dias no prédio onde ficava o Destacamento de Operações de Informação - Centro de Operações de Defesa Interna (DOI-CODI) pode ser de um período mais recente do que inicialmente se pensava. A peça foi encontrada no subsolo da edificação, em meio a terra de tonalidade escura e com alta concentração de carvão, o que [...]ver notícia -
Researchers use artificial intelligence to help diagnose autism, study says
Publicado em 17 agosto 2023Researchers are proposing using artificial intelligence technology to help diagnose autism spectrum disorder. In a recent article published in Scientific Reports, researchers from Brazil, France and Germany reportedly used magnetic resonance imaging to train a machine learning algorithm. The work – in which the "quantitative diagnostic method" is proposed – was based on brain imaging data for 500 people, with more than 240 that had been diagnosed with [...]ver notícia -
Could Specialized Probiotics Someday Treat Multiple Sclerosis?
Publicado em 10 agosto 2023A bio-engineered probiotic could “revolutionize the way we treat chronic diseases,” according to a new study. In the research, which was published in Nature on Wednesday, the authors tested an engineered probiotic bacteria in mice on a disease that closely resembles multiple sclerosis (MS) in humans. The researchers found they were able to more precisely target brain inflammation caused by MS, and also saw fewer negative side effects compared to standard therapies used for the [...]ver notícia