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Scientific Inquirer (EUA)
Em 2026: 5 notícias
Desde 1995: 78 notícias
Climate change: Brazilian semi-arid biome could lose over 90% of mammal species by 2060
Publicado em 21 de janeiro de 2024
The foreseeable effects of climate change on the Caatinga, the semi-arid shrubland and thorn forest biome in Brazil’s Northeast region, will be catastrophic for most terrestrial mammal species that live there.
A study reported in the journal Global Change Biology by researchers in Brazil affiliated with the State University of Campinas (UNICAMP), the Federal University of (UFPB) and the Federal University of Minas Gerais (UFMG) forecasts species loss for 91.6% of [...]
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Novel methodology projects growth of native trees, enhancing return on investment in forest restoration
Publicado em 21 janeiro 2024Interest 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 Paris Agreement to restore 12 million hectares of native forest. However, tree planting is costly, while data on species growth and other aspects of reforestation is scant. A study published in the journal Perspectives in Ecology and [...]ver notícia -
Sanitized ready-to-eat salad may contain disease-causing bacteria
Publicado em 07 dezembro 2023A review article published in the journal Foods describes a study that provides an overview of research on minimally processed vegetables (MPVs), with a specific focus on the Brazilian market. Data is presented on hygiene indicators and pathogenic microorganisms, especially Escherichia coli (the main indicator of fecal contamination), Salmonella spp., and Listeria monocytogenes, with prevalence rates ranging from 0.7% to 100%, 0.6% to 26.7%, and 0.2% to 33.3% respectively. The article [...]ver notícia -
Understanding of mechanisms behind post-exercise lack of appetite can open new paths to obesity treatment
Publicado em 23 outubro 2023The complex relationship between physical activity and energy balance – food intake versus energy expenditure – is still a challenge for science, especially in light of the rising worldwide prevalence of overweight and obesity. Some of the medications available on the market to combat obesity work analogously to hormones associated with appetite control, and for some time researchers have focused on understanding how processes involving metabolites (products of cell metabolism) [...]ver notícia -
Three out of every ten meals ordered from the main food delivery app in Brazil come from dark kitchens
Publicado em 09 agosto 2023About a third of the restaurants listed on iFood, the food delivery app most used by Brazilians, are “dark kitchens”, according to the first study of the topic conducted in Brazil, and one of only a few worldwide. An article on the study is published in the journal Food Research International. It has eight authors; the first three and the last are researchers at the State University of Campinas (UNICAMP) in São Paulo state. Defined in the article as [...]ver notícia -
Luzio, who lived in São Paulo 10,000 years ago, was Amerindian like Indigenous people now, DNA reveals
Publicado em 03 agosto 2023An article to be published on July 31 in Nature Ecology & Evolution reveals that Luzio, the oldest human skeleton found in São Paulo state (Brazil), was a descendant of the ancestral population that settled the Americas at least 16,000 years ago and gave rise to all present-day Indigenous peoples, such as the Tupi. Based on the largest set of Brazilian archeological genomic data, the study reported in the article also offers an explanation for the disappearance of the [...]ver notícia -
Genetic sequencing of sea turtles can help understand disease that threatens species
Publicado em 10 maio 2023As if pollution, fishery bycatch (incidental capture of non-targeted species hooked or entangled in fishing gear) and poaching were not enough, sea turtles suffer from a type of cancer that limits their survival. In recent decades, some of the damage done by human activity has been mitigated by conservation actions. New perspectives in understanding the disease and possibly finding treatment are now opening up, thanks to the work done by an international consortium of scientists in achieving [...]ver notícia -
Secret Behind Amazonian ‘Dark Earth’ Could Help Speed up Forest Restoration Across the Globe
Publicado em 10 maio 2023Between approximately 450 BCE and 950 CE, millions of Amerindian people living in today’s Amazonia transformed the originally poor soil through various processes. Over many human generations, soils were enriched with charcoal from their low-intensity fires for cooking and burning refuse, animal bones, broken pottery, compost, and manure. The result is Amazonian dark earth (ADE) or terra preta, exceptionally fertile because rich in nutrients and stable organic matter derived from [...]ver notícia -
A method to access genetic information in blood samples and find correlations with mental health problems
Publicado em 07 maio 2023Using blood samples to study diseases that originate in the brain is a difficulty faced by psychiatric genetics in the search for markers of mental health disorders. Researchers at the Federal University of São Paulo (UNIFESP) in Brazil have shown that this hindrance can be surmounted by analyzing microRNAs in extracellular vesicles (EVs), which are produced by most cells in the body, including neurons and other nervous system cells. The study was supported by FAPESP and is reported [...]ver notícia -
Researchers succeeded in developing a light source that produced two entangled light beams
Publicado em 06 janeiro 2023Scientists are increasingly seeking to discover more about quantum entanglement, which occurs when two or more systems are created or interact in such a manner that the quantum states of some cannot be described independently of the quantum states of the others. The systems are correlated, even when they are separated by a large distance. Interest in studying this kind of phenomenon is due to the significant potential for applications in encryption, communications and quantum computing. The [...]ver notícia