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Zephyrnet.com (EUA)
Em 2023: 1 notícias
Desde 1995: 18 notícias
Researchers create a low-cost sensor that detects heavy metals in sweat
Publicado em 23 janeiro 2023
Jan 23, 2023 (Nanowerk News) Heavy metals such as lead and cadmium are present in batteries, cosmetics, food and other things that are part of everyday life. They are toxic when they accumulate in the human organism, potentially causing several health problems, but detecting them in body fluids requires expensive equipment and a controlled laboratory environment. Researchers at the University of São Paulo (USP) in Brazil have now developed a portable sensor made of simple materials to [...]
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Poaching affects behavior of endangered capuchin monkeys in Brazilian biological reserve
Publicado em 21 junho 2021A study conducted in the Una Biological Reserve in the state of Bahia, Brazil, shows that in a habitat with high hunting pressure the risk of predation has such a significant impact on the behavior of the Yellow-breasted capuchin monkey Sapajus xanthosternos that it even avoids areas offering an abundant supply of plant biomass and invertebrates, its main sources of food. An article reporting the findings of the study is published in the American Journal of [...]ver notícia -
Most cities in São Paulo state have low potential capacity to adapt to climate change
Publicado em 08 junho 2021Cities located in metropolitan areas of this Brazilian state score better according to an index that measures the existence of public policies designed to adjust critical sectors to the impacts of climate change Most cities in São Paulo state (Brazil) have low potential capacity to adapt to climate change in terms of the ability to formulate public policy that facilitates the revamping of their housing and transportation systems, for example, to account for the impact of climate [...]ver notícia -
Study shows how low-protein intake during pregnancy can cause renal problems in offspring
Publicado em 05 maio 2021In an article published in PLOS ONE, scientists at a FAPESP-supported research center describe the impact of hypoproteinemia on the expression of microRNAs associated with kidney development in rat embryos. Besides being underweight, babies born to women whose diet lacked sufficient protein during pregnancy tend to have kidney problems resulting from alterations that occurred while their organs were forming during the embryonic stage of their development. In a study published in PLOS ONE, [...]ver notícia -
Forest fires drive expansion of savannas in heart of Amazon
Publicado em 04 maio 2021Agência FAPESP – White-sand savannas are expanding in the heart of the Amazon as a result of recurring forest fires, according to a study in the journal Ecosystems. The study was supported by FAPESP, and conducted by Bernardo Monteiro Flores, currently a postdoctoral fellow in ecology at the Federal University of Santa Catarina (UFSC) in Brazil, and Milena Holmgren, a professor in the Department of Environmental Sciences at Wageningen University in the [...]ver notícia -
El mapeo de las mariposas en el Bosque Atlántico determina las áreas prioritarias de conservación
Publicado em 01 maio 2021Al mapear la distribución de las especies de mariposas en el bioma del Bosque Atlántico, que se extiende a lo largo de la costa brasileña, científicos constataron que las regiones del mismo que poseen la mayor diversidad son Serra do Mar, Serra da Mantiqueira, Mata de Araucárias y algunas áreas específicas situadas en los estados de Espírito Santo, Minas Gerais, Bahía y Pernambuco. Por ende, de acuerdo con este estudio, esos [...]ver notícia -
Se revela el arsenal utilizado por
Publicado em 25 março 2021Investigadores brasileños han logrado develar cuáles son “las armas” que emplea el protozoo Leishmania en las células humanas para agravar la leishmaniasis, fundamentalmente la variante mucocutánea, que puede provocar deformaciones en los pacientes. Este descubrimiento apunta caminos en la búsqueda de nuevos abordajes terapéuticos contra la enfermedad, y también echa luz sobre un sistema que puede tener impacto en el combate [...]ver notícia -
Arsenal used by parasite to affect cellular defense and enhance leishmaniasis is revealed
Publicado em 23 março 2021Researchers have succeeded in revealing the arsenal used by protozoans of the genus Leishmania in human cells to make leishmaniasis more severe, especially in cases of the mucocutaneous variety of the disease, which can cause deformations in patients. The discovery points the way to a search for novel treatments for the disease as well as casting light on a key mechanism involved in other diseases. The mechanism involves Leishmania, macrophages and a virus that lives [...]ver notícia -
Study could help develop biosensors for non-invasive diagnosis of diseases
Publicado em 22 março 2021The efficacy of biosensors used in clinical tests depends critically on the surface of the device on which the biorecognition molecules are immobilized. This surface can be adjusted and sometimes controlled using self-assembled molecular monolayers as matrices. The monolayers are films made up of organic molecules that under the right conditions assemble spontaneously on metal surfaces via chemical bonds between the sulfur atoms and the metal. A study conducted at the University of São [...]ver notícia -
Estudo encontra mecanismo inflamatório responsável pela erosão óssea na artrite reumatóide
Publicado em 18 março 2021Em um estudo sobre os efeitos do tabagismo na exacerbação da doença, cientistas de um centro de pesquisas apoiado pela FAPESP identificaram uma nova via no processo inflamatório relacionado a danos ósseos Em um estudo que visa investigar o mecanismo responsável pela exacerbação da artrite reumatóide em fumantes, pesquisadores do Centro de Pesquisa em Doenças Inflamatórias (CRID), ligada à Universidade de [...]ver notícia