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Researchers at the University of São Paulo (USP) and the Federal University of Viçosa (UFV) in Brazil have developed a sustainable sensor that can be placed directly on the surface of a vegetable or fruit to detect the presence of pesticides. Known for this reason as "plant-wearable", it is made of cellulose acetate, a material derived from wood pulp. The device has the potential to help assure food safety in a world that increasingly suffers from a shortage of food [...]

A single-dose dengue vaccine produced by Butantan Institute in São Paulo state (Brazil) prevents development of the disease in 79.6% of those vaccinated, according to an article published today (February 1) in The New England Journal of Medicine. Called Butantan-DV, the vaccine contains attenuated versions of all four dengue virus serotypes. The results of the ongoing Phase 3 trial show that it is safe and effective for all age groups between 2 and 59, and for people with or [...]

A study led by scientists at the University of São Paulo (USP) in Brazil has shown that the Rio Grande Rise (RGR), a possibly continental basaltic plateau and chain of seamounts now submerged in the South Atlantic Ocean some 1,200 km from the coast of Brazil, was once a giant tropical island, rich in minerals and covered with vegetation. Geologists have dated sediments from the formation to between 45 million and 40 million years ago. An article describing the results of the study, [...]

Crop-livestock integration (CLI) systems combine the growing of crops in rotation or consortium, especially grain crops such as soybeans, corn and sorghum, and forage plants used to feed cattle and pigs, with the raising of livestock, typically beef cattle. The crops provide most of the cash income, while the livestock has food available during the dry season and facilitates seed management. CLI improves soil fertility, raises yields and helps rehabilitate degraded areas while reducing the use [...]

Excessive stress during adolescence can cause alterations in the profile of genes expressed in the brain, especially those associated with bioenergy functions. These alterations may affect cell respiration, resulting in behavioral problems and psychiatric disorders in adulthood, according to a study in rats conducted by researchers at the University of São Paulo's Ribeirão Preto Medical School (FMRP-USP) in Brazil. The results are reported in an article published in [...]

Although the interior of São Paulo state (Brazil) has higher human development indices (HDIs) and fewer Black people as a percentage of the population, they account for a larger proportion of deaths from cancer in the Barretos region than in São Paulo city, the state capital, according to a study supported by FAPESP. An article on the study is published in the journal Cancer Causes & Control. In the 18 cities of the Barretos regional health district (RHD), the [...]

Experiments with rats conducted by researchers at São Paulo State University (UNESP) in Brazil help understand why descendants of women who were malnourished during pregnancy tend to face a higher risk of prostate cancer in adulthood. In a first study, conducted with support from FAPESP, the researchers detected alterations in gene expression that may have been associated with the hormone imbalance observed in the rats' offspring and the heightened risk of prostate [...]

Sao Paulo, Jan 25 (IANS) Children born to women who were malnourished during pregnancy tend to face a higher risk of prostate cancer in adulthood, according to two studies in mice. In the first study, researchers at Sao Paulo State University (UNESP) in Brazil detected alterations in gene expression that may have been associated with the hormone imbalance observed in the rats’ offspring and the heightened risk of prostate cancer. “Lack of protein during gestation and lactation [...]

Concrete is an essential material in the construction industry, where it is fundamental to the foundations and structures of dwellings and office buildings, as well as roads, dams and bridges, among many other infrastructure projects. However, the service life of concrete is limited, and it must be monitored in order to guarantee the safety of these structures. To facilitate fast, low-cost, in-situ analysis that dispenses with the need to take samples to a laboratory, researchers at the [...]