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A combination of agrochemicals shortens the life of bees

A nonlethal dose of insecticide clothianidin can reduce honeybees' life span by half

03-Jun-2019

A new study by Brazilian biologists suggests that the effect of pesticides on bees could be worse than previously thought. Even when used at a level considered nonlethal, an insecticide curtailed the lives of bees by up to 50%. The researchers also found that a fungicide deemed safe for bees ...

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Artificial magnetic field produces exotic behavior in graphene sheets

04-Dec-2018

A simple sheet of graphene has noteworthy properties due to a quantum phenomenon in its electron structure named Dirac cones in honor of British theoretical physicist Paul Dirac (1902-1984), who was awarded the Nobel Prize for Physics in 1933. The system becomes even more interesting if it ...

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Key enzyme for production of second-generation ethanol discovered in Brazilian Amazon

17-May-2018

Second-generation ethanol (also called cellulosic ethanol) open perspectives for optimizing alcohol production. Since 2G ethanol is obtained from from sugarcane straw and bagasse, it basically makes it possible converting waste into energy. Holder of the world's best biomass and boasting the ...

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Thermoelectric nanodevice based on Majorana fermions proposed

10-Apr-2018

In March 1938, the young Italian physicist Ettore Majorana disappeared mysteriously, leaving his country's scientific community shaken. The episode remains unexplained, despite Leonardo Scascia's attempt to unravel the enigma in his book The Disappearance of Majorana (1975). Majorana, whom Enrico ...

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Model predicts scenarios for energy generation using nuclear fusion

31-Jan-2018

Nuclear fusion, for the controlled and regular generation of electric power by converting hydrogen into helium and reproducing on a small scale what happens in our Sun (as well as other stars), is one of the foremost technological promises for the decades ahead. Designed to reach parameters ...

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Experiment confirms fundamental symmetry in nature

24-Sep-2015

Scientists working with ALICE (A Large Ion Collider Experiment), a heavy-ion detector on the Large Hadron Collider (LHC) ring, have made precise measurements of particle mass and electric charge that confirm the existence of a fundamental symmetry in nature. The investigators include Brazilian ...

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