Eduardo Geraque

ZOOLOGY

Hibernation delays aging in marmots and encourages sexual maturation in ground squirrels

Studies on the effects of hibernation were carried out by Brazilian researchers in the USA

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Primatology

The name of the monkey

DNA analysis confirms the species of pygmy marmoset given to naturalist Spix by indigenous people in the Amazon two centuries ago

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Geology

The São Francisco sands

The Xique-Xique dunes in Bahia were formed by sand carried from the São Francisco River by the wind over the last 100,00 years

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COVID-19

Cross-infection between species

Humans have transmitted SARS-CoV-2 to animals, at least two of which have passed the virus onto other people

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Physics

From metal to an insulator

Twisting a two-dimensional nanofilm allows an electric current to progressively pass through it

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Biology

Rainforest marsupials

Study suggests opossums emerged in the Amazon about 40 million years ago

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COVID-19

First DNA-based vaccine

India has developed and approved the first COVID-19 vaccine based on DNA technology

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Covid-19

Delta advances

Delta variant threatening control of the COVID-19 pandemic

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Oceanography

The Saga of the Paratethys

The world's largest lake formed 12 million years ago and then disappeared, giving rise to the Caspian and Black Seas

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COVID-19

Mixed protection

Preliminary studies suggest that combining two different vaccines could be useful in the fight against the pandemic

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Medicine

Breathing microplastics

Tiny and potentially harmful polymer particles and fibers found in human lungs

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COVID-19

Limited use

ANVISA authorizes the use of three COVID-19 drugs, but they are expensive and designed only for specific situations

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Biology

The colors and songs of evolution

Varying plumage hues and song patterns lead to the formation of new species in certain bird groups

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Photonics

New light conversion

Miniaturization on a microchip that transforms a type of electromagnetic radiation into two distinct frequencies could reduce the size of laser devices

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Ecology

Lowered immunity

Even modest doses of insecticide make bees more susceptible to bacterial infections and increased mortality

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Ornithology

Where birds came from

Most species in the tropics emerged in extreme environments, such as deserts and mountains, before establishing themselves in other biomes

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Botany

Tropical trees die sooner

Tropical species have average lifespans of 186 years, while temperate species live for an average 322 years, a study on 438 tree species shows

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COVID-19

The era of genetic vaccines

The vaccines from BioNTech/Pfizer and Moderna result from historical investments in messenger RNA technology leading to the creation of new products

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BIOTA - 20 YEARS

A poisonous weave

A spider web commonly found in the Americas is composed of toxins that paralyze and help kill prey

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COVID-19

Stuttering progress

Advanced testing of COVID-19 vaccines continues at an accelerated pace, despite occasional interruptions caused by safety concerns

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Neurosciences

A smell, a response

Mouse brain activates a distinct set of neurons in response to different animal odors

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Nutrition

Digit data

Isotopes in the fingernails reveal information about a person’s diet and can be used to infer their socioeconomic status

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UFRJ – 100 YEARS

Strengths in life sciences

From basic to applied research, UFRJ has produced cutting-edge science across different fields

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Paleontology

The oldest scorpion in South America

260-million-year-old arthropod fossil found in sedimentary rocks at the side of the road in the state of Santa Catarina

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Atmospheric sciences 

Pizza soot

Pizzerias in São Paulo produce the equivalent of 9% of the fine particulate matter emitted by vehicles in the city’s Metropolitan Region

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Ecology

Winged invasion

In four decades, 35 alien bird species have colonized deforested areas on experimental properties in Brazil’s Amazon

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Microbiology

Fighting infections with graphene

Nanomaterial enables low doses of light to eliminate bacteria

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Zoology

Rescuing the watercolors

New book gathers more than 500 "lost" drawings of Brazilian fish produced during a 19th century expedition

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Ecology

Pollinating ants

The ant species Camponotus crassus is the primary fertilizer of the evergreen plant species Paepalanthus lundii, endemic to the Cerrado of Minas Gerais

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Paleoclimate

Storms in the Ice Age

In the last glacial period, torrential rainfall in what is now Brazil was mostly concentrated in the Northeast and the Amazon

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