Felipe Floresti

Cryogenics

High cost and disruptions in helium supply make it difficult to carry out research at temperatures close to absolute zero

The liquefied from of the noble gas is used to cool magnetic resonance imaging machines, particle accelerators, and quantum computers

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OBITUARY

Flowers of physics

Thereza Borello-Lewin was renowned for her work at USP’s Pelletron particle accelerator

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AGRICULTURAL ENGINEERING

A vibrant way to control brown stink bugs

A device that simulates the vibrations emitted by the insect could be used to monitor its presence in soybean and maize crops

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VIROLOGY

Mystery solved

Virus that causes chikungunya provokes inflammation in several organs, including the brain, and can lead to death

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RETROSPECT

The past dangers of receiving blood

Until early 20th century discoveries, transfusions depended essentially on luck

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CHEMISTRY

Hydrogel pellets remove water from biodiesel

Reusable material emerges as an alternative for purifying biofuel

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NANOTECHNOLOGY

Egg white increases adhesion of graphene to cotton threads

Group from Recife uses albumen from egg whites to attach plant-fiber coverings used in electronic clothing

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VIROLOGY

Study identifies how the Chikungunya virus causes death

Infectious agent causes dysregulated metabolism and inflammation in multiple organs, including the brain

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Epidemiology

The mental burden of the young

Frequency of psychiatric disorders doubles between end of infancy and start of adolescence

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Health economics

Half of all tuberculosis patients spend more than 20% of their annual family income on treatment

Extra consultations or exams, transportation, food, and loss of income add up to US$1,573.40, on average

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Epidemiology

Around 400,000 people died due to cardiovascular problems in Brazil in 2022

Heart attacks and different types of strokes accounted for 76% of cases

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Obituary

Right to scientific knowledge

Ennio Candotti, founder of the Amazon Museum, was passionate about promoting science as head of the SBPC

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Immunology

Cutaneous leishmaniasis may be aggravated by viral and bacterial coinfections

Cutaneous leishmaniasis may be aggravated by viral and bacterial coinfections

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Genetics

Chikungunya virus caused seven outbreaks in Brazil in 10 years

The agent that causes the disease has already been identified in 60% of municipalities

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Obituary

Ice and fire

Environmental engineer Alberto Setzer led Brazil’s Antarctic meteorology project and INPE’s fire monitoring program

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CONSERVATION

The effects of subsistence hunting in sustainable-use reserves in the Amazon

Impacts on animal populations are greater within five kilometers of human communities

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COVID-19

Nonpharmaceutical interventions helped reduce the impact of COVID-19

Nonpharmaceutical interventions helped reduce the impact of COVID-19

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ECOLOGY

Humans prey on more species than 19 other large carnivores

Almost 15,000 vertebrates are impacted by human activity through hunting, fishing, or capture for breeding in captivity

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Pharmacology

Psychedelics act against depression by stimulating connections between neurons

Antidepressant effect occurs independently of the mechanism that alters perception of reality

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