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Tech and Science Post
Em 2026: 0 notícias
Desde 1995: 93 notícias
Study proves compatibility of two fundamental principles of quantum theory
Publicado em 20 de abril de 2023
Quantum theory, which was formulated in the first three decades of the twentieth century, describes a wide array of phenomena at the molecular, atomic and subatomic scales. Among its many technological applications, three have become ubiquitous in daily life: laser barcode scanners, light-emitting diodes (LEDs) and the global positioning system (GPS).
Nevertheless, quantum physics is still not entirely understood, and some of the phenomena concerned appear to fly in the face of common sense [...]
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Novel method of analyzing microplastic particle pollution can facilitate environmental impact assessment
Publicado em 01 março 2023In the last decade, growing numbers of researchers have studied plastic pollution, one of the world’s most pressing environmental hazards. They have made progress but still face challenges, such as the comparability of results, especially with regard to microplastic particles. There is no standard sample collection and analysis methodology, for example. Most studies present conclusions based on numbers of particles as if they were environmentally equivalent regardless of size, volume, [...]ver notícia -
Artificial Intelligence Helps Predict Performance of Sugarcane in the Field
Publicado em 20 outubro 2022A technique developed by Brazilian researchers enhances the efficiency of breeding programs, saving selection time and the cost of plant genotyping and characterization A Brazilian study published in Scientific Reports shows that artificial intelligence (AI) can be used to create efficient models for genomic selection of sugarcane and forage grass varieties and predict their performance in the field on the basis of their DNA. In terms of accuracy compared with traditional breeding [...]ver notícia -
Study makes spin liquid model more realistic
Publicado em 11 outubro 2022Spin is the intrinsic magnetic moment of a particle—an electron, for example. It is a fundamental magnitude, like mass and charge. Simply put, it is as if the particle had a magnet inside it that enabled it to interact, even while at rest, not only with the spins of other particles but also with external magnetic fields. By analogy with usual liquids, a system in which spins do not exhibit magnetic order, even at temperatures close to absolute zero, is termed a spin liquid. In [...]ver notícia -
Study quantifies impact of human activity on Atlantic Rainforest’s carbon storage capacity
Publicado em 13 setembro 2022he countless benefits of native forests include the capacity of tree biomass to store large amounts of carbon, which can counterbalance greenhouse gas emissions into the atmosphere. A paper published in the journal Science Advances reports on an innovative analysis of a large dataset designed to clarify the concept of carbon sequestration, a strategic issue in the discussion of global climate change. “We still know little about the factors that can lead forests to store more [...]ver notícia -
Brazil has two populations of American bullfrogs, an exotic species that transmits a deadly fungus
Publicado em 11 setembro 2022Researchers at the University of São Paulo (USP) and the State University of Campinas (UNICAMP) have conducted the most comprehensive genetic analysis ever of the American bullfrog (Aquarana catesbeiana) in Brazil, concluding that there are two populations of the species here, living on frog farms or invading local ecosystems. Bullfrogs are considered the world’s main invasive amphibian. An article on the study is published in Scientific Reports. “We confirmed the [...]ver notícia -
North Atlantic temperature helps forecast extreme events in Northeast Brazil up to three months in advance
Publicado em 21 julho 2022he sea surface temperature in the North Atlantic Ocean can be a predictor up to three months in advance of extreme climate events involving reduced rainfall and intense drought in the Northeast region of Brazil. This is one of the main findings of a study by researchers in Brazil, China, Australia and Germany, according to an article published in Geophysical Research Letters. Using a novel methodology based on the concept of precipitation deficit, the study showed that in recent years [...]ver notícia -
Technology optimizes renewable energy generation from malting barley bagasse by the beer industry
Publicado em 15 julho 2022A scientific article just published by four Brazilian and two American scientists reports gains in electric and thermal energy obtained when brewer’s spent grain (barley bagasse), an abundant waste produced by the beer industry, is treated with ultrasound before undergoing anaerobic digestion, a microbiological process involving consumption of organic matter and production of methane. Pre-treatment generated biogas with 56% methane, 27% more than the proportion obtained without use of [...]ver notícia -
Novel sewage treatment system removes up to 70% of nitrogen that would otherwise be discarded into nature
Publicado em 27 junho 2022A new type of biofilm reactor adapted to Brazilian conditions and using polyurethane foam to lower costs can reduce the amount of nitrogen compounds in wastewater by as much as 70%, according to an article in Environmental Technology. The researchers who conducted the study developed a mathematical model to analyze and predict the nitrogen removal mechanism. The biofilm comprised bacteria that converted nitrogen compounds into nitrogen gas, which is environmentally harmless. The study was [...]ver notícia -
Study proposes mathematical tool to help understand fractal structure of quark-gluon plasma
Publicado em 07 junho 2022Quark-gluon plasma (QGP) is a state of matter existing at extremely temperatures and densities, such as those that occur in collisions of hadrons (protons, neutrons and mesons). Under so-called “normal” conditions, quarks and gluons are always confined in the structures that constitute hadrons, but when hadrons are accelerated to relativistic velocities and made to collide with each other, as they are in the experiments performed at the Large Hadron Collider (LHC) operated by the [...]ver notícia