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Tube-dwelling anemones have largest mitochondrial genome on record — ScienceDaily
Publicado em 25 abril 2019
The tube-dwelling anemone is an ancient sea creature that resembles a prehistoric flower. The animals live slow, long and predictable lifestyles and look fairly similar from species to species.
It’d be easy to use the word “simple” when considering this relative of coral and jellyfish. But wait — not so fast.
New research on tube anemones is challenging everything that evolutionary biologists thought they knew about sea animal genetics. The mitochondrial DNA of the [...]
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Astronomers find evidence of a planet with a mass almost 13 times that of Jupiter
Publicado em 08 abril 2019In the past three decades, almost 4,000 planet-like objects have been discovered orbiting isolated stars outside the Solar System (exoplanets). Beginning in 2011, it was possible to use NASA’s Kepler Space Telescope to observe the first exoplanets in orbit around young binary systems of two live stars with hydrogen still burning in their core. Brazilian astronomers have now found the first evidence of the existence of an exoplanet orbiting an older or more evolved binary in which one of the [...]ver notícia -
Bacteria may help frogs attract mates
Publicado emBrazilian scientists have found that the sturdy odor launched by some amphibian species is produced by micro organism and that attracting a mate is certainly one of its functions. The micro organism in query are a noteworthy instance of symbiosis as they help within the animal's mating course of. A paper recounting the invention of this function of microorganisms remoted from the pores and skin of frogs has been printed within the journal Proceedings of the National Academy of Sciences [...]ver notícia -
Amoebae diversified at least 750 million years ago, far earlier than expected
Publicado emBrazilian researchers have reconstructed the evolutionary history of amoebae and demonstrated that at the end of the Precambrian period, at least 750 million years ago, life on Earth was much more diverse than suggested by classic theory. The study, which was supported by São Paulo Research Foundation — FAPESP, revealed eight new ancestral lineages of Thecamoebae, the largest group in Amoebozoa. Thecamoebians are known as testates because of their hard outer carapace or [...]ver notícia -
Hybrid material may outperform graphene in several applications — ScienceDaily
Publicado em 28 fevereiro 2019Materials that are hybrid constructions (combining organic and inorganic precursors) and quasi-two-dimensional (with malleable and highly compactable molecular structures) are on the rise in several technological applications, such as the fabrication of ever-smaller optoelectronic devices. An article published in the journalPhysical Review Bdescribes a study in this field resulting from the doctoral research of Diana Meneses Gustin and Luís Cabral, both supervised by Victor Lopez Richard, a [...]ver notícia -
Lithium-air batteries can store energy for cars, houses and industry — ScienceDaily
Publicado em 18 fevereiro 2019Current lithium ion battery technology will probably not be able to handle the coming decades’ huge demand for energy. It is estimated that by 2050, electricity will make up 50% of the world’s energy mix. Today that rate is 18%. But installed capacity for renewable energy production is expected to increase fourfold. This will require batteries that are more efficient, cheaper and environmentally friendly. One of the alternatives being studied today in many parts of the world is the [...]ver notícia