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Science Newsline (Japão)
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Desde 1995: 63 notícias
Revealed Mechanism Behind Citrus Canker Bacteria's Defense System for Predators
Publicado em 24 maio 2018
Released by Fundação de Amparo à Pesquisa do Estado de São Paulo
Xanthomonas citri, the bacterium that causes citrus canker, a disease responsible for major damage to lemon and orange groves in worldwide scale, has a veritable arsenal of weapons to overcome constant competition with other bacterial species and ward off natural predators such as amoebae.
Despite the fact that citrus canker have already caused significant economic losses, X. citri's ability to persist in the environment [...]
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New Network Is Installed to Investigate Space Weather over South America
Publicado em 22 maio 2018Released by Fundação de Amparo à Pesquisa do Estado de São Paulo A group of Brazilian researchers affiliated with the National Space Research Institute (INPE) is working to install a network comprised of magnetometers (instruments used to measure the intensity of a magnetic field) across South America. Known for its acronym Embrace MagNet (Embrace Magnetometer Network for South America), the project involves joint efforts from other Latin American institutions with the aim of studying [...]ver notícia -
Extrasolar Asteroid Has Been Orbiting the Sun for 4.5 Billion Years
Publicado em 21 maio 2018Released by Fundação de Amparo à Pesquisa do Estado de São Paulo - The Solar System is much vaster and more complex than is usually assumed. The Sun's gravitational pull on the gravitational fields of the nearest stars is estimated to extend for approximately two light-years (125 astronomical units), meaning the light emitted by the Sun takes approximately two years to reach the outer edge of the Solar System. This enormous gravitational niche is home to millions of objects, from planets [...]ver notícia -
International Consortium Wants to Sequence the DNA of 1.5 Million Species
Publicado em 17 maio 2018Released by Fundação de Amparo à Pesquisa do Estado de São Paulo - Earth is estimated to be home to between 10 million and 15 million eukaryotes - species of plants, animals, fungi, and other organisms with cells in which the chromosomal DNA is organized into a membrane-bound nucleus. Only 14% of these species (2.3 million) are known, and under 0.1% (15,000) have partially or completely sequenced genomes. Knowledge of this small fraction of Earth's biodiversity has facilitated enormous [...]ver notícia -
Mechanism Underlying Malformation Associated with Severe Epilepsy Is Revealed
Publicado em 16 maio 2018Fundação de Amparo à Pesquisa do Estado de São Paulo - One of the most frequent causes of drug-resistant epilepsy, considered a difficult disease to control, is a brain malformation known as focal cortical dysplasia. Patients with this problem present with discreet disorganization in the architecture of a specific region of the cortex, which may or may not be associated with the presence of nerve cells that have structural and functional abnormalities. A new study by the University of [...]ver notícia -
Climate Geoengineering Research Should Include Developing Countries
Publicado em 09 maio 2018Released by Fundação de Amparo à Pesquisa do Estado de São Paulo Placing giant mirrors in orbit to reflect sunlight before it reaches Earth and launching millions of tons of sulfur into the stratosphere to simulate the effects of a major volcanic eruption are among the mind-boggling climate geoengineering projects that are starting to be considered as ways to mitigate the global warming caused by greenhouse gases. The impact of this kind of initiative on global ecosystems remains highly [...]ver notícia -
An Innovation That Opens Horizons for Greenhouse Gases' Remote Monitoring
Publicado em 09 maio 2018Several attempts have been made to develop miniaturized FTIR spectrometers for integration into drones to monitor greenhouse gases remotely, or for integration into smartphones and other devices. However, current miniaturized devices are costly to produce. Scientists at the University of Campinas’s Device Research Laboratory (LPD-UNICAMP) in Brazil, collaborating with colleagues at the University of California San Diego in the United States, have overcome these constraints by developing an [...]ver notícia -
Scientists hark back to Pleistocene to trace prioritary areas for conservation
Publicado em 07 maio 2018Released by Fundação de Amparo à Pesquisa do Estado de São Paulo Identifying priority areas for action is a major challenge in biodiversity conservation projects. A group of researchers have chosen an approach based on past scenarios to try to understand the history of climate conditions in the regions analyzed. "The regions that have suffered least from climate change in the last 21,000 years are those in which the fewest local extinctions have occurred. These regions stand out for [...]ver notícia -
Research Reveals New Aspects of Superconductivity And Correlated Phenomena
Publicado em 12 abril 2018Released by Fundação de Amparo à Pesquisa do Estado de São Paulo Discovered accidentally over a century ago, the phenomenon of superconductivity continues to inspire a technological revolution. In 1911, while studying the behavior of solid mercury supercooled to 4 K (-269 °C), Dutch physicist Heike Kamerlingh Onnes (1853-1926) observed for the first time that certain materials conducted electricity with neither resistance nor losses at temperatures in the vicinity of absolute [...]ver notícia -
An Index Measures Similarity Between Cancer Cells And Pluripotent Stem Cells
Publicado em 06 abril 2018Released by Fundação de Amparo à Pesquisa do Estado de São Paulo The theory that cancer progression involves the acquisition by tumor cells of features similar to those of stem cells has gained strength in the scientific community. According to this theory, tumor cells tend to "forget" the tissue from which they originated as the disease progresses, acquiring an undifferentiated phenotype associated with heightened aggressiveness and treatment resistance. In a study whose findings were [...]ver notícia