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Author Correction: Like-minded sources on Facebook are prevalent but not polarizing
Correction to: Nature https://doi.org/10.1038/s41586-023-06297-w Published online 27 July 2023 In the version of this article initially published, the variable described in Supplementary Table 36 as measuring Facebook “strikes” for violations of content policies against “Coordinated Inauthentic Behavior” (CIB) is inaccurate and does not reflect enforcement of the actual CIB policy, which is not a content-level…
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Ultra-sensitive pressure sensing capabilities of defective one-dimensional photonic crystal
Abstract Present research work deals with the extremely sensitive pressure-sensing capabilities of defective one-dimensional photonic crystal structure (GaP/SiO2)N/Al2O3/(GaP/SiO2)N. The proposed structure is realized by putting a defective layer of material Al2O3 in the middle of a structure consisting of alternating layers of GaP and SiO2. The transfer matrix method has been employed to examine the…
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Early-career factors largely determine the future impact of prominent researchers: evidence across eight scientific fields
Abstract Can we help predict the future impact of researchers using early-career factors? We analyze early-career factors of the world’s 100 most prominent researchers across 8 scientific fields and identify four key drivers in researchers’ initial career: working at a top 25 ranked university, publishing a paper in a top 5 ranked journal, publishing most…
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A versatile high-average-power ultrafast infrared driver tailored for high-harmonic generation and vibrational spectroscopy
Abstract We report on an ultrafast infrared optical parametric chirped-pulse amplifier (OPCPA), pumped by a 200-W thin-disk Yb-based regenerative amplifier at a repetition rate of 100 kHz. The OPCPA is tunable in the spectral range 1.4–3.9 (upmu )m, generating up to 23 W of < 100-fs signal and 13 W of < 200-fs idler pulses…
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Keeping secrets in a quantum world
In July 2022, a pair of mathematicians in Belgium startled the cybersecurity world. They took a data-encryption scheme that had been designed to withstand attacks from quantum computers so sophisticated they don’t yet exist, and broke it in 10 minutes using a nine-year-old, non-quantum PC. “I think I was more surprised than most,” says Thomas…
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Cells with cFos and 53BP1 immunoreactivity in the CA1 region of the hippocampus from a young female apolipoprotein E4 (apoE) targeted replacement mouse 1.5 h after fear conditioning
Representative images of cFos and 53BP1 immunoreactive cells in the CA1 region of the hippocampus from a young female apolipoprotein E4 (apoE) targeted replacement mouse 1.5 h after fear conditioning. Images were taken of young (3 month) and middle-aged (12 months) male and female mice that were never exposed to fear conditioning (behaviorally naïve), euthanized 1.5 h…
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How would a starfish wear trousers? Science has an answer
Starfishes are weirdly shaped animals. Scientists have long puzzled over how a starfish body equates to the more typical animal arrangement of a head on one end and trunk or tail on the other. Humans wear trousers on the bottom of their trunks, so you could extrapolate out from that to suggest solutions to the…
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What causes fainting? Scientists finally have an answer
Whether as a result of heat, hunger, standing for too long, or merely at the sight of blood or needles, 40% of people faint at least once in their lifetime. But exactly what causes these brief losses of consciousness — which researchers call ‘syncope’ — has remained a mystery for cardiologists and neuroscientists for a…
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Strange blobs in Earth’s mantle are relics of a massive collision
The protoplanet Theia, which was roughly the size of Mars, slammed into proto-Earth 4.5 billion years ago (artist’s impression).Credit: Hernán Cañellas For decades, scientists have been baffled by two large, mysterious blobs in Earth’s mantle. These rock formations are thousands of kilometres long and slightly denser than their surroundings, hinting that they are made of…
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Out-of-plane cations homogenise perovskite composition for solar cells
Abstract Perovskite solar cells (PSCs) composing the formula of FA1-xCsxPbI3 provide an attractive ption for integrating high efficiency, durable stability and compatibility with upscale fabrication. Despite the Cs cation incorporation potentially enabling a perfect perovskite lattice1,2, the compositional inhomogeneity caused by A-site cation segregation is likely detrimental to the photovoltaic performance of solar cells3,4. Here,…