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An all-organic laser that is electrically driven

mercredi 27 septembre 2023 par Stéphane Kéna-Cohen

Nature, Published online: 27 September 2023; doi:10.1038/d41586-023-02935-5An organic light-emitting diode has been integrated with an optically driven organic laser to produce laser light from electricity. The design bypasses many of the challenges posed by direct electrical input in such (...)

Nature

Resonant X-ray excitation of the nuclear clock isomer ⁴⁵Sc

mercredi 27 septembre 2023 par Yuri Shvyd’ko, Ralf Röhlsberger, Olga Kocharovskaya, Jörg Evers, Gianluca Aldo Geloni, Peifan Liu, Deming Shu, Antonino Miceli, Brandon Stone, Willi Hippler, Berit Marx-Glowna, Ingo Uschmann, Robert Loetzsch, Olaf Leupold, Hans-Christian Wille, Ilya Sergeev, Miriam Gerharz, Xiwen Zhang, Christian Grech, Marc Guetg, Vitali Kocharyan, Naresh Kujala, Shan Liu, Weilun Qin, Alexey Zozulya, Jörg Hallmann, Ulrike Boesenberg, Wonhyuk Jo, Johannes Möller, Angel Rodriguez-Fernandez, Mohamed Youssef, Anders Madsen, Tomasz Kolodziej

Nature, Published online: 27 September 2023; doi:10.1038/s41586-023-06491-wResonant X-ray excitation of the 45Sc nuclear isomeric state was achieved by irradiation of a Sc-metal foil with 12.4-keV photon pulses from a state-of-the-art X-ray free-electron laser, allowing a high-precision (...)

Nature

Measuring the ecological benefits of protected areas

mercredi 27 septembre 2023 par Ana S. L. Rodrigues, Marie-Morgane Rouyer

Nature, Published online: 27 September 2023; doi:10.1038/d41586-023-02676-5Are protected areas slowing down global biodiversity declines? A global analysis provides evidence that they are, although effects vary across groups of species, and what happens outside protected areas matters, (...)

Nature

Respiratory syncytial virus co-infections might conspire to worsen disease

mercredi 27 septembre 2023 par Katherine Bourzac

Nature, Published online: 27 September 2023; doi:10.1038/d41586-023-02959-xEmerging evidence suggests that pathogens can pair up to work together against immune system defences.

Nature

Universities axe diversity statements in wake of US Supreme Court ruling on affirmative action

mercredi 27 septembre 2023 par Amanda Heidt

Nature, Published online: 27 September 2023; doi:10.1038/d41586-023-03049-8Higher-education campaigners fear that removing the option for job applicants to provide the statements will make the academic workforce less diverse.

Nature

The search for a connection between RSV and asthma

mercredi 27 septembre 2023 par Sandy Ong

Nature, Published online: 27 September 2023; doi:10.1038/d41586-023-02961-3The consequences of respiratory syncytial virus infection sometimes linger for years — and scientists are trying to work out whether there’s a causal link.

Nature

AI and science: what 1,600 researchers think

mercredi 27 septembre 2023 par Richard Van Noorden, Jeffrey M. Perkel

Nature, Published online: 27 September 2023; doi:10.1038/d41586-023-02980-0A Nature survey finds that scientists are concerned, as well as excited, by the increasing use of artificial-intelligence tools in research.

Nature

COVID lockdowns altered babies’ microbiomes

mercredi 27 septembre 2023 par Lilly Tozer

Nature, Published online: 27 September 2023; doi:10.1038/d41586-023-02994-8Isolation can have lasting effects on the composition of microbes in the gut, but links to other health conditions are still poorly understood.

Nature

Coordinating the first heartbeat

mercredi 27 septembre 2023 par Joshua Bloomekatz, Neil C. Chi

Nature, Published online: 27 September 2023; doi:10.1038/d41586-023-02938-2An impressive combination of computational modelling and experimental techniques in live zebrafish embryos reveals how the heart initiates its organized and rhythmic (...)

Nature

What’s the best chatbot for me? Researchers put LLMs through their paces

mercredi 27 septembre 2023 par Elizabeth M. Humphries, Carrie Wright, Ava M. Hoffman, Candace Savonen, Jeffrey T. Leek

Nature, Published online: 27 September 2023; doi:10.1038/d41586-023-03023-4When it comes to large language models, there’s one for every occasion. Find the most appropriate match for you in our AI speed-dating feature.

Nature