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作者：Brainard, Jeffrey
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作者：Pinson, Anneline; Maricic, Tomislav; Zeberg, Hugo; Paeaebo, Svante; Huttner, Wieland B.
作者单位：Max Planck Society; Max Planck Society; Karolinska Institutet
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作者：Tang, Guoqiang; Besemer, Matthieu; Kuijpers, Stach; Groenenboom, Gerrit C.; van der Avoird, Ad; Karman, Tijs; van de Meerakker, Sebastiaan Y. T.
作者单位：Radboud University Nijmegen
摘要：Collisions between cold polar molecules represent a fascinating research frontier but have proven hard to probe experimentally. We report measurements of inelastic cross sections for collisions between nitric oxide (NO) and deuterated ammonia (ND3) molecules at energies between 0.1 and 580 centimeter-1, with full quantum state resolution. At energies below the similar to 100-centimeter-1 well depth of the interaction potential, we observed backward glories originating from peculiar U-turn traj...
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作者：O'Grady, Cathleen
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作者：Herai, Roberto H.; Semendeferi, Katerina; Muotri, Alysson R.
作者单位：Pontificia Universidade Catolica do Parana; University of California System; University of California San Diego; University of California System; University of California San Diego; University of California System; University of California San Diego
摘要：Pinson et al. (1) concluded that the modern human TKTL1 gene is responsible for an increased number of cortical neurons. We show that the putative Neanderthal variant of TKTL1 is present in modern human backgrounds. We dispute their argument that this genetic variant is responsible for brain differences in modern humans as opposed to Neanderthals.
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作者：Muniz, A. L. Marques; Wu, F. O.; Jung, P. S.; Khajavikhan, M.; Christodoulides, D. N.; Peschel, U.
作者单位：Friedrich Schiller University of Jena; State University System of Florida; University of Central Florida; Warsaw University of Technology; University of Southern California
摘要：Statistical mechanics demands that the temperature of a system is positive provided that its internal energy has no upper bound. Yet if this condition is not met, it is possible to attain negative temperatures for which higher-order energy states are thermodynamically favored. Although negative temperatures have been reported in spin and Bose-Hubbard settings as well as in quantum fluids, the observation of thermodynamic processes in this regime has thus far remained elusive. Here, we demonstr...
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作者：Sheppard, Kathleen
作者单位：University of Missouri System; Missouri University of Science & Technology
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作者：Hu, Haili
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作者：von Muenchow, Tristan; Dana, Suman; Xu, Yang; Yuan, Binbin; Ackermann, Lutz
作者单位：University of Gottingen
摘要：Enantioselective redox transformations typically rely on costly transition metals as catalysts and often stoichiometric amounts of chemical redox agents as well. Electrocatalysis represents a more sustainable alternative, in particular through the use of the hydrogen evolution reaction (HER) in place of a chemical oxidant. In this work, we describe strategies for HER-coupled enantioselective aryl carbon-hydrogen bond (C-H) activation reactions using cobalt in place of a precious metal catalyst...
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作者：Fernandes, Stephannie; Couto, Thiago B. A.; Ferreira, Manuel; Pompeu, Paulo S.; Athayde, Simone; Anderson, Elizabeth P.; Fernandes, Geraldo W.
作者单位：State University System of Florida; Florida International University; University of Miami; Universidade Federal de Goias; Universidade Federal de Lavras; Universidade Federal de Minas Gerais
