-
作者:Chandel, Avinash; Debeaubien, Nicolas A.; Ganguly, Anindya; Meyerhof, Geoff T.; Krumholz, Andreas A.; Liu, Jiangqu; Salgado, Vincent L.; Montell, Craig
作者单位:University of California System; University of California Santa Barbara; University of California System; University of California Santa Barbara; BASF; Duke University
摘要:Mosquito-borne diseases affect hundreds of millions of people annually and disproportionately impact the developing world(1,2). One mosquito species, Aedesaegypti, is a primary vector of viruses that cause dengue, yellow fever and Zika. The attraction of Ae. aegypti female mosquitos to humans requires integrating multiple cues, including CO2 from breath, organic odours from skin and visual cues, all sensed at mid and long ranges, and other cues sensed at very close range(3-6). Here we identify...
-
作者:Birch, Max T.; Belopolski, Ilya; Fujishiro, Yukako; Kawamura, Minoru; Kikkawa, Akiko; Taguchi, Yasujiro; Hirschberger, Max; Nagaosa, Naoto; Tokura, Yoshinori
作者单位:RIKEN; University of Tokyo; University of Tokyo
摘要:The coupling of conduction electrons and magnetic textures leads to quantum transport phenomena described by the language of emergent electromagnetic fields1-3. For magnetic skyrmions, spin-swirling particle-like objects, an emergent magnetic field is produced by their topological winding4-6, resulting in the conduction electrons exhibiting the topological Hall effect (THE)7. When the skyrmion lattice (SkL) acquires a drift velocity under conduction electron flow, an emergent electric field is...
-
作者:Ledford, Heidi
-
作者:[Anonymous]
摘要:Tens of thousands of studies evaluating government programmes are collecting dust in institutional vaults. Sharing them could benefit everyone.
-
作者:Bauer, Kohen W.; Mckenzie, N. Ryan; Cheung, Chris T. L.; Gambacorta, Gabriele; Bottini, Cinzia; Nordsvan, Adam R.; Erba, Elisabetta; Crowe, Sean A.
作者单位:University of Hong Kong; University of Victoria; University of Milan; University of Florence; University of British Columbia; University of British Columbia
摘要:Oceanic anoxic events (OAEs) are historical intervals of global-scale ocean deoxygenation associated with hyperthermal climate states and biological crises(1,2). Massive volcanic carbon dioxide (CO2) emissions frequently associated with these events are thought to be a common driver of ocean deoxygenation through several climate-warming-related mechanisms(1,3,4). The Early Cretaceous OAE1a is one of the most intense ocean deoxygenation events, persisting for more than 1 Myr (refs. (5,6)). Howe...
-
作者:Heaton, T. J.; Bard, E.; Bayliss, A.; Blaauw, M.; Bronk Ramsey, C.; Reimer, P. J.; Turney, C. S. M.; Usoskin, I.
作者单位:University of Leeds; Institut de Recherche pour le Developpement (IRD); Universite PSL; College de France; INRAE; Aix-Marseille Universite; Centre National de la Recherche Scientifique (CNRS); Queens University Belfast; University of Oxford; University of Technology Sydney; University of New South Wales Sydney; University of Oulu; University of Oulu
摘要:Radiocarbon (14C) is essential for creating chronologies to study the timings and drivers of pivotal events in human history and the Earth system over the past 55,000 years. It is also a fundamental proxy for investigating solar processes, including the potential of the Sun for extreme activity. Until now, fluctuations in past atmospheric 14C levels have limited the dating precision possible using radiocarbon. However, the discovery of solar super-storms known as extreme solar particle events ...
-
作者:[Anonymous]
摘要:Process breaks down two of the most common plastics into raw ingredients.
-
作者:Vlemmings, Wouter; Khouri, Theo; Arbab, Behzad Bojnordi; De Beck, Elvire; Maercker, Matthias
作者单位:Chalmers University of Technology
摘要:The transport of energy through convection is important during many stages of stellar evolution1,2, and is best studied in our Sun3 or giant evolved stars4. Features that are attributed to convection are found on the surface of massive red supergiant stars5-8. Also for lower-mass evolved stars, indications of convection are found9-13, but convective timescales and sizes remain poorly constrained. Models indicate that convective motions are crucial to produce strong winds that return the produc...
-
作者:Pellerin, Alice; Thomazo, Christophe; Ader, Magali; Rossignol, Camille; Rego, Eric Siciliano; Busigny, Vincent; Philippot, Pascal
作者单位:Centre National de la Recherche Scientifique (CNRS); CNRS - Institute of Ecology & Environment (INEE); Universite Bourgogne Europe; Institut Universitaire de France; Universite Paris Cite; Centre National de la Recherche Scientifique (CNRS); University of Cagliari; University of California System; University of California San Diego; Scripps Institution of Oceanography; Universite de Montpellier; Centre National de la Recherche Scientifique (CNRS); Universidade de Sao Paulo
摘要:The nitrogen isotopic composition of sedimentary rocks (delta N-15) can trace redox-dependent biological pathways and early Earth oxygenation(1,2). However, there is no substantial change in the sedimentary delta N-15 record across the Great Oxidation Event about 2.45 billion years ago (Ga)(3), a prominent redox change. This argues for a temporal decoupling between the emergence of the first oxygen-based oxidative pathways of the nitrogen cycle and the accumulation of atmospheric oxygen after ...
-
作者:Min, Yongyi; Chen, Haoyi; Perucci, Francesca
摘要:The UN wants to put communities at the heart of its data-collection efforts in support of the Sustainable Development Goals. Now governments must step up.