Science - USA (2020-01-17)

figs. S33 to S35). At the same time, tracers of the marine carbon cycle indicate a profound change in marine ecosystem function. ...

L. Q. Li, G. Keller,Geology 26 , 995–998 (1998). R. D. Norris, P. A. Wilson, P. Blum, Expedition 342 Scientists, inProc. IODP, ...

PALEONTOLOGY A high-resolution summary of Cambrian to Early Triassic marine invertebrate biodiversity Jun-xuan Fan1,2, Shu-zhong ...

incompleteness substantially ( 22 ). As is often the case in complex optimal modeling prob- lems, CONOP.SAGA does not yield a si ...

By contrast, our higher-resolution summary shows the Frasnian–Famennian event to be embedded within a protracted diversity de- c ...

Event along with brachiopods and crusta- ceans. Fusulinid diversity declined slightly until the Lopingian, with the clade disapp ...

positively with increasing long-term diversity before the early Visean ( 58 ). After the post- Visean appearance of a more moder ...

proxy data and/or discrepancies between the dates assigned to our biodiversity curve and the environmental proxy curves. REFEREN ...

REPORT ◥ SOLAR PHYSICS Decay of the coronal magnetic field can release sufficient energy to power a solar flare Gregory D. Fleis ...

field decay ends around the time of the peak microwave emission (16:00 UTC), which is consistent with the theoretical prediction ...

shows the evolution of the (lower bound of the) nonthermal energy density, assuming a power-law distribution of electrons with a ...

ORGANIC CHEMISTRY Nitromethane as a nitrogen donor in Schmidt-type formation of amides and nitriles Jianzhong Liu^1 , Cheng Zhan ...

Michael addition reactions ( 39 )(Fig.1B).By contrast, the reactivity of nitromethane as a nitrogen donor has been scarcely deve ...

facilitate the condensation and the subsequent rearrangement processes for Schmidt-type reac- tions (Fig. 1C). Thus, this cascad ...

aromatic nitro group in ( 53 , 66 ,and 71 )was not disturbed, highlighting the high chemose- lectivity of the nitromethane activ ...

the final products probably through the fast Beckmann-type rearrangement of the corre- sponding oximesVII(Fig. 4C). REFERENCES A ...

QUANTUM CRITICALITY Singular charge fluctuations at a magnetic quantum critical point L. Prochaska^1 ,X.Li^2 †, D. C. MacFarland ...

the slow long-wavelength fluctuations of the order parameter alone describe a Gaussian fixed point, wherew/Tscaling is violated. ...

is uncovered in its strange metal regime. It is important to explore the dynamical scaling of the optical conductivity in other ...

OPTICS Subwavelength dielectric resonators for nonlinear nanophotonics Kirill Koshelev1,2, Sergey Kruk^1 , Elizaveta Melik-Gayka ...