Science 28Feb2020
changes, leading to the formation of a very different triangular shape (Fig. 4C). D4-D5 ro- tates 120° en bloc to become co-line ...
J-chain residue Arg^105 , which in turn packs onto Tyr^576 of Fcm5B. pIgR/SC residue His^32 packs against J-chain residue Tyr^13 ...
OPTICS Ultrafast control of vortex microlasers Can Huang^1 , Chen Zhang^1 , Shumin Xiao1,2, Yuhan Wang^1 , Yubin Fan^1 , Yilin L ...
theradiusofthehole,wepreservetheQ factor of mode 1 throughout the operational range. This mode represents the topology- protecte ...
excitation. The laser systems can solve this problem in a simpler way. The exceptional gain corresponds to the imaginary part of ...
states: a donut and two lobes ( 27 ). Consider- ing the transition time, such a binary tran- sition is reliable for applications ...
ORGANIC CHEMISTRY Aminoalkyl radicals as halogen-atom transfer agents for activation of alkyl and aryl halides Timothée Constant ...
Density functional theory calculations pre- dicted this XAT to be kinetically feasible, involving a polarized transition state w ...
product 4 by favorable HAT from methyl thio- glycolate (S–H BDE = 87 kcal mol–^1 ). Lastly, SET between the thiyl radical and 4C ...
achieved efficient deuteration of primary, sec- ondary, and tertiary alkyl iodides in nearly quantitative yields ( 5 to 12 ). Th ...
radicalI-bwas essentially unreactive toward electron-poor olefins [calculated rate constant kcalc~10−^1 M–^1 s–^1 ( 21 )], bromi ...
ACKNOWLEDGMENTS We thank D. Heyes for help with laser flash photolysis studies.Funding:D.L. thanks EPSRC for a Fellowship (EP/P0 ...
FLUID DYNAMICS Hidden fluid mechanics: Learning velocity and pressure fields from flow visualizations Maziar Raissi1,2*†, Alirez ...
For example, using several snapshots of con- centration fields (inspired by the drawings of da Vinci in Fig. 1A), we obtained qu ...
optimizer enable us to penalize the equations at virtually“infinitely”many points. More- over, in tables S2 and S3, we demonstra ...
conditions imposed at the cylinder wall (c= 0or@c/@n= 0) to generate the training data. Next, we focused on internal flows, firs ...
BATTERIES Kinetic pathways of ionic transport in fast-charging lithium titanate Wei Zhang^1 †, Dong-Hwa Seo^2 ‡, Tina Chen2,3*, ...
(~61.5 eV) during cycling. Nonetheless, subtle but clear changes occurred within the pre-edge region, as shown in the intensity ...
Upon discharging and subsequent charging, the pre-peak S remained at nearly the same position. However, a new pre-peak emerged a ...
lengths (see also the projected density of states in fig. S13). To understand the effect of high (dis)charge rate on pre-peak M ...
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