Science - USA (2022-02-18)

isolated yield of 6. The precise nature of this electrode modification was studied in detail (see below) and supported the notio ...

trifluoroborate-containing coupling partner ( 23 ). This modular and intuitive approach takes place in six steps (longest linear ...

approaches that construct polyolefin cycliza- tion precursors through Wittig-like transforms. By contrast, the modular assembly ...

750 18 FEBRUARY 2022¥VOL 375 ISSUE 6582 science.orgSCIENCE Fig. 4. The presence of silver nanoparticles on the electrode surface ...

AgNO 3 added, suggesting that silver reduction preceded the cross-coupling reaction (figs. S19 and S20). Despite the use of nano ...

when using the methyl ester vinyl iodide 40. Use of halo-acid 5 in these measurements gen- erated a catalytic current without mu ...

RIVER ECOLOGY Reducing adverse impacts of Amazon hydropower expansion Alexander S. Flecker^1 , Qinru Shi^2 , Rafael M. Almeida1, ...

754 18 FEBRUARY 2022¥VOL 375 ISSUE 6582 science.orgSCIENCE B Installed capacity (MW) Density A D E C FG ) Emission intensity (kg ...

floodplain inundation, and habitat availability ( 18 ). Hydrologic connectivity of habitats via nat- ural flows is vital for sus ...

basin-wide hydropower planning to include only one or a few environmental objectives at a time ( 14 , 31 – 34 ). Yet rivers prov ...

SCIENCEscience.org 18 FEBRUARY 2022¥VOL 375 ISSUE 6582 757 40 60 80 100 120 Installed capacity (GW) 0.4 0.45 0.5 0.55 River conn ...

( 16 ), and here we provide advanced computa- tional methods for basin-wide assessment at thescaleoftheworld’s largest river net ...

possible dam portfolios is complementary to other approaches for assessing regional-scale impacts of Amazon dams that identify s ...

F. A. M. de Faria, P. Jaramillo, H. O. Sawakuchi, J. E. Richey, N. Barros,Environ. Res. Lett. 10 , 124019 (2015). J. M. Gomes-S ...

SCIENCEscience.org 18 FEBRUARY 2022¥VOL 375 ISSUE 6582 761 Fig. 1. Cryo-EM structure of the Omicron spike protein.(A)Aschematic ...

( 1 ). The RBD mediates attachment to human cells through the ACE2 receptor and is the pri- mary target of neutralizing antibodi ...

in a high-resolution structure of the spike protein–ACE2 complex. Cryo-EM structural analysis of the human ACE2–Omicron spike pr ...

in global prevalence, and to wild-type SARS- CoV-2,giventhatmostSARS-CoV-2vaccine immunogens at this time are based on this sequ ...

CULTURAL HERITAGE Forgotten books: The application of unseen species models to the survival of culture Mike Kestemont^1 *†, Folg ...

and the Knights of the Round Table, for ex- ample, have had a long-lasting impact. Before movable-type printing in Europe (~1450 ...