Science - USA (2021-07-09)

streams ( 7 , 8 ). He noted that offset increases channel length without changing the drop in elevation (Fig. 1A), thus reducing ...

( 15 ). Finally, by combining Eq. 1 and Eq. 2 and approximating the integral in Eq. 1 as a product, we obtain a characteristic a ...

transport rates are high, the evolution of chan- nels after individual earthquakes on centennial time scales may better capture ...

MECHANOCHEMISTRY Flyby reaction trajectories: Chemical dynamics under extrinsic force Yun Liu1,2, Soren Holm3,4,5, Jan Meisner3, ...

bisalkenes in an 8:1 ratio. The observation of (E,Z) by-product from theU-isomer suggests that the two radicals behave independe ...

the same sonication conditions, mechanochem- ical production ofa,b-conjugated diesters was observed for theA- andD-isomer (fig. ...

compounds (Fig. 4A). When the pulling force was varied from 1 to 2 nN, energy barriers of the second scissions were lowered by 2 ...

At 1.3 nN, the NDEs improve product selec- tivity by fourfold forUin comparison to the statistical outcome. The apparent enhance ...

SUPERCONDUCTIVITY Magnetic excitations in infinite-layer nickelates H. Lu1,3, M. Rossi^1 , A. Nag^2 , M. Osada^3 ,D.F.Li^1 †, K. ...

measurements, we adopted an experimental geometry well established to measure mag- netic spin excitations in transition-metal ox ...

whereSi,Sj, andSi′denote Heisenberg spins at sitei, nearest-neighbor sitesj, and the next- nearest-neighbor sitesi′, respectivel ...

The other notable behavior revealed by the fits is in the spin wave damping factorgq(Fig. 3). The width of the magnetic peaks (~ ...

CATALYSIS Stable and selective catalysts for propane dehydrogenation operating at thermodynamic limit Ali Hussain Motagamwala1,2 ...

the superior performance of the Pt 1 Sn 1 /SiO 2 catalyst. Increasing the Sn:Pt atomic ratio on SiO 2 -supported catalysts to th ...

propylene yield data, reported as a function of time for different catalysts, were analyzed assuming first-order deactivation ki ...

Data in Fig. 3A show that the process of mixing chloroplatinic acid (H 2 PtCl 6 ) and tin(II) chloride (SnCl 2 ) in 0.1 M hydroc ...

SCIENCEsciencemag.org 9JULY2021•VOL 373 ISSUE 6551 221 Fig. 4. Characterization of Pt 1 Sn 1 /SiO 2 catalysts.(A)DRIFTSspectraof ...

To further confirm the presence of PtSn surface alloys, XPS of the freshly reduced Pt 1 Sn 1 /SiO 2 catalyst showed that the ato ...

PHYSIOLOGY Skeletal muscle thermogenesis enables aquatic life in the smallest marine mammal Traver Wright1,2*, Randall W. Davis^ ...

ratio (FCR; OXPHOS/ETS) of 0.87 (Table 1 and table S1), indicating that phosphorylation ca- pacity limits maximum OXPHOS respira ...