Science - 16.08.2019
REPORT ◥ GRAVITATION Relativistic redshift of the star S0-2 orbiting the Galactic Center supermassive black hole Tuan Do^1 *, Au ...
of the spectroscopic data showed that one spec- troscopic instrument [Near-Infrared Camera 2 (NIRC2)] had additional systematic ...
found to be 20 km s−^1 for the Keck and Gemini observations. The astrometric positions of S0-2 with re- spect to Sgr A* were pla ...
center of the reference frame, an offset for the RVvz 0 , and the redshift parameterU. Several statistical tests were performed ...
measurements. G.D.M., A.H., and T.D. participated in statistical modeling and model comparisons. K.M., R.C., P.W., and J.E.L. pa ...
ROBOTICS Reducing the metabolic rate of walking and running with a versatile, portable exosuit Jinsoo Kim^1 , Giuk Lee^2 , Roman ...
for activity logging ( 31 ) and controlling ro- botic leg prostheses ( 32 ), but similar accuracy has not yet been demonstrated ...
variability of the reduction in metabolic rate during treadmill running was sizable but within the range of variabilities found ...
This work demonstrates a lightweight and minimally restrictive robotic assistive device that can reduce the metabolic rate of bo ...
S. Galle, P. Malcolm, W. Derave, D. De Clercq,Eur. J. Appl. Physiol. 114 , 2341–2351 (2014). W. Hoogkamer, S. Kipp, B. A. Spier ...
OPTICS Sub–single-exciton lasing using charged quantum dots coupled to a distributed feedback cavity Oleg V. Kozlov^1 , Young-Sh ...
realization of the charged-QD lasing scheme. An effective approach for reducing Auger decay rates is through smoothing the QD co ...
exposing the QD film to pulsed 400-nm exci- tation (supplementary text S5). To quantify the level of charging, we monitor the PL ...
LiEt 3 BH increased to 0.5 ± 0.1 (fig. S11), indicating that at this point the benefits due to enhanced band-edge bleaching bec ...
ASTROCHEMISTRY Quantum-state–selective electron recombination studies suggest enhanced abundance of primordial HeH Oldřich N ...
becomes much smaller (by a factor up to ~8) than that for room temperature conditions and remains nearly as low down toEde 0 :00 ...
for the abundance of HeH+are radiative asso- ciation of H+and He for production and DR for destruction. Hence, the HeH+abundance ...
D. R. G. Schleicheret al., .Astron. Astrophys. 490 , 521– 535 (2008). J. Semaniaket al.,Phys. Rev. A 54 , R4617–R4620 (1996). R ...
PERVOSKITES Thermal unequilibrium of strained black CsPbI 3 thin films Julian A. Steele^1 , Handong Jin^2 , Iurii Dovgaliuk^3 , ...
Figure 2C shows analysis of the 2qscattering intensities generated along directionsqx,y,qz, andqx,y,z.Comparedwiththecubica-phas ...
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