Results 211 to 220 of about 17,392 (264)
Angewandte Chemie, EarlyView.Fe3O4 clusters can be precipitated onto Fe–N–C SACs through a residual‐oxygen‐assisted precipitation approach. Compelling evidence, including operando spectroscopy and ab initio calculations, suggests that Fe3O4‐cluster precipitates not only induce asymmetric electronic structures of Fe‐N4 active center to optimize the OH* adsorption, but also ...
Cheng‐Kai Du +10 more
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Angewandte Chemie, EarlyView.Ordered L12‐Pt3Mn intermetallic alloys are uniformly deposited onto atomically dispersed Mn–N–C supports. The synergistic effect between MnN4 sites and Pt3Mn elevates interfacial binding strength and dissolution barriers while favorably weakening *OH adsorption. It delivers exceptional catalytic activity and stability in fuel cells, serving as an ideal
Gongjin Chen +8 more
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Angewandte Chemie, EarlyView.Constructing atomically coupled W–O–Ru interfacial units on RuO2 triggers a dynamic strain evolution during the oxygen evolution reaction. An initial tensile strain secures structural stability, while a self‐adjusting transition to interfacial compression optimizes catalytic activity.
Yi Guan +7 more
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The Stresses in Rotating Disks
Journal of Fluids Engineering, 1931Abstract This paper comprises the results of a photoelastic investigation, sponsored by The Norton Company, of the stresses in rotating disks. The classical theory of Chree with a few additions is presented, and the results of the experimental determinations are compared with the theory as well as actual breakages of vitrified wheels.
Frost, Thos. H., Whitcomb, K. F.
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Magnetic rotating disk viscometer
International Journal of Thermophysics, 1989A rotating disk viscometer has been developed aiming at measuring the viscosity at the critical consolute point of binary mixtures in the true hydrodynamic limit. The viscometer consists of a small magnetized disk set into slow rotation by a uniformly rotating magnetic field.
BORGHESANI, ARMANDO-FRANCESCO +1 more
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Simultaneity on the Rotating Disk
Foundations of Physics, 2017zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Rotating flows over a rotating disk
Ingenieur-Archiv, 1965Abstract : Local boundary layer approximations of first order are computed for axisymmetric motions which rotate over a rotating disk in the same and opposite directions. The secondary motions, which are produced by the friction forces at the rotating disk, are essentially of pure stagnation type, distorted stagnation type, cell type, and pure wake ...
E. W. Schwiderski, H. J. Lugt
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Rotating Disk Electrode Method
2014In this chapter, to give readers the knowledge how to appropriately use rotating disk electrode (RDE) in their oxygen reduction reaction (ORR) study, fundamentals of both the electron transfer process on electrode surface and diffusion-convection kinetics near the rotating electrode are presented.
Du, Chunyu +3 more
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An Asymptotic Solution of a Rotating Disk
Journal of Applied Mechanics, 1971The solution of the problem of a thin circular disk rotating at a constant angular velocity about its axis is obtained as a formal power series of the thickness-diameter ratio. The matching of the inner and outer expansions at a circular edge is carried out in detail for the stress conditions as well as for the displacement conditions.
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