Results 11 to 20 of about 2,567,418 (399)
Mandating Limits on Workload, Duty, and Speed in Radiology.
Radiology, 2022 Research has not yet quantified the effects of workload or duty hours on the accuracy of radiologists. With the exception of a brief reduction in imaging studies during the 2020 peak of the COVID-19 pandemic, the workload of radiologists in the United ...
Robert G. Alexander +6 more
semanticscholar +1 more source
Proton conductors for heavy-duty vehicle fuel cells
Joule, 2021 Summary Fuel cells utilize the chemical energy of liquid or gaseous fuels to generate electricity. As fuel cells extend their territory to include heavy-duty vehicles, new demands for proton conductors, a critical component of fuel cells, have emerged. A
C. Gittleman +4 more
semanticscholar +1 more source
Energies, 2023 Unsteady numerical simulations, coupled with the SST (Shear Stress Transport) k-ω turbulence model, were conducted to study the mixing-enhancement characteristics of the excited jet generated by the fluidic oscillator and the air tab in a single channel ...
Ming Li +7 more
doaj +1 more source
Line Widths of Single-Electron Tunneling Oscillations: Experiment and Numerical Simulations [PDF]
, 2005 We present experimental and numerical results from a real-time detection of time-correlated single-electron tunneling oscillations in a one-dimensional series array of small tunnel junctions.
Bylander, Jonas, Delsing, Per, Duty, Tim
core +3 more sources
Numerical Investigation on Mechanism of Swirling Flow of the Prefilming Air-Blast Fuel Injector
Energies, 2023 Prefilming air-blast atomizers are widely used in modern gas turbine combustors. Due to insufficient awareness of the coupling mechanism of multi-stage swirling flow in gas turbines, there is a lack of effective methods for flow field optimization in ...
Cheng Cao +7 more
doaj +1 more source
Applied Sciences, 2020 Due to the complexity of the internal flow field of compressors, the aerodynamic design and optimization of a highly loaded axial compressor with high performance still have three problems, which are rich engineering design experience, high dimensions ...
Song Huang +5 more
doaj +1 more source
International Journal of Aerospace Engineering, 2021 In the present study, a numerical simulation was conducted to investigate the influence of surface roughness on the aerodynamic performance of a 1.5-stage highly loaded axial compressor at low Reynolds number.
Hongzhi Cheng +5 more
doaj +1 more source
Unsteady Effects of Wake on Downstream Rotor at Low Reynolds Numbers
Energies, 2022 In a compressor, the periodic wake is an inherently unsteady phenomenon that affects the downstream flow conditions and loading distribution. Thus, understanding the physical mechanisms of these unsteady effects is important for eliminating flow losses ...
Lin Li +4 more
doaj +1 more source
Collectives' Duties and Collectivization Duties [PDF]
Australasian Journal of Philosophy, 2013 Plausibly, only moral agents can bear action-demanding duties. This places constraints on which groups can bear action-demanding duties: only groups with sufficient structure-call them collectives-have the necessary agency. Moreover, if duties imply ability then moral agents (of both the individual and collectives varieties) can bear duties only over ...
openaire +3 more sources
Aerospace, 2022 A detailed numerical simulation of a transonic tandem fan stage was conducted, and the change rule of the flow structure inside the fan stage under the design and off-design conditions was discussed to determine the internal flow mechanisms.
Chuangxin Zhou +2 more
doaj +1 more source