Results 1 to 10 of about 559,608 (264)

Metabolic correlates to critical speed in murine models of sickle cell disease [PDF]

open access: yesFrontiers in Physiology, 2023
Introduction: Exercise intolerance is a common clinical manifestation in patients with sickle cell disease (SCD), though the mechanisms are incompletely understood.Methods: Here we leverage a murine mouse model of sickle cell disease, the Berkeley mouse,
Francesca I. Cendali   +10 more
doaj   +2 more sources

Optimization of the Critical Speed Concept for Tactical Professionals: A Brief Review [PDF]

open access: yesSports, 2021
Tactical professionals often depend on their physical ability and fitness to perform and complete occupational tasks to successfully provide public services or survive on the battlefield.
Nathan D. Dicks, Robert W. Pettitt
doaj   +2 more sources

Determination of the Critical Speed of a Cracked Shaft from Experimental Data [PDF]

open access: yesSensors, 2022
In this work, a procedure to obtain an accurate value of the critical speed of a cracked shaft is presented. The method is based on the transversal displacements of the cracked section when the shaft is rotating at submultiples of the critical speed. The
Belén Muñoz-Abella   +3 more
doaj   +2 more sources

Effects of Submaximal Performances on Critical Speed and Power: Uses of an Arbitrary-Unit Method with Different Protocols [PDF]

open access: yesSports, 2019
The effects of submaximal performances on critical speed (SCrit) and critical power (PCrit) were studied in 3 protocols: a constant-speed protocol (protocol 1), a constant-time protocol (protocol 2) and a constant-distance protocol (protocol 3).
Henry Vandewalle
doaj   +2 more sources

CRITICAL SPEED IN PEDESTRIANS’ RELATIVE MOTION REGARDING LIMITED VISIBILITY ZONE FROM DRIVER SEAT [PDF]

open access: yesProceedings on Engineering Sciences, 2023
Safe driving is related to the choice of speed by automobile drivers according to atmospheric conditions, as well as when driving in zones of both reduced visibility and of limited visibility. Reduced visibility is associated with natural phenomena, such
Hristo Uzunov   +2 more
doaj   +1 more source

Optimum Design of Journal Bearings Dimensions for Rotating Machines [PDF]

open access: yesEngineering and Technology Journal, 2020
The values of Many parameters which involve in the design of fluid film journal bearings mainly depend on the bearing applied load when using the conventional design method to design the journal bearings, in this study, as well as applied bearing load ...
Tariq Hammza, Ehab Abas, Nassear Hmoad
doaj   +1 more source

Assessment of Risky Cornering on a Horizontal Road Curve by Improving Vehicle Suspension Performance

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2021
Vehicle stability during cornering on horizontal road curves is a risky stage of travel because of additional factors acting. The main stability factor is centrifugal force, which depends on road curve sharpness and is very sensitive to driving speed ...
Vidas Žuraulis, Vytenis Surblys
doaj   +1 more source

Unbalance Response Analysis of a Rotor Kit with Two Identical Discs Located Between Bearings

open access: yesTehnički Glasnik, 2023
In this paper, the dynamic behavior of a rotor kit with two identical disks located between the plain bearings was analyzed. Modal and harmonic analysis of this rotor kit configuration were performed in the Ansys software package.
Marko Katinić   +3 more
doaj   +1 more source

Experimental research of ice cuttings transport by air while drilling of the snow-firn layer

open access: yesЛëд и снег, 2023
The snow-firn layer of the glaciers of Antarctica and Greenland contains data on the composition of the atmosphere in the past, volcanic eruptions, forest fires, anthropogenic pollution, and many other unique information.
S. A. Ignatiev   +4 more
doaj   +1 more source

Predicting Critical Speed of Railway Tracks Using Artificial Intelligence Algorithms

open access: yesVibration, 2023
Motivated by concerns regarding safety and maintenance, the operational speed of a railway line must remain significantly below the critical speed associated with the track–ground system. Given the large number of track sections within a railway corridor
Ana Ramos   +4 more
doaj   +1 more source

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