Results 21 to 30 of about 1,609,274 (165)

The Distribution of Shearing Stresses in a Tidal Current [PDF]

open access: yesGeophysical Journal International, 1959
Summary Observations were made in a tidal current off Red Wharf Bay, Anglesey, North Wales. The frictional stress at the bottom, Fb, was determined from the velocity profile within the first zm above the bottom and found to be related to the velocity at I m by a quadratic law, Fb = kpUl2, where K has the value 3-5 x 10-3. The corresponding value of the
Bowden, K. F.   +2 more
openaire   +2 more sources

An Efficiency-Optimized Isolated Bidirectional DC-DC Converter with Extended Power Range for Energy Storage Systems in Microgrids

open access: yesEnergies, 2012
This paper proposes a novel extended-single-phase shift (ESPS) control strategy of isolated bidirectional full-bridge DC-DC converters (IBDCs) which are a promising alternative as a power electronic interface in microgrids with an additional function of ...
Xiaolong Shi, Jiuchun Jiang, Xintao Guo
doaj   +1 more source

Evaluation of the current in situ stress in the middle Permian Maokou Formation in the Longnüsi area of the central Sichuan Basin, China

open access: yesOpen Geosciences, 2023
The middle Permian Maokou Formation in the Longnüsi area in the central Sichuan Basin is currently a key formation for exploration and development. The evaluation of the current in situ stress in this area is of great significance for fracture prediction,
Zhao Tianbiao   +4 more
doaj   +1 more source

A Unified Analysis of DC–DC Converters’ Current Stress

open access: yesEnergies, 2023
There is always a need to analyze current signals generated by various DC–DC converters. For example, to determine the current stress experienced by semiconductor devices and to evaluate active and reactive power consumption in converters.
Michael Njoroge Gitau   +2 more
doaj   +1 more source

The furosemide stress test: current use and future potential

open access: yesRenal Failure, 2021
Loop diuretics are among the most widely used drugs worldwide and are commonly employed in the management of complications associated with acute kidney injury (AKI), namely volume overload and electrolyte management.
Blaithin A. McMahon, Lakhmir S. Chawla
doaj   +1 more source

Biomimetic Prosthetic Hand Enabled by Liquid Crystal Elastomer Tendons

open access: yesMicromachines, 2021
As one of the most important prosthetic implants for amputees, current commercially available prosthetic hands are still too bulky, heavy, expensive, complex and inefficient.
Haiqing Lu   +5 more
doaj   +1 more source

Current Stress Minimization Based on Particle Swarm Optimization for Dual Active Bridge DC–DC Converter

open access: yesActuators
Under extended-phase-shift (ESP) control, the current stress of the dual active bridge converter (DAB) is relatively high, which reduces the efficiency of the converter.
Dabin Jia, Dazhi Wang
doaj   +1 more source

Stress evolution and thickness change of a lithium-ion pouch cell under various cycling conditions

open access: yesJournal of Power Sources Advances, 2022
To design large-sized lithium-ion battery modules for the application of electric vehicles and grid-level energy storage, it is of important significance to understand how stress and dimension of a single pouch cell fluctuate during charge/discharge ...
Congrui Jin   +3 more
doaj   +1 more source

Wave-Current Impact on Shear Stress Patterns around 3D Shallow Bedforms

open access: yesJournal of Marine Science and Engineering, 2022
Observations from wave basin experiments and wave-resolving numerical simulations demonstrate the effect of wave-current interaction on shear stress around a sandy mound.
Julia Hopkins   +3 more
doaj   +1 more source

Application of Alternating Current Stress Measurement Method in the Stress Detection of Long-Distance Oil Pipelines

open access: yesEnergies, 2022
With the development of pipeline networks, many safety accidents were caused by pipeline stress concentration; it is of great significance to accurately monitor the pipeline stress state for maintaining pipeline safety.
Jinyao Duan   +4 more
doaj   +1 more source

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