Results 21 to 30 of about 4,494,023 (283)

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

Work-Related Stress, Physio-Pathological Mechanisms, and the Influence of Environmental Genetic Factors [PDF]

open access: yes, 2019
Work-related stress is a growing health problem in modern society. The stress response is characterized by numerous neurochemicals, neuroendocrine and immune modifications that involve various neurological systems and circuits, and regulation of the gene
Emanuele Cannizzaro   +3 more
core   +1 more source

Modeling and Optimization of Dual Active Bridge DC-DC Converter with Dead-Time Effect under Triple-Phase-Shift Control

open access: yesEnergies, 2019
Dead-time effect has become an apparent issue in high-switching-frequency high-power dual active bridge (DAB) DC-DC converter. This paper gives a detailed analysis of phase-shift errors effect caused by dead time, including output voltage offset, soft ...
Chaochao Song   +4 more
doaj   +1 more source

Plasticity in current-driven vortex lattices [PDF]

open access: yes, 2001
We present a theoretical analysis of recent experiments on current-driven vortex dynamics in the Corbino disk geometry. This geometry introduces controlled spatial gradients in the driving force and allows the study of the onset of plasticity and tearing
A. Pertsinidis   +27 more
core   +1 more source

Continuum mechanics, stresses, currents and electrodynamics [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2016
The Eulerian approach to continuum mechanics does not make use of a body manifold. Rather, all fields considered are defined on the space, or the space–time, manifolds. Sections of some vector bundle represent generalized velocities which need not be associated with the motion of material points.
openaire   +2 more sources

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

Primary and secondary oxidative stress in Bacillus [PDF]

open access: yes, 2011
Coping with oxidative stress originating from oxidizing compounds or reactive oxygen species (ROS), associated with the exposure to agents that cause environmental stresses, is one of the prerequisites for an aerobic lifestyle of Bacillus spp. such as B.
Abee, T., Mols, J.M.
core   +7 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

A modulated shear to entropy ratio [PDF]

open access: yes, 2014
We study correlation functions in an equilibrated spatially modulated phase of Einstein-Maxwell two-derivative gravity. We find that the ratio of the appropriate low frequency limit of the stress-stress two point function to the entropy density is ...
Ovdat, O., Yarom, A.
core   +2 more sources

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

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