Results 131 to 140 of about 1,090,030 (231)
Transient Porosity During Fluid‐Mineral Interaction. Part 1: In Situ 4D Tomography
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 6, June 2026.Abstract Fluid‐induced mineral replacement reactions play a key role in controlling porosity generation and permeability evolution in geologic systems. However, the dynamic feedback between pore structure development and fluid transport remains poorly quantified. This study investigates the spatiotemporal evolution of reaction‐induced pore space in the
Hamed Amiri +7 more
wiley +1 more source
Shock and Vibration, 2019 An electro-hydraulic servo position and pressure compound control method was investigated considering the working principle of a hydraulic stepping motor of a shield machine gripper shoe and its practical working characteristics in the supporting process.
Nannan Liu +4 more
doaj +1 more source
Unstable Weak Imbibition in Fractured Porous Media: Microfluidic and Theoretical Insights
Water Resources Research, Volume 62, Issue 6, June 2026.Abstract Weak imbibition in permeable media is crucial for CO2 geological sequestration, oil and gas extraction, and groundwater contamination and remediation. Previous studies predicted that weak imbibition under favorable viscosity ratios produces stable displacement, but this assumption may fail in fractured porous media.
Zhengwen Zhu +4 more
wiley +1 more source
Non-Inertial Dynamic Analysis of 3-SPS/U Parallel Platform by Screw Theory and Kane’s Method
ActuatorsThis paper presents an improved method for the non-inertial dynamic analysis of the 3-SPS/U parallel platform (3-SPS/U PM), employing the screw theory and Kane’s method, where S, P, and U denote spherical, prismatic, and universal joints, respectively ...
Tianzhu Wang +7 more
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Handgrip and Acute Hemodynamic Responses During Cyclic Exercise: Randomized Clinical Trial
The Journal of Clinical Hypertension, Volume 28, Issue 6, June 2026.ABSTRACT During exercise, fine hemodynamic adjustments are essential to ensure adequate energy supply. Although cyclic treadmill exercise has been widely studied, isometric exercise with Handgrip (HG) has gained relevance in conditioning and rehabilitation contexts, yet data on the acute hemodynamic effects of combining these modalities remain scarce ...
Marvyn de Santana do Sacramento +7 more
wiley +1 more source
Direct Drive Volume Control Electro-Hydraulic Servo Ship Rudder
, 2010 Direct drive volume control（DDVC）electro-hydraulic servo system has synthesized the advantages of high power of hydraulic system and flexible control of the motor.
Wen Hai Su, Ji Hai Jiang
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Comparison of electro-hydraulic and electro-mechanic landing gear actuation for light VTOL aircraft
, 2021 In this paper, a landing gear actuation system for a light VTOL aircraft is predesigned aiming for minimal power consumption and low weight.
Thielecke, Frank, Springmann, Raphael
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Droplet deformation and pumping in AC electro-osmotic micropumps
, 2009 This paper was presented at the 2nd Micro and Nano Flows Conference (MNF2009), which was held at Brunel University, West London, UK. The conference was organised by Brunel University and supported by the Institution of Mechanical Engineers, IPEM, the ...
2nd Micro and Nano Flows Conference (MNF2009) +4 more
core
The Dynamic Characteristics of an Electro-Hydraulic Servovalve
, 1976 The frequency responses of an experimental electro-hydraulic position control system and a simulation of the system are compared. Three different valve models are used in the simulation in an attempt to highlight the important parameters of an electro ...
C. R. Burrows, D. J. Martin
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IEEE AccessThis paper presents a reinforcement learning-based discrete-time control strategy for nonlinear electro-hydraulic actuator systems equipped with a proportional directional control valve.
Raja Rout, Ashok Kumar Kumawat
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