Results 251 to 260 of about 169,803 (308)

Adaptive Strategies of Desert Shrub Stem-Leaf Anatomical Traits in the High-Altitude Qaidam Basin. [PDF]

Plants (Basel)
Wang Y, Liu S, Ji C.
europepmc   +1 more source

The Multifunctional Roles of Aquaporins in Tumors: Focusing on Metabolism, Migration, and Regulation of the Tumor Microenvironment. [PDF]

Int J Mol Sci
Qu K, Wang R, Bi Y, Liu Y, Yi B, Wang J.
europepmc   +1 more source

An experimental evaluation of vibration patterns arising from vortex flow in mixed flow pumps a case study in Upper Egypt. [PDF]

Sci Rep
El-Gazzar DMS, Abo-Elnil AHI, Elsayed MEA.   +2 more
europepmc   +1 more source

Influence of Low-Temperature Fluid Thermal Shock on Hydraulic Fracture Propagation in Deep Shale. [PDF]

ACS Omega
Guo W, Guo Y, Wu M, Bi Z, Zhang X, Teng S, Yang C.   +6 more
europepmc   +1 more source

The Influence of Operating Pressure Oscillations on the Machined Surface Topography in Abrasive Water Jet Machining. [PDF]

Materials (Basel)
Veljković DŽ, Baralić J, Janković P, Dučić N, Savković B, Jovičić A.   +5 more
europepmc   +1 more source

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Hydraulics and hydraulic pneumatic drive. Hydraulics.

2023
The textbook outlines the basic laws of equilibrium and fluid motion in closed channels. The methods of using these laws in engineering calculations are considered, as well as recommendations for the design of individual elements of hydraulic systems are given.
Aleksandr Lepeshkin, Aleksandr Mihaylin, Anatoliy Sheypak, D. Shterenliht, Yu. Belenkov   +4 more
openaire   +1 more source

On the Dynamic Behavior of Servo-Hydraulic Drives

Nonlinear Dynamics, 1998
A servo-hydraulic drive for position control with a flapper-nozzle type servo-valve is described by a 10th-order, non-linear system of ODEs. This system is partially singularly perturbed. The perturbation stems from the compressibility of the hydraulic fluid and the fast dynamics of some sub-systems of the valve.
Scheidl, R., Manhartsgruber, B.
openaire   +2 more sources

Adaptive Hydraulic Drive of Manipulator

Applied Mechanics and Materials, 2016
At present in manipulators the hydraulic drives with one degree of freedom are used. Such drive provides single-valued function of constraint between input and output links motion. However for overcoming of variable force of resistance it is necessary to use the variable transfer ratio between input and output links. The adjustable drive should contain
Konstantin Samson Ivanov, Baurjan Tultayev   +1 more
openaire   +1 more source