Results 81 to 90 of about 3,191,259 (277)

Research on Safety Control Technology for Dual-string Annulus in Integral Injection-production Well of Offshore Oilfield

open access: yesShiyou jixie, 2016
Existing injection-production technology in the same well has no dual-string annulus safety control technology and matching tools for offshore oilfield application.
Zhao Zhonghao   +4 more
doaj  

The fluid flow through the related element system of technical device such as pipe–hydraulic resistance–pipe

open access: yes, 2016
In this paper the stationary flow through the pipe–hydraulic resistance–pipe element system have been investigated to determine how the liquid flow rate depends on the differential pressure applied to the system and the system geometry. The Navier–Stokes
E.Sh. Nasibullaeva, I.Sh. Nasibullayev
core   +1 more source

Distributed Micropneumatic Sensors for Soft Robots to Detect Touch and Pose

open access: yesAdvanced Robotics Research, EarlyView.
Soft robots need integrated touch and pose sensing for safe and reliable operation. This work presents a three‐fingered soft gripper with 18 micropneumatic sensors made from the same materials as its pneumatic actuators. By measuring airflow resistance changes in deforming microchannels of the sensors, finger pose and contact are detected, enabling ...
Vilma Lampinen   +3 more
wiley   +1 more source

Strength Enhancement and Redundant Design of the Electromagnetic Repulsion Valve for High-Speed Switch Hydraulic Mechanisms

open access: yesEnergies
As a control structure, the magnetic repulsion device is applied in the high-speed switch hydraulic operating mechanism. It must not only move quickly but also stop precisely.
Youpeng Zhang   +3 more
doaj   +1 more source

PRESENT-DAY METHODS OF POWER SUPPLY AND CONTROL OF PARALLEL OPERATING HYDRAULIC MOTORS AND DEVICES OF MINING, CONSTRUCTION AND ROAD MACHINES

open access: yesInterexpo GEO-Siberia, 2020
Methods of power supply and control of parallel operating hydraulic motors and devices having prospects of application in mining, construction and road machines are considered. Diagrams of present-day hydraulic systems of machines with LS/PC (LoadSensing/PressureCompensation) and PPPC (ProportionalPriorityPressureCompensation) control are presented ...
openaire   +1 more source

THERMOPHYSICAL MONITORING OF MOISTURE IN HYDRAULIC LIQUIDS [PDF]

open access: yes, 2018
The technique of fast thermal control has been applied for the examination of samples of hydraulic liquids with a water content from 0,1 to 3,5 %. Appropriate operating modes of the measuring device were found.Работа выполнена в рамках проекта РФФИ № 16 ...
Поволоцкий, И. И.   +5 more
core  

Hydraulic fitness device design

open access: yes, 2021
V zaključni nalogi je bil glavni cilj, zamenjati jeklene uteži na klasični fitnes napravi s hidravličnim sistemom tako, da bi funkcionalnost naprave ostala čim bolj nespremenjena.
Marinšek, Žiga
core  

Synchronization‐Dissipation in the Cardiorespiratory System

open access: yesAdvanced Science, EarlyView.
By modeling central nervous coupling and viscoelastic interactions in the cardiorespiratory system we show that synchronization produces a 10% gain in cardiac efficiency in humans. It is surmised that respiratory sinus arrhythmia improves cardiac pumping efficiency by reducing dynamic stress and power dissipation in the pulmonary vasculature.
Joshua R. Border   +3 more
wiley   +1 more source

Designing a New Artificial Lift Method Using Computational Simulation and Evolutionary Optimization

open access: yesIEEE Access, 2019
Oil exploitation has moved into deeper reservoirs with the advances in drilling techniques and thus the development of new pumping techniques has become a challenge to improve production. The positive displacement pumping system proposed in this paper is
Andre Pimentel Moreira   +3 more
doaj   +1 more source

A Portable Hand-Operated Reverse Osmosis Desalination Device with Integrated Hydraulic Brine Energy Recovery

open access: yesWater
Securing a freshwater supply for personnel engaged in remote maritime operations remains a persistent logistical challenge. This paper presents the design, hydraulic simulation, and experimental validation of a compact, manually operated seawater desalination device based on reverse osmosis (RO) coupled with an integrated hydraulic energy recovery ...
Su, Zhenxiang   +2 more
openaire   +1 more source

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