Results 11 to 20 of about 1,491,312 (292)

Production system and method for producing fluids from a well [PDF]

open access: yes, 2002
A production system and method for producing fluids from a well are presented. The production system may include a submersible pump and a jet pump. The submersible pump may be arranged within the well.
Carvalho, Paulo M.   +2 more
core   +1 more source

A Bioinspired Stress‐Response Strategy for High‐Speed Soft Grippers

open access: yesAdvanced Science, 2021
The stress‐response strategy is one of the nature's greatest developments, enabling animals and plants to respond quickly to environmental stimuli. One example is the stress‐response strategy of the Venus flytrap, which enables such a delicate plant to ...
Yangqiao Lin   +10 more
doaj   +1 more source

A classification of scalar field potentials with cosmological scaling solutions [PDF]

open access: yes, 1998
An attractive method of obtaining an effective cosmological constant at the present epoch is through the potential energy of a scalar field. Considering models with a perfect fluid and a scalar field, we classify all potentials for which the scalar field
Liddle, Andrew R, Scherrer, Robert J
core   +2 more sources

Research and Development of Electro-hydraulic Control Valves Oriented to Industry 4.0: A Review

open access: yesChinese Journal of Mechanical Engineering, 2020
Electro-hydraulic control valves are key hydraulic components for industrial applications and aerospace, which controls electro-hydraulic motion. With the development of automation, digital technology, and communication technology, electro-hydraulic ...
Bing Xu   +4 more
doaj   +1 more source

A thermoelectric power generating heat exchanger: Part I - Experimental realization [PDF]

open access: yes, 2016
An experimental realization of a heat exchanger with commercial thermoelectric generators (TEGs) is presented. The power producing capabilities as a function of flow rate and temperature span are characterized for two different commercial heat transfer ...
Bjørk, R.   +4 more
core   +2 more sources

Investigation into the Independent Metering Control Performance of a Twin Spools Valve with Switching Technology-controlled Pilot Stage

open access: yesChinese Journal of Mechanical Engineering, 2021
In hydraulic area, independent metering control (IMC) technology is an effective approach to improve system efficiency and control flexibility. In addition, digital hydraulic technology (DHT) has been verified as a reasonable method to optimize system ...
Qi Zhong   +5 more
doaj   +1 more source

Simulative Study of Different Control Concepts of Cooling System for Machine Tools

open access: yesMATEC Web of Conferences, 2018
Power losses in machine tools, e.g. during the standby, idle-, and manufacturing process, are converted into heat energy. This causes the machine frame and other machine components to heat up. As a result, the Tool Centre Point (TCP) of the machine tools
Shabi Linart   +2 more
doaj   +1 more source

Thrifty swimming with shear-thinning [PDF]

open access: yes, 2018
Microscale propulsion is integral to numerous biomedical systems, for example biofilm formation and human reproduction, where the surrounding fluids comprise suspensions of polymers.
Gagnon, David A.   +1 more
core   +2 more sources

Influence of Controller’s Parameters on Static Bifurcation of Magnetic-Liquid Double Suspension Bearing

open access: yesEnergies, 2021
Magnetic-Liquid Double Suspension Bearing (MLDSB) is composed of an electromagnetic supporting and a hydrostatic supporting system. Due to greater supporting capacity and static stiffness, it is appropriate for occasions of middle speed, overloading, and
Jianhua Zhao   +6 more
doaj   +1 more source

Experimental investigation of direct contact baseplate cooling for electric vehicle power electronics [PDF]

open access: yes, 2019
An experimental setup has been built to investigate the thermo-hydraulic performance of the direct contact baseplate cooling technique for power electronics in electric vehicles, to improve the design and to validate the modelling of this technique.
De Paepe, Michel   +4 more
core   +1 more source

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