Results 91 to 100 of about 541,532 (311)

Selection and experimental evaluation of low-cost porous materials for regenerator applications in thermoacoustic engines [PDF]

open access: yes, 2010
This paper aims at evaluating three selected low-cost porous materials from the point of view of their suitability as regenerator materials in the design of thermoacoustic travelling wave engines.
Abduljalil, Abdulrahman S.   +2 more
core   +1 more source

Process System Hydraulics [PDF]

open access: yes, 2002
An analysis of hydraulic characteristics of the reactor plenum and the geometry of the permanent tube slots indicates the effect of the plenum pressure gradient on flow is substantially less than has been used previously to determine process water flows from cumulative fuel assembly resistances. This report details results of that study.
openaire   +2 more sources

Smart Catheters for Diagnosis, Monitoring, and Therapy

open access: yesAdvanced Healthcare Materials, EarlyView.
This study presents a comprehensive review of smart catheters, an emerging class of medical devices that integrate embedded sensors, robotics, and communication systems, offering increased functionality and complexity to enable real‐time health monitoring, diagnostics, and treatment. Abstract This review explores smart catheters as an emerging class of
Azra Yaprak Tarman   +12 more
wiley   +1 more source

Integrated water resources management and adaptation to climate change

open access: yesRevue Marocaine des Sciences Agronomiques et Vétérinaires, 2019
In Morocco, the management of water resources, characterized by scarcity and irregularity, has to cope with the increasing pressure of demands as well as climate change.
Hasna MOUMNI, Karima SEBARI, Ali HAMMANI
doaj  

Research on flow compensation technology for hydraulic system in working face

open access: yesGong-kuang zidonghua
Currently, there is a lack of analysis on the pressure and flow characteristics of hydraulic systems during continuous propulsion in the optimization research of working face hydraulic systems.
ZHAO Shuji
doaj   +1 more source

Hydraulic drive system prevents backlash [PDF]

open access: yes, 1965
Hydraulic drive system uses a second drive motor operating at reduced torque. This exerts a relative braking action which eliminates the normal gear train backlash that is intolerable when driving certain heavy ...
Acord, J. D.
core   +1 more source

Shapeshifting Liquid Metal Droplets for Soft Fluidic Machines

open access: yesAdvanced Materials, EarlyView.
This study presented a liquid metal shape shifting strategy which harnesses Lorentz force, surface tension and fluid instabilities to achieve autonomous fluidic power. By using a liquid metal droplet as a mobile current carrier, this strategy enables the development of low‐voltage, self‐oscillating pumps that outperform existing soft pumps.
Saba Firouznia   +5 more
wiley   +1 more source

Design and simulations of a balancing device with a hydraulic circuit for a fully hydraulic top drive drilling system for a drilling rig capable of 10 000-m-deep drilling

open access: yesMeitian dizhi yu kantan
ObjectiveThe balancing device for a fully hydraulic top drive drilling system (TDDS), an important part of a drilling rig capable of 10000-m-deep drilling, is designed to dynamically and accurately regulate the axial load in the screwing and unscrewing ...
Chaochun LUO   +5 more
doaj   +1 more source

Dynamic modeling of the servovalves incorporated in the servo hydraulic system of the 70-meter DSN antennas [PDF]

open access: yes
As the pointing accuracy and service life requirements of the DSN 70 meter antenna increase, it is necessary to gain a more complete understanding of the servo hydraulic system in order to improve system designs to meet the new requirements.
Bartos, R. D.
core   +1 more source

Nonelastomeric Rod Seals for Advanced Hydraulic Systems [PDF]

open access: yes
Advanced high temperature hydraulic system rod sealing requirements can be met by using seals made of nonelastomeric (plastic) materials in applications where elastomers do not have adequate life.
Hady, W. F., Waterman, A. W.
core   +2 more sources

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