Results 21 to 30 of about 547,522 (314)

Simulation Study on Hydraulic System of Shallow Mud Line Christmas Tree

open access: yesShiyou jixie, 2022
In order to explore the hydraulic system performance of ST4×2-5M shallow mud line Christmas tree, the parameters, functions and principles of the 3 key parts affecting the performance of the hydraulic system were studied, and the models of gate ...
Li Huan   +4 more
doaj  

Research on the attenuation characteristics of a Helmholtz type hydraulic silencer (Influence of a volume and neck geometry on the attenuation characteristics)

open access: yesNihon Kikai Gakkai ronbunshu, 2014
The noise and vibration caused by pressure pulsation are one of detrimental problems in hydraulic systems. A Helmholtz type hydraulic silencer, which is based on the resonant phenomena of a mass-spring-damper system for its attenuate principle, is known ...
Tetsuya KURIBAYASHI   +2 more
doaj   +1 more source

Time‐ and frequency‐domain analyses of the hydraulic system using a discrete numerical scheme based on equivalent circuit modelling

open access: yesEnergy Science & Engineering, 2022
Mathematical modeling is widely used for the time‐and frequency‐domain analysis of hydraulic systems. To explore the complicated hydraulic transients of the piping system under various operating conditions, different formulations of the equivalent ...
Shuangqing Yan, Yang Zheng
doaj   +1 more source

Civil aircraft hydraulic system temperature monitoring based on atom search Kriging model method

open access: yesHangkong gongcheng jinzhan, 2023
Temperature is one of the important characteristic parameters of civil aircraft hydraulic system performance. To effectively realize the temperature monitoring of hydraulic system, the method of Kriging model based on atomic search (ASOKM) is proposed ...
FENG Yunwen   +3 more
doaj   +1 more source

Using similarity numbers for the diagnostics of aircraft hydrogenerator

open access: yesAviation, 2014
In aviation, great emphasis is placed on aircraft safety. The current technical condition of the aircraft and its systems is an important parameter for its airworthiness.
Karol Bencalik, Karel Tretina
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

Feasibility and Tolerability of Performing Portable MRI for Neurological Disorders in an Outpatient Neurology Clinic: A Prospective Cohort

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Accessing brain magnetic resonance imaging (MRI) can be challenging, especially for underserved patients, which may lead to disparities in neurological diagnosis. Method This mixed‐methods study enrolled adults with one of four neurological disorders: mild cognitive impairment or dementia of the Alzheimer type, multiple sclerosis ...
Maya L. Mastick   +19 more
wiley   +1 more source

The Influence of Historical Irrigation Canals on Urban Morphology in Valencia, Spain

open access: yesLand, 2021
As one of the fundamental natural resources of life, water and its management within ecosystems has always been the most crucial aspect of any settlement.
Fumiko Ikemoto   +2 more
doaj   +1 more source

Quick-response servo amplifies small hydraulic pressure differences [PDF]

open access: yes, 1966
Hydraulic servo, which quickly diverts fluid to either of two actuators, controls the flow rates and pressures within a hydraulic system so that the output force of the servo system is independent of the velocity of the mechanism which the system ...
Wiegard, D. E.
core   +1 more source

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

open access: yesAdvanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham   +7 more
wiley   +1 more source

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