Results 21 to 30 of about 552,399 (219)

Research on Fault Diagnosis Method of Electro-Hydrostatic Actuator

open access: yesShock and Vibration, 2021
Electrohydrostatic actuator is a type of actuator that uses hydraulic energy as the energy transmission carrier, which has the advantages of small size and high power. Since it is commonly used in harsh conditions such as strong vibration, high pressure,
Lei Zhufeng   +4 more
doaj   +1 more source

Study On Acoustic Characteristics Of Internal Leakage Of Micro-start Spring Safety Valve

open access: yesJournal of Applied Science and Engineering, 2023
To investigate the noise radiation in the leakage of the safety valve. The acoustic fluid-solid coupling simulation analysis of the leakage process of the safety valve is used to study the flow field when the safety valve is leaking.
Shuxun Li   +4 more
doaj   +1 more source

Evaluation of several passive flow control methods applied to reversed pitching airfoils of bi-directional turbines [PDF]

open access: yesAIP Advances
Reversed pitching hydrofoils/airfoils are often used in many engineering applications, such as bi-directional tidal turbines, helicopters, and vertical-axis propulsions, but how to mitigate the adverse consequences caused by them was seldom investigated ...
Lei Shi, Zhaoyu Lv, Naijiang Xu
doaj   +1 more source

Analysis of submerged bearing eccentricity on support characteristics of molten salt pump for thorium nuclear power system

open access: yesHe jishu, 2022
BackgroundWith the development of thorium molten salt reactor nuclear energy system (TMSR) from experimental reactor to research, demonstration and commercial reactor, its shafting evolved into the slender flexible rotor supported by submerged bearing ...
MA Baiqing   +6 more
doaj   +1 more source

Australia’s Combustible Cladding Crisis—A Failure in Delegated Legislation?

open access: yesBuildings, 2023
Australia’s combustible cladding crisis is estimated to cost approximately $6 billion to remediate. No study has been published which determined the causative factors for the magnitude of this issue.
Christian van der Pump   +1 more
doaj   +1 more source

Electrochemical Biosensor Based on ds-DNA/N-G@CS/GCE for Highly Sensitive and Rapid Measurement of Antioxidant Activity

open access: yesECS Advances, 2023
Antioxidants remove free radicals and inhibit the oxidation of oxygen-sensitive substances, which are of great significance in disease prevention and food preservative.
Bolu Sun   +9 more
doaj   +1 more source

Calculation of Parameters of Technological Equipment of Hydraulic Elevator Installation for Removing Sand Plugs from Wells

open access: yesНаука и техника, 2022
The paper considers the technological scheme of the hydraulic elevator installation, according to which water from a pressure tank is supplied by a working pump to the well through two parallel pipelines: a hydraulic monitor with a washing nozzle for ...
J. A. Medvedeva   +2 more
doaj   +1 more source

Correlation Analysis of the Hydrodynamic Characteristics and Stability of a Self-balancing Multistage Pump [PDF]

open access: yesJournal of Applied Fluid Mechanics
The BB5 series multistage centrifugal pump is commonly utilized for its capacity to deliver a large head. However, due to the long rotor system in the BB5 series multistage pump, the unsteady flow field structure of each impeller at every stage ...
W. S. Ma   +4 more
doaj   +1 more source

DEVELOPMENT OF A SYSTEM FOR ANALYSIS AND UNLOADING OF ROAD TRAFFIC USING INFORMATION SYSTEMS

open access: yesInternational Journal of Advanced Studies, 2021
Greenhouse technology has improved significantly in recent years and the cost of associated electronic components has been steadily declining. The growing popularity of open-source software platforms and microcontrollers such as the Arduino are making ...
Linar M. Akhmetov   +3 more
doaj   +1 more source

Operation optimization study of water pump production model based on low-carbon economy concept

open access: yesFrontiers in Energy Research, 2023
The inventory and delivery rate of water pump are affected largely by the production mode. In order to improve the operation optimization of water pump production model, the simulation test method and system dynamics model were selected in the manuscript.
Jing Xu, Yixuan Lu, Yixuan Lu
doaj   +1 more source

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