Results 21 to 30 of about 1,708,324 (306)

Sealing Structure Optimization Of LNG Ultra-Low Temperature And High-Pressure Axial Flow Check Valve

open access: yesJournal of Applied Science and Engineering, 2022
To research the influence of high-speed collision between the valve core and valve seat on sealing performance in the closing process of check valve, the collision between the valve core and valve seat during the check valve closing process was ...
Shuxun Li   +4 more
doaj   +1 more source

Cross-Coupled Charge Pump Synthesis Based on Full Transistor-Level [PDF]

open access: yes, 2019
This paper presents utility for the design of the cross-coupled charge pump, which is used for supplying peripherals with low current consumption on the chip, as the EEPROM or FLASH memories.
Hospodka, Jiří   +2 more
core   +2 more sources

Study on the Cavitation Performances and Unsteady Characteristics of a Centrifugal Fire Pump [PDF]

open access: yesJournal of Applied Fluid Mechanics
Centrifugal fire pumps are critical for firefighting systems but suffer from cavitation and instability under off-design conditions. However, systematic analyses of their flow-rate-dependent dynamics remain limited. This study systematically investigates
J. Hao   +6 more
doaj   +1 more source

A numerical investigation on the vortex formation and flow separation of the oscillatory flow in jet pumps [PDF]

open access: yes, 2015
A two-dimensional computational fluid dynamics model is used to predict the oscillatory flow through a tapered cylindrical tube section (jet pump) placed in a larger outer tube.
ANSYS   +8 more
core   +3 more sources

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

Theory of cw Raman oscillation in optical fibers [PDF]

open access: yes, 1979
A theory for Raman fiber laser oscillators is presented. The Stokes output and the residual pump power are shown to be calculable from a knowledge of the input pump power and the fiber characteristics. The evolution of the pump and the Stokes waves along
AuYeung, John, Yariv, Amnon
core   +1 more source

Efficacy and Renal Safety of Dapagliflozin in Patients with Type 2 Diabetes Mellitus Also Receiving Metformin: A Real-Life Experience

open access: yesJournal of Diabetes Research, 2018
Introduction. This study aimed at evaluating the efficacy and safety of dapagliflozin in patients with type 2 diabetes (T2D) who also received metformin in clinical practice in Italy. Methods.
Alessandro Scorsone   +8 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

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