Results 21 to 30 of about 710 (211)

Temporal and regional variabilities in the attenuation of sinking particulate organic carbon in the Kuroshio region

open access: yesFrontiers in Marine Science, 2022
The biological pump that transports carbon from the surface ocean to the ocean interior is an important determinant of ocean carbon absorption from the atmosphere, and of biological activity beneath the euphotic zone.
Hideki Fukuda   +5 more
doaj   +1 more source

Numerical analysis of the electromagnetic force for design optimization of a rectangular direct current electromagnetic pump

open access: yesNuclear Engineering and Technology, 2018
The force of a direct current (DC) electromagnetic pump used to transport liquid lithium was analyzed to optimize its geometrical and electrical parameters by numerical simulation.
Geun Hyeong Lee, Hee Reyoung Kim
doaj   +1 more source

Investigation of nonlinear effects in Josephson parametric oscillators used in circuit quantum electrodynamics

open access: yesNew Journal of Physics, 2013
We experimentally study the behavior of a parametrically pumped nonlinear oscillator, which is based on a superconducting λ /4 resonator, and is terminated by a flux-tunable superconducting quantum interference device.
Philip Krantz   +8 more
doaj   +1 more source

A Nanometer Water Pump Induced by the Brownian and Non-Brownian Motion of a Graphene Sheet on a Membrane Surface

open access: yesNanoscale Research Letters, 2018
Energy-saving water pump and efficient semipermeable membranes are the cores of reverse osmosis technology. Applying nanotechnology to improve the performance is a fashion in recent years.
Chang Fang, Fujing Lv, Jiaye Su
doaj   +1 more source

Upper ocean mixing controls the seasonality of planktonic foraminifer fluxes and associated strength of the carbonate pump in the oligotrophic North Atlantic [PDF]

open access: yesBiogeosciences, 2015
Oligotrophic regions represent up to 75% of Earth's open-ocean environments. They are thus areas of major importance in understanding the plankton community dynamics and biogeochemical fluxes.
K. H. Salmon   +3 more
doaj   +1 more source

An Alternative Method for Calculating the Eddy Current Loss in the Sleeve of a Sealless Pump

open access: yesActuators, 2021
A sealless pump, also known as a wet rotor pump or a canned pump, requires a stationary sleeve in the air gap to protect the stator from a medium that flows around the rotor and the pump impeller.
Tomislav Strinić   +5 more
doaj   +1 more source

Starting Fault Experiment of a Certain Turbo Shaft Engine

open access: yesMATEC Web of Conferences, 2017
In order to diagnose the starting fail fault of the certain turbo shaft engine which often occurs in daily use, the experiments for the micro pump and the fuel filter were carried out by the method of contrast test.
Xiaodong Xie   +3 more
doaj   +1 more source

3-D Finite Element Model for Drum-Type HTS Dynamos

open access: yesIEEE Access
Continuous cylindrical stator high-temperature superconducting (HTS) dynamos, also known as drum-type HTS dynamos, are devices for contactless current injection, but their complex three-dimensional (3D) electromagnetic behaviour cannot be captured ...
Mujtaba Hussain   +8 more
doaj   +1 more source

A New Method of Selecting the Airlift Pump Optimum Efficiency at Low Submergence Ratios with the Use of Image Analysis

open access: yesEnergies, 2019
This paper presents experimental studies on the optimization of two-phase fluid flow in an airlift pump. Airlift pumps, also known as mammoth pumps, are devices applied for vertical transport of liquids with the use of gas.
Grzegorz Ligus   +3 more
doaj   +1 more source

Study on the influence of dynamic/static interface processing methods on CFD simulation results of the axial-flow blood pump

open access: yesAdvances in Mechanical Engineering, 2020
Computational fluid dynamics is an essential tool for the flow field analysis of the blood pump. The interface processing method between the dynamic/static regions will affect the accuracy of simulation results, but its influence on the simulation ...
Shuai Wang, Jianping Tan, Zheqin Yu
doaj   +1 more source

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