Results 11 to 20 of about 710 (211)

Design Improvisation for Reduced Harmonic Distortion in a Flux Pump-Integrated HTS Generator

open access: yesEnergies, 2017
This paper presents a design improvisation of a flux pump-integrated 10 kW high-temperature superconducting (HTS) proof of concept generator for reduced harmonic distortion.
Ravichandra Kulkarni   +5 more
doaj   +1 more source

Driving mechanism of thermal transpiration pump with porous material

open access: yesAIP Advances, 2020
The behavior of the rarefied gas in the thermal transpiration pump with the porous material is investigated numerically by the direct simulation Monte Carlo method.
Shogo Sugimoto, Hiroshi Sugimoto
doaj   +1 more source

Towards quantifying the response of the oceans’ biological pump to climate change

open access: yesFrontiers in Marine Science, 2015
The biological pump makes a major global contribution to the sequestration of carbon-rich particles in the oceans’ interior. This pump has many component parts from physics to ecology that together control its efficiency in exporting particles.
Philip Wallace Boyd, Philip Wallace Boyd
doaj   +1 more source

The Ocean's Biological Pump: In Situ Oxygen Measurements in the Subtropical Oceans

open access: yesGeophysical Research Letters, 2022
The magnitude and distribution of the ocean's biological pump (the downward flux of organic carbon (OC) from the ocean surface) influences the pCO2 of the atmosphere and the O2 content of the deep sea, but has not been well quantified.
Steven Emerson, Bo Yang
doaj   +1 more source

A computational study of the effect of external heat flux and electric field on the nano-pumping of C20 molecules in carbon nanotubes by molecular dynamics simulation

open access: yesJournal of Materials Research and Technology, 2023
Nano-pump is a breakthrough that allows a tiny pump to transfer mass inside the atomic channels. These nanostructures can be used in various applications, such as drug delivery systems in clinical cases.
Yupeng Xie   +9 more
doaj   +1 more source

Superconducting flux pumps [PDF]

open access: yesJournal of Applied Physics, 2019
This paper presents a perspective on flux pumps. Flux pumps are a means of providing current to a coil or a magnet without direct electrical or physical contact. Typically, a coil would be charged directly using current leads, which would then be withdrawn if the magnets operated in the persistent mode (as with magnetic resonance imaging) or left in ...
openaire   +1 more source

Technical note: A simple and cost-efficient automated floating chamber for continuous measurements of carbon dioxide gas flux on lakes [PDF]

open access: yesBiogeosciences, 2018
Freshwaters emit significant amounts of CO2 on a global scale. However, emissions remain poorly constrained from the diverse range of aquatic systems.
K. T. Martinsen   +2 more
doaj   +1 more source

Experimental study on phase change heat transfer cooling plate for multiple heat sources cooling with high heat flux

open access: yesXi'an Gongcheng Daxue xuebao, 2023
In view of the heat dissipation of electronic components with high heat flux, five phase change heat transfer cold plates with different structures and processing methods were designed, the effects of cold plate structural parameters, heat flux ...
LIU Kai   +4 more
doaj   +1 more source

MOSFET-based HTS flux pump

open access: yesSuperconductor Science and Technology, 2023
Abstract We have developed a high-temperature superconducting (HTS) flux pump using high-power metal-oxide-semiconductor field-effect transistors (MOSFETs) for switching. For its primary coil, two commercial transformers are utilized, each consisting of two copper coils wound on a single iron core, which enables changing the load current
Róbert Jurčo   +4 more
openaire   +1 more source

A kilo-ampere level HTS flux pump [PDF]

open access: yesSuperconductor Science and Technology, 2019
This paper reports a newly developed high current transformer-rectifier High-Tc Superconducting (HTS) flux pump switched by dynamic resistance. A quasi-persistent current of over 1.1 kA has been achieved at 77 K using the device, which is the highest reported operating current by any HTS flux pumps to date.
Jianzhao Geng   +9 more
openaire   +2 more sources

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