Results 41 to 50 of about 7,995,389 (202)

Toward a Simplified Arc Impingement Model in a Direct-Current Electric Arc Furnace

open access: yesMetals, 2021
A 2D axisymmetric two-phase model was developed to study the effect of an arc impingement on the liquid metal inside an electric arc furnace. In addition to the arc flow dynamics, the model covered the heat transfer and magneto hydrodynamics of the arc ...
Mohamad Al-Nasser   +9 more
doaj   +1 more source

Bus voltage compensation circuit for controlling direct current motor [PDF]

open access: yes, 1969
Automatic control of voltage supply to direct current ...
Barniskis, W. A., Fink, J. W.
core   +1 more source

Do current WIMP direct measurements constrain light relic neutralinos? [PDF]

open access: yes, 2005
New upper bounds on direct detection rates have recently been presented by a number of experimental collaborations working on searches for WIMPs. In this paper we analyze how the constraints on relic neutralinos which can be derived from these results is
A. Bottino   +10 more
core   +2 more sources

Occurrence Condition of Electric Current Density in Electrical Pitting

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2010
Recently, several problems owing to electrical pitting have been observed to be extremely common in small bearings. Many researchers reported on the electrical pitting of bearings used for railcars.
Shoji NOGUCHI   +2 more
doaj   +1 more source

Brushless Direct Current Electric Motor Design with Minimum Cogging Torque [PDF]

open access: yes, 2014
Cogging torque is one of the factors that influence electric motor efficiency. Many methods have been used to reduce the cogging torque. One of the methods is the determination of the number of slots and poles fraction.
Inayati, I. (Inayati)   +2 more
core  

Students' Understanding of Direct Current Resistive Electrical Circuits

open access: yes, 2003
Research has shown that both high school and university students' reasoning patterns regarding direct current resistive electric circuits often differ from the currently accepted explanations.
Beichner, Robert J.   +1 more
core   +1 more source

Rolling current collector in direct current machines [PDF]

open access: yes, 2002
The new method of rolling current collector has been developed. Its theoretical research was carried out.
Dilthey, Ulrich   +3 more
core   +1 more source

Standard arc welders provide high amperage direct current source [PDF]

open access: yes, 1966
Standard arc welders or power supplies are hooked up in parallel or series connections to obtain an adequate supply of current or voltage for various purposes.
Beasley, W. D., Brooks, J. D.
core   +1 more source

Tribovoltaic Effect: Origin, Interface, Characteristic, Mechanism & Application

open access: yesAdvanced Science
Tribovoltaic effect is a phenomenon of the generation of direct voltage and current by the mechanical friction on semiconductor interface, which exhibits a brand‐new energy conversion mechanism by the coupling of semiconductor and triboelectrification ...
Zhi Zhang   +5 more
doaj   +1 more source

Electrical Stimulation of Acute Fractures: A Narrative Review of Stimulation Protocols and Device Specifications

open access: yesFrontiers in Bioengineering and Biotechnology, 2022
Orthopedic fractures have a significant impact on patients in the form of economic loss and functional impairment. Beyond the standard methods of reduction and fixation, one adjunct that has been explored since the late 1970s is electrical stimulation ...
Peter J. Nicksic   +11 more
doaj   +1 more source

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