Results 11 to 20 of about 1,156,215 (298)

New evidence of the hopping nature of the excess tunnel current in heavily doped silicon p-n diodes at cryogenic temperatures

open access: yesSemiconductor Physics, Quantum Electronics & Optoelectronics, 2017
The new experimental data concerning the effect of magnetic field on electric properties of silicon diodes with high doping levels both in the emitter and base (conduction of which at low temperatures is determined by the excess tunnel current) has been ...
V. L. Borblik   +3 more
doaj   +1 more source

Jet Collimation by Small-Scale Magnetic Fields [PDF]

open access: yes, 2001
A popular model for jet collimation is associated with the presence of a large-scale and predominantly toroidal magnetic field originating from the central engine (a star, a black hole, or an accretion disk). Besides the problem of how such a large-scale
Benford G.   +17 more
core   +3 more sources

Zero Magnetic Field Type Magnetic Field Sensor

open access: yesIEEJ Transactions on Electronics, Information and Systems, 1990
AbstractThis paper presents a new magnetic field sensor named the zero magnetic field type, on the basis of its principle of operation, which is as follows: when the magnetic field level in the core used as a sensor is shifted by an unknown field to be detected, a controlled field is so superimposed in the opposite direction to the unknown field that ...
T. Sonoda, R. Ueda
openaire   +2 more sources

Magnetic Field Transfer From A Hidden Sector [PDF]

open access: yes, 2018
Primordial magnetic fields in the dark sector can be transferred to magnetic fields in the visible sector due to a gauge kinetic mixing term. We show that the transfer occurs when the evolution of magnetic fields is dominated by dissipation due to finite
Kamada, Kohei   +2 more
core   +2 more sources

External Field-Controlled Ablation: Magnetic Fields [PDF]

open access: yesNanomaterials, 2019
Laser ablation of silicon under an external applied magnetic field with different orientations was investigated in respect to the scanning direction and polarisation of the laser beam, by observation of the ablation patterns and debris deposition. Ultra-short ∼230 fs laser pulses of 1030 nm wavelengths were used in the single and multi-pulse ...
Jovan Maksimovic   +4 more
openaire   +5 more sources

The STELLA Robotic Observatory on Tenerife

open access: yesAdvances in Astronomy, 2010
The Astrophysical Institute Potsdam (AIP) and the Instituto de Astrofísica de Canarias (IAC) inaugurated the robotic telescopes STELLA-I and STELLA-II (STELLar Activity) on Tenerife on May 18, 2006.
Klaus G. Strassmeier   +11 more
doaj   +1 more source

Tunable magnetic field source for magnetic field imaging microscopy

open access: yesUltramicroscopy, 2022
11 pages, 9 ...
Andris Berzins   +5 more
openaire   +3 more sources

Computer Adaptive Testing Using Upper-Confidence Bound Algorithm for Formative Assessment

open access: yesApplied Sciences, 2019
There is strong support for formative assessment inclusion in learning processes, with the main emphasis on corrective feedback for students. However, traditional testing and Computer Adaptive Testing can be problematic to implement in the classroom ...
Jaroslav Melesko, Vitalij Novickij
doaj   +1 more source

A mathematical model and experimental procedure to analyze the cognitive effects of audio frequency magnetic fields

open access: yesFrontiers in Human Neuroscience, 2023
Audio frequency magnetic fields (20 Hz−20 kHz) are magnetic fields in extremely low frequency-very low frequency (ELF-VLF) bands that are present near audio equipment and acoustic transducers.
Enrique A. Navarro   +1 more
doaj   +1 more source

Solar magnetic fields [PDF]

open access: yesJournal of Astrophysics and Astronomy, 1994
ISSN:0973 ...
openaire   +2 more sources

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