Results 141 to 150 of about 191,488 (182)
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An Analysis of Ocular Counter-rolling Measured with Search Coils
Acta Oto-Laryngologica, 1989Ocular counter-rolling (OCR) was studied by using a scleral search coil magnetic system in normal subjects and in pathological cases. Normal ocular counter-rolling was 2.7 degrees-7 degrees when the head was tilted 10 to 30 degrees. In most cases of benign paroxysmal positional vertigo, the OCR to the ipsilateral side was reduced, while that to the ...
S, Takemori, M, Tanaka, H, Moriyama
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Construction of Differential Type Search Coil Magnetometer
Journal of the Korean Magnetics Society, 2010 Search coil magnetometer has been used for detection of ac magnetic field with high sensitivity. To reduce demagnetizing factor of core and increase S/N ratio of search coil magnetometer, the core was divided by two parts and coil was wound on each cores. Two coils were connected serially and put into amplifier as differential mode.
J.H. Kim, De-Rac Son
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On the measurement of the effective area of a search coil
Proceedings of the Physical Society, 1945A condenser null-method for the determination of the effective area of search coil is described. The underlying principle is to compare the area of the unknow coil with a calculable area, the two coils being used alternately in a powerful, constant magnetic field, of which the region of uniform intensity has been extended by the use of pole-pieces with
H Mikhail, Y L Yousef
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Search of Short Circuits in the Superconducting Coils of the ATLAS Detector
IEEE Transactions on Appiled Superconductivity, 2005The detection of a short circuit inside the superconducting coils of the ATLAS detector after their installation in the casing is mandatory for the mechanical and electrical safety during a fast discharge of the magnet. The detection of a short circuit by means of a capacitor discharge becomes very difficult once the coils are integrated inside the ...
E. Acerbi +4 more
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OGO Search Coil Magnetometer Experiments
IEEE Transactions on Geoscience Electronics, 1969The OGO triaxial search coil magnetometer measures naturally occurring magnetic fluctuations between 0.01 Hz and ~1000 Hz in the space around the earth. The instrument design is described and the design rationale discussed. The results of the observations on the first five OGO spacecraft in the magnetosphere, magnetotail, magnetosheath, and ...
Allan M. A. Frandsen +2 more
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Simulation Analysis of Micro Coils for the Fabrication of Micro-scaled Search Coil Magnetometer
2016 International Conference on Computer and Communication Engineering (ICCCE), 2016Magnetic field detection has been widely accepted in many applications such as military systems, outer space exploration and even in medical diagnosis and treatment. Low magnetic field detection is particularly important in tracking of magnetic markers in digestive tracks or blood vessels.
Tengku Muhammad Afif Bin Tengku Azmi +1 more
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Noise calculation and analysis of a search coil magnetometer
2010 International Conference on Computer Application and System Modeling (ICCASM 2010), 2010For expertise on detecting very weak signal, search coil magnetometer is widely used in Magnetotellurics (MT). Unfortunately, noise is a primary factor affecting the sensitivity. In this work, noise model of the magnetometer is presented based on measured parameters, where transfer function affected by core eddy current loss is considered.
null Zhao Yifei +4 more
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A soft contact lens search coil for measuring eye movements
Vision Research, 1985A five turn coil of magnet wire sandwiched between two soft contact lenses served as a magnetic search coil to measure horizontal and vertical eye movements in humans. The lens was adhered to the eye for 35 min by periodically misting the eye with distilled water; during this time the records of eye position showed that the lens remained firmly ...
Robert V Kenyon
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Monte-Carlo Search for Snakes and Coils
2012The “Snake-In-The-Box” problem is a hard combinatorial search problem, first described more than 50 years ago, which consists in finding longest induced paths in hypercube graphs. Solutions to the problem have diverse and some quite surprising practical applications, but optimal solutions are known only for problems of small dimension, as the search ...
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The Use of Search Coils for Magnetic Measurements
International Journal of Electrical Engineering & Education, 1982The basic principle of search coils is explained by reference to the integral form of Maxwell's equation. The salient features of instrumentation, necessary for search coil applications, are discussed, followed by a brief description of a few typical examples of magnetic measurements by a variety of search coils.
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